אסיף מאגר המחקר החקלאי

Conclusions from the Permanent Plot Experiment at Gilat, Israel: Long-Term (35-Year) Effects of Manure and Fertilizer on Crop Yield, Soil Fertility, N Uptake, and Solutes Leaching in Soil

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2017

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Abstract:

Long-term application of fertilizer and manure may change soil fertility, crop yield, N uptake efficiency and nitrate and chloride leaching to underground water. The objectives were to quantify those aspects in a long-term (35-year) permanent plots field experiment in a typical arid zone (~250 mm rain) soil, and suggest fertilization and manuring regimes leading to reduced aquifer pollution by nitrate and chloride without compromising crop yield and soil sustainability. Results proved that mineral-N application exceeding plant demand leached, subject to recommended irrigation plus rainfall, below 4 m thus becoming a potential underground water pollution hazard. Leaching was significantly reduced by partially replacing fertilizer-N by manure-N, with negligible adverse effect on crop yield. Under ample manure (M2) and mineral N (N3) supply (treatment M2N3),

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Published also in:

Israel J. of Pl. Sc. (2017), vol. 64 pp. 124-136

https://brill.com/view/journals/ijps/64/3-4/article-p124_124.xml?language=en

 

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