Effects of organic and inorganic fertilization on wheat quality

Abstract

The influence of organic and nitrogen fertilization on the amount and quality of wheat yield was examined in Keszthely on Ramann's brown forest soil containing an average level of potassium, a low level of phosphorus and a medium level of nitrogen. The experiment involved treatments with 0-200 kg/hectare of nitrogen, 100 kg/hectare each of phosphorus (P2O5) and potassium (K2O), farmyard manure, straw and green manure, together with a non-fertilized control. Nitrogen fertilization had a substantial effect on the yield (the 1.98 t/hectare yield was increased threefold by 200 kg/hectare of nitrogen). The treatments modified the quality of wheat significantly. Nitrogen fertilization together with farmyard manure increased the gluten content (to 35.8% compared to 11.35% in the control). The farinographic index increased to 77.4 (from 33.9 in the control) and the Zeleny number also increased significantly (from 10 in the control to 35.5). When low rates of nitrogen were applied overall improvement was not achieved in spite of the favourable influence of farmyard manure.