Abstract
Soybean is an important commodity needed by people in Indonesian. Soybean production is currently decreasing every year because off decreasing land area. The available land in Indonesia is mostly used by farmers to cultivate crops that have the potential to meet their economic needs, so that very few farmers use their land for soybean crops. This study aimed to determine the adaptation of shade-tolerant soybean varieties to fertilization technology at various levels of shade coconut plant. The research was conducted at Bandar Baru District, Pidie Jaya Regency, Aceh Province on July to October 2019, with split plot design. The main plot is shade (N), namely N1: 0% shade (without shade); N2: 25% shade and N3: 50% shade, and subplot is the fertilizer package (P) namely P1: recommendation (NPK 150 kg ha-1, organic fertilizer 2 t ha-1); P2: specific location (urea 75 kg ha-1, SP-36 100 kg ha-1, KCl 100 kg ha-1). The results showed that the level of shade had no effect on soybean production, while the fertilization factor showed that the highest production was found in the recommended fertilizer package 1.82 t ha-1, different with the specific location fertilizer package.
Highlights
Soybean (Glycine max (L.) Merr) is one of the important food crops in Indonesia which is widely cultivated in paddy fields and dry land
The data on soybean land areas in Aceh in the last 3 years decreased significantly from 37,220 ha in 2015 to 10,025 ha in 2017 which was directly proportional to the decrease in soybean land areas in Pidie Jaya District from 1,293 ha in 2015 to 465 ha in 2017 [2]
The Ministry of Agriculture through the Indonesian Agency for Agricultural Research and Development (IAARD) in December 2014 released two new high yielding varieties of shade tolerant soybeans, suitable for development under plantation stands and agroforestry environments with young plants ( < 4 years), as well as intercropping with other food crops
Summary
Soybean (Glycine max (L.) Merr) is one of the important food crops in Indonesia which is widely cultivated in paddy fields and dry land. This caused local soybeans become a scarce item. The availability of superior soybean varieties that are adaptive to a shade environment will have an impact on reducing yield losses due to shade stress, increasing productivity and farmers' income in shaded areas. The Ministry of Agriculture through the Indonesian Agency for Agricultural Research and Development (IAARD) in December 2014 released two new high yielding varieties of shade tolerant soybeans (up to 50%), suitable for development under plantation stands and agroforestry environments with young plants ( < 4 years), as well as intercropping with other food crops. This study aims to examine the adaptation of shade-tolerant soybean varieties to fertilization technology at various levels of shading
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