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Journal articles on the topic 'Soilless media'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Webber III, Charles L., Paul M. White Jr, Mengmeng Gu, Douglas J. Spaunhorst, Isabel M. Lima, and Eric C. Petrie. "Sugarcane and Pine Biochar as Amendments for Greenhouse Growing Media for the Production of Bean (Phaseolus vulgaris L.) Seedlings." Journal of Agricultural Science 10, no. 4 (2018): 58. http://dx.doi.org/10.5539/jas.v10n4p58.

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Louisiana sugarcane farmers in 2016 harvested 11.7 million Mg of millable sugarcane from 163,000 ha, producing 1.47 million Mg of raw sugar and an estimated 3.5 million Mg of bagasse. Even though Louisiana sugar mills use 80% to 90% of the bagasse for fuel production, another 350,000 to 700,000 Mg of bagasse accumulates each year. The conversion of the excess bagasse into biochar is one solution to reduce the excess supply. Research was conducted to determine the impact of sugarcane biochar as an amendment to soilless planting media for the production of green bean (Phaseolus vulgaris L.) seed

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2

Elliott, George C. "WATER RETENTION IN SOILLESS POTTING MEDIA." HortScience 25, no. 9 (1990): 1099G—1099. http://dx.doi.org/10.21273/hortsci.25.9.1099.

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Water retention was measured in soilless potting media irrigated by capillary mat, flood and drain, drip or overhead sprinkler. Media were amended with wetting agent or hydrophilic polymeric gel. Pots 12 cm high with a volume of 465 cm3 were loose-filled to the top with media. Potted media were wetted overhead with 120 ml water, then pots were randomly assigned to irrigation treatments. Capillary mat irrigation was continuous; other irrigation treatments were applied daily. Water retention was measured by weighing. Irrigation was continued until no further retention was measured. Water retenti

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Elliott, George C. "WATER RETENTION IN SOILLESS POTTING MEDIA." HortScience 25, no. 9 (1990): 1099g—1099. http://dx.doi.org/10.21273/hortsci.25.9.1099g.

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Water retention was measured in soilless potting media irrigated by capillary mat, flood and drain, drip or overhead sprinkler. Media were amended with wetting agent or hydrophilic polymeric gel. Pots 12 cm high with a volume of 465 cm3 were loose-filled to the top with media. Potted media were wetted overhead with 120 ml water, then pots were randomly assigned to irrigation treatments. Capillary mat irrigation was continuous; other irrigation treatments were applied daily. Water retention was measured by weighing. Irrigation was continued until no further retention was measured. Water retenti

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4

Sabatino, Leo. "Increasing Sustainability of Growing Media Constituents and Stand-Alone Substrates in Soilless Culture Systems—An Editorial." Agronomy 10, no. 9 (2020): 1384. http://dx.doi.org/10.3390/agronomy10091384.

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Peat-free growing media constituents and stand-alone substrates are the basis for the economic and ecological efficiency of the soilless culture system. Nevertheless, divergence between the model and practice still exists, coming from large gaps in the knowledge of alternative organic materials and of their effects on crop performance. A more detailed understanding of these topics is necessary to increase the soilless culture management capacity. In this respect, this critical review collects research outcomes concerning the sustainability of soilless culture and growing media constituents and

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5

Lin, Yuan-ling P., E. Jay Holocomb, and Jonathan P. Lynch. "490 PB 140 MARIGOLD GROWTH IN SOILLESS MEDIA AMENDED WITH PHOSPHORUS-CHARGED ALUMINA." HortScience 29, no. 5 (1994): 501e—501. http://dx.doi.org/10.21273/hortsci.29.5.501e.

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Soilless growing media are used extensively in the greenhouse, especially for the potted plant production. Unlike soil having a phosphorus (P)-fixing ability, soilless media allows greater P leaching from the media. Leaching of excess P results in inefficient fertilizer utilization and effluent pollution. In hydroponic and sand-culture systems, alumina adsorbed with P (P-alumina) has been developed as a P source to maintain buffered P concentrations in nutrient solutions. This P-alumina has not been used with soilless media; however, it may have a potential of serving as a P source for plant g

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6

Rogers, Mary A. "Organic Vegetable Crop Production in Controlled Environments Using Soilless Media." HortTechnology 27, no. 2 (2017): 166–70. http://dx.doi.org/10.21273/horttech03352-16.

