PJB-2021-745
MONITORING THE PHOSPHORUS SOLUBILIZING BACILLUS SPP. INOCULATION EFFECT ON ZINC UPTAKE IN WHEAT
Kaynat Ahmad
Abstract
Sustainability in agriculture and food security are emerging issues of the world. Where phosphorus solubilizing bacteria (PSB) contribute substantially to enhance P availability to crops .Moreover, human zinc deficiency can be addressed by increasing the Zn concentration in wheat grains. The present study was conducted to monitor impact of PSB and Zn application on growth, yield, physiology and grain nutrient contents particularly Zn in wheat under field conditions. The treatments were T0 (control - No Zn, No PSB), T1 (ZnSO4 in Soil at 6 kg ha-1), T2 (Zn as foliar at 0.1% at tillering, flowering and grain filling stages), T3 (Zn as foliar at 0.1% at tillering, flowering and grain filling stage + Zn in soil at 6 kg ha-1), T4 (Bacillus spp. Inoculation), T5 (Bacillus spp. + ZnSO4 in soil at 6 kg ha-1), T6 (Bacillus spp. + Zn as foliar at 0.1% at tillering, flowering and grain filling stages), T7 (Bacillus spp. + Zn in soil at 6 kg ha-1 + Zn as foliar at 0.1% at tillering, flowering and grain filling stages). Treatment T7 remained a significant treatment among all and showed increases about 11.44% in plant height, 6.74% in spike length, 23.31% in plant fresh weight, 12.48% in plant dry weight and 101% in grain Zn concentration, 36.07% in grain K, 30.56% in grain P, 0.412% in grain N, 65.2% in rate of photosynthesis, 37.34% in transpiration rate, 11.98% in SPAD, 95.74% in water use efficiency, 114.2% in grain yield as compared to control (T0). It can be concluded that seed inoculation of Bacillus spp. in combination with soil Zn application and foliar Zn application is a better strategy for improving growth, yield and nutritional quality of wheat (T7). However, extensive evaluation is suggested before recommending it to farming community.
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