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Journal articles on the topic 'Wilting point permanent'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Obi, Chinedu Innocent, Jude C. Obi, and Emmanuel U. Onweremadu. "Modeling of Permanent Wilting from Particle Size Fractions of Coastal Plain Sands Soils in Southeastern Nigeria." ISRN Soil Science 2012 (July 31, 2012): 1–5. http://dx.doi.org/10.5402/2012/198303.

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Permanent wilting points in soils have been found to correlate significantly with particle size fractions. This study was conducted to establish functional relationship between soil particle size fractions and permanent wilting point of soils of coastal plain sands in southeastern Nigeria. A total of 102 surface samples were collected from three different dominantly Ultisols toposequences (i.e., 34 samples from each). Permanent wilting point experiment was carried out in pots with the 102 samples in the greenhouse while the particle size analysis was carried out in the laboratory. There was si

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2

Laktionova, T., and S. Nakisko. "Particle Size Distribution as a Basic Characteristic for Pedotransfer Prediction of Permanent Wilting Point." Agricultural Science and Practice 1, no. 1 (2014): 13–19. http://dx.doi.org/10.15407/agrisp1.01.013.

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The permanent wilting point (PWP) belongs to the basic soil hydrological constants and plays the important role in an estimation of the natural or irrigating moisture availability to agricultural plants. Direct measurement of hydrological parameters demands signifi cant amount of time, efforts and equipment. Pedotransfer functions (PTF) can provide an alternative way to an estimation of these parameters indirectly, by calculation, using accessible parameters of the basic soil properties in soil databases. Aim. To work out new PTF for an estimation of permanent wilting point in the chernozem so

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3

Dayana, Ingri, Bandi Hermawan, Yudhi Harini Bertham, and Dwi Wahyuni Ganefianti. "Effects of Arbuscular Mycorrhiza Fungi and Coffee Pulp Compost in Improving Soil Water Uptake by Chilli Around the Permanent Wilting Point Conditions." TERRA : Journal of Land Restoration 3, no. 1 (2020): 23–26. http://dx.doi.org/10.31186/terra.3.1.23-26.

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Soil water availability to the plants is a range of water content between the field capacity and the permanent wilting point (PWP) conditions. The PWP is defined as the lower limit of soil water content that the plant can extract water from the soil as indicated by the symptoms of wilting plants. This is because plant roots are unable to penetrate the soil micropores that contain the water. The study aims to analyze the effects of arbuscular mycorrhizal fungi (AMF) and compost in enhancing soil water absorption by the plant when the water content is close to the permanent wilting point. Four d

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4

Bussiéres, P., J. Hostalery, and A. Battilani. "SIMPLE DEVICE FOR ESTIMATING SOIL WATER CONTENT AT PERMANENT WILTING POINT." Acta Horticulturae, no. 613 (September 2003): 163–68. http://dx.doi.org/10.17660/actahortic.2003.613.21.

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5

Bechtold, Michel, Ullrich Dettmann, Lena Wöhl, Wolfgang Durner, Arndt Piayda, and Bärbel Tiemeyer. "Comparing Methods for Measuring Water Retention of Peat Near Permanent Wilting Point." Soil Science Society of America Journal 82, no. 3 (2018): 601–5. http://dx.doi.org/10.2136/sssaj2017.10.0372.

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6

Filgueiras, Roberto, Vinicius Mendes Rodrigues de Oliveira, Fernando França da Cunha, Everardo Chartuni Mantovani, and Epitácio Jose de Souza. "MODELOS DE CURVA DE RETENÇÃO DE ÁGUA NO SOLO." IRRIGA 1, no. 1 (2018): 115. http://dx.doi.org/10.15809/irriga.2016v1n1p115-120.

