Effect of Liquid Fertilizers on Yield, Nutrient Uptake and Nutrient Use Efficiency of Rainfed Hybrid Maize (Zea Mays L.)

摘要

The field experiment conducted on "Effect of liquid fertilizers on rainfed hybrid maize (zea mays L.) on yield, nutrient uptake and nutrient use efficiency" at the Agricultural and Horticultural Research Station, Bavikere revealed that significantly higher grain yield (83.99 q ha~(-1)) and stover yield (183.38 q ha~(-1)) was recorded with the application of nutrients as per POP + 18:18:18 @ 1.0% + Multi-K @ 1.5%. The available nitrogen was significantly influenced by liquid fertilizers. However, significantly higher available nitrogen (286.2 kg ha~(-1)), available phosphorous (30.4 kg ha~(-1)) and higher available Potassium (191.8 kg ha~(-1)) was recorded in the treatments involving application of nutrients as per POP + 18:18:18 @ 1.0% + Multi-K @ 1.5%. Significantly higher apparent crop nitrogen recovery efficiency (12.32%) and apparent crop potassium recovery efficiency (99.99%>) was recorded with the application of nutrients as per POP + 18:18:18 @ 1.0% + Multi-K @ 1.5%. Significantly apparent crop phosphorus recovery efficiency (13.18%) was recorded in the treatment involving POP + 18:18:18 @ 1.0% + Multi-K @1.0%>. It is concluded that to get maximum productivity, higher nutrient uptake and higher nutrient use efficiency from rainfed hybrid maize in Southern Transition Zone of Karnataka the crop should be fertilized with RDF + FYM@ 7.5 t ha~(-1) + ZnS0_4@ 10 kg ha~(-1)POP) + 18:18:18 @1.0% + Multi-K@1.5%.