Published in Scientific Papers. Series A. Agronomy, Vol. LXVIII, Issue 1
Written by Antoniya STOYANOVA, Georgi STOYANOV, Gancho GANCHEV
Foliar fertilization is a widely used practice for correcting nutrient deficiencies in plants. The object of the present study are three corn hybrids (DKC 4416, LG 31.390 and Premeo), with different genetic origins. Variants of the field experience are 1. Control without irrigation, with soil fertilization with N14 in the form of ammonium nitrate; 2. Soil fertilization with N14 in the form of ammonium nitrate; 3. Fertilization with N14 + foliar fertilization with Aminosol +Lebozol B + Lebosol Zn, Nutriplant 36; 4. Fertilization with nitrogen N14 + Kinsidro Grow, N-Lock. In variants 2, 3 and 4, irrigation was carried out, with a drip irrigation system. The parameters of yield of green mass and yield of dry matter were determined. The content of crude protein, KEM, KER and PSC in green mass was calculated. Linear regression equations were developed, which show that there is a strong positive correlation between green mass yield and crude protein content. The correlation coefficients for the three hybrids r = 0.99 (DKC 4416), r = 0.96 (LG 31.390) - r = 0.93 (Premeo) were established.
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