Journal articles: 'Available water holding capacity'

1

Horne, D. J., and D. R. Scotter. "The available water holding capacity of soils under pasture." Agricultural Water Management 177 (November 2016): 165–71. http://dx.doi.org/10.1016/j.agwat.2016.07.012.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

JONG, R. DE, and J. A. SHIELDS. "AVAILABLE WATER-HOLDING CAPACITY MAPS OF ALBERTA, SASKATCHEWAN AND MANITOBA." Canadian Journal of Soil Science 68, no. 1 (February 1, 1988): 157–63. http://dx.doi.org/10.4141/cjss88-015.

Full text

Abstract:

Available water-holding capacity (AWC) maps of Alberta, Saskatchewan and Manitoba were derived from Soil Landscape maps (1:1 million scale) by substituting AWC classes for soil textural classes. The maps provide information required for the geographical interpretation of soil water and crop modelling analyses. Key words: Available water-holding capacity, maps, texture

APA, Harvard, Vancouver, ISO, and other styles

3

Bordoloi, Reetashree, Biswajit Das, Gyati Yam, Pankaj K. Pandey, and Om Prakash Tripathi. "Modeling of Water Holding Capacity Using Readily Available Soil Characteristics." Agricultural Research 8, no. 3 (September 11, 2018): 347–55. http://dx.doi.org/10.1007/s40003-018-0376-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Zhou, Xia Vivian, Christopher Boyer, James A. Larson, Brian Leib, and Owen Gwathmey. "Profit-Maximizing Irrigation for Cotton on High Available Water Holding Capacity Soils." Agronomy Journal 108, no. 4 (July 2016): 1571–80. http://dx.doi.org/10.2134/agronj2015.0602.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Pascual, M., J. M. Villar, X. Domingo, and J. Rufat. "WATER PRODUCTIVITY OF PEACH FOR PROCESSING IN A SOIL WITH LOW AVAILABLE WATER HOLDING CAPACITY." Acta Horticulturae, no. 889 (March 2011): 189–95. http://dx.doi.org/10.17660/actahortic.2011.889.21.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Silva, Bruno Montoani, Érika Andressa da Silva, Geraldo César de Oliveira, Mozart Martins Ferreira, and Milson Evaldo Serafim. "Plant-available soil water capacity: estimation methods and implications." Revista Brasileira de Ciência do Solo 38, no. 2 (April 2014): 464–75. http://dx.doi.org/10.1590/s0100-06832014000200011.

Full text

Abstract:

The plant-available water capacity of the soil is defined as the water content between field capacity and wilting point, and has wide practical application in planning the land use. In a representative profile of the Cerrado Oxisol, methods for estimating the wilting point were studied and compared, using a WP4-T psychrometer and Richards chamber for undisturbed and disturbed samples. In addition, the field capacity was estimated by the water content at 6, 10, 33 kPa and by the inflection point of the water retention curve, calculated by the van Genuchten and cubic polynomial models. We found that the field capacity moisture determined at the inflection point was higher than by the other methods, and that even at the inflection point the estimates differed, according to the model used. By the WP4-T psychrometer, the water content was significantly lower found the estimate of the permanent wilting point. We concluded that the estimation of the available water holding capacity is markedly influenced by the estimation methods, which has to be taken into consideration because of the practical importance of this parameter.

APA, Harvard, Vancouver, ISO, and other styles

7

JONG, R. de, and W. K. SLY. "COMPARISON OF MODELLED SOIL WATER RESERVES ON CANADIAN PRAIRIE SOILS WITH WATER-HOLDING CAPACITIES OF 280 AND 250 mm." Canadian Journal of Soil Science 65, no. 1 (February 1, 1985): 219–23. http://dx.doi.org/10.4141/cjss85-023.

Full text

Abstract:

Based on soil water modelling results of 19 stations, averaged long-term soil water reserves on the Canadian Prairies were compared for two soils having available water-holding capacities of 280 and 250 mm. The soil water reserves of the 250-mm capacity soil were 6.5%, 8.7% and 6.2% less than those of the 280-mm capacity soil on 1 May after a fallow year, 30 June heading time and 1 May after a crop year, respectively. The aridity indices for wheat at the soft dough stage for the 250-mm capacity soil ranged from 4% less in the drier part of the Prairies to 7–9% more in the wetter regions as compared to the 280-mm capacity soil. Water deficits for a perennial crop grown on a 280-mm capacity soil could not be used to infer the deficits on a 250-mm capacity soil because of the model’s sensitivity to rainfall distribution with time. Key words: Soil water, modelling, available water-holding capacity

APA, Harvard, Vancouver, ISO, and other styles

8

Abukari, Ammal. "Influence of Rice Husk Biochar on Water Holding Capacity of Soil in The Savannah Ecological Zone of Ghana." Turkish Journal of Agriculture - Food Science and Technology 7, no. 6 (June 25, 2019): 888. http://dx.doi.org/10.24925/turjaf.v7i6.888-891.2488.

Full text

Abstract:

Soil moisture has a vital role in the cultivation of crops. Its sufficiency and availability to crop- water supplies depends on the management practices of soil and amount of available water to the soil. This study examines the influence of rice husk biochar on the water holding capacity of soil in the savannah ecological zone of Ghana. Increasing rate of rice husk biochar increased water-holding capacity of soils. 4t/ha rice husk biochar showed higher significant differences among the treatments. It is recommended that 4t/ha rice husk biochar should be applied to increase the water-holding capacity of the soil.

APA, Harvard, Vancouver, ISO, and other styles

9

Premanandarajah, Punitha, and Komathy Prapagar. "Improving Nutrient and Water-Holding Capacity in Sandy Regosol by Applying Locally Available Amendments." AGRIEAST: Journal of Agricultural Sciences 8 (January 2, 2016): 30. http://dx.doi.org/10.4038/agrieast.v8i0.9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Araya, Sofanit, Greg Lyle, Megan Lewis, and Bertram Ostendorf. "Phenologic metrics derived from MODIS NDVI as indicators for Plant Available Water-holding Capacity." Ecological Indicators 60 (January 2016): 1263–72. http://dx.doi.org/10.1016/j.ecolind.2015.09.012.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Kusvuran, Alpaslan, and Sebnem Kusvuran. "Using of Microbial Fertilizer as Biostimulant Alleviates Damage from Drought Stress in Guar (Cyamopsis Tetragonoloba (L.) Taub.) Seedlings." International Letters of Natural Sciences 76 (August 2019): 147–57. http://dx.doi.org/10.18052/www.scipress.com/ilns.76.147.

Full text

Abstract:

Drought is a significant environmental stress that limits plant growth and yield. In this study, an investigation of guar, grown under different drought level conditions [(S0: 100% of field capacity), S1 (depletion of 75% the available water holding capacity), S2 (depletion of 50% the available water holding capacity), S3 (depletion of 25% the available water holding capacity), S4 (no applied irrigation water)] with regards to the impact of Chlorella vulgaris based microbial fertilizer on physiological, morphological, and enzymatic activity was performed. Microbial fertilizer applications significantly increased shoot length, fresh and dry weight of the shoot and root, and leaf number and area of guar plants compared to the only drought stress treatments. In addition, following the above-mentioned procedures, there were significant increases in the relative water content, total phenolic and flavonoid contents, superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and glutation reductase (GR) activity. However, the malondialdehyde (MDA) content were significantly decreased. Hence, the results support the administration of a foliar application to the microbial fertilizer containing microalgae in order to increase the guar plant’s defense system, enabling it to tolerate the negative effects resulting from drought stress.

