Research concerning optimization of foliar fertilization of winter wheat with nitrogen and copper
1995
Bobrzecka, D. | Krauze, A. (Akademia Rolniczo-Techniczna, Olsztyn (Poland). Katedra Chemii Rolnej)
It was found that in the case of optimum weather conditions, the dose equal to 0.4 kg of copper/ha resulted in highest yield level. It was applied in the form of a foliar fertilizer, at the stage of culm emergence, together with 50 kg of N/ha in 10 percent solution of urea, e.i. maintaining the ratio: 4 g Cu per 1 kg N and nitrogen dose amounting to 125 kg of N/ha. The improvement in soil fertility, as far as the content of available copper is concerned, was achieved only by means of its pre-sowing application in the dose of 5.0 kg/ha
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