THE INFLUENCE OF WEATHER CONDITIONS AND FERTILIZING METHOD ON PLANT HEIGHT AT DIFFERENT CULTIVARS OF WINTER WHEAT

Abstract

Examinations were performed at stacionary field experiment with fertilization that had been applied for many years (over 30) at the property of Center for Small Grains in Kragujevac (Serbia). The experiments were performed in three years period. The experiment on which examinations have been performed includes also six variants of fertilization: 1) N0 P0 K0; 2) N80. 120 P0 K0; 3) N80. 120 P60 K60; 4) N80. 120 P100 K60; 5) N80. 120 P60 K0; 6) N80. 120 P100 K0; 7) N80. 120 P0 K60. Individual fertilizers were used: KAN as the nitrogen fertilizer, superphosphate as the phosphate fertilizer, 60% potassium saltas the potassium fertilizer. The experiment included also seven different of winter wheat cultivars: Takovchanka, Ana Marija, KG 100, Lazarica, KG 56S, KG 4 and KG 5. The aim of this work was to examine the influence of various dosages and relation of mineral fertilizers on plant height of different cultivars of winter wheat. The height of plant was the varietal characteristics, but in a great extentlargely depends on the entered fertilizers and weather growing conditions. In the three year average, minimum height of plant for examined varieties of the winter wheat was on the control. The use of fertilizer had a highly significant increase in the height of winter wheat. The biggest height of plants of winter wheat in period of triennial examination, obtained in cultivar KG 4 (80 cm) at NP1K variant of fertilization, at higher nitrogene dose.