APA, Harvard, Vancouver, ISO, and other styles

12

Lawes, R. A., Y. M. Oliver, and M. J. Robertson. "Integrating the effects of climate and plant available soil water holding capacity on wheat yield." Field Crops Research 113, no. 3 (September 2009): 297–305. http://dx.doi.org/10.1016/j.fcr.2009.06.008.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

KT, Aruna. "Water Use Efficiency, Yield and Crop Coefficient (Kc) of Groundnut crop under different Water Regimes." International Journal of Advances in Scientific Research 3, no. 9 (October 1, 2017): 110. http://dx.doi.org/10.7439/ijasr.v3i9.4421.

Full text

Abstract:

The pot experiment was carried out during September 2015 to January 2016 at instructional farm, College of Agricultural Engineering, UAS Raichur under rain shelter to study the effect of different water regimes, (i.e. T1:100, T2:90, T3:80, T4:70, T5:60 and T6:50) per cent of water application with available moisture holding capacity on grain yield and water use efficiency. Completely Randomized block design with four replications was used in this study. The results showed that there was significant difference between the yield and (WUE) under different levels of irrigation. The total irrigation water applied were (i.e., 211.98, 243.02, 225.78, 155.09, 135.51 and 105.62 mm/plant) under different water regime treatments (100, 90, 80, 70, 60 and 50 %) of available moisture holding capacity (AMHC) respectively. Grain yield productions under different treatments were 106.25, 171.25, 127.50, 75, 55 and 40.75 g/plant/pot at 100, 90, 80, 70, 60 and 50 per cent of AMHC respectively. The results showed that water use efficiency (WUE) at different treatments were 0.50, 0.70, 0.56, 0.48, 0.41 and 0.39 g/mm for (100, 90, 80, 70, 60 and 50 %) per cent of AMHC respectively. Therefore, the 90 % of AMHC treatment (T2) is recommended for groundnut irrigation for water saving. The comparison of actual crop coefficient that obtained by water balance technic in experiment and crop coefficient (Kc) values of groundnut for different crop growth stages were selected based on the values suggested by FAO (Allen et al., 1998) are similar in the treatment of 90 % (T2) of the AMHC. Furthermore, the result showed that the treatment of 90 per cent of Available moisture holding capacity (T2) seemed to be better adapted to product a high crop yield with acceptable yield coupling with water use efficiency in this region.

APA, Harvard, Vancouver, ISO, and other styles

14

GONDIM, RUBENS SONSOL, CELLI RODRIGUES MUNIZ, CARLOS EDUARDO PACHECO LIMA, and CARLOS LEVI ANASTÁCIO DOS SANTOS. "EXPLAINING THE WATER-HOLDING CAPACITY OF BIOCHAR BY SCANNING ELECTRON MICROSCOPE IMAGES." Revista Caatinga 31, no. 4 (December 2018): 972–79. http://dx.doi.org/10.1590/1983-21252018v31n420rc.

Full text

Abstract:

ABSTRACT Biochar is a solid material formed during biomass thermochemical decomposition processes. This organic compound has particular properties that may cause effects on soils depending on its feedstock and processing conditions. Thus, the characteristics and purpose of use of this material must be recognized prior to its use. Two types of biochar, derived from different wood sources, were compared, one from caatinga biome species and another from cashew trees. Two species from caatinga biome were used, jurema-preta (Mimosa tenuiflora Willd. Poir.), and marmeleiro (Croton sonderianus Müll. Arg.). This study aimed to identify the best biochar material regionally available to increase water-holding capacity in the soil, based on laboratory tests and microstructural porosity evaluation. Biochar from Caatinga wood demonstrated an improved water-holding capacity if compared to cashew wood biochar. The particle diameters of 2 and 4 mm showed the highest levels, which were 2,268 g.g-1 for caatinga wood and 0.574 g.g-1 for cashew wood biochars, respectively. While the smaller quantities of macropores and a larger number of micropores (smaller radius) could explain the higher water-holding capacity for biochar from caatinga wood, the thick lignified cell walls of biochar from cashew wood support the idea of a hydrophobic effect contributing to water lower holding capacity.

APA, Harvard, Vancouver, ISO, and other styles

15

Marshall, Jon, Richard Muhlack, Benjamin J. Morton, Lewis Dunnigan, David Chittleborough, and Chi Wai Kwong. "Pyrolysis Temperature Effects on Biochar–Water Interactions and Application for Improved Water Holding Capacity in Vineyard Soils." Soil Systems 3, no. 2 (April 9, 2019): 27. http://dx.doi.org/10.3390/soilsystems3020027.

Full text

Abstract:

Grapevine cane and stalks were considered for pyrolysis at 400 to 700 °C to produce biochar for increasing the water holding capacity of vineyard soil. Feedstocks were pyrolysed using a continuous feed reactor and the resulting biochars characterized in terms of physico-chemical properties, including water retention performance. Hydrophobicity was found in biochar from both feedstocks pyrolysed at 400 °C, but not at higher temperatures. At low soil matric potential, the pyrolysis temperature was the defining variable in determining water retention whereas at higher pressures, the feedstock was the more important variable. Available water content (AWC) of biochar increased with increasing pyrolysis temperatures, with optimal results obtained from grapevine cane at a pyrolysis temperature of 700 °C, which had an AWC 23% higher than a typical clay type soil. Principal component analysis showed variability in water retention of these biochars to be closely associated with the zeta potential, as well as the carbon and ionic content, suggesting that surface charge and hydrophobicity are key properties determining water holding capacity. Pure biochars were superior in water retention performance to typical sandy soils, and so biochar amendment of these soil types may improve water holding (particularly at field capacity). Further study with pot or field trials is recommended to confirm water retention behaviour and assess the feasibility of application under different viticultural scenarios.

APA, Harvard, Vancouver, ISO, and other styles

16

Portoghese, I., V. Iacobellis, and M. Sivapalan. "Analysis of soil and vegetation patterns in semi-arid Mediterranean landscapes by way of a conceptual water balance model." Hydrology and Earth System Sciences Discussions 4, no. 5 (October 19, 2007): 3909–52. http://dx.doi.org/10.5194/hessd-4-3909-2007.

Full text

Abstract:

Abstract. This paper investigates the impact of various vegetation types on water balance variability in semi-arid Mediterranean landscapes, and the different strategies they may have developed to succeed in such water-limited environments. Water balance constraints are assumed to dominate the organization of landscapes and a conceptual bucket approach is adopted to model the temporal water balance dynamics, with vegetation water use efficiency being parameterized through the use of empirically obtained crop coefficients as surrogates of vegetation behavior in various developmental stages. Sensitivity analyses with respect to the root zone depth and soil water holding capacity are carried out with the aim of investigating the existence of preferential soil-vegetation associations and, hence, the spatial distribution of vegetation types within the study region. Based on these sensitivity analyses the degrees of suitability and adaptability of each vegetation type to parts of the study region are explored with respect of the soil water holding capacity, and the model results were found to be able to explain the observed affinity patterns. Finally, the existence of such preferential association between soil water holding capacity and vegetation species is verified through an extensive soil survey available in the study region.