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MODELOS DE CURVA DE RETENÇÃO DE ÁGUA NO SOLO ROBERTO FILGUEIRAS¹; VINICIUS MENDES RODRIGUES DE OLIVEIRA²; FERNANDO FRANÇA DA CUNHA³; EVERARDO CHARTUNI MANTOVANI³ E EPITÁCIO JOSE DE SOUZA4 1 Doutorando em Engenharia Agrícola, Universidade Federal de Viçosa. Viçosa, MG. Email: roberto.f.filgueiras@ufv.br² Doutorando em Engenharia Agrícola, Universidade Federal de Viçosa. Viçosa, MG³ Prof. Dr. Departamento de Engenharia Agrícola, Universidade Federal de Viçosa. Viçosa, MG4 Doutorando em Agronomia (Ciência do Solo), UNESP. Ilha Solteira, SP. 1 RESUMO O objetivo deste trabalho foi comparar a umidad

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7

., Bilal Cemek, Ramazan Meral ., Mehmet Apan ., and Hasan Merdun . "Pedotransfer Functions for the Estimation of the Field Capacity and Permanent Wilting Point." Pakistan Journal of Biological Sciences 7, no. 4 (2004): 535–41. http://dx.doi.org/10.3923/pjbs.2004.535.541.

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8

Chen, Chong, Hu Zhou, Jianying Shang, Kelin Hu, and Tusheng Ren. "Estimation of soil water content at permanent wilting point using hygroscopic water content." European Journal of Soil Science 71, no. 3 (2019): 392–98. http://dx.doi.org/10.1111/ejss.12887.

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9

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 (2014): 464–75. http://dx.doi.org/10.1590/s0100-06832014000200011.

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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

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10

Hohenegger, Cathy, and Bjorn Stevens. "The role of the permanent wilting point in controlling the spatial distribution of precipitation." Proceedings of the National Academy of Sciences 115, no. 22 (2018): 5692–97. http://dx.doi.org/10.1073/pnas.1718842115.

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Convection-permitting simulations on an idealized land planet are performed to understand whether soil moisture acts to support or impede the organization of convection. Initially, shallow circulations driven by differential radiative cooling induce a self-aggregation of the convection into a single band, as has become familiar from simulations over idealized sea surfaces. With time, however, the drying of the nonprecipitating region induces a reversal of the shallow circulation, drawing the flow at low levels from the precipitating to the nonprecipitating region. This causes the precipitating

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11

Ghanbarian-Alavijeh, B., and H. Millán. "The relationship between surface fractal dimension and soil water content at permanent wilting point." Geoderma 151, no. 3-4 (2009): 224–32. http://dx.doi.org/10.1016/j.geoderma.2009.04.014.

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12

Vopravil, Jan, Pavel Formánek, and Tomáš Khel. "Comparison of the physical properties of soils belonging to different reference soil groups." Soil and Water Research 16, No. 1 (2020): 29–38. http://dx.doi.org/10.17221/31/2020-swr.

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Soil properties can be influenced by long-term agricultural management practices as described in pedological literature. In this study, selected physical properties (particle density and bulk density, total porosity, maximum capillary water capacity, minimum air capacity, field capacity, permanent wilting point and available water capacity) of topsoils from different reference soil groups (Cambisols, Luvisols, Fluvisols, Chernozems and Phaeozems, Leptosols, Stagnosols and Gleysols) were sampled and analysed in the years 2016–2017. The topsoil samples were taken from points of so-called S (spec

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13

Czyż, E. A., and A. R. Dexter. "Influence of soil type on the wilting of plants." International Agrophysics 27, no. 4 (2013): 385–90. http://dx.doi.org/10.2478/intag-2013-0008.

