Irrigation scheduling and intercropping for rationalization of poor quality water-use.

Book Title: NA
Year Published: 2007
Month Published: NA
Author: Wahba, S. A. ; Shaaban, S. M. ; Okasha, E. M.
Book Group Author: NA

A two successive years field experiment was carried out to study the possibility of rationalizing the lonely available irrigation water to be used in some marginal newly reclaimed areas by scheduling irrigation and intercropping. Rhodes grass (Chloris gayana, Kunth) or/and Leucaena (Leucaena leucocephala) were cultivated at Baltiem, Kafr El-Sheikh Governorate, Egypt. All experimental plots were irrigated using mixed irrigation water obtained from El-Sheikha Canal in Baltiem, Kafr El-Sheikh. The mixing ratio was 75% Nile water: 25% agricultural drainage water. The irrigation scheduling was carried out through compensating 25 mm of water depleted by evapotranspiration, measured using class. A evaporation pan, for each irrigation treatment (100, 80, and 66.7% of ETo). There are significant differences between all treatments regarding the (fresh and dry) biomass yields. The intercropping planting gave the best results for both biomass yield and water use efficiency through the integration of the root systems distribution of the intercropped plants in the root zone. There were significant differences between the irrigation treatments concerning salinization of soil as it was adversely related to irrigation water level. Under all irrigation treatments, the highest reduction in soil salinity was devoted to the intercropping planting. Intercropping increases the organic matter content in the root zone compared to that of the single planting. A conclusion was drawn that irrigation scheduling and intercropping can be used in the marginal reclaimed lands for increasing the biomass fodder yield and water use efficiency besides its positive effect on salt deaccumulation and increasing OM content in the root zone.

Pages: 143 - 153
Volume: 47
Number: 2
Journal: Egyptian Journal of Soil Science
Journal ISO: NA
Organization: NA
Publisher: NA
ISSN: 0302-6701

biomass, biomass production, crop yield, cropping systems,drainage water, evaporation, evapotranspiration, fodder crops,intercropping, irrigation, irrigation scheduling, irrigation water,marginal land, reclaimed land, river water, salinization, soil organicmatter, soil salinity, sole cropping, water quality, water useefficiency, Egypt, Chloris gayana, Leucaena leucocephala, Chloris,Poaceae, Cyperales, monocotyledons, angiosperms, Spermatophyta, plants,eukaryotes, North Africa, Africa, Mediterranean Region, Middle East,Developing Countries, Leucaena, Mimosoideae, Fabaceae, Fabales,dicotyledons, organic matter in soil, water composition and quality,watering, Forage and Fodder Crops (FF007) (New March 2000), Plant WaterRelations (FF062), Plant Production (FF100), Plant Cropping Systems(FF150), Soil Chemistry and Mineralogy (JJ200), Soil Water Management(Irrigation and Drainage) (JJ800) (Revised June 2002) [formerly SoilWater Management], Agroforestry and Multipurpose Trees;

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