APA, Harvard, Vancouver, ISO, and other styles

17

Zhao, Weixia, Jiusheng Li, Rumiao Yang, and Yanfeng Li. "Crop Yield and Water Productivity Responses in Management Zones for Variable-Rate Irrigation Based on Available Soil Water Holding Capacity." Transactions of the ASABE 60, no. 5 (2017): 1659–67. http://dx.doi.org/10.13031/trans.12340.

Full text

Abstract:

Abstract. Effective management of variable-rate irrigation (VRI) is a critical factor for maximizing the benefit of a VRI system. In this study, the influences of soil properties on winter wheat and summer maize were studied to verify whether differences in soil available water holding capacity (AWC) had an influence on crop growth parameters, yield, and water productivity (WP). A center-pivot VRI system was employed to deliver irrigation water across the field in an alluvial flood plain in China, and AWC was used to delineate VRI management zones. Three management zones with substantial differences in AWC were created, with AWC varying from 152 to 161 mm, from 161 to 171 mm, and from 171 to 185 mm for zones 1, 2, and 3, respectively. All zones were managed using the same allowed depletion. In the two-year study, the seasonal irrigation amount was basically equivalent among management zones for both winter wheat and summer maize. Differences in crop growth parameters were detected in plant height and leaf area index for winter wheat. The maximum plant height and leaf area index observed in zone 2 were 5 cm and 2.1 greater, respectively, than in the other zones. For both winter wheat and summer maize, the highest yield and WP were observed in zone 2, except for summer maize WP in the 2014 season. Compared with the average value for this field, the yields in zone 2 were 27% and 23% greater for winter wheat and 4% and 11% greater for summer maize in the 2014 and 2015 seasons, respectively. We demonstrate that AWC is an effective parameter for zone identification in VRI management, and differences in AWC and the layered-textural soils in a field may influence the crop growth parameters, yield, and WP of winter wheat and summer maize. Keywords: Center-pivot irrigation, Critical soil moisture deficit, Management zone, Summer maize, Variable-rate irrigation, Winter wheat.

APA, Harvard, Vancouver, ISO, and other styles

18

Assi, Amjad T., Rabi H. Mohtar, Erik F. Braudeau, and Cristine L. S. Morgan. "Quantification of Available Water Capacity Comparing Standard Methods and a Pedostructure Method on a Weakly Structured Soil." Transactions of the ASABE 62, no. 2 (2019): 289–301. http://dx.doi.org/10.13031/trans.13073.

Full text

Abstract:

Abstract. The purpose of this study was to evaluate the use of the pedostructure concept to determine the soil available water capacity, specifically the field capacity (FC). Pedostructure describes the soil aggregate structure and its thermodynamic interaction with water. Specifically, this work compared the calculation of soil water-holding properties based on the pedostructure concept with other standard methods for determining FC and permanent wilting point (PWP). The standard methods evaluated were the FAO texture estimate (FAO method), the Saxton-Rawls pedotransfer functions (PTFs method), and the water content at predefined soil suction (330 and 15,000 hPa) as measured with a pressure plate apparatus (PP method). Additionally, two pedostructure methods were assessed: the thermodynamic water retention curve (TWRC method) and the thermodynamic pedostructure (TPC method). Undisturbed loamy fine sand soil from a field in Millican, Texas, was analyzed at both the Ap and E horizons. The results showed that the estimated water content at FC and PWP for the three standard methods and for the TWRC method were in relative agreement. However, the TPC method used characteristic transition points in the modeled contents of different water pools in the soil aggregate and was higher for the Ap horizon, but in agreement with the other methods for the E horizon. For example, for the Ap horizon of the soil analyzed in this study, the FC estimated with the standard and TWRC methods ranged from 0.073 to 0.150 m3H2O m-3soil, while the TPC method estimate was 0.221 m3H2O m-3soil. Overall, the different methods showed good agreement in estimating the available water; however, the results also showed some variations in these estimates. It is clear that the TPC method has advantages over the other methods in considering the soil aggregate structure and modeling the soil water content within the aggregate structure. The thermodynamic nature of the TPC method enabled the use of both the soil shrinkage curve and the water retention curve in a weakly structured soil. It is expected that the TPC method would provide more comprehensive advances in understanding the soil water-holding properties of structured soils with higher clay contents. Keywords: Available water, Field capacity, Pedostructure, Pedotransfer functions, Permanent wilting point.

APA, Harvard, Vancouver, ISO, and other styles

19

Basiri Jahromi, Nastaran, Amy Fulcher, Forbes Walker, and James Altland. "Optimizing Substrate Available Water and Coir Amendment Rate in Pine Bark Substrates." Water 12, no. 2 (January 29, 2020): 362. http://dx.doi.org/10.3390/w12020362.

Full text

Abstract:

Water resources can be used more efficiently by including sustainable substrate components like coir that increase water-holding capacity. The first objective of this study was to evaluate the impact of coir amendment rate on plant available water and plant gas exchange, with the goal of optimizing substrate available water and determining the optimum coir amendment rate in a greenhouse environment. The second objective was to establish the optimum method of determining plant available water using either plant gas exchange parameters or substrate physical properties. Greenhouse experiments were conducted with Hydrangea paniculata ‘Jane’ (Little Lime® hardy hydrangea) potted with one of five different coir rates (0%, 10%, 25%, 40% and 65%) mixed with pine bark on a volume basis. Plant gas exchange parameters and substrate water content were measured daily over a range of increasingly drier substrate moisture contents. Actual photosynthetic rates increased with increasing coir amendment rate and were highest with 65% coir amendment. Amending pine bark with coir increased the water storage capacity, plant available water, and plant gas exchange parameters. Results suggest that 65% coir amendment rate was the optimum amendment rate among those tested in a greenhouse environment and plant photosynthetic rate was the better method of determining plant available water.

APA, Harvard, Vancouver, ISO, and other styles

20

Sivapalan, S. "Benefits of treating a sandy soil with a crosslinked-type polyacrylamide." Australian Journal of Experimental Agriculture 46, no. 4 (2006): 579. http://dx.doi.org/10.1071/ea04026.

Full text

Abstract:

The productivity of sandy soils is mostly limited by their low water-holding capacity and excessive deep percolation losses, which reduce the efficiency of water and fertiliser use by plants. The effect of a crosslinked-type polyacrylamide, ALCOSORB 400, on water-holding capacity of a sandy soil, siliceous sands, was studied under the laboratory and glasshouse conditions. Water-holding capacity of the soil exposed to 0.01 MPa increased by 23 and 95% by adding 0.03 and 0.07% of polyacrylamide to the soil, respectively. This indicated that the soil treated with polyacrylamide was able to store more water than untreated soil, thereby reducing the potential losses due to deep percolation in sandy soils. However, the polyacrylamide in the treated soil did not significantly increase the quantity of water released from the soil by increasing the pressure from 0.01 to 1.5 MPa. The results from the first glasshouse experiment demonstrated that the excess amount of water stored in the soil by polyacrylamide was available to plants and resulted in higher water use and grain production. Consequently, there was a 12 and 18 fold increase in water use efficiency of soybean plants grown in soils treated with 0.03 and 0.07% polyacrylamide, respectively. The results from the second glasshouse experiment demonstrated that increasing amounts of polyacrylamides in a sandy soil can extend the irrigation interval without any adverse effect on the grain yield of soybeans.