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Organic vegetables produced in greenhouses and other controlled environments may fill a unique market niche as consumers demand local, high vegetables year round. However, limited technical information supports these production systems and more research is needed to provide recommendations for appropriate substrate mixes and nutrient management. Compost can be used as a substitute for peat-based media, and research results vary widely based on feedstock, compost method, and proportion used in mixes. Most studies consider compost in terms of peat-substitute or replacement and not as a source of

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7

Elliott, George C. "489 PB 137 LIME REACTION AND pH BUFFERING IN SOILLESS MEDIA." HortScience 29, no. 5 (1994): 501d—501. http://dx.doi.org/10.21273/hortsci.29.5.501d.

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Addition of lime to increase pH is generally essential for soilless media based on acidic organic materials. Media pH may decrease over time as the result of addition of acidic fertilizers. The objectives of this research were: to characterize reactions of conventional or finely ground lime in soilless media; to compare resistance to acidification in soilless media amended with conventional or finely ground lime; and to evaluate, for media containing rockwool, an equation to predict H+ activity (HA) of binary mixtures from HA of components. Various soilless media were amended with each type of

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8

Elliott, G. C., R. J. McAvoy, and M. Abbot. "Comparison of Spurway and saturated media extracts of soilless media." Communications in Soil Science and Plant Analysis 25, no. 9-10 (1994): 1255–76. http://dx.doi.org/10.1080/00103629409369113.

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9

Compton, Michael, and Timothy Zauche. "Potential of Anaerobic Digestion-derived Biosolids as an Organic Addendum in Horticultural Growing Media." HortScience 41, no. 4 (2006): 970D—970. http://dx.doi.org/10.21273/hortsci.41.4.970d.

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Soilless horticultural growing media are composed of organic matter, coarse aggregates, nutrients, and a wetting agent. Sphagnum peat has been the standard organic addendum to soilles growing media. However, recent shortages, escalating costs, and its acidity make sphagnum peat a sometimes less-than-desirable material. Alternatives such as composted bark dust, coconut coir, composted manure, and crop by-products have been proposed as substitutes for sphagnum peat, but none are a suitable general alternative. Anaerobic digestion-derived biosolids (ADB) has the potential to become a complete or

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10

Liu, Zong, Julie Howe, Xiao Wang, Xiao Liang, and Troy Runge. "Use of Dry Dairy Manure Pellets as Nutrient Source for Tomato (Solanum lycopersicum var. cerasiforme) Growth in Soilless Media." Sustainability 11, no. 3 (2019): 811. http://dx.doi.org/10.3390/su11030811.

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A sustainable dairy manure amendment for soilless crop growth systems was evaluated for its ability to provide nutrients and serve as a major component of the growing media. After manure liquid/solid separation, the solids stream containing organic N and P was pelletized and used as a nutrient source for cherry tomato (Solanum lycopersicum var. cerasiforme) culture in soilless media. The pellets are low in moisture, odor, and pathogens, and they can be hauled at lower cost over longer distances and more easily stored than raw or composted manure. Manure pellet additions to soilless media were

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11

Gruda, Nazim. "Increasing Sustainability of Growing Media Constituents and Stand-Alone Substrates in Soilless Culture Systems." Agronomy 9, no. 6 (2019): 298. http://dx.doi.org/10.3390/agronomy9060298.

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Decreasing arable land, rising urbanization, water scarcity, and climate change exert pressure on agricultural producers. Moving from soil to soilless culture systems can improve water use efficiency, especially in closed-loop systems with a recirculating water/nutrient solution that recaptures the drain water for reuse. However, the question of alternative materials to peat and rockwool, as horticultural substrates, has become increasingly important, due to the despoiling of ecologically important peat bog areas and a pervasive waste problem. In this paper, we provide a comprehensive critical

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12

Suvo, TP, H. Biswas, MH Jewel, MS Islam, and MSI Khan. "Impact of substrate on soilless tomato cultivation." International Journal of Agricultural Research, Innovation and Technology 6, no. 2 (2017): 82–86. http://dx.doi.org/10.3329/ijarit.v6i2.31710.