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Abstract It has been shown that the water remaining in soil when plants wilt due to soil limitations and the residual water content as observed when soils are de-watered in pressure cell apparatus are essentially the same. Both are produced by immiscible displacement of water by air, and this leads to the water remaining in soil not being in thermodynamic equilibrium. Water removal by immiscible displacement ceases when hydraulic cut-off is reached. The point of hydraulic cut-off may be calculated by fitting waterretention data to equations for both the non-equilibrium case and the equilibrium

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14

Farrick, Kegan K., Mark N. Wuddivira, and Osei Martin. "Estimation of soil texture from permanent wilting point measured with a chilled-mirror dewpoint technique." Journal of Plant Nutrition and Soil Science 182, no. 1 (2018): 119–25. http://dx.doi.org/10.1002/jpln.201700573.

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15

Wiecheteck, Lucia H., Neyde F. B. Giarola, Renato P. de Lima, Cassio A. Tormena, Lorena C. Torres, and Ariane L. de Paula. "Comparing the classical permanent wilting point concept of soil (−15,000 hPa) to biological wilting of wheat and barley plants under contrasting soil textures." Agricultural Water Management 230 (March 2020): 105965. http://dx.doi.org/10.1016/j.agwat.2019.105965.

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16

Öztekin, Tekin. "Short-Term Effects of Land Leveling on Irrigation-Related Some Soil Properties in a Clay Loam Soil." Scientific World Journal 2013 (2013): 1–16. http://dx.doi.org/10.1155/2013/187490.

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There are few studies conducted on the short-term effects of land leveling on soil water holding capacity. The objectives of this study were to analyze the short-term effects of land leveling on the magnitudes, variances, spatial variability, and distributions of surface (0–20 cm) and subsurface (20–40 cm) soil properties of bulk density, field capacity, permanent wilting point, water holding capacity and particle size fractions. The study was conducted in a 1.2 ha field with clay loam soil located on the low terraces of Yesilirmak River, Tokat, Turkey. According to the pairedt-test results, w

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17

Mashayekhi, Parisa, Shoja Ghorbani-Dashtaki, Mohammad Reza Mosaddeghi, Hossein Shirani, and Ali Reza Mohammadi Nodoushan. "Different scenarios for inverse estimation of soil hydraulic parameters from double-ring infiltrometer data using HYDRUS-2D/3D." International Agrophysics 30, no. 2 (2016): 203–10. http://dx.doi.org/10.1515/intag-2015-0087.

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AbstractIn this study, HYDRUS-2D/3D was used to simulate ponded infiltration through double-ring infiltrometers into a hypothetical loamy soil profile. Twelve scenarios of inverse modelling (divided into three groups) were considered for estimation of Mualem-van Genuchten hydraulic parameters. In the first group, simulation was carried out solely using cumulative infiltration data. In the second group, cumulative infiltration data plus water content ath= −330 cm (field capacity) were used as inputs. In the third group, cumulative infiltration data plus water contents ath= −330 cm (field capaci

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18

Keshavarzi, Ali, Fereydoon Sarmadian, Ali Asghar Zolfaghari, and Paria Pezeshki. "Estimating Water Content at Field Capacity and Permanent Wilting Point Using Non-parametric K-NN Algorithm." International Journal of Agricultural Research 7, no. 3 (2012): 166–68. http://dx.doi.org/10.3923/ijar.2012.166.168.

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19

Yao, Ning, Yi Li, Fang Xu, et al. "Permanent wilting point plays an important role in simulating winter wheat growth under water deficit conditions." Agricultural Water Management 229 (February 2020): 105954. http://dx.doi.org/10.1016/j.agwat.2019.105954.

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20

Jin, Xinxin, Shuai Wang, Na Yu, et al. "Spatial predictions of the permanent wilting point in arid and semi-arid regions of Northeast China." Journal of Hydrology 564 (September 2018): 367–75. http://dx.doi.org/10.1016/j.jhydrol.2018.07.038.

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21

Ghorbani, Mohammad Ali, Shahaboddin Shamshirband, Davoud Zare Haghi, Atefe Azani, Hossein Bonakdari, and Isa Ebtehaj. "Application of firefly algorithm-based support vector machines for prediction of field capacity and permanent wilting point." Soil and Tillage Research 172 (September 2017): 32–38. http://dx.doi.org/10.1016/j.still.2017.04.009.

