Efficiency of spray dressing of wheat under conditions of drought
1993
Filipov, Kh. (Institut po Introduktsiya i Rastitelni Resursi, Sadovo (Bulgaria))
Four field trials with foliar dressing using macro-and microelements were carried out in a small region (of a radius of 5-6 km). Two of these were on shallow soils under strongly manifasted soil and atmospheric drought: one trial on soil with high dressing waters and of higher relative air humidity, and the other on highly calcareous soil poor in microelement metals. It has been found that on soils of strong water insufficiency and low atmospheric moisture, the spray dressings of wheat do not increase the grain yield and protein content of wheat. Under conditions of high relative air humidity, formation of dew and good water regime of soil, spraying with fixal B and carbamide is of a positive effect. Under conditions of drought the wheat has no reaction to foliar dressing with microelements in spite of the low content of available forms of Fe, Mn, Cu, Zn and Co in soil
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