Effect of basal and foliar application of micronutrients on total chlorophyll, nitrogen content and yield of wheat (Triticum Aestivum)

摘要

The effectiveness of basal and foliar application of micronutrients (ZnSO_4, FeSO_4 and MnSO_4) was tested on total chlorophyll, nitrogen content and yield traits of wheat (Triticum aestivum PBW - 343). The basal application (ZnSO_4- 25 Kg~(-1)m, FCSO_4, -25 Kg/ha and MnSO_4,-10 Kg/ha) and foliar application (ZnSO_4,-5 Kg/ha, FeSO_4-5 Kg/ha and MnSO_4- 5 kg/ha) increased the total chlorophyll, nitrogen content and yield. However basal application of micronutrients was found more effective than foliarapplication in all the three parameters. Wheat is one of the most important cereal crops of India with diverse uses. In recent times, the rice-wheat cropping systems has been experiencing stagnation or decline in productivity (Bhandari et al. 2002) dueto low organic matter content of soils and low indigenous nutrient supply (Adhikari et al. 1999). Zinc is an important micronutrient reported deficient in Indian soils and plays a significant role in various enzymatic and physiological activities of plant body. It helps information of chlorophyll and auxins. Iron is an important constituent of iron porphyrin proteins like cytochromes, peroxidases, catalases etc. It is essential for the synthesis of chlorophyll and forms a very important constituent of ferredoxin which plays an important role in biological nitrogen fixation and primary photochemical reaction. Iron deficiency causes yellowing of leaf veins. Manganese acts as an activator of many respiratory enzymes and also of nitrite reductase and hydroxylamine reductase. Application of these nutrients has become inevitable for realizing potential yield of wheat.