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An experiment was carried out to determine the effect of four different media based hydroponics on plant growth, yield and nutritional values at Biochemistry laboratory of Patuakhali Science and Technology University (PSTU), Bangladesh during November 2014 to April 2015. Tomato plants were grown in closed soilless system where Hoagland solution as nutrient solution and jute fiber, cotton (jhut), coconut husk as substrate. Among four types of media, the media composed with Hoagland solution and jute fiber showed good impact on growth and nutritional values than the other three media (media of H

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13

Salisu, Monsuru Adekunle, Zulkefly Sulaiman, and Mohd Yusoff ABD Samad. "Growth and biomass yield of rubber seedlings grown on soilless and soil-based media." Bangladesh Journal of Botany 49, no. 2 (2020): 229–36. http://dx.doi.org/10.3329/bjb.v49i2.49296.

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The investigation assessed the performance of rubber seedlings on different soilless media and soilbased medium. The treatments consisted of three soilless media codded M1, M2, M3 and soil-based medium M4 as a control. The highest rates of seedling growth and biomass yield were recorded in the soilless medium with 10% burned rice husk (BRH), 30% peat moss and 15% vermiculite (coded as M1) with noticeable effect in root morphological traits, while the pH and EC were 6.5 and 2.3 μS/m, respectively. Nitrogen was apparent in the M1 2.59, M2 3.03, M3 2.78 while 1.82 in M4 was recorded in the soil-b

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14

Shi, Bing, and Wallace Pill. "KENAF AS A COMPONENT OF SOILLESS GROWTH MEDIA." HortScience 28, no. 4 (1993): 256C—256. http://dx.doi.org/10.21273/hortsci.28.4.256c.

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Kenaf (Hibiscus cannabinus L.), native to east Africa, is an annual herbaceous member of Malvaceae cultivated primarily for its bast fibers. One of many potential uses of kenaf is that of a growth medium component. Kenaf stems (xylem plus phloem) were ground and sieved to 2 to 5 mm diameter particles. The particles were combined at various volumetric percentages with other components (perlite, vermiculite, calcined clay) in 70% Sphagnum pest moss which received standard preplant fertilization. To avoid growth suppression, the kenaf must be enriched with nitrogen (soaked in NH4NO3 solution for

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15

Nemali*, Krishna, and Marc van Iersel. "Two New Moisture Sensors for Soilless Growing Media." HortScience 39, no. 4 (2004): 763A—763. http://dx.doi.org/10.21273/hortsci.39.4.763a.

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Monitoring moisture status of the growing medium is essential as growth and quality of greenhouse crops largely depend on the amount of available water. Recently, two new types of moisture sensors have been developed (ECH2 O, Decagon devices, Inc., Pullman, Wash.; Theta probe ML2X, Delta -T devices Ltd., Burwell, Cambridge, U.K.). We studied the performance of these sensors for measuring the volumetric water content (VWC) of a soilless growing medium. We also tested the sensitivity of these sensors to temperature and electrical conductivity (EC) of the growing medium. Our results indicate that

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16

Raviv, M. "Should we use soilless media in organic greenhouses?" Acta Horticulturae, no. 1164 (June 2017): 535–40. http://dx.doi.org/10.17660/actahortic.2017.1164.70.

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17

Sabahy, Amr, Adel Bhansawi, Samir Ali, and Zakaria El-Haddad. "PHYSICAL AND CHEMICAL PROPERTIES OF SOME SOILLESS MEDIA." Misr Journal of Agricultural Engineering 32, no. 1 (2015): 381–92. http://dx.doi.org/10.21608/mjae.2015.98740.

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18

Handreck, Kevin A. "Assessment of iron availability in soilless potting media." Communications in Soil Science and Plant Analysis 20, no. 13-14 (1989): 1297–320. http://dx.doi.org/10.1080/00103628909368152.

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19

Torres-Quezada, Emmanuel A., Bielinski M. Santos, Lincoln Zotarelli, and Danielle A. Treadwell. "Soilless Media and Containers for Bell Pepper Production." International Journal of Vegetable Science 21, no. 2 (2014): 177–87. http://dx.doi.org/10.1080/19315260.2013.859204.

