Growth and Yield of Three Soybean Cultivars on a Combination of Cow Manure and NPK Fertilizers on Sandy Land

Abstract

Food security is an important issue and must be pursued by utilizing all potential resources. Sandy land is a potential resource to be developed as agricultural land due to the decline in fertile land. However, sandy land has a limiting factor for plant growth and yield, namely fertility. This research aimed to determine the effect of cow manure and NPK fertilizer on the growth and yield of three soybean varieties on sandy land. The research was conducted from January to May 2022 on sandy land in Bengkulu. Each experimental plot was arranged based on a randomized block design. The first factor was soybean cultivar, and the second was a combination of cow manure and NPK fertilizer doses. Each treatment was repeated three times. The results showed that the three soybean varieties evaluated showed different characteristics due to genetic diversity. Applying a combination of organic fertilizers in all proportions did not significantly affect the growth and yield of soybeans except for the weight of 100 seeds. NPK fertilizer application showed better growth and yields.