Application of cow urine fertilizers to increase the growth and yield of mustard plants (Brassica rapa L.)

Paiman, Prodi Agroteknologi, Fakultas Pertanian, UPY (2022) Application of cow urine fertilizers to increase the growth and yield of mustard plants (Brassica rapa L.). Res. Crop. 23 (3) : 566-573 (2022).

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Abstract

Mustard plant is one of the main types of vegetables widely consumed in Indonesia. Synthetic fertilizers are always used to increase crop productivity and add environmental residue. Using cow urine is one of the zero waste applications in agriculture. This research aims to know the optimum concentration of cow urine on the growth and yield of mustard. This research was conducted from May 2021 to November 2021 in Olobojo Village, Sigi Biromaru Subdistrict, Sigi Regency, Central Sulawesi, Indonesia. The experiment was arranged in a randomized complete block design with three replications. The treatment of cow urine concentration consisted of five levels, namely 0, 20, 40, 60, and 80%. In this study, 15 plots were needed. For each plot of the experiment, there were 84 plants. The experiment results showed that the application of cow urine affected the growth and yield of mustard plants. Applying cow urine can increase leaf area, plant dry weight, net assimilation rate (NAR), crop growth rate (CGR), relative growth rate (RGR), and harvest yield. The application of 80% cow urine concentration provided the mustard harvest yield higher than other treatments. The study findings that the application of cow urine has not reached the optimum concentration for the mustard plant in inceptisol soils. We recommend that the application of cow urine with a concentration higher than 80% is required in mustard cultivation.

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