Abstract
The agricultural sector currently produces about 18.4% of the total emissions of greenhouse gases that cause climate change. This impact causes a decrease in the quality and quantity of agricultural products such as soybeans. One of the efforts to increase soybean production is by agroforestry systems. This research to examine the response of soybeans to organic fertilizers from various agricultural wastes in a pine-based agroforestry system. The research design used a completely randomized block design with one treatment fertilization with four levels, namely chemical fertilizers; Indigofera tinctoria compost; corn cobs compost; peanut green manure. The type of organic fertilizer affects plant height, total chlorophyll, plant biomass, number of pods planted, and seed yield per hectare. Peanut green manure showed the highest seed yield per hectare at 1.4887 tons.ha−1. The highest plant height in peanut green manure. Meanwhile, with corncob compost, the highest number of pods planted was 14.60 pods. Total chlorophyll reached 1.912931 cd.m−2 in the treatment of corn cobs compost. Chlorophyll a was positively correlated with chlorophyll, while plant fresh weight was positively correlated with seed weight per hectare. Agricultural waste can be used as organic fertilizer supporting soybean growth and yield in pine stands-based agroforestry systems.
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