Effect of Biourine on N Uptake and Cabbage (Brassica oleraceae L) Growth on Lowland Ultisol

Abstract

Research on the effect of doses of cattle biourine on plant N levels and growth of cabbage (Brassica oleraceae, L) in lowland Ultisol was carried out by Desa Bakti in Marga Sakti Sebelat District, North Bengkulu Regency in October 2019 to January 2020. This study aimed to determine the dosage of cattle biourine optimal for N levels and cabbage growth in lowland ultisols. This study used a Randomized Complete Block Design (RCBD) of one factor consisting of 4 treatments and 4 replications, with the treatment dose 0 L ha-1, 1500 L ha-1, 3000 L ha-1, and 4500 L ha-1. Observation data were analyzed by Analysis of variance (ANOVA) at ? level of 5% with the Orthogonal Polynomial Test. The results of the study showed that the optimum dosage was not obtained on the variable N levels of plants and soil pH, but had a very significant effect on both of these variables. The optimum dosage obtained on the variable growth and yield of plants includes the optimum dose of 2250 L ha-1 biourine producing an average plant height of 36.14 cm age 45 dap, the optimum dose of 2200 L ha-1 of biourine produces an average plant height of 37.87 cm age 60 dap, optimum dose of biourine 1250 L ha-1 produces an average biomass fresh weigh 1.33 kg, the optimum dose of biourine 1666.67 L ha-1 produces an average head weight of 0.83 kg, and optimum dose of biourine 2000 L ha-1 produces average head diameter of 15.36 cm.

Response Of Papaya (Carica papaya L.) Seeds Growth To The Gibberellin (GA3) and Cow Biourine

“…Biourine contains microbes such as Rumino Bacillus (RB) and Azotobacter (AZBA). The application of liquid biological fertilizers significantly increased the growth and yield of shallots (Purba et al, 2020;Rohman et al, 2020).…”

“…Currently, biourine is an alternative to increase the availability, adequacy, and efficiency of nutrient absorption for plants containing microorganisms so as to reduce the use of inorganic fertilizers. The content of organic matter in biourine can improve soil physical, chemical and biological properties (Rohman et al, 2020). Organic matter plays a role in soil fertility, namely in the process of weathering rocks and in the process of decomposition of soil minerals, plant nutrient sources, forming stable nutrients, and having a direct effect on plant growth and roots.…”