EFFECT OF SOIL AND FOLIAR APPLICATIONS OF DIFFERENT DOSES OF NPK FERTILIZERS ON QUALITY AND QUANTITY OF WHEAT (Triticum aestivum L.) CROP

Document Type : Research articles.

Authors

Soil, Water and Environment, Res. Inst., Agricultural Research Center

Abstract

Two field experiments were designed in the Farm of Sids
Agricultural Reasearch Station, ARC, Beni Swif Governorate, Egypt to
study the effect of different doses of N, P, and K through soil and foliar
applications and their interactions on wheat plant (Triticum aestivum L.).
Three levels of soil NPK applications, i.e., 0.0, 50%, and 100% from its
recommended rates (RR) and four foliar spraying treatments were used
(without spraying and spraying two, threee and four times). The results
revealed that, plant height, dry weight/plant, number of spikes/m2,
number of grains/spike, grain and straw yields, N, P and K concentration
and uptake by grains and/or straw as well as protein percentages in
grains were significantly increased by increasing the soil application of
N, P and K up to the recommended rates or by spraying the plants four
times. Combined 50% RR NPK + foliar spraying four times gave highest
values of the abovementioned parameters, equal to those obtained by
100% RR NPK. The highest values of N, P and K uptake by grains
and/or straw and protein percentage in grains produced under 100% RR
+ foliar spraying four times. The weight of thouthand grain significantly
increased by increasing soil application rates, while, it did not affect by
the number of foliar spraying numbers.

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