APA, Harvard, Vancouver, ISO, and other styles

21

Leenaars, Johan G. B., Lieven Claessens, Gerard B. M. Heuvelink, Tom Hengl, Maria Ruiperez González, Lenny G. J. van Bussel, Nicolas Guilpart, Haishun Yang, and Kenneth G. Cassman. "Mapping rootable depth and root zone plant-available water holding capacity of the soil of sub-Saharan Africa." Geoderma 324 (August 2018): 18–36. http://dx.doi.org/10.1016/j.geoderma.2018.02.046.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Nusier, Osama K. "Influence of peatmoss on hydraulic properties and strength of compacted soils." Canadian Journal of Soil Science 84, no. 1 (February 1, 2004): 115–23. http://dx.doi.org/10.4141/s02-020.

Full text

Abstract:

Due to its high organic matter content, peatmoss can be highly beneficial to agricultural soil. In this research, the impact of varying organic matter contents at different compaction efforts on water retention, saturated hydraulic conductivity, and modulus of rupture of three soils (sandy loam, clay loam, and clay) has been investigated under laboratory conditions. Compaction changed the ability of the soils to hold water, increased modulus of rupture, and decreased the plant-available water-holding capacity of the soils. On the other hand, organic matter generally increased the ability of the soils to hold water, expanded the available water capacity, and decreased the modulus of rupture of compacted soils. Key words: Peatmoss, water retention, saturated hydraulic conductivity, modulus of rupture

APA, Harvard, Vancouver, ISO, and other styles

23

Argo, William R., and John A. Biernbaum. "491 PB 163 A METHOD FOR QUANTIFYING PLANT AVAILABLE WATER-HOLDING CAPACITY AND WATER ABSORPTION POTENTIAL IN CONTAINER MEDIA UNDER PRODUCTION CONDITIONS." HortScience 29, no. 5 (May 1994): 501f—501. http://dx.doi.org/10.21273/hortsci.29.5.501f.

Full text

Abstract:

Hybrid impatiens were grown in 15 cm pots containing one of six root medium. After seven weeks, plant available water holding capacity (AWHC) was measured as the difference between the drained weight of the plant and pot after a one hour saturation and the weight of the pot when the plant wilted. Water absorption potential (WAP) was calculated as the capacity of each root medium to absorb applied irrigation water up to the AWHC and was measured at two moisture levels with top watering (two leaching fractions), drip irrigation (two leaching fractions) and flood subirrigation. Top watering moist media (initial AWHC = 35%) with leaching fractions of 30+ % was me most efficient method of rewetting media and was the only irrigation method tested to obtain WAP's of 100%. In comparison, flood subirrigation was the least efficient method of rewetting media with WAP of 27% for dry media (initial AWHC = 0%), and obtained a total WAP of 55% for moist media (initial AWHC = 23%). In media comparisons, the incorporation of a wetting agent into a 70% peat/30% bark mix at planting increased the WAP compared to the same media without a wetting agent with nine of the ten irrigation treatments.

APA, Harvard, Vancouver, ISO, and other styles

24

Nimje, P. M., and Jagdish Seth. "Effect of phosphorus, farmyard manure and nitrogen on some soil properties in a soya bean-maize sequence." Journal of Agricultural Science 107, no. 3 (December 1986): 555–59. http://dx.doi.org/10.1017/s0021859600069719.

Full text

Abstract:

SUMMARYThe effects of applying phosphorus, farmyard manure (FYM) and nitrogen on some soil properties were studied at the end of 2 years of field experimentation at New Delhi, India. Each year a crop of soya bean sown in the rainy season received phosphorus and farmyard manure and maize sown in winter received nitrogen fertilizer. Phosphorus was applied to soya bean at 0, 40 and 80 kg P2O5/ha, farmyard manure at 0 and 15 t/ha and nitrogen to maize at 0, 60 and 120 kg N/ha. Phosphorus application increased organic C, total N and available P status of the soil. It also improved bulk density and water-holding capacity of the soil. Farmyard manure increased organic C, total N, available P and K and pH of the soil, but decreased EC and bulk density of the soil. Water-holding capacity of the soil was increased by FYM. N fertilizer increased organic C and total N only.

APA, Harvard, Vancouver, ISO, and other styles

25

Chacha, Mwita Solomon, Banyikwa Andrew, and Maheswara Rao Vegi. "Amendment of Soil Water Retention and Nutrients Holding Capacity by Using Sugar Cane Bagasse." Current Agriculture Research Journal 7, no. 2 (May 15, 2019): 224–35. http://dx.doi.org/10.12944/carj.7.2.10.

Full text

Abstract:

Sugarcane bagasse (SCB)is byproduct of sugarcane industry can be used as soil amendments to improve soil hydro, physical-chemical characteristics. It also provides reasonable economic means to recycle these in an environmentally friendly manner. The soil samples were studied for different soil characteristics collected from different sites of Dodoma city, Tanzania. Soil sample with poor water holding capacity selected and made into six treatments by different percentages of sugarcane bagasse 0, 2, 5, 10,20 and 100% in triplicates for each treatment. The result showed that the water holding capacity of the soil increased from 26.85 to 84.08 % representing 3.16 times.The soil of Dodoma have low organic matter (438.6 - 1126.6 mg/kg), and deficient in K+ (0.5 cmol/kg), Ca2+ (2.8 cmol/kg), Mg2+ (1.3 mg /kg), Na+ (1.03 cmol/kg) and cation exchange capacity (5 cmol/kg). The available K+, Ca2+, Mg2+ contents of soil increased by 13.87, 22.79, 33.13 and 43.61% with the application of 2, 5, 10 and 20 % of sugarcane bagasse, respectively. Different levels of SCB positively influence the hydro, physico-chemical properties of soil. Utilization of SCB as organic fertilizer was found to save the water cost and chemical fertilizer along with minimizing environmental pollution. Application of 10% of sugarcane bagasse was found to be the standard dose to achieve important hydo, physicochemical properties of soil to a required level.

APA, Harvard, Vancouver, ISO, and other styles

26

Arefieva, O. D., A. V. Perfilev, A. V. Nazarkina, T. V. Ksenik, A. A. Yudakov, and A. A. Kondratyeva. "Using Modified Perlites to Treat Mine Water of Abandoned Coal Mines in Partizansk City, Primorskiy Krai." Advanced Materials Research 726-731 (August 2013): 4041–44. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.4041.

Full text

Abstract:

So far, various methods and schemes for mine water treatment are available. Finding new filtering materials capable for physical holding of solid particles and possessing sorption features is of great concern. This paper studies the adsorption capacity of modified perlite (Nachikinsk deposit, Kamchatka peninsula) of various size distribution to treat mine water of the abandoned Nagornaya mine, Partizansk city (Primorskiy Krai). Basic hydrochemical parameters of mine water when filtering through expanded water-repelling perlite.

APA, Harvard, Vancouver, ISO, and other styles

27

Bohnert, Catherine A., Christopher Starbuck, and Stephen Anderson. "Amending a Gravel Based Growing Medium with Calcined Clay Improves Physical Properties and Seedling Growth." Journal of Environmental Horticulture 26, no. 3 (September 1, 2008): 49–156. http://dx.doi.org/10.24266/0738-2898-26.3.49.

