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Yaguang Luo

major commercial processors and found that the off-odor was different from the different processors. Observations made at the processing plants revealed large differences in wash system designs and water reuse practices. The findings reported in this

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Luis A. Valdez-Aguilar, Catherine M. Grieve, James Poss, and Michael A. Mellano

water reuse systems. II. Plant-ion relations Agr. Water Mgt. 70 121 135 Hu, Y. Schmidhalter, U. 2005 Drought and salinity: A comparison of their effects on mineral nutrition of plants J. Plant Nutr. Soil Sci. 168 541 549 Islam, A.K.M.S. Edwards, D

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Genhua Niu, Raul I. Cabrera, Terri W. Starman, and Charles R. Hall

funding from RGBI for “urban landscape water conservation” (Task 5) and “saline and wastewater management and water reuse” (Task 7) to support our research and extension activities on salt tolerance and water conservation of ornamental plants. The Texas

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Michael C. Shannon, Catherine M. Grieve, Scott M. Lesch, and John H. Draper

Saline agricultural drainage water may be used as a resource to grow high value horticultural crops and reduce the volume of drainage for eventual disposal. To explore reuse options the effects of salinity and timing of application were tested on selected leafy vegetables grown in 24 sand culture plots in Riverside, Calif. The leafy winter vegetables included `Ruby Red Chard' Swiss chard [Beta vulgaris L. var. flavescens (Lam.) Lam.], `Space' spinach (Spinacia oleracea L.), `Vitamin Green' salad greens [Brassica rapa L. (Narinosa Group)], `Red Giant' mustard greens [Brassica juncea L. (Czerniak)], pac choi [Brassica rapa L. (Chinensis Group)], `Winterbor' kale [Brassica oleracea L. (Acephala Group)], tatsoi [Brassica rapa L. (Narinosa Group)], `Salad King' curly endive (Cichorium endivia L.), and `Red Preco No. 1' radicchio (Cichorium intybus L.). All vegetables were planted at the same time and irrigated initially with tap water and nutrients. At 3 and 7 weeks after seeding (application times), six salinity treatments were initiated by adding salts to the irrigation water to represent the chemical compositions of drainage waters found typically in the San Joaquin Valley, Calif. The six salinity treatments had electrical conductivities of 3 (control), 7, 11, 15, 19, or 23 dS·m-1. A randomized complete block design was used with (6 salinities × 2 application times × 2 replications). Within each plot a 1.5-m row of each of the nine vegetables was grown as split plots. Salinity reduced fresh weight (FW) yields of all species. Salt stress applied at 3 weeks after seeding reduced FWs for seven of the nine vegetables compared to salination at 7 weeks. Analyses of salt tolerance curves, maximum yields, and the point of 50% yield reduction (C50) were conducted. Greens produced the highest biomass at 874 g/plant, but was the most affected by application time. Swiss chard and radicchio were not significantly affected by timing of salinity application, and Swiss chard was the most salt tolerant overall. Greens, kale, pac choi, and to a lesser extent, tatsoi, have potential as winter-grown, leafy vegetables in drainage water reuse systems.

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Genhua Niu and Raul I. Cabrera

. Reclaimed water is also improperly called by other terms, including recycled water, urban wastewater, urban water reuse, and urban effluent ( Duncan et al., 2009 ). These latter terms actually denote urban water sources that have not been treated and include

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Genhua Niu, Denise S. Rodriguez, and Mengmeng Gu

. O'Neill M. Duriancik L. Throwe J. 2008 Opportunities and challenges in agricultural water reuse: Final report USDA-CSREES Fox, L.J. Grose, J.N. Appleton, B.L. Donohue, S

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Qiang Liu, Youping Sun, Genhua Niu, James Altland, Lifei Chen, and Lijuan Jiang

122 586 593 Cavins, T.J. Whipker, B.E. Fonteno, W.C. 2008 Pourthru: A method for monitoring nutrition in the greenhouse Acta Hort. 779 289 297 Dobrowolski, J. O’Neill, M. Duriancik, L. Throwe, J. 2008 Opportunities and challenges in agricultural water

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Genhua Niu, Denise S. Rodriguez, and Terri Starman

'Neill, M. Duriancik, L. Throwe, J. 2008 Opportunities and challenges in agricultural water reuse: Final report USDA–CSREES Fox, L.J. Grose, J.N. Appleton, B.L. Donohue, S.J. 2005

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Jinghua Fan, George Hochmuth, Jason Kruse, and Jerry Sartain

mg·L −1 . Outdoor field-scale experiments are needed to validate the results from these greenhouse studies. Units Literature cited Asano, T. Burton, F.L. Leverenz, H.L. Tsuchihashi, R. Tchobanoglous, G. 2007 Water reuse: Issues, technologies, and

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Catherine M. Grieve, James A. Poss, Peter J. Shouse, and Christy T. Carter

flower species is a suitable candidate for saline water reuse systems. Stock ( Matthiola incana ), a relatively salt-tolerant species, produced marketable stems under irrigation with saline solutions ranging from 2 to 11 dS·m −1 amended with substrate N