Bull. Spec. CORESTA Congress, Harare 1994, p. 16, A 7
The effect of band fertilizing at three levels of NPK on yield and quality of flue-cured tobacco cultivated in double row system
University of Agriculture, Lublin, Poland.
A three year experiment was performed on leached brown soil showing acid reaction (pH-5,2) and low content of nutrients (P, K and Mg). The effects of broad and band fertilizing at three levels of NPK (in kg per hectare) were compared: 1/ low (N-15, P2O5-60, K2O-100); 2/ moderate (N-30, P2O5-90, K2O-150); 3/ high (N-45, P2O5-120, K2O-200). Fertilizers were applied prior to seedling transplanting (except for the high dose of N, distributed in two equal parts, the second being applied 4 weeks later). Measurements of plants during their growth period showed higher growth rate of plants on plots where band fertilizing was applied. In result, these plants were significantly higher at the beginning of their blooming period. The fertilizing method did not markedly influence the number of leaves per plant, but was essential for upper leaf size and density (weight per unit area). In result, the total yield of cured leaf was higher on average by 135 kg per ha. It is characteristic that at low rate of fertilization, band application was more effective in dry season, while at high rate of fertilization, it was more effective in high precipitation conditions. As far as chemical composition of leaves is concerned the only marked changes were noted in carbohydrates, that were higher when band fertilizing was applied.