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22

Assi, Amjad T., John Blake, Rabi H. Mohtar, and Erik Braudeau. "Soil aggregates structure-based approach for quantifying the field capacity, permanent wilting point and available water capacity." Irrigation Science 37, no. 4 (2019): 511–22. http://dx.doi.org/10.1007/s00271-019-00630-w.

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23

Rab, M. A., S. Chandra, P. D. Fisher, et al. "Modelling and prediction of soil water contents at field capacity and permanent wilting point of dryland cropping soils." Soil Research 49, no. 5 (2011): 389. http://dx.doi.org/10.1071/sr10160.

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Field capacity (FC) and permanent wilting point (PWP) are two critical input parameters required in various biophysical models. There are limited published data on FC and PWP of dryland cropping soils across north-western Victoria. Direct measurements of FC and PWP are time-consuming and expensive. Reliable prediction of FC and PWP from their functional relationships with routinely measured soil properties can help to circumvent these constraints. This study provided measured data on FC using undisturbed samples and PWP as functions of geomorphological unit, soil type, and soil texture class f

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24

Ostovari, Yaser, Kamran Asgari, and Wim Cornelis. "Performance Evaluation of Pedotransfer Functions to Predict Field Capacity and Permanent Wilting Point Using UNSODA and HYPRES Datasets." Arid Land Research and Management 29, no. 4 (2015): 383–98. http://dx.doi.org/10.1080/15324982.2015.1029649.

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25

Mohanty, M., Nishant K. Sinha, D. K. Painuli, et al. "Modelling Soil Water Contents at Field Capacity and Permanent Wilting Point Using Artificial Neural Network for Indian Soils." National Academy Science Letters 38, no. 5 (2015): 373–77. http://dx.doi.org/10.1007/s40009-015-0358-4.

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26

Kay, B. D., A. P. da Silva, and J. A. Baldock. "Sensitivity of soil structure to changes in organic carbon content: Predictions using pedotransfer functions." Canadian Journal of Soil Science 77, no. 4 (1997): 655–67. http://dx.doi.org/10.4141/s96-094.

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Pedotransfer functions (PTFs) were used to assess the sensitivity of the structural characteristics of coarse- and medium-textured calcareous illitic soils at different levels of relative compaction (RC) to changes in the organic carbon (OC) content. The analyses predicted that an increase in the OC content of 0.01 kg kg−1 would:• increase the available water content from 0.02 to 0.04 m3 m−3 with the largest increases occurring in coarser-textured soils and not being strongly influenced by RC;• decrease the air-filled porosity at field capacity from 0.01 to 0.04 m3 m−3 with the largest decreas

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27

Cruz, D. R., L. F. S. Leandro, D. A. Mayfield, Y. Meng, and G. P. Munkvold. "Effects of Soil Conditions on Root Rot of Soybean Caused by Fusarium graminearum." Phytopathology® 110, no. 10 (2020): 1693–703. http://dx.doi.org/10.1094/phyto-02-20-0052-r.

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Fusarium graminearum is an important soybean pathogen that causes seedling disease, root rot, and pre- and postemergence damping-off. However, effects of soil conditions on the disease are not well understood. The objective of this greenhouse study was to determine the impacts of soil texture, pH, and soil moisture on seedling root rot symptoms and detrimental effects on seedling development caused by F. graminearum. F. graminearum-infested millet was added (10%, vol/vol) to soil with four different textures (sand, loamy sand, sandy loam, and loam). Soil moisture was maintained at saturation,

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28

Pollacco, J. A. P. "A generally applicable pedotransfer function that estimates field capacity and permanent wilting point from soil texture and bulk density." Canadian Journal of Soil Science 88, no. 5 (2008): 761–74. http://dx.doi.org/10.4141/cjss07120.

