Hebbara, M.Sindhu B.C.2021-11-232021-11-232017-07https://krishikosh.egranth.ac.in/handle/1/5810178242A field experiment to study the influence of sewage irrigation and NPK levels on yield and quality of green chilli and soil properties was conducted at the Main Agricultural Research Station, UAS, Dharwad during summer 2016. It was laid-out in split-plot design with four main plots viz., S1- Domestic sewage water (DSW); S2- Treated sewage water (TSW); S3- Groundwater (GW) and S4- Domestic sewage water alternated with groundwater (DSW-GW) and five sub-plots viz., F1- Absolute control; F2- 25 % NPK; F3- 50 % NPK; F4- 75 % NPK; F5- 100 % NPK. Growth parameters were significantly higher under DSW + 100 % NPK. Yield (10.47 t ha-1) and yield attributes were significantly higher under DSW + 100 % NPK. Irrigation with DSW + 75 % NPK (9.73 t ha-1) was on par with the former followed by DSW-GW + 100 % NPK (9.18 t ha-1). Quality parameters like total chlorophyll, ascorbic acid, total sugars and total ether extract of chilli fruit were higher under DSW + 100 % NPK which remained on par with DSW + 75 % NPK and DSW-GW + 100 % NPK. Higher N, P, K, S, Fe, Mn, Zn and Cu concentration in chilli fruit and plant and their uptake was observed under DSW + 100 % NPK. Irrigation with DSW improved aggregate stability, reduced BD and increased MWHC. Higher soil available N, P2O5, K2O, S and B were observed under DSW + 100 % NPK. Whereas, higher micronutrient concentration was observed under DSW without fertilizer application. Dehydrogenase activity was higher under DSW + 25% NPK. Higher gross returns (` 5,76,125 ha-1), net returns (` 4,17,607 ha-1) and B:C (4.80) were observed under DSW + 100 % NPK. Chilli irrigated with domestic sewage water, only 75 % NPK was enough underlining a saving of 25 % of inorganic fertilizer.EnglishThesis