THE EFFECT OF IRRIGATION MANAGEMENT, MUNICIPAL WASTE COPMOST AND NITROGEN FERTILIZER ON SEED YIELD, QUALITY AND SOME PHYSIOLOGICAL TRAITS OF PEANUT (ARACHIS HYPOGAEA L.)

Abstract

Present study was done to investigate the effect of municipal waste compost and nitrogen fertilizer on yield and some physiological traits of peanut under both irrigation and no-irrigation conditions. A split-split plot experiment was conducted based on randomized complete block design with three replications and performed in two years (2018 and 2019). The main plot consisted of irrigation at two levels of with and without irrigation. Compost treatment (at two levels of application of 5 t/ha and no application) was considered as a sub plot. Nitrogen fertilizer (at four levels of 0.0, 20.0, 40.0 and 60.0 kg of pure nitrogen per hectare) was considered as sub-sub plot. The results showed that application of 5 t/ha compost significantly increased carotenoids and rate of kernel production by 16.1% and 15.2%, respectively. In interaction of irrigation and compost, the highest seed protein and seed yield were obtained in two levels of compost and irrigation conditions. In both years, the highest seed yield was observed in the treatments of irrigation and application of 40 and 60 kg N/ha. Besides, the application of compost along with 40 and 60 kg N/ha caused a significant increase in seed yield. In the second year compared to the first year, under no-irrigation and no-application of nitrogen, seed yield was 21% higher. It seems that application of 40 kg/ha N along with 5 t/ha of municipal waste compost in peanut cultivation can be effective in improving the physiological traits and seed yield, especially under no-irrigation.