Effect of Soil Test-based Fertiliser Application on Yield and Quality of Chilli (Capsicum annuum L.) and Soil Environment

摘要

Field experiment was conducted during kharif 2011 on a farmer's field in Koliwad (Hubli Taluk) village in northern transitional zone of Karnataka between 15°21' N latitude and 75°24' E longitude and at an altitude of 629 m above mean sea level (amsl). In the soil test crop response dose of 216:116:166 N:P2O5:K2O kg ha~(-1), higher dry fruit yield of chilli was obtained; yield increased from 763 kg ha~(-1) in recommended dose of fertilisers (RDF) of 100 kg N:50 kg P2O5:50 kg K2O to 1257 kg ha~(-1) in STCR-NPK, registering an increase of 39%. The highest ascorbic acid content of 151.3 mg 100g~(-1) was recorded in the STCR-NPK and it was on par with soil test-based N and K2O ± 50% and P ±25% (149.5 mg 100g~(-1)). Soil phosphatase activity (14.12 μg pnp g~(-1) h~(-1)) was significantly higher in the PSB-treated plot which also received N and K2O doses as per KSDA-STL+75% of RDP under medium level of P test values compared to untreated plots.