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20

Lang, Harvey J., and George C. Elliott. "Enumeration and Inoculation of Nitrifying Bacteria in Soilless Potting Media." Journal of the American Society for Horticultural Science 122, no. 5 (1997): 709–14. http://dx.doi.org/10.21273/jashs.122.5.709.

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Autotrophic nitrifying organisms were enumerated in soilless potting media using the most probable number (MPN) technique. Populations of NH4+ and NO2- oxidizing organisms varied widely between two soilless media—Metro-Mix 220 and 350. Estimates for NH4+ oxidizing organisms ranged from 0.7 to 7.8 × 105 organisms/cm3, while NO2- oxidizers ranged from 1.3 to 9.5 × 105 organisms/cm3. Population numbers were similar to those typically reported in soils. There was a significant effect of medium type, NH4+ N : NO3- N fertilizer ratio, and planting on MPN counts of both groups of organisms, with sign

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21

Lee, Joon Woo, and Jung Eek Son. "Nondestructive and Continuous Fresh Weight Measurements of Bell Peppers Grown in Soilless Culture Systems." Agronomy 9, no. 10 (2019): 652. http://dx.doi.org/10.3390/agronomy9100652.

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Fresh weight is a direct index of crop growth. It is difficult to continuously measure the fresh weight of bell peppers grown in soilless cultures, however, due to the difficulty in identifying the moisture condition of crops and growing media. The objective of this study was to develop a continuous and nondestructive measuring system for the fresh weight of bell peppers grown in soilless cultures considering the moisture content of growing media. The system simultaneously measures the trellis string’s supported weight and gravitational weight using tensile load cells. The moisture weight of g

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22

Butler, Susan H., and Bradford Bearce. "PRODUCTION OF 'SAMANTHA' GREENHOUSE ROSES IN ROOT MEDIA AMENDED WITH COAL BOTTOM ASH AND COMPOSTED HARDWOOD BARK." HortScience 28, no. 4 (1993): 255E—255. http://dx.doi.org/10.21273/hortsci.28.4.255e.

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Rosa × hybrida 'Samantha' plants were planted in pots of three soilless and two soil-containing media. Soilless media consisted of coal bottom ash and composted hardwood bark in 1:1, 2:1, and 3:1 ratios. Soil-containing media were equal parts soil, peat, and coal bottom ash; and a control of equal parts soil, peat, and sand. Half the pots of each media were treated with a cover crop of Hordeum vulgare L. 'Barsoy' to simulate weathering and incorporate additional organic matter prior to planting the roses. Physical and chemical properties of all five original media were examined, and production

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23

Webber III, Charles L., Paul M. White, Eric C. Petrie, James W. Shrefler, and Merritt J. Taylor. "Sugarcane Bagasse Ash as a Seedling Growth Media Component." Journal of Agricultural Science 8, no. 1 (2015): 1. http://dx.doi.org/10.5539/jas.v8n1p1.

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Bagasse is the fibrous material remaining after removing the sucrose, water, and other impurities (filter mud) from the milable sugarcane. Louisiana sugarcane mills use a portion of the sugarcane bagasse for fuel producing over 20,411 mt of sugarcane bagasse ash (SBA) as a by-product. The purpose of this research was to investigate the use of SBA as an amendment to soilless planting media for the production of vegetable seedlings. The SBA was combined by volume with a commercial soilless growing media into 5 combinations (0%:100%, 25%:75%, 50%:50%, 75%:25%, and 100%:0%, SBA and growing media,

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24

Al-Mana, Fahed A., and Tarik M. El-Kiey. "PRODUCTION OF SOME FLOWERS IN HYDROPONICS AND SOILLESS MEDIA." HortScience 25, no. 9 (1990): 1171c—1171. http://dx.doi.org/10.21273/hortsci.25.9.1171c.

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Production of five commercial cut flowers in different culture media, namelyI nutrient film technique (NFT), soilless media (perlite and an equal mix of perlite and peatmoss), and soil mix (2 sand: 1 loam by volume), was investigated in controlled fiberglass-house. Two rose varieties (Rosa hybrida var. Baccara and Madina); carnation (Dianthus caryophyllus var. William Sim); Chrysanthemum morifolium var. Delta, and Dahlia hybrida var. variabilis were used. Plants were watered as they needed by the same nutrient solution used for NFT.Generally, growth and yield of Baccara and Madina roses, Chrys

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Roberts, Bruce R., Henry F. Decker, Kenneth J. Bagstad, and Kathleen A. Peterson. "Biosolid Residues as Soilless Media for Growing Wildflower Sod." HortTechnology 11, no. 2 (2001): 194–99. http://dx.doi.org/10.21273/horttech.11.2.194.