Full text

Abstract:

Abstract The Missouri Gravel Bed (MGB) is a system that uses pea gravel with 10% sand (v/v) as a root growth medium, allowing plants to be removed from the gravel and planted, bare root, during the growing season. However, the low water holding capacity of the medium necessitates frequent irrigation. This study was conducted to determine the effects of amending pea gravel with calcined clay (Terra-Green®) on the physical properties of the medium and on growth of Gymnocladus dioicus (L.) K. Koch seedlings. Adding 10% sand (v/v) increased water holding capacity of the medium slightly at water tensions above 1 kPa. Gravel amended with 40% calcined clay had 16% air-filled porosity and had 3.5 times more plant available water than gravel with sand only. Dry weights of seedlings grown in gravel amended with 40% calcined clay and no sand were over twice as great as those of seedlings grown in the standard MGB medium.

APA, Harvard, Vancouver, ISO, and other styles

28

Sampson, D. A., and H. L. Allen. "Regional influences of soil available water-holding capacity and climate, and leaf area index on simulated loblolly pine productivity." Forest Ecology and Management 124, no. 1 (November 1999): 1–12. http://dx.doi.org/10.1016/s0378-1127(99)00054-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

DEMİR, Y., and A. DOĞAN DEMİR. "THE EFFECT OF ORGANIC MATTER APPLICATIONS ON THE SATURATED HYDRAULIC CONDUCTIVITY AND AVAILABLE WATER-HOLDING CAPACITY OF SANDY SOILS." Applied Ecology and Environmental Research 17, no. 2 (2019): 3137–46. http://dx.doi.org/10.15666/aeer/1702_31373146.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Norizan, Mohd Shahkhirat, Aimrun Wayayok, Ahmad Fikri Abdullah, Muhammad Razif Mahadi, and Yahya Abd Karim. "Spatial Variations in Water-Holding Capacity as Evidence of the Need for Precision Irrigation." Water 13, no. 16 (August 13, 2021): 2208. http://dx.doi.org/10.3390/w13162208.

Full text

Abstract:

Malaysia receives a lot of water from its two main monsoon periods. Generally, there is a lot of precipitation throughout the year, with drought periods lasting less than three months. To date, irrigation has been treated homogenously, even though soil properties can vary spatially over a field, requiring site-specific applications. The aim of this study was to establish an irrigation management zone (IMZ) covering 23.4 ha, which was previously determined under the same soil series. Soil sampling was done according to a grid system over an area of 100 m × 100 m. Three soil depth ranges were examined for every sampling point, namely 0–30, 30–60, and 60–90 cm from the soil surface. Samples were taken to a laboratory for physical analysis and determination of the available water-holding capacity (AWHC). Delineation of AWHC values was achieved using GIS software and the Kriging method. Estimated irrigation depth (EID) data for the plantation were collected for the years 2016 and 2017. Afterward, EID and total net irrigation (TNI) data were simulated in the FAO Cropwat model and compared. The results showed that clay, sand, and organic matter (OM) distributions varied with soil depth; however, no strong correlation was found between these variable with AWHC. The IMZ was classified into three areas named zones A, B, and C, ranging from 79 to 167 mm. The crop water requirement (CWR) was 667 mm in 2016 but only 260 mm in 2017. Based on the AWHC values, the EID for 2016 was found to be below the TNI requirement range of about 106 to 110 mm. In contrast, the EID range was approximately 34 to 62 mm and above TNI requirements for 2017. This study indicates that water inputs for irrigation can be optimized with knowledge of the water-holding capacity of a specific soil. Subsequently, this can be related to crop yield and the impact on sustainable agriculture.

APA, Harvard, Vancouver, ISO, and other styles

31

Çakir, Recep. "Water holding properties and soil water types in fine textured Vertisol soils of Thrace region in Turkey." Polish Journal of Soil Science 52, no. 2 (November 21, 2019): 247. http://dx.doi.org/10.17951/pjss.2019.52.2.247.

Full text

Abstract:

<p>The study was carried out on 16 selected model soil profiles, located on lands covered with soils exhibiting vertic properties in Thrace Region of Turkey. Different horizons and/or sub-horizons of 16 characteristic soil profiles were evaluated in field or laboratory conditions in terms of water holding capacity and water types properties. Total of 105 soil samples were analyzed for routine physical characteristics. Soil water holding capacity was determined applying negative potentials (Ψ) of -0.33 bar, -15.5 bar and -31.5 bar (pF 2.54; 4.2 and 4.5), using a pressure-membrane extraction apparatus. In addition to gravitational, available, unavailable and hygroscopic soil water types, the soil samples were investigated also in terms of crystal-lattice water content. The highest amounts of the listed water types were determined in soils of Büyük Mandira, Türkgeldi and Seymen containing the highest rates of smectite clay mineral. The mass percentage (Pw) rates of the mentioned water types of the investigated profies varied in the ranges of 29.1–66.3%, 10–2.15%, 22.0–32.4%, 6.0–9.0% and 5.6–8.6%, respectively. Though the mass percentages of enumerated water types in the soils of Osmanli and Yeni Mahalle, all owning high sand and lower clay content on the other hand, are between 28.9–40.6%, 6.1–15.5%, 7.4–16.8%, 2.4–4.8% and 1.7–4.4%, respectively.</p>

APA, Harvard, Vancouver, ISO, and other styles

32

Zhou, Beibei, and Xiaopeng Chen. "Effect of Nano-Carbon on Water Holding Capacity in a Sandy Soil of the Loess Plateau." Earth Sciences Research Journal 21, no. 4 (October 1, 2017): 189–95. http://dx.doi.org/10.15446/esrj.v21n4.66104.

Full text

Abstract:

The poor water retention capacity of sandy soils commonly aggregate soil erosion and ecological environment on the Chinese Loess Plateau. Due to its strong capacity for absorption and large specific surface area, the use of nanocarbon made of coconut shell as a soil amendment that could improve water retention was investigated. Soil column experiments were conducted in which a layer of nanocarbon mixed well with the soil was formed at a depth of 20 cm below the soil surface. Four different nanocarbon contents by weight (0%, 0.1%, 0.5%, and 1%) and five thicknesses of the nanocarbon- soil mixture layer ranging from 1 to 5 cm were considered. Cumulative infiltration and soil water content distributions were determined when water was added to soil columns. Soil Water Characteristic Curves (SWCC) were obtained using the centrifuge method. The principal results showed that the infiltration rate and cumulative infiltration increased with the increases of nanocarbon contents, to the thicknesses of the nano carbon-soil mixture layer. Soil water contents that below the soil-nano carbon layer decreased sharply. Both the Brooks-Corey and van Genuchten models could describe well the SWCC of the disturbed sandy soil with various nano carbon contents. Both the saturated water content (θs), residual water content (θr) and empirical parameter (α) increased with increasing nano carbon content, while the pore-size distribution parameter (n) decreased. The available soil water contents were efficiently increased with the increase in nanocarbon contents.

APA, Harvard, Vancouver, ISO, and other styles

33

Wankhade, R. R. "Physico-Chemical Analysis of Soil from some Farms of Digras Region of District Yavatmal in Maharashtra, India." Scholedge International Journal of Multidisciplinary & Allied Studies ISSN 2394-336X 2, no. 10 (November 9, 2015): 1. http://dx.doi.org/10.19085/journal.sijmas021001.

Full text

Abstract:

The yield of the crop is dependent of the type of the soil and proper cultivation. Hence it is necessary to study some parameters of the soil. So in the present study is undertaken to determine the physico-chemical characteristics of some samples of soil from some farms of nearby villages of Digras region, Dist. Yavatmal.The soil characterization was carried out with respect to particle size distribution, bulk density,maximum water holding capacity, available water capacity, hydraulic conductivity, soil pH, electrical conductivity, cation exchange capacity, free calcium carbonate and organic carbon. The important observation during the study is that the parameters were fluctuating for farm to farm of nearby villages.

