Effect of spacing and nutrient management in Naga King Chilli for its quality attributes and soil nutrient status under poly-house condition

The present investigation was conducted at the Vegetable Research Farm College of Horticulture and Forestry, CAU, Pasighat, Arunachal Pradesh in the year 2017- 2018. Where a local landrace genotype from Manipur was collected and the experiment was done in a factorial RBDwith two factors (spacing and Nutrient) i.e. 3 spacing levels S1 (60 cm x 60 cm), S2 (60 cm x 75 cm), S3 (60 cm x 90 cm) and 3 nutrient levels N1 (90:45:45 kg NPK/ha + 20 t FYM/ha), N2 (120:60:60 kg NPK/ha +15 t FYM/ha) and N3 (150:75:75 kg NPK/ha + 10 t FYM/ha) with 3 replication and 9 treatments to study the effect of spacing and nutrient management in Naga King Chilli (Capsicum chinense Jacq.) for its quality attributes and soil nutient status under polyhouse condition. Among the spacing taken the quality attributes like Vitamin-C, capsaicin contents and Dry matter i.e. 84.88(mg/100g), 2.95% and 9.63% respectively, were found maximum spacing S3. Among the nutrient dose, the maximum Vitamin-C, capsaicin and dry matter i.e. 80.24 (mg/100g), 3.02% and 10.17% respectively were found in N3. The TSS ranges were recorded between (3.6 - 4.3) o Brix in Green fruit and (6.4 -7) o Brix in red ripe fruit among the S x N levels treatments. Whereas the interaction effects on S x N levels on fruit quality parameters shows significant result in capsaicin and dry matter but shows non significant in TSS, and vitamin - C. The available NPK in soil after the harvest was significantly influenced by the nutrient levels. Maximum NPK content of 446.00, 58.51 and 348.45 kg/ha in soil was obtained from nutrient level N3 and least NPK content of 379.10, 37.96 and 280.62 kg/ha was obtained from nutrient level N1. Interaction of spacing and nutrient levels did not bring about any significant difference in available nitrogen and potassium content in soil after harvest. While the interaction of spacing and nutrient levels showed significant different in Phosphorus content in the soil. Spacing level S3 and nutrient level N3 obtained the best result.