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Two biosolid-containing waste media [sewage sludge compost and incinerated biosolids (flume sand)] were tested individually, together, and in combination with a commercial growing medium for growing wildflower sod in greenhouse trials over a 3-year period. A medium composed of flume sand and Metromix (7:3 weight/weight) in 7.5 {XtimesX} 10.5 {XtimesX} 2-inch deep (19 {XtimesX} 27 {XtimesX} 5-cm) plastic trays seeded at 20 oz/1000ft2 (6.1 g·m-2) with cosmos (Cosmos bipinnatus), cornflower (Centaurea cyannis), plains coreopsis (Coreopsis tinctoria), white yarrow (Achillea millefolium) and purple

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26

Abou-Hadid, A. F., A. S. El-Beltagy, S. A. Gaafer, and S. M. Youssef. "SELECTED SOILLESS MEDIA FOR GREENHOUSE CROP SEEDLINGS : 1-TOMATO." Acta Horticulturae, no. 323 (February 1993): 315–22. http://dx.doi.org/10.17660/actahortic.1993.323.28.

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27

Handreck, Kevin A. "Zinc toxicity from tire rubber in soilless potting media." Communications in Soil Science and Plant Analysis 27, no. 13-14 (1996): 2615–23. http://dx.doi.org/10.1080/00103629609369726.

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28

Farhan, Amjad Farhan Ashraf, Abd Jamil Zakaria, Prof Nashriyah Mat, and Khamsah Suryati Mohd. "Soilless Media Culture-A Propitious Auxiliary for Crop Production." Asian Journal of Crop Science 10, no. 1 (2017): 1–9. http://dx.doi.org/10.3923/ajcs.2018.1.9.

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29

Adediran, J. A. "Growth of Tomato and Lettuce Seedlings in Soilless Media." Journal of Vegetable Science 11, no. 1 (2005): 5–15. http://dx.doi.org/10.1300/j484v11n01_02.

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30

Privé, Jean-Pierre, and Charlie Embree. "Freezing media affect cooling rate and regrowth of KSC 28 apple rootstock." Canadian Journal of Plant Science 77, no. 3 (1997): 469–71. http://dx.doi.org/10.4141/p96-171.

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To examine the effect that media have on cooling rates and subsequent plant regrowth, bare-rooted Kentville Select Clone 28 (KSC28) apple (Malus domestica Borkh.) roots were placed in various media (water, sawdust, soilless mixture and plastic bag) and set in a controlled environment chamber preset to −12 °C. Cooling rates differed between media with water and the plastic bag requiring the most and the least time to reach −12 °C, respectively. Shoot and root regrowth were similar for all treatments except water, which was significantly reduced. The plastic bag treatment provided the most unifo

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31

Salisu, Monsuru Adekunle, Zulkefly Sulaiman, Ridzwan Che Rus, et al. "Water use efficiency, plant growth and vegetative traits of rubber (Hevea brasiliensis) seedlings grown using different growing media and water levels." SEPTEMBER 2020, no. 14(9):2020 (September 20, 2020): 1497–505. http://dx.doi.org/10.21475/ajcs.20.14.09.p2643.

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The aim of this study was to evaluate the effects of soilless media and water levels on growth and physiological response of rubber plant. The four water levels were I50: 50%, I75: 75%, I100: 100% and I150: 150%) with three replications per water treatment and four soilless media. Water levels were determined as irrigation needed for the root zone in growing media to rise to field capacity I100:100%, at field capacity (FC). The experiment was laid out in randomized complete block design (RCBD) in factorial arrangement 3 x 4 with three replications. Soilless medium contains proportion of vermic

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32

Far, Ahmad M. Al, Maher J. Tadros, and Ibrahim M. Makhadmeh. "Evaluation of different soilless media on growth, quality, and yield of cucumber (Cucumis sativus L.) grown under greenhouse conditions." August 2019, no. 13(08):2019 (August 20, 2019): 1388–401. http://dx.doi.org/10.21475/ajcs.19.13.08.p2122.