APA, Harvard, Vancouver, ISO, and other styles

34

Pinkerton, Taylor C., Amjad T. Assi, Valentini A. Pappa, Eunsung Kan, and Rabi H. Mohtar. "Impact of Dairy Wastewater Irrigation and Manure Application on Soil Structural and Water-Holding Properties." Transactions of the ASABE 64, no. 3 (2021): 857–68. http://dx.doi.org/10.13031/trans.14351.

Full text

Abstract:

HighlightsQuantitative evaluation was performed of dairy waste on soil water-holding capacity.Considering the soil variability on a farm is significant for management practices.Soil aggregate structure plays a pivotal role in studying the impact of waste reuse.Abstract. The livestock sector contributes about 40% of global agricultural output and uses over 30% of total feed-crop land. The sector’s continuing growth has led to increased technology and larger-scale, commercialized agriculture, and it correlates to growth in by-products and waste, which can compromise the environment and human health. Although organic manure is an excellent soil fertilizer whose nutrient content increases crop yield, untreated and/or overapplied manure pollutes local water resources and can alter soil aggregate structure, potentially affecting soil health and available water. Proper livestock waste management is essential for sustainable food production. Waste reuse strategies exist, with goals such as minimizing freshwater consumption, improving food production, and contributing to energy production, However, each strategy has tradeoffs in environmental, energy, or monetary costs. This study provides a quantitative approach to evaluating waste impact on soil health and helps to better manage irrigation practices and water supply gaps in arid and semi-arid areas by better understanding how management practices affect physical soil health. The TypoSoil apparatus was used to measure and analyze the hydrostructural parameters (water-holding capacity and soil structure) of fine sandy loam (A horizon) and sandy clay (B horizon). Soils from the Texas A&M AgriLife Research Dairy (Stephenville, Texas) were collected and compared with control (untouched) soils. Waste (manure, bedding materials, wash water) was separated into liquid (passed through a natural lagoon treatment process) and solid components (applied as fertilizer). Approximately half the wastewater was reused as wash water, the remainder for irrigation. Although the soil varied substantially between sample locations, a statistically significant difference existed between the control and manure/wastewater applications in both the A and B horizons. Both applications improved plant-available water (AW) in the A horizon (40% and 30%, respectively) but deteriorated AW in the B horizon (25% and 30%). Thus, dairy farm waste is a viable source for agricultural use. Keywords: Available water capacity, Pedostructure, Soil health, Soil shrinkage curve, Soil water characteristic curve.

APA, Harvard, Vancouver, ISO, and other styles

35

Wang, Kai Feng, Na Peng, and De Liang Liu. "Physicochemical Properties of Artificial Soil Composed of Sewage Sludge, Fly Ash, and Slag." Applied Mechanics and Materials 178-181 (May 2012): 880–84. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.880.

Full text

Abstract:

The pH, electric conductivity (EC), nutrients, heavy metals, water-holding capacity and water permeability of stabilized sewage sludge were investigated by mixing municipal sewage sludge with alkaline fly ash and slag. The results indicate that the evaporation of soil moisture increases and water-holding capacity decreases in these artificial soils with an increase of slag, and the infiltration rate of artificial soils increases to improve its water permeability by adding slag to sewage sludge. The pHs of stabilized artificial soils range from 7.5 to 8.0 for a weak alkaline soil, which tend to be neutral by adding slag to sewage sludge. The ECs of stabilized artificial soils range from 2.93 to 3.71 mS•cm-1, indicating the higher salt content in these artificial soils. The nutrient contents of stabilized sewage sludge are up to a high fertilizer level and available nutrients increase with the increase of the ratio of slag to sewage sludge in these artificial soils. Cd, Ni, Pb, Cu and Zn for all artificial soil treatments are lower than control standards for pollutants in sludge and fly ash for Agricultural use.

APA, Harvard, Vancouver, ISO, and other styles

36

AINA, P. O., and S. P. PERIASWAMY. "ESTIMATING AVAILABLE WATER-HOLDING CAPACITY OF WESTERN NIGERIAN SOILS FROM SOIL TEXTURE AND BULK DENSITY, USING CORE AND SIEVED SAMPLES." Soil Science 140, no. 1 (July 1985): 55–58. http://dx.doi.org/10.1097/00010694-198507000-00007.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Hussain, Altaf, Gail Classens, Sydne Guevara-Rozo, Jonathan A. Cale, Rahmatollah Rajabzadeh, Brosnon R. Peters, and Nadir Erbilgin. "Spatial variation in soil available water holding capacity alters carbon mobilization and allocation to chemical defenses along jack pine stems." Environmental and Experimental Botany 171 (March 2020): 103902. http://dx.doi.org/10.1016/j.envexpbot.2019.103902.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Dham, Mahir, Bjorn Birgisson, and Andrew J. Boyd. "The Determination of Bound Water in Waste Phosphatic Clay." Research Letters in Materials Science 2009 (2009): 1–3. http://dx.doi.org/10.1155/2009/854701.

Full text

Abstract:

Phosphatic clay is a by-product of phosphate strip mining, particularly in Florida, USA. This waste material occupies about 100 000 acres of land which could be utilized for other causes. Thus, its use as an alternating cementing material for the addition into the mixing matrix of cement paste and concrete to yield higher strength would be profitable for both materials involved. But the biggest drawback faced is that the phosphatic clay possesses high water holding capacity. The water is thus not available for mixing purposes when added to cement paste and concrete and is thus known as bound water. It is therefore essential to determine the amount of bound water to phosphatic clay which shall not be available for the hydration reaction of cement in cement paste and concrete.

APA, Harvard, Vancouver, ISO, and other styles

39

Abad, Manuel, Fernando Fornes, Carolina Carrión, Vicente Noguera, Patricia Noguera, Ángel Maquieira, and Rosa Puchades. "Physical Properties of Various Coconut Coir Dusts Compared to Peat." HortScience 40, no. 7 (December 2005): 2138–44. http://dx.doi.org/10.21273/hortsci.40.7.2138.

Full text

Abstract:

Selected physical properties of 13 coconut coir dusts from Asia, America, and Africa were compared to physical properties of sphagnum peat. All properties studied differed significantly between and within sources, and from the peat. Coir dusts from India, Sri Lanka, and Thailand were composed mainly of pithy tissue, whereas most of those from Costa Rica, Ivory Coast, and Mexico contained abundant fiber which was reflected by a higher coarseness index (percentage by weight of particles larger than 1 mm in diameter). Coir dust was evaluated as a lightweight material, and its total porosity was above 94% (by volume). It also exhibited a high air content (from 24% to 89% by volume) but a low easily available and total water-holding capacity which ranged from <1% to 36% by volume and from 137 to 786 mL·L–1, respectively. Physical properties of coir dust were strongly dependent on particle size distribution. Both easily available and total water-holding capacity declined proportionally with increasing coarseness index, while air content was positively correlated. Relative hydraulic conductivity in the range of 0 to 10 kPa suction dropped as particle size increased. Coir dusts with a particle size distribution similar to peat showed comparatively higher aeration and lower capacity to hold total and easily available water. An air–water balance similar to that in peat became apparent in coir dust at a comparatively lower coarseness index (29% vs. 63% by weight in peat). Stepwise multiple regression analysis showed that particles with diameters in the range of 0.125 to 1 mm had a remarkable and highly significant impact on the physical properties studied, while particles <0.125 mm and >1 mm had only a slight or nonsignificant effect.

