Effect of integrated use of nutrients on foliar nutrient content, fruit nutrient uptake, soil properties, yield and economics of Papaya (Carica papaya L.) cv. Coorg Honey Dew

AbstractAn experiment was conducted during the year 2015–2016 and 2016–2017 at the experimental plot, College of Agriculture, Chiplima, Odisha University of Agriculture and Technology, Sambalpur, Odisha to find out the effect of integrated use nutrients (organic, inorganic and biofertilizers ) on foliar nutrient content, fruit nutrient uptake, soil properties and economics of papaya cv. Coorg Honey Dew. The cumulative fruit yield was found highest (55.89 kg/plant) in T7which was closely followed by (53.91 kg/plant) under treatment T8. The nutrient content in leaf ranges from 1.07–2.13% (N), 0.14–0.27% (P) and 1.98–2.98% (K) after final harvest of the fruits. The uptake of nutrients by papaya fruits per hectare was observed to be 340 kg nitrogen, 104 kg phosphorus and 451 kg potassium in 100% RDF + PSB + AZS + AZO and minimum (18,9 and 49 kg) obtained in control. The NPK content in soil was maximum in100% RDF + PSB + AZS + AZO (158 kg, P 28 kg and K 133 kg per ha) and minimum was recorded in control (124,11 and 113 kg). Similarly higher organic carbon (0.58g/kg soil) was obtained in 100% RDF + PSB + AZS + AZO with lower (0.39 g/kg) in control. The soil microbial population was found to be maximum in 100% RDF + PSB + AZS + AZO. Highest B: C ratio (3.30) was noticed in 75% RDF + PSB + AZS + AZO followed by 100% RDF + PSB + AZO (3.25) and 100% RDF + PSB + AZS (3.24).