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This experiment was conducted during spring growing season of 2018 at Jordan University of Science and Technology (JUST) campus in northern Jordan 32.4950° N, 35.9912° E. The aim of the study was to evaluate the effect of different soilless media such as T: Tuff 100%; TP: Tuff + Perlite 50% each; TPS: Tuff + Perlite + Sawdust 33% each; and TS: Tuff + Sawdust 50% each on some of morphological, physiological and biochemical characteristics related to the quality and quantity of seedless and baby cucumber cultivars. The experimental design was split plot with factorial arrangements and four repli

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Cytryn, Eddie, Irit Levkovitch, Yael Negreanu, Scot Dowd, Sammy Frenk, and Avner Silber. "Impact of Short-Term Acidification on Nitrification and Nitrifying Bacterial Community Dynamics in Soilless Cultivation Media." Applied and Environmental Microbiology 78, no. 18 (2012): 6576–82. http://dx.doi.org/10.1128/aem.01545-12.

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ABSTRACTSoilless medium-based horticulture systems are highly prevalent due to their capacity to optimize growth of high-cash crops. However, these systems are highly dynamic and more sensitive to physiochemical and pH perturbations than traditional soil-based systems, especially during nitrification associated with ammonia-based fertilization. The objective of this study was to assess the impact of nitrification-generated acidification on ammonia oxidation rates and nitrifying bacterial community dynamics in soilless growth media. To achieve this goal, perlite soilless growth medium from a co

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Lang, Harvey J., and George C. Elliott. "Influence of Ammonium: Nitrate Ratio and Nitrogen Concentration on Nitrification Activity in Soilless Potting Media." Journal of the American Society for Horticultural Science 116, no. 4 (1991): 642–45. http://dx.doi.org/10.21273/jashs.116.4.642.

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Effects of medium, NH4: N03, ratio, and N fertilizer rate on the development of NH4 oxidation in soilless potting media were evaluated. In two separate experiments, NH4 oxidizing activity increased to a maximum (4 to 6 weeks of cropping) and then dropped off sharply. Ammonium oxidation activity varied significantly among types of soilless potting media. Media fertilized with 1 NH4-N: 3 N03-N had higher rates of NH4 oxidation than media fertilized with ratios of either 1:1 or 3:1. Nitrogen fertilization at 15 mm gave consistently higher oxidation rates than fertilization at 30 mm. In general, m

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ADAK, Nafiye, and Hamide GUBBUK. "Effect of Planting Systems and Growing Media on Earliness, Yield and Quality of Strawberry Cultivation under Soilless Culture." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 43, no. 1 (2015): 204–9. http://dx.doi.org/10.15835/nbha4319815.

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Soilless growing is becoming an attractive option because of the contamination of agricultural land due to the use of excessive fertilisers and insecticides to get higher productivity per unit area and the yield advantage with soilless culture getting more yield per unit area than the conventional growing. Effects of two planting systems and various growing media on earliness, yield and quality (colour L, C, ho, the rupture of calyx, firmness, total soluble solid, acidity and vitamin C) in strawberry (Fragaria Ã— ananassa Duch.) cultivation under soilless culture was studied. Two different pla

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Amery, Fien, Jane Debode, Sarah Ommeslag, Rian Visser, Caroline De Tender, and Bart Vandecasteele. "Biochar for Circular Horticulture: Feedstock Related Effects in Soilless Cultivation." Agronomy 11, no. 4 (2021): 629. http://dx.doi.org/10.3390/agronomy11040629.

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Biochar has previously been used in growing media blends as fertilizer or for improving plant growth, disease suppression, and as a sustainable replacement of peat. To achieve optimal circular horticulture, we propose here to reuse the biochar from spent growing media. However, it is unclear to what extent the biochar feedstock determines the mode of action of the biochar and if use of spent growing media biochar may encounter nutrient or salt problems. Differences in chemical characteristics, nutrient release, and interaction in a leaching experiment and effects on plant growth, nutrient upta

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Sharma-Poudyal, D., C. Fraley, and N. K. Osterbauer. "Surveying for Virus-vectoring Nematodes in Container-grown Blueberry Plants in Oregon." Plant Health Progress 17, no. 3 (2016): 175–76. http://dx.doi.org/10.1094/php-br-16-0029.