APA, Harvard, Vancouver, ISO, and other styles

40

Bryce, Alisa, and Andrew Porter. "Soil solutions: improving water management across Sydney's public open spaces." Water Supply 10, no. 5 (December 1, 2010): 771–75. http://dx.doi.org/10.2166/ws.2010.160.

Full text

Abstract:

With the support and assistance of Sydney Water Corporation (SWC), URS Australia Pty Ltd (URS) have developed an Irrigation and Landscape Efficiency Assessment methodology (ILA) to improve the management of public open space across Sydney. To date over 180 ILAs have been conducted, with a number of key management issues identified. Excessive watering from poor irrigation scheduling practises, low soil water-holding capacity (from shallow or sandy textured soils); and inappropriate location of ornamental plantings are regularly encountered. This paper explores the key issues impacting water management across Sydney's public open spaces, and highlights methods available to rectify these issues and reduce potable water use into the future.

APA, Harvard, Vancouver, ISO, and other styles

41

Zhang, Shi Xiu, Zhi Yong Zhang, Si Wei Jiang, and Jun Yu. "Effect of Different Management Systems on Soil Water Content in the Black Soil of Northeast China." Advanced Materials Research 610-613 (December 2012): 2912–15. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.2912.

Full text

Abstract:

Soil water content is considered to be one of the most important factors affecting crop productivity. In this study, the different management practices were investigated in the black soil of Northeast China to evaluate the efficacy of practices on soil water content. The results showed that the application of organic matter, large-scale machine and residues retention have positive effects on soil water content. Saturated water content (SWC), field water-holding capacity (WHC), and available water content (AWC) were strongly correlated with soil bulk density and soil organic matter. Our results suggested that proper management systems could improve soil water use efficiency in black soil region of Northeast China.

APA, Harvard, Vancouver, ISO, and other styles

42

Maselesele, Dembe, John B. O. Ogola, and Romeo N. Murovhi. "Macadamia Husk Compost Improved Physical and Chemical Properties of a Sandy Loam Soil." Sustainability 13, no. 13 (June 22, 2021): 6997. http://dx.doi.org/10.3390/su13136997.

Full text

Abstract:

Poor soil fertility caused mainly by low and declining soil organic carbon is one of the major constraints limiting crop productivity in tropical and subtropical regions of South Africa. We evaluated the effect of macadamia husk compost (MHC) on selected chemical and physical properties of a sandy loam soil in NE South Africa in two successive seasons. The treatments, laid out in randomised, complete block design and replicated four times, were: (i) zero control, (ii) inorganic fertilizer (100:60:60 NPK Kg ha−1), (iii) MHC at 15 t ha−1, and (iv) MHC at 30 t ha−1. Soil bulk density; water holding capacity; soil pH; electrical conductivity (EC); organic carbon; total N; and available P, K, Ca, Mg, Al, Zn, and Cu were determined at 0–15 cm soil depth. Macadamia husk compost application decreased bulk density and increased water holding capacity. MHC and inorganic fertilizer increased soil pH, organic carbon, total N, C:N ratio, available P, exchangeable cations, and micronutrients but the effect was more pronounced under MHC treatments in both seasons. The positive effect of MHC on soil physicochemical properties was associated with an increase in soil organic carbon due to MHC application; hence, MHC may offer a sustainable option of increasing soil productivity, particularly in areas characterised by low SOC.

APA, Harvard, Vancouver, ISO, and other styles

43

Prakongkep, Nattaporn, Robert J. Gilkes, Worachart Wisawapipat, Parapond Leksungnoen, Chanida Kerdchana, Tawatchai Inboonchuay, Evelyne Delbos, et al. "Effects of Biochar on Properties of Tropical Sandy Soils Under Organic Agriculture." Journal of Agricultural Science 13, no. 1 (December 15, 2020): 1. http://dx.doi.org/10.5539/jas.v13n1p1.

Full text

Abstract:

This study evaluated the influences of biochar made from local agricultural wastes on sandy soils in farmer fields where biochar has been used as a soil amendment for more than three years. The major objective of this study was to gain insight into the effects of long-term biochar application on properties of sandy soil. Unamended soil properties were compared to biochar-amended soils properties using the paired samples t-test (p < 0.05). The statistical results of the study indicated that cation exchange capacity, exchangeable potassium, available phosphorus, field capacity, plant available water, water-stable aggregate size fractions (> 1 and < 0.25 mm), median aggregate size and aggregate stability were significantly different at p < 0.05. Clearly, biochar present for 3 or more years can improve soil physicochemical properties. We conclude that sandy soil properties, especially soil physical properties, are very strongly affected by biochar application combined with conservative soil management. Biochars affect both physical and biological mechanisms of soil aggregate formation because the biochar particle sizes influence the arrangement of clay on biochar and biochar grains provide a favorable microbial habitat and food source for fungi creating microorganism-biochar-soil associations which enhance water-stable aggregates and water holding capacity.

APA, Harvard, Vancouver, ISO, and other styles

44

NAETH, M. A., A. W. BAILEY, D. S. CHANASYK, W. B. McGILL, and R. T. HARDIN. "CHANGES IN SOIL WATER REGIME AFTER PIPELINE CONSTRUCTION IN SOLONETZIC MIXED PRAIRIE RANGELAND." Canadian Journal of Soil Science 68, no. 3 (August 1, 1988): 603–10. http://dx.doi.org/10.4141/cjss88-058.

Full text

Abstract:

A study was conducted in the Solonetzic mixed prairie rangeland of southern Alberta to evaluate soil water responses to pipeline construction. Five adjacent natural gas pipelines on a series of rights-of-way (ROW) were studied at three sites. The pipelines were installed in 1957, 1963, 1968, 1972 and 1981. Soil water contents were monitored throughout the year using a neutron probe. Water-holding capacity of the soil was determined using the pressure-plate extraction method. Pipeline construction in Solonetzic mixed prairie ecosystems caused total soil water to a depth of 50 cm in the trench to increase over that in the undisturbed prairie. There were no significant effects on available water capacity. Berm construction over the trench impeded overland flow, particularly during springmelt, causing short periods of ponding. Construction activity had no significant effect on total water within zones of a given ROW. Soil water status was affected for a short period of time with a trend towards predisturbance conditions within 10 yr. Key words: Pipelines, Solonetzic soils, rangeland, reclamation, soil water

APA, Harvard, Vancouver, ISO, and other styles

45

Libohova, Z., C. Seybold, D. Wysocki, S. Wills, P. Schoeneberger, C. Williams, D. Lindbo, D. Stott, and P. R. Owens. "Reevaluating the effects of soil organic matter and other properties on available water-holding capacity using the National Cooperative Soil Survey Characterization Database." Journal of Soil and Water Conservation 73, no. 4 (2018): 411–21. http://dx.doi.org/10.2489/jswc.73.4.411.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Pathak, Chakresh, A. K. Chopra, Vinod Kumar, and Sunil Sharma. "Effect of sewage-water irrigation on physico-chemical parameters with special reference to heavy metals in agricultural soil of Haridwar city." Journal of Applied and Natural Science 3, no. 1 (June 1, 2011): 108–13. http://dx.doi.org/10.31018/jans.v3i1.166.