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Hydrological models require the determination of fitting parameters that are tedious and time consuming to acquire. A rapid alternative method of estimating the fitting parameters is to use pedotransfer functions. This paper proposes a reliable method to estimate soil moisture at -33 and -1500 kPa from soil texture and bulk density. This method reduces the saturated moisture content by multiplying it with two non-linear functions depending on sand and clay contents. The novel pedotransfer function has no restrictions on the range of the texture predictors and gives reasonable predictions for s

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Tunçay, Tülay, Oğuz Başkan, Ilhami Bayramın, Orhan Dengız, and Şeref Kılıç. "Geostatistical approach as a tool for estimation of field capacity and permanent wilting point in semi-arid terrestrial ecosystem." Archives of Agronomy and Soil Science 64, no. 9 (2018): 1240–53. http://dx.doi.org/10.1080/03650340.2017.1422081.

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30

Silva, Antonio Carlos da, Jeane Cruz Portela, Rafael Oliveira Batista, et al. "Soil Water Retention in the Semiarid Region of Brazil." Journal of Agricultural Science 10, no. 9 (2018): 105. http://dx.doi.org/10.5539/jas.v10n9p105.

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From the physics point of view, soil structure is a dynamic attribute that is affected by genetic conditions and anthropogenic changes and requires an integrated approach. Soil water retention curve is one of the main tools used in soil structure evaluations. The objective of this work was to evaluate the structural and chemical attributes of soils of different classes and agroecosystems in the Terra de Esperança Settlement (Governador Dix Sept Rosado, Rio Grande do Norte, Brazil) to distinguish these environments. Disturbed and undisturbed soil samples were collected in horizons of 10 soil pr

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31

Daniells, IG. "Degradation and restoration of soil structure in a cracking grey clay used for cotton production." Soil Research 27, no. 2 (1989): 455. http://dx.doi.org/10.1071/sr9890455.

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A field experiment involving irrigated cotton investigated the effect of tillage on a self-mulching cracking grey clay at three different soil water contents: dry (close to permanent wilting point to over 1 m depth), moist (subsoil close to the lower plastic limit) and wet (just trafficable). These treatments had been repeated over three years prior to the plant and soil measurements reported in this paper. Compared with tillage of dry soil, tillage of moist or wet soil depressed lint yield by 35% (P<0.001). Shrinkage curves of resin-coated, intact soil clods showed lower clod bulk density

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32

Qiao, Jiangbo, Yuanjun Zhu, Xiaoxu Jia, Laiming Huang, and Ming’an Shao. "Pedotransfer functions for estimating the field capacity and permanent wilting point in the critical zone of the Loess Plateau, China." Journal of Soils and Sediments 19, no. 1 (2018): 140–47. http://dx.doi.org/10.1007/s11368-018-2036-x.

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33

BUAKUM, B., V. LIMPINUNTANA, N. VORASOOT, K. PANNANGPETCH, and R. W. BELL. "IS DEEP SOWING BENEFICIAL FOR DRY SEASON CROPPING WITHOUT IRRIGATION ON SANDY SOIL WITH SHALLOW WATER TABLE?" Experimental Agriculture 49, no. 3 (2013): 366–81. http://dx.doi.org/10.1017/s0014479713000161.

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SUMMARYDeep sowing (15 cm) on sands in the dry season is a practice used in post-rice sowing of legumes without irrigation, designed to increase moisture access for germination, growth and crops yield. However, with such deep sowing there can be a penalty for emergence and growth if there is abundant water stored in the upper soil profile during the growing season. Hence, there is a need to define the soil water regimes under which deep sowing is advantageous for different legumes. To investigate the adaptation of legume crop species to deep sowing, we studied their emergence, growth and yield

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34

Lo, Tsz Him, Derek M. Heeren, Luciano Mateos, et al. "Field Characterization of Field Capacity and Root Zone Available Water Capacity for Variable Rate Irrigation." Applied Engineering in Agriculture 33, no. 4 (2017): 559–72. http://dx.doi.org/10.13031/aea.11963.