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The goal of this study was to determine the risk of finding virus-vectoring nematodes in containerized blueberry plants placed on gravel. To detect dagger nematode, soil, and potting media samples were collected from blueberry nurseries growing plants in containers using soilless potting media, with the containers placed on a gravel bed or, for one nursery, on a plastic sheet placed on the soil surface. Potting media samples were collected from containers holding plants and soil samples were collected from beneath the gravel or plastic barrier. Nematodes were extracted from all of the samples

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Yan, Zhinong, M. S. Reddy, and Joseph W. Kloepper. "Survival and colonization of rhizobacteria in a tomato transplant system." Canadian Journal of Microbiology 49, no. 6 (2003): 383–89. http://dx.doi.org/10.1139/w03-051.

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Plant-growth-promoting rhizobacteria (PGPR) are used on crops most often as seed treatments; however, an alternative application method for transplanted vegetables is mixing PGPR into the soilless medium in which the transplants are grown. Studies were undertaken to compare root colonization and persistence of rifampicin-resistant mutants of PGPR strains Bacillus pumilus SE34 and Pseudomonas fluorescens 89B61, SE34r and 89B61r, on tomato as a function of application method. When the bacteria were incorporated into Promix(tm) soilless medium at log 6, 7, and 8 colony- forming units/g, populatio

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Dueitt, Shelly D., and Steven E. Newman. "RICE HULLS AS A SOILLESS MEDIA COMPONENT FOR GREENHOUSE-GROWN PLANTS." HortScience 29, no. 7 (1994): 736c—736. http://dx.doi.org/10.21273/hortsci.29.7.736c.

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Rice hulls, a by-product of rice milling, were used at various rates in greenhouse media. The objective of this study was to determine if rice hulls can replace peat moss. Hulls, aged and fresh, were blended with vermiculite and peat moss from 0 to 50%, by volume replacing peat moss. Physical and chemical properties including bulk density, total pore space, water retention, pH and soluble salt concentrations were determined in the media blends. Marigolds and salvia were transplanted into 13 cm azalea pots containing each media. The bulk density increased with increasing levels of hulls. Total

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Elliott, George C., and Harvey J. Lang. "Effects of Fungicides on Nitrogen Transformations in Soilless Potting Media." Journal of the American Society for Horticultural Science 116, no. 6 (1991): 961–64. http://dx.doi.org/10.21273/jashs.116.6.961.

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Fungicides were applied at label rates to two commercial soilless potting media in which Iris siberica L. crowns had been potted and were subsequently grown under greenhouse conditions. Effects of fungicides on urea hydrolysis were inconsistent and generally insignificant. Ammonium oxidation was inhibited to varying degrees by Truban, Benlate, Banol, and Subdue. In a subsequent experiment, the same fungicides were added to cropped samples of the same media in vitro, followed 12 hours later by a solution containing urea and ammonium. Urea hydrolysis was essentially unaffected by fungicide treat

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Roberts, Bruce R., Henry F. Decker, Lindsey M. Ganahl, and Elizabeth Yarmark. "Biosolid Residues as Soilless Media for Growing Creeping Bentgrass Sod." HortTechnology 11, no. 3 (2001): 451–55. http://dx.doi.org/10.21273/horttech.11.3.451.

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Two biosolid-containing waste media [composted sewage sludge (Com-Til) and incinerated biosolids (flume sand)] were evaluated as soilless media for growing `Crenshaw', `Penncross', and `ProCup' creeping bentgrass sod (Agrostis palustris). The media were combined with sand and either sphagnum peat or a commercial growing mix (Metromix) and leached with 5.1 fl oz (150 mL) tap water either zero, one or three times before seeding. Leaching with tap water to remove soluble salts had no beneficial effect on germination or dry mass accumulation. Flume sand was not a particularly good rootzone compone

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Handreck, Kevin A. "Extractants for assessing plant‐available phosphorus in soilless potting media." Communications in Soil Science and Plant Analysis 26, no. 3-4 (1995): 329–38. http://dx.doi.org/10.1080/00103629509369301.

