Pengaruh Pemberian Pupuk Bokashi Dan Zeolit Sebagai Bahan Pembenah Tanah Terhadap Ketersediaan Nitrogen Tanah Regosol

Abstract

Regosol has been widely used for agricultural production despite its low nutrient availability and adsorption. This research aimed to know the effects of bokashi and zeolite on the availability of nitrogen (N) in Regosol. The experiment was carried out with a completely randomized 2-factors design. The first factor was bokashi, with three levels: 0 t ha-1 (B0), 20 t ha-1 (B1), and 30 t ha-1 (B2). The second factor was zeolite with three levels: 0 t ha-1 (Z0), 5 t ha-1 (Z1), and 10 t ha-1 (Z2). Each treatment was repeated three times. Each treatment was incubated for 30 days. The parameters before being treated were texture, bulk density, pH H2O, N-totals, C-organic, available N, and CEC in soil, pH H2O, N-totals, available N, and C-organic in bokashi, also CEC in the zeolite. The parameters after being treated were pH H2O, N-totals, C-organic, C/N, available N, and CEC in soil, also leached NH4+ and leached NO3- in water. The data were analyzed with ANOVA followed by the DMRT at a 5% level. The results showed that bokashi significantly affected the available N, pH H2O, N-total, leached NO3-, and CEC, meanwhile zeolite did not significantly affect the available N but significantly affected the N-totals, C/N in soil, and leached NO3-. The combination of bokashi and zeolite did not significantly affect the available N in the soil. The best dose of bokashi increasing available N of Regosol was at a dose of 20 t ha-1 (B1).

Production of Radish Plants (Raphanus sativus) Due to Giving Bokashi and SP-36

“…Hormon tumbuh dapat merangsang sintesa protein dan karbohidrat, sehingga proses pembelahan sel berjalan dengan baik pada umbi tanaman lobak. pH dan P-tersedia meningkat akibat penambahan bahan organik dan pupuk P (Sari et al, 2017). SP-36 yang ditambahkan akan didekomposisi oleh bahan oraganik dan menghasilkan asam-asam organik dan C02 sehingga dapat mengurangi pengikatan P sehingga dapat diserap oleh tanaman hal ini berdampak pada proses pengisian lobak.…”

Sugarcane leaf litter biomass and its effects on increasing sugarcane drought stress tolerance and reducing CO₂ emissions

“…According to Luo and Zhou (2006) and Yulianti et al (2023), the practice of burning litter or sugarcane trash can accelerate the loss of soil organic matter. On the other hand, the practice of not burning sugarcane residue has several advantages, including: increasing soil nutrients, such as nitrogen (N), phosphate (P), potassium (K), calium (Ca), magnesium (Mg), and sulfur (S) due to mineralization (Batubara and Listyarini, 2017); minimizing water pollution and loss of nutrients due to surface runoff; preserving microbial habitats; and increasing soil organic matter content. Another problem caused by global warming and climate change in sugarcane cultivation is drought stress, where sugarcane production requires an optimal water supply according to the phase of the sugarcane crop.…”