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Abstract. Accurate spatial characterization of field capacity (FC) and root zone available water capacity (R) can enhance site-specific management practices—such as variable rate irrigation—to lower input costs, reduce contaminant leaching, and/or improve crop yield. Measuring the volumetric water content after wet soils drain following substantial precipitation can provide a field estimate of FC. The average FC (FCa) for the managed root zone was determined at thirty-two locations in a topographically variable field in south central Nebraska. The difference between FC and permanent wilting po

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35

Cerligione, Lisa J., Anthony E. Liberta, and Roger C. Anderson. "Effects of soil moisture and soil sterilization on vesicular–arbuscular mycorrhizal colonization and growth of little bluestem (Schizachyrium scoparium)." Canadian Journal of Botany 66, no. 4 (1988): 757–61. http://dx.doi.org/10.1139/b88-112.

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Nonmycorrhizal little-bluestem plants grown in sterile soil and mycorrhizal plants grown in unsterilized soil were experimentally subjected to varied soil moisture conditions that ranged from saturation for 12 h followed by drainage for 48 h to allowing soil to dry to permanent wilting point and returning it to field capacity 72 h later. Nonmycorrhizal plants produced significantly (p < 0.05) greater root and shoot biomass, had lower root/shoot ratios, and produced more flowering culms than mycorrhizal plants. However, mycorrhizal plants had significantly higher tissue concentrations of pho

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Taşan, Sevda, and Yusuf Demir. "Comparative Analysis of MLR, ANN, and ANFIS Models for Prediction of Field Capacity and Permanent Wilting Point for Bafra Plain Soils." Communications in Soil Science and Plant Analysis 51, no. 5 (2020): 604–21. http://dx.doi.org/10.1080/00103624.2020.1729374.

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37

Vaheddoost, Babak, Yiqing Guan, and Babak Mohammadi. "Application of hybrid ANN-whale optimization model in evaluation of the field capacity and the permanent wilting point of the soils." Environmental Science and Pollution Research 27, no. 12 (2020): 13131–41. http://dx.doi.org/10.1007/s11356-020-07868-4.

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38

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.

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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

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39

Nguyen, T. T., S. Fuentes, and P. Marschner. " Effects of compost on water availability and gas exchange in tomato during drought and recovery." Plant, Soil and Environment 58, No. 11 (2012): 495–502. http://dx.doi.org/10.17221/403/2012-pse.

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Compost can increase soil water availability and nutrient uptake by plants, but it is not clear whether it can also improve the ability of plants to recover after drought stress. Tomato plants (Lycopersicon esculentum L.) were grown in sandy soil without compost or with compost either incorporated or mulched. There were two water treatments: (i) plants grown under sufficient water supply throughout the experiment and (ii) plants grown with sufficient water supply until day 33 after which water was withheld until stomatal conductance was close to zero. Compost addition increased water content a

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40

Roy, Debjit, Xinhua Jia, Xuefeng Chu, and Jennifer M. Jacobs. "Hydraulic Conductivity Measurement for Three Frozen and Unfrozen Soils in the Red River of the North Basin." Transactions of the ASABE 64, no. 3 (2021): 761–70. http://dx.doi.org/10.13031/trans.14224.

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HighlightsHydraulic conductivity was measured in frozen and unfrozen soil conditions by a minidisk infiltrometer.In the RRB, frozen sandy loam and silty clay soils had the highest and lowest hydraulic conductivity, respectively.Three simple equations were developed for the three soils to predict frozen soil hydraulic conductivity.Freeze-thaw cycles reduced soil hydraulic conductivity.Abstract. Hydraulic conductivity (k) is a key parameter in describing water movement through a soil profile. In the Red River of the North basin (RRB), the hydraulic properties of frozen soils vary with temperatur

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41

Irmak, Suat, Vasudha Sharma, Ali T. Mohammed, and Koffi Djaman. "Impacts of Cover Crops on Soil Physical Properties: Field Capacity, Permanent Wilting Point, Soil-Water Holding Capacity, Bulk Density, Hydraulic Conductivity, and Infiltration." Transactions of the ASABE 61, no. 4 (2018): 1307–21. http://dx.doi.org/10.13031/trans.12700.

