Performance of rice paddy varieties under various organic soil fertility strategies

Abstract

Abstract It has been widely known that integrating and adopting sustainable agricultural practices can restore and maintain the health of degraded agricultural land and adapt to climate change. Azolla pinnata and Sesbania rostrata are local potential plants in paddy fields that can be used as green manures. Two paddy varieties were planted. The experiment was conducted as factorial randomized block design, consisting of green manure types (p1 = goat manure 10 t/ha, p2 = goat manure 10 t/ha + Azolla 10 t/ha, p3 = goat manure 10 t/ha + Sesbania 2 t/h, and p4 = goat manure 10 t/ha + Azolla 5 t/ha + Sesbania 1 t/ha) and rice varieties (v1 = Bangir and v2 = Inpari 41). The results indicated that the use of green manure has increased the nitrogen and organic carbon contents in the soil from 0.10% and 0.82% to more than 0.20% and 2.0%, respectively. Inpari 41 variety produced higher grain yield (4.92 t/ha) compared to Bangir variety (3.48 t/ha). These findings indicate that the suitable green manure combined with paddy varieties can improve the resilience of soil health and paddy productivity.