|Author:||Aziz, M. A. ; Sallam, M. F. A. ; El-Gendy, A. M. ; El-Moniem, M. A.|
|Book Group Author:||NA|
The effect of soil conditioning, irrigation water salinity, irrigation interval and systems on some chemical properties of sandy soils of Inshas, Egypt, and on cucumber production and water use efficiency (WUE) were studied. The conditioners were tafla [24% clay, 43% silt, and 32% fine sand], farmyard manure and their mixture, incorporated into the surface soil layer (0-15 cm) at the rate of 5% (weight/weight) before cultivation of cucumber. The irrigation water salinities were 350 (tap water), 2000 and 4000 ppm. Irrigation intervals every second day and every third day were used under surface and drip irrigation systems. The different soil chemical properties, cucumber yield and WUE were determined after two successive growth seasons (1991-1992). The results indicated that soil conditioning markedly increased the amount of total soluble salts, especially in the treatments of saline irrigation water, regardless of the other treatments. This increase took vertical and horizontal directions under drip irrigation conditions and a vertical one only under furrow irrigation conditions. The increase in soil salinity in the conditioned treatments followed the order: tafla > organic manure > mixture. Low soil salinity was found with irrigation after one day (F1) as compared with that after two days (F2) under both systems of irrigation. Furrow irrigation plots contained higher values of ECe [electrical conductivity] than drip ones. The use of drip irrigation system controlled the salinity increment in the root zone. The all conditioning treatments contained more soluble cations and anions as compared with untreated soil. Sodium and chloride ions had the higher values, while the lowest ones were for magnesium and potassium. The use of saline irrigation water increased the mounts of soluble calcium, sodium and chloride. The effect of irrigation water salinity on soluble ions, especially under the conditions of longer irrigation interval (F2), followed the order: Na+ > Ca2+ > Mg2+> K+ and Cl- > HCO3- > SO4-2. The use of furrow irrigation was more effective in increasing the values of Ece and soluble ions. The maximum yield of cucumber was obtained in the plots treated with mixture (tafla and manure), low irrigation water salinity (tap water), and F1 under drip irrigation system. The interaction among the studied factors on the cucumber yield was highly significant. The higher WUE of cucumber was obtained in the treatment received both conditioners, irrigated with low saline irrigation water (tap water) for F2 under drip irrigation system. Drip irrigation was the best method for water management, high cucumber yield, water conservation and water use efficiency.
|Pages:||377 - 411|
|Journal:||Egyptian Journal of Soil Science|
anions, cations, chemical properties, cucumbers, cucurbitvegetables, electrical conductivity, farmyard manure, fruit vegetables,furrow irrigation, incorporation, interactions, irrigation scheduling,irrigation systems, irrigation water, saline water, salinity, salts insoil, sandy soils, soil, soil conditioners, soil salinity, trickleirrigation, vegetables, water use efficiency, yields, Egypt, Cucumissativus, Cucurbitaceae, Cucumis, Cucurbitaceae, Violales, dicotyledons,angiosperms, Spermatophyta, plants, eukaryotes, North Africa, Africa,Mediterranean Region, Middle East, Developing Countries, FYM, gherkins,salt water, vegetable crops, Fertilizers and other Amendments (JJ700),Soil Water Management (Irrigation and Drainage) (JJ800) (Revised June2002) [formerly Soil Water Management], Soil Chemistry and Mineralogy(JJ200), Plant Production (FF100), Plant Water Relations (FF062)