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Spiers, T. M., and G. Fietje. "Green Waste Compost as a Component in Soilless Growing Media." Compost Science & Utilization 8, no. 1 (2000): 19–23. http://dx.doi.org/10.1080/1065657x.2000.10701745.

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Pooyeh, F., Gh Peyvast, and J. A. Olfati. "Growing Media Including Palm Waste in Soilless Culture of Cucumber." International Journal of Vegetable Science 18, no. 1 (2012): 20–28. http://dx.doi.org/10.1080/19315260.2011.568599.

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Lamont, John R., and George C. Elliott. "Anaerobically digested dairy fiber in soilless potting media for poinsettias." International Journal of Recycling of Organic Waste in Agriculture 5, no. 2 (2016): 173–77. http://dx.doi.org/10.1007/s40093-016-0130-x.

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Oh, Young-Mi, Paul V. Nelson, and Dean L. Hesterberg. "256 Evaluation of Phosphate Desorption Characteristics of Clay Minerals for Soilless Root Media." HortScience 34, no. 3 (1999): 486C—486. http://dx.doi.org/10.21273/hortsci.34.3.486c.

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Soilless root media retain very little phosphate. This characteristic necessitates continual application of phosphate, which leads to excessive application and leaching. The phosphate desorption characteristics of synthetic hematite (a-Fe2O3), goethite (a-FeOOH), allophane (Si3Al4O12*nH2O), and a commercial alumina (Al2O3), previously determined for their maximum adsorption capacities, were evaluated to determine their potential for providing a low, constant soil solution phosphate supply with low phosphate leaching from soilless root media. The desorption isotherms of the clay minerals were o

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Lynch, Jonathan, and Kathleen Brown. "679 Intelligent Media: Use of Buffered Phosphate for Production of Ornamentals in Soilless Media." HortScience 34, no. 3 (1999): 565D—565. http://dx.doi.org/10.21273/hortsci.34.3.565d.

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We have developed solid-phase P buffers capable of maintaining P concentrations in soiless media much lower than conventional fertilizers, in the range of available P levels found in natural soil. In addition to substantially reducing PGH reaching into the environment, these buffers can have a number of useful effects on crop growth. Using various floriculture and ornamental species, plants grown in media buffered at low P levels have stimulated root branching and growth, increased drought resistance, better transplant establishment, better shoot form, better vegetative growth, increased flowe

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Atzori, Giulia, Catello Pane, Massimo Zaccardelli, Sonia Cacini, and Daniele Massa. "The Role of Peat-Free Organic Substrates in the Sustainable Management of Soilless Cultivations." Agronomy 11, no. 6 (2021): 1236. http://dx.doi.org/10.3390/agronomy11061236.

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Vegetable and ornamental crops require high input demand to adequately support their standard commercial quality and yield. For these crops, a very high level of agronomic use efficiency of many productive factors can be achieved in soilless culture. For example, the benefits derived from the adoption of soilless closed loops for the recirculation of the nutrient solution are well known as a benchmark of excellence for nutrient and water use efficiency. The challenges that we now face are as follows: (i) making soilless systems more inclusive of sustainable and eco-friendly growing substrates,

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Andrews, Pauline H., and P. Allen Hammer. "(128) Determination of Limestone Requirement of Soilless Root Media for a Specific pH." HortScience 40, no. 4 (2005): 1086A—1086. http://dx.doi.org/10.21273/hortsci.40.4.1086a.

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Limestone requirement tests are routine in agronomic laboratories; however, no tests exist for soilless root medium although there is still a need to predict the limestone additions. This research was to develop a rapid, accurate test to determine the limestone requirement of soilless root media for a specific pH. Thirty-four media formulations were amended with increasing rates of limestone. Media were incubated in the greenhouse. Pots were irrigated to container capacity every 2 days with RO-water; pH was recorded after 5 weeks; and limestone requirement for pH 5.5 was determined for each me

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Kuo, S., R. L. Hummel, E. J. Jellum, and D. Winters. "Solubility and Leachability of Fishwaste Compost Phosphorus in Soilless Growing Media." Journal of Environmental Quality 28, no. 1 (1999): 164–69. http://dx.doi.org/10.2134/jeq1999.00472425002800010019x.

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