Effect of cow manure and increasing the dose of urea fertilizer on the growth of Mustard Greens (Brassica juncea L.)
Keywords:
Cow Manure, Growth, Mustard greens, Urea fertilizerAbstract
Mustard greens (Brassica juncea L.) are beneficial horticultural crops that are easy to cultivate, even at home; however, soil fertility remains a major challenge in their cultivation in Indonesia. Fertilization can improve the physical properties of the soil, enhance its WAPer retention capacity, and increase microbial activity, thus improving soil fertility. Cow manure is chosen for its advantages: it is easy to obtain, and the continuous availability of raw materials (cow dung) makes it convenient for farmers to acquire. The use of organic fertilizers needs to be balanced with the use of inorganic fertilizers. One such inorganic fertilizer is urea, which contains 46% nitrogen, essential for overall plant growth. This study aims to determine the appropriate dosage of cow manure, the correct dosage of urea, and the interaction between cow manure and urea on the growth and yield of mustard greens. The research employs a Randomized Block Design (RBD) with a factorial arrangement involving two factors. The first factor is the application of cow manure at three levels (S0: 0 tons/ha, S1: 15 tons/ha or 2160 g/plot, S2: 20 tons/ha or 2880 g/plot). The second factor is the application of urea at three levels (P0: 0 kg/ha, P1: 150 kg/ha or 2.4 g/plant, P2: 300 kg/ha or 4.8 g/plant). The results showed that giving 20 tons/ha of cow manure is the right dose to increase plant height, number of leaves, leaf area. The single treatment of urea fertilizer and the interaction between the administration of cow manure and urea fertilizer had no significant effect on plant height, number of leaves, and leaf area. The results of the studied indicate that the use of cow manure plays a greater role in supporting the growth of green mustard greens than the application of urea fertilizer.
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