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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/9946

Title: Reuse of Date Palm by-products for efficient use of nitrogen fertilizer.
Authors: Al Al-Sheikh
G. Abdel-Nasser
A. Sh. Sallam
Issue Date: 2009
Publisher: The Second International Conference On Date Palm. 24-26/10/1430 H corresponding to 13-15/10/2009. College of Agric. and Vet. Med., Qassim University - Al–Qassim, Saudi Arabia
Abstract: The present study aims to improve the efficiency of nitrogen fertilizer applied to soil by reuse of date palm by- products after grinding and mixing with sandy soil. The date palm by-products was collected from different areas, then air dried and grinding .Two fractions were selected less than 0.5 mm and 1-2 mm . The powder was mixed with sandy soil at rates of 1.0, 2.5, 5.0, and 10.0% (w/w) besides the control treatment (without application of date palm by-products). The treated soil was incubated at field capacity in plastic container for 30 days. After the incubation period, the soil air dried and passed through a 2.0 mm sieve. The physical and chemical analysis of sandy and treated soils was performed. The PVC transparent columns with 6 cm diameter and 30 cm length were packed with sandy soil at 1.6 g/cm3 bulk density to 20 cm length, and then a 5 cm surface layer of treated soil was applied. The soil columns were arranged in which we can studying the following treatments: 1) volume fraction of powder, 2)the rate of date palm by-products applications, and 3) rate of water applied (5 and 10 pore volume). The fertilizer was applied at the required rate to soil surface and then the water was applied at required rates. The leachate out of soil columns was received. Volume of leachate and concentration of N was determined. At the end of experiment, the soil was cutting to 5 cm slices for determining the soluble N. Total N in soil and percolate were calculated and then the loss of fertilizers and fertilizer use efficiency was calculated under the experimental conditions. The results showed that increasing the rate of date palm by-products led to reduce the N in leachate and increased in soil columns. Also, increasing of applied water led to increase the fertilizers loss in leachate. According to the present results, it is possible to reuse the date palm by-products in increasing the fertilizers use efficiency and reduces the problems of groundwater pollution and accumulation of these residues in farm.
URI: http://hdl.handle.net/123456789/9946
Appears in Collections:College of Foods And Agricultural Science

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