Response of seed production of peanut (Arachis hypogaea L.) on different dosages of compound NPK fertilizer and rice straw mulch

Abstract Peanut is an important protein source of agricultural commodity in Indonesia because it has high economic value and plays a strategic role in national food supply. In recent years, peanut production across the country has been declining, so it needs to be improved through various efforts such as intensification, land expansion, and per-land increase.The research was conducted from October 2021 to February 2022 at IP2TP Genteng Banyuwangi, used Factorial Randomized Block Design. The first factor was compound NPK fertilizer dosages, i.e. 200; 300 and 400 kg/ha. The second factor was rice straw mulch dosages, i.e. 0; 3 and 6 ton/ha. Data were analyzed using analysis of variance (ANOVA) followed by Duncan’s Multiple Range Test (DMRT). Compound NPK fertilizer dosages didn’t affect all observation variables. On the other hand, the dose of rice straw mulch had a highly significant effect on plant height at 15 DAP (M2 = 8.99 cm) and 30 DAP (M2 = 22.35 cm). The interaction of compound NPK fertilizers and rice straw mulching doses was associated with branch number 15 DAP (D2M2 = 2.10), pod dry weight per plot (D2M2 = 1.80 kg), and seed production per hectare (D2M2 = 2.48 tons) demonstrated to have a significant impact.