TY  - SER
AU  - Salama,M.I.
AU  - El-Samak,A.F.
AU  - El-Morsy,A.A.
AU  - Aly,K.M.M.
TI  - The beneficial effect of minimizing mineral nitrogen fertilization on sewy date palm trees by using organic and biofertilizers
KW  - Date palm
KW  - Composition
KW  - Effect of minerals on
KW  - Fertilizers
KW  - Quality
KW  - Yields
KW  - Biofertilizers
KW  - Nitrogen fertilizers
KW  - Organic fertilizers
N1  - Includes reference
N2  - Minimizing mineral nitrogen fertilization through using 50% organic N (FYM) + 50% mineral N (urea) with Azotobacter chrococcum that fixed nitrogen as biofertilizer source were tested on mature Sewy date palm trees 12- years-old grown on sandy soil in private orchard located at El-Dakhla oasis, El-Wady El-Gedeed governorate. Leaf mineral content, yield and fruit quality especially fruit heavy metals, nitrate and nitrite contents and economic evaluation comparing with the traditional nitrogen fertilization (100% mineral nitrogen) were investigated. The obtained results showed that fertilizing palm with 50% organic N+ 50% mineral N+ biotreatments tended to increase N, P, K, Ca and Mg leaf contents. Moreover, treatments, 100% mineral or 50% organic N+ 50% mineral N+ biofertilizer significantly increased the yield kg/palm without non-significant differences between them in both seasons compared to other treatments. Both treatments of 100% organic or 50% organic N+ 50% mineral N+ biofertilizer improvement physical and chemical characteristics of date fruits
UR  - http://nile.enal.sci.eg/EALE/2012/MUJPP/312/9/2411.pdf
ER  -