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42

Li, Xiangdong, Ming’an Shao, and Chunlei Zhao. "Estimating the field capacity and permanent wilting point at the regional scale for the Hexi Corridor in China using a state-space modeling approach." Journal of Soils and Sediments 19, no. 11 (2019): 3805–16. http://dx.doi.org/10.1007/s11368-019-02314-6.

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43

Kozłowski, Michał, and Jolanta Komisarek. "Analysis of the suitability of Polish soil texture classification for estimating soil water retention and hydraulic properties." Soil Science Annual 68, no. 4 (2017): 197–204. http://dx.doi.org/10.1515/ssa-2017-0025.

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Abstract The objective of this study was to examine whether the Polish soil textural classification is useful for evaluation of soil water retention and hydraulic properties and, furthermore, for determining which textural classes are characterized by the highest diversity of soil water retention and hydraulic properties. The texture triangle was divided into a 1% grid of particle-size classes resulting in 5151 different data points. For each data point, soil water retention parameters and saturated hydraulic conductivity were obtained using the ROSETTA program. The silt classes showed the hig

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44

Blodgett, Allyson M., David J. Beattie, and John W. White. "Growth and Shelf Life of Impatiens in Media Amended with Hydrophilic Polymer and Wetting Agent." HortTechnology 5, no. 1 (1995): 38–40. http://dx.doi.org/10.21273/horttech.5.1.38.

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Impatiens wallerana `Accent Red' were grown in a peat : perlite : vermiculite (PPV) or bark : peat : perlite (BPP) medium amended with SuperSorb-C (SS) or Soil Moist (SM) hydrophilic polymer and/or AquaGro-G (AG) wetting agent. In PPV or BPP, neither SS nor SM significantly increased shoot dry weight. In PPV, quality ratings were higher for plants grown in nonamended or SS- or SM- amended medium than for plants in AG-amended medium. In BPP, quality ratings were highest for plants grown in nonamended, AG-, or SM + AG-treated medium. Number of days from final irrigation to permanent wilting poin

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Meerow, Alan W., and Timothy K. Broschat. "Growth of Hibiscus in Media Amended with a Ceramic Diatomaceous Earth Granule and Treated with a Kelp Extract." HortTechnology 6, no. 1 (1996): 70–73. http://dx.doi.org/10.21273/horttech.6.1.70.

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Growth of Hibiscus rosasinensis L. `President' under daily irrigation and decreasing irrigation frequency was compared in a 5 pine bark : 4 sedge peat : 1 sand (by volume) medium amended further with 0%, 10%, 20%, or 30% (by volume) Axis, a kiln-fired diatomaceous earth granule. Half of each substrate treatment also was drenched three times with Agroroots, a kelp extract. Shoot and root dry weights were compared after 4.5 months of growth. Container media amended with Axis at 10% volume yielded hibiscus plants with higher shoot dry weights than nonamended media. Root-zone drenches with Agroroo

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Chan, KY. "Effects of flooding and subsequent drying on consolidation of beds of aggregates of a gray clay from Narrabri, NSW." Soil Research 25, no. 4 (1987): 567. http://dx.doi.org/10.1071/sr9870567.

