Search Results

You are looking at 1 - 10 of 18 items for :

  • "ebb and flood irrigation" x
  • Refine by Access: All x
Clear All
Free access

Stephanie A. Beeks and Michael R. Evans

substitutes for plastic containers in long-term ebb-and-flood irrigation systems because of the low used strengths, high percentages of algae coverage, and shorter irrigation intervals. Literature Cited Evans, M.R. Hensley, D. 2004 Plant growth in plastic

Full access

Kimberly A. Klock-Moore and Timothy K. Broschat

In this study, areca palm (Dypsis lutescens), crossandra (Crossandra infundibuliformis), pentas (Pentas lanceolat), and philodendron (Philodendron) `Hope' plants were transplanted into containers filled with four growing substrates and watered daily, every 2 days, or every 3 days using subirrigation or overhead irrigation. Plants were grown in either a pine bark/sedge peat/sand substrate (BSS), Metro-mix 500 (MM), Pro-mix GSX (PM), or a 60% biosolid substrate (SYT). For both irrigation systems, final shoot dry weight of pentas, crossandra, philodendron, and areca palm plants in each substrate was greatest for plants watered every day and least for plants watered every 3 days. At all three irrigation frequencies, pentas, crossandra, and philodendron shoot dry weight in subirrigated pots filled with PM was greater than in overhead watered pots filled with PM. PM had the highest total pore space and moisture content of the four substrates examined. There was no difference in pentas, crossandra, or philodendron shoot dry weight between the irrigation systems, at all three irrigation frequencies, when plants were grown in BSS, MM, or SYT. However, for all four substrates and at all three irrigation frequencies, areca palm shoot dry weight was greater in overhead watered pots than in subirrigated pots. The final substrate electrical conductivity (EC) in all four subirrigated palm substrates was more than double the concentrations in overhead watered palm substrates. In this study, largest pentas, crossandra, and philodendron plants were grown in pots filled with PM and subirrigated daily, while largest areca palm plants were grown in pots filled with MM or SYT and watered overhead daily.

Free access

Maria L. Burgos-Garay, Chuanxue Hong, and Gary W. Moorman

Heterotrophic bacteria present in recycled greenhouse irrigation water (RIW) were characterized and then evaluated for their effect on Pythium aphanidermatum, P. cryptoirregulare, and P. irregulare. Nutrient agar (NA) and R2A agar were used to isolate copiotrophic and oligotrophic bacteria. Bacterial isolates recovered from RIW were categorized according to whether they inhibited Pythium growth, attached to hyphae, or enhanced Pythium growth in the three Pythium species used. Three bacterial isolates were selected to determine whether their in vitro interactions with Pythium aphanidermatum, the most pathogenic of the three species used, influenced disease development in the greenhouse. An isolate of Sphingobium sp. that inhibited Pythium, Pseudomonas sp. that attached to hyphae, and Cupriavidus sp. that enhanced the growth of P. aphanidermatum in vitro were used in greenhouse experiments to examine their effects on disease development in geranium (Pelargonium ×hortorum ‘White Orbit’) grown in pasteurized potting mix in ebb and flood irrigation systems. Disease progress curves evaluating the effect of each bacterium indicate that they did not suppress or enhance disease development (P = 0.05). Thus, the effects that the bacterial isolates had in vitro differed from their effects under greenhouse conditions.

Free access

Karen L. Panter, Steven E. Newman, Amy M. Briggs, and Michael J. Roll

Three application rates of two new growing medium surfactants were tested under two different irrigation systems on Dianthus barbatus plants. The objectives of the study were to determine if either of the surfactants influenced plant growth and development and to determine if surfactant applications decreased irrigation frequencies. The three levels of surfactant tested were 0 mg·L–1 (control), 10 mg·L–1 applied at each watering, and 100 mg·L–1 applied once a week. Each surfactant and rate was tested on hand-watered and ebb-and-flood irrigated plants. D. barbatus plants were grown for 8 weeks in 875-ml (12.7 cm) pots. Plants were watered when at least one plant per treatment showed visible wilt. Results showed that phytotoxicity symptoms occurred with repeated applications of both surfactants tested, especially at the 10 mg·L–1 rate at each watering. Application of either surfactant at 10 mg·L–1 at each watering decreased plant heights, dry weights, and plant widths, and increased phytotoxicity symptoms over the controls and the 100 mg·L–1 weekly treatments. Fewer waterings were required in surfactant-treated containers.

Full access

Andrew Koeser, Gary Kling, Candice Miller, and Daniel Warnock

variety of irrigation methods beyond overhead watering (e.g., drip irrigation and ebb-and-flood irrigation)—each with its own pattern of initial wetting and saturation that could potentially impact biocontainer durability during crop production. This work

Open access

Samuel Doty, Ryan W. Dickson, and Michael Evans

growth and yield ( Gómez et al., 2019 ; Resh, 2012 ). Bedding plants are often produced in soilless substrate and containers and periodically irrigated with a fertilizer solution using drip emitters or ebb-and-flood irrigation (Lieth and Oki, 2008). An

Full access

Andrew Koeser, Sarah T. Lovell, Michael Evans, and J. Ryan Stewart

., 1994 ; Dumroese et al., 2006 ; Morvant et al., 1998 ). Ebb-and-flood-irrigated ‘Florida Sun Jade’ coleus ( Solenostemon scutellarioides ) shoot dry weight remained similar among seven different biocontainers (i.e., bioplastic, coir, manure, paper

Full access

Tongyin Li, Guihong Bi, Genhua Niu, Susmitha S. Nambuthiri, Robert L. Geneve, Xueni Wang, R. Thomas Fernandez, Youping Sun, and Xiaojie Zhao

and drip irrigation systems than under ebb-and-flood irrigation system. A drip irrigation system based on substrate moisture sensors not only helps to reduce water use in production but also may help to extend longevity of the paper containers

Full access

Susmitha Nambuthiri, Amy Fulcher, Andrew K. Koeser, Robert Geneve, and Genhua Niu

), wheat starch-derived bioresin (Terra Shell/OP47), plastic, and sphagnum peatmoss and wood pulp (Jiffy-Pot) containers ( Lopez and Camberato, 2011 ). In an experiment using ebb-and-flood irrigation, shoot dry weight of ‘Rainier Purple’ cyclamen ( Cyclamen

Full access

Dustin P. Meador, Paul R. Fisher, Philip F. Harmon, Natalia A. Peres, Max Teplitski, and Charles L. Guy

that is collected for use in catchment basins (capture-and-reuse) or recirculating (ebb and flood) irrigation systems are characterized by elevated levels of physical, chemical, and biological contaminants that result in lower water quality, compared