Full text

Abstract:

The present study revealed that use of sewage for irrigation of agricultural soil of Haridwar city improved the water holding capacity (+27.98%), electrical conductivity (+196.15%), sulphate (+2.34%), organic carbon (+30.48%), total Kjeldhal nitrogen (+87.5%), available potassium (+25.77%) and available phosphorous (+59.97%) and fertility status of the soil in comparison to natural water irrigated soil. Further sewage irrigation also resulted in a significant build-up of total Pb (+98.95%), Ni (+128.29%), Cu (+253.17%), Fe (+39.74%), Cd (+30.92%), Zn (+696.03%) and Cr (+13.15%) than the natural water irrigated soil. The mean concentrations of these metals were below the permissible limits of Indian standards. The enrichment factor (Ef) for Cu (9.62) was maximum and minimum for Cr (1.13).The Ef for different metals was in the order of Cu> Zn > Ni > Pb > Cd > Cr > Fe. Pollution index (Pi) value of the sewage water irrigated soil ranged from 0.505 to 0.901 which indicated that the soil was not yet polluted.

APA, Harvard, Vancouver, ISO, and other styles

47

Hermawan, Bandi, Hasanudin Hasaanudin, Indra Agustian, and Bambang Gonggo Murcitro. "A Model to Predict Plant-available Water Content of Soils at Different Land Units in Bengkulu, Indonesia." TERRA : Journal of Land Restoration 3, no. 1 (June 19, 2020): 10–14. http://dx.doi.org/10.31186/terra.3.1.10-14.

Full text

Abstract:

Soil water availability to the plants is a very important physical property of soil that controls water and nutrient absorption by the plant. It is defined as the difference between the maximum amount of water the soil can hold and the minimum condition that the plant can no longer extract water from the soil. However, soil factors that control the plant available water content (PAWC) in the soil have not been fully understood. The present study aims to analyze the relations between particle-size distributions and organic carbon with the available water of the soil and to develop a model of predicting PAWC. Five soil profiles at different land units were described up to the depth of 100 cm. Ten undisturbed soil samples were taken using the stainless-made core sampler from 10 cm increments for the soil water holding capacity analysis. A similar number of disturbed samples were also provided from the same depths for soil texture and organic carbon analysis. Results showed that the variance in PAWC could be explained by sand and clay fractions (R2>0.35) but not by silt and organic carbon contents. Therefore, we were able to develop a model for the prediction of available water content in the soil from the sand and clay parameters. The model will help decision-makers be able to propose conservation and management strategies for PAWC in agricultural practices as well as for the soil moisture retention at civil works.

APA, Harvard, Vancouver, ISO, and other styles

48

Beck-Broichsitter, Steffen, Heiner Fleige, and Rainer Horn. "Effect of organic residues on soil properties of loamy topsoil of haplic Luvisol in Northern Germany." Die Bodenkultur: Journal of Land Management, Food and Environment 71, no. 1 (June 22, 2020): 31–39. http://dx.doi.org/10.2478/boku-2020-0004.

Full text

Abstract:

SummaryThe application of organic residues should ensure a sufficient air capacity (AC) and plant available water capacity (AWC) to improve the soil aeration and water supply for plant roots, whereas the air permeability (ka) primarily depends on the number of functional and, therefore, connected pores. The objective of the study was to investigate the effect of digestates derived from maize (Zea mays L.), sugar beet (Beta vulgaris L.), and wheat (Triticum aestivum L.) in ratios of 100%, 80%, and 20%, respectively; compost of shrub debris; and sewage sludge on AC, AWC, and ka values, including the pore continuity indices (c2, c3) of a loamy Ap horizon of a haplic Luvisol. The results indicate that AC values increase from 0.142 of up to 0.191 cm3 cm−3, but pore continuities and AWC values decrease from 0.143 down to 0.111 cm3 cm−3, except for wheat-containing digestate (20w80b), which shows an opposite trend. The application of organic residues can compensate low AC values but not the AWC values. The wheat-containing digestate should be preferred for improving the water-holding capacity and, therefore, the water supply for plant roots.

APA, Harvard, Vancouver, ISO, and other styles

49

Bhadha, Jehangir, Raju Khatiwada, Salvador Galindo, Nan Xu, and Jay Capasso. "Evidence of Soil Health Benefits of Flooded Rice Compared to Fallow Practice." Sustainable Agriculture Research 7, no. 4 (August 1, 2018): 31. http://dx.doi.org/10.5539/sar.v7n4p31.

Full text

Abstract:

Flooded rice (Oryza sativa L.) in south Florida is grown commercially in rotation with sugarcane and vegetables. From 2008 to 2018, rice production has doubled. During the spring-summer, nearly 200 km2 of fallow sugarcane land is available for rice production. In 2017, approximately 113 km2 of rice were planted in the region. The net value of growing rice as a rotation crop far exceeds its monetary return. This study evaluated soil health parameters before and after rice cultivation and compared them against two other common summer farming practices - fallow fields and flooded-fallow. The soil health parameters that were tested as part of this study included soil pH, bulk density, water holding capacity, cation exchange capacity, organic matter, active carbon and nutrient content. Results indicated an increase in soil pH, and a significant reduction in soil bulk density due to rice cultivation. Water holding capacity increased significantly under all flooded land use practices compared to fallow fields. Cation exchange capacity significantly increased when sugarcane fields were cultivated with rice and ratoon rice, nearly doubled from 58 to 101 cmolc kg-1. Small, yet significant 3% increase in organic matter was observed when sugarcane fields were cultivated with ratoon rice. Almost 16 g kg-1 of active C is being generated within fallow soils, whereas less than half that under flooded practices, limiting the amount of soil loss via oxidation. Based on the soil health index, rice cultivation and flooded-fallow improved overall soil quality compared to fallow lands.

APA, Harvard, Vancouver, ISO, and other styles

50

Xu, Nan, Jehangir H. Bhadha, Abul Rabbany, and Stewart Swanson. "Soil Health Assessment of Two Regenerative Farming Practices on Sandy Soils." Sustainable Agriculture Research 8, no. 4 (October 19, 2019): 61. http://dx.doi.org/10.5539/sar.v8n4p61.

Full text

Abstract:

The addition of organic amendments and cover cropping on sandy soils are regenerative farming practices that can potentially enhance soil health. South Florida mineral soils present low soil quality due to their sandy texture and low organic matter (OM) content. Few studies have focused on evaluating the effects of farm-based management regenerative practices in this region. The objective of this study was to evaluate changes in soil properties associated with two regenerative farming practices - horse bedding application in combination with cover cropping (cowpea, Vigna unguiculata), compared to the practice of cover cropping only for two years. The soil quality indicators that were tested included soil pH, bulk density, water holding capacity, cation exchange capacity, OM, active carbon, soil protein and major nutrients (N, P, K). Results indicated no significant changes in soil pH, but a significant reduction in soil bulk density and a significant increase in maximum water holding capacity for both practices. Cation exchange capacity and the amounts of active carbon increased significantly after 1.5-year of the farming practices. Horse bedding application with cover cropping showed a significant 4% increase in OM during a short period. A significant increase in plant-available P was also observed under these two practices. Based on this study, horse bedding application as an organic amendment in conjunction with cover cropping provides an enhanced soil health effect compared to just cover cropping. As local growers explore farming option to improve soil health particularly during the fallow period using regenerative farming practices on sandy soils, these results will assist in their decision making.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Available water holding capacity'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles