Effect of biozyme and fertility levels on growth, yields, nutrient uptake, nutrient harvest and physiological efficiency index of soybean (glycine max l. merrill)

Experiment was conducted, during rainy season of 2006, 2007 and 2008 with NPK (20 kg N, 60 kg P2O5 and 40 kg K2O/ha), half recommended NPK, Biozyme granule @ 20, 30, and 40 kg/ha alone and along with half recommended NPK and Biozyme crop+ spray @ 200 and 400 ml/ha alone and along with half recommended NPK. At 60 DAS, Biozyme crop+ spray @ 400ml/ha + half of recommended NPK resulted highest number of trifoliate leaves (28.13 leaves/plant), leaf area (1814.21 cm²/plant), LAI (5.945), and total chlorophyll content (1.99 mg/g leaf fresh weight) which stood 3.57, 2.97, 3.17 and 16.13 % higher over recommended NPK, respectively. Similarly, 400 ml Biozyme crop+ with half of recommended NPK maintained, 9.01, 6.27, 5.41, 12.91 and 3.42 % higher branches/plant, pods/plant, seeds/pod and seed yield/plant and increased the seed yield by 8.54%, straw yield by 26.43% and biological yield by 17.13%, respectively over recommended NPK. Biozyme spray 400 ml/ha increased N uptake by 12.17, P uptake by 4.59 over recommended NPK. Higher Nutrient Harvest Index and Physiological Efficiency Indices observed under sole treatments of Biozyme.