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Changes in porosity of beds of aggragates of a grey clay, from Narrabri, NSW, on drying after flooding were studied in a laboratory experiment. For both surface soil (0-0.2m) and subsoil (0.8-1.0m) as a result of quick wetting, air-filled porosities sufficiently low (<0.1m3m-3) to be adversely affecting plant growth were recorded in the aggregate beds for much of the plant-available moisture range. Resultsindicated that, for the subsoil, the structural shrinkage phase was completely absent. Normal shrinkage prevailed and air-filled prosity remained at<0.1m3m-3 until the commencement of t

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PATIL, N. G., G. S. RAJPUT, R. K. NEMA, and R. B. SINGH. "Predicting hydraulic properties of seasonally impounded soils." Journal of Agricultural Science 148, no. 2 (2009): 159–70. http://dx.doi.org/10.1017/s002185960999030x.

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SUMMARYAgricultural crop management decisions often require data on hydraulic properties of soils. Little information is available on hydraulic properties of clay soils that are impounded by rainwater (known as ‘Haveli’ lands) every year during the monsoon season in large tracts of Madhya Pradesh in India. Estimating hydraulic properties using global pedotransfer functions (PTFs) is one possible way to collect such information. Rules in the widely used global PTF Rosetta were executed to obtain estimates of two important hydraulic properties, namely soil water retention characteristics (SWRC)

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Vasques, Gustavo Mattos, Maurício Rizzato Coelho, Ricardo Oliveira Dart, Ronaldo Pereira Oliveira, and Wenceslau Geraldes Teixeira. "Mapping soil carbon, particle-size fractions, and water retention in tropical dry forest in Brazil." Pesquisa Agropecuária Brasileira 51, no. 9 (2016): 1371–85. http://dx.doi.org/10.1590/s0100-204x2016000900036.

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Abstract The objective of this work was to compare ordinary kriging with regression kriging to map soil properties at different depths in a tropical dry forest area in Brazil. The 11 soil properties evaluated were: organic carbon content and stock; bulk density; clay, sand, and silt contents; cation exchange capacity; pH; water retention at field capacity and at permanent wilting point; and available water. Samples were taken from 327 sites at 0.0-0.10, 0.10-0.20, and 0.20-0.40-m depths, in a tropical dry forest area of 102 km2. Stepwise linear regression models for particle-size fractions and

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Schellenberg, M. P., J. Waddington, and J. R. King. "Direct seeding of alfalfa into established Russian wildrye pasture in southwest Saskatchewan." Canadian Journal of Plant Science 74, no. 3 (1994): 539–42. http://dx.doi.org/10.4141/cjps94-096.

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Experiments were started in each of the three years 1989–1991 to examine the effect of severing near-surface roots of established Russian wildrye (Psathyrostachys juncea (Fisch.) Nevskii) on the establishment of two alfalfa cultivars (Medicago sativa L.) in semiarid Saskatchewan. In 2 of 3 yr, up to 75% more seedlings were established of the cultivar Rangelander, a creeping-rooted alfalfa of mixed ssp. sativa (L.) Lesins & Lesins and ssp. falcata (L.) Arcangeli parentage, than of SCMf3713, a tap-rooted ssp. falcata. Severing Russian wildrye roots significantly improved alfalfa establishmen

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Layne, Richard E. C., Chin S. Tan, and David M. Hunter. "Cultivar, Ground-cover, and Irrigation Treatments and Their Interactions Affect Long-term Performance of Peach Trees." Journal of the American Society for Horticultural Science 119, no. 1 (1994): 12–19. http://dx.doi.org/10.21273/jashs.119.1.12.

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Three cultivars (`Garnet Beauty', `Harbrite', `Canadian Harmony'), two ground covers (temporary cover vs. permanent sod), and no irrigation vs. season-long trickle irrigation were studied in a high-density (633 trees/ha) peach [Prunus persica (L.) Batsch] orchard established on Fox sand in 1980. From 1985 to 1989, soil water content in the top 130 cm was similar in nonirrigated and trickle-irrigated plots except during the growing season (May to September). Total soil water was lowest in nonirrigated plots that had permanent sod strips in the row middles and fell below the-permanent wilting po

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