The influence of N & P fertilization on yield and mineral composition of wheat plants¬ under foliar application with zinc and ascorbic acid [electronic resource].

Includes references.

Two successive field experiments were carried out during 2001/2002 and 2002/2003 seasons at Meet El-Nahall Dekirnis, Dakahlia Governorate to study the influence of N & P fertilization under foliar application of zinc, ascorbic acid and its combination on yield and mineral composition of wheat plants. The results revealed that: 1- The total uptake of N and P increased with the 50 kg N fed-1 + 13.20 kg P fed-I under zinc + ascorbic acid treatment, whereas the total uptake of K was increased with the 70 kg N fed-1 + 13.20 kg P fed-1 under the same previous treatment. 2- The total uptake of Fe increased with the 70 kg N fed-1 + 6.60 kg I) fed-I under zinc + ascorbic acid treatment, meanwhile the total uptake of Mn was increased with the 50 kg N fed-1 + 6.60 kg ,P fed-I levels under ascorbic acid treatment, as well as the total uptake of Zn was increased with the 50 kg N fed-I + 13.20 kg P fed-' under zinc + ascorbic acid treatment. 3- N-recovery percentage was increased about 25.92% with the treatment of N2= 50 kg N fed-' while the P-recovery percentage equal 38.48% with the PI= 6.60 kg P fed-I. 4- The superiority was the treatment of 50 kg N fed-1 +13.20 kg P fed-I combined with zinc + ascorbic acid treatment where it gave the highest mean values for grains yield (3.37 ton fed-1) and straw yield (5.68 ton fed-1)

Summary in Arabic.

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