Effect of different levels of organic and inorganic fertilizers on growth, yield and quality of summer groundnut (Arachis hypogaea L.) grown on inceptisol

Abstract

The experiment on effect of different levels of organic and inorganic fertilizers on yield and quality of summer groundnut (Arachis hypogaea L.) grown on Inceptisol was carried out at Agricultural Research Station, Kasbe Digraj, Dist: Sangli (MS) during summer 2019. The experimental soil was alkaline, calcareous, clay in texture, low in available nitrogen, medium in available phosphorus and very high in available potassium. The experiment was laid out in randomized block design with eight treatments and three replications. The treatment consist of T1-absolute control, T2-GRDF (25:50:00 N:P2O5:K2O kg ha-1+ 10 t FYM ha-1), T3-100% RDN through FYM, T4-100% RDN through press mud compost (PMC), T5-100% RDN through vermicompost, T6-50% RDN through FYM + 50% RDN through PMC, T7-50% RDN through FYM + 50% RDN through vermicompost and, T8-33% RDN through FYM + 33% RDN through PMC + 33% RDN through vermicompost. Biofertilizers – Rhizobium, PSB- 25 g kg-1 of seed were inoculated to all treatments except T1, which recommended dose of P – fertilizer (50 kg P2O5 ha-1) were applied to T3 toT8. The results revealed that the significantly maximum number of pods and weight of pods per plant (39.28 plant-1) and 72.33 g) were obtained in applied of GRDF (25:50:00 N:P2O5:K2O kg ha-1 + 10 t FYM ha-1) as compare to rest of the treatments. The T2 was at par with T3 (36.38 plant-1), T5 (38.86 plant-1) and T7 (36.53 plant-1) for number of pods per plant. The treatment GRDF (T2) was at par with treatment T5 (71.33 g) to weight of pods per plant of groundnut. The treatment T2 recorded higher 100 kernel weight (44.75 g) as compare to rest of the treatments. The treatment T2 was noticed significantly higher in dry pod yield (27.75 q ha-1) and dry haulm yield (49.86 q ha-1). The treatment GRDF (T2) was at par with T5 (26.94 q ha-1) regarding dry pod yield of groundnut. The shelling percentage (71.88%) and harvesting index (29.82%) were higher in T2. The application of GRDF recorded the significantly higher oil content (51.10%) and oil yield (1003.33 kg ha-1) over the rest of treatments and GRDF (T2) was at par with T5 regarding oil content (49.95%) and oil yield (945.56 kg ha-1) of groundnut. The significantly higher protein content (29.60%) and protein yield (549.85 kg ha-1) were noticed in T2 which was at par with T5 (27.97%), T7 (27.76%) for protein content and T5 (529.60 kg ha-1) for protein yield of groundnut. It can be concluded from the study for biofertilier treated groundnut seed, application of GRDF (25:50:00 N:P2O5:K2O kg ha-1+ 10 t FYM ha-1) or 100% RDN through vermicompost along with 50 kg P2O5 ha-1 (as SSP) to groundnut recorded higher growth, yield and quality parameters of groundnut.