Improvement of soil quality using bokashi composting and NPK fertilizer to increase shallot yield on dry land

Abstract

The use of NPK fertilizer and bokashi composting, which is a fermented organic matter combined with microbial stock, have been reported as potential agricultural practices to enhance the farming land and crop production. The aim of this research is to understand the type of bokashi fertilizer and the correct dosage of NPK inorganic fertilizer in improving entisol soil quality and shallot yield in the dry land. The research used the split-plot design, which was divided into two factors. The first factor of the main plot was the bokashi type consisting of two levels: 3 t ha-1 of bokashi compost of Gliricidia sp. tree leaves (B1); and bokashi cow manure 3 t ha-1 (B2). The second factor as the subplot was the NPK inorganic fertilizer dose which were consisted of four levels: without fertilizers (K0), NPK 100 kg ha-1 (K1), NPK 200 kg ha-1 (K2), and NPK 300 kg ha-1 (K3). By combination of these two factors 8 combined treatments with 3 replications totally 24 units were obtained. The result of the research showed that application of 3 t ha-1 bokashi cow manure (B2) coupled with NPK inorganic fertilizer at 200 kg ha-1 (K2) caused a decrease in evaporation of its land and soil temperature, while increase shallot bulb yield compared with other treatments. The analysis of soil and soil microbes showed an increase in soil fertility by elevated levels of C-organic from 0.66 % to 3.28 %, N-fixing bacteria from 27 x 10 5 CFU ml-1 to 47 x10 6 CFU ml-1 and phosphate solubilizing bacteria from 20 x10 3 CFU ml-1 to 90 x10 3 CFU ml-1. The shallot bulb yield increased from 4.79 t ha-1 to 11.74 t ha-1 .

Recovery of Banana Waste-Loss from Production and Processing: A Contribution to a Circular Economy

“…The production process is short and includes many materials such as chicken manure, black earth, ash or coal. Bokashi’s color is grayish, with sand apparency [ 188 ]. Before mixing the ingredients, the waste-loss (including peels and pseudostems) are chopped until obtaining particles of approximately 2 to 5 cm.…”

Growth of Shorea Leprosula Seedlings Prepared in Combo Nursery Technique to Support Mine Reclamation

“…Media tanam tanah : kompos (1:1) dan tanah : kompos (1:2) menghasilkan pertumbuhan tinggi dan diameter semai S. leprosula yang tidak berbeda nyata, akan tetapi kedua perlakuan media tanam tersebut secara nyata lebih tinggi dibandingkan kontrol (tanah : kompos : sekam padi (7:3:1). Tujuan pemberian kompos pada media tanam adalah meningkatkan unsur hara, memperbaiki sifat fisik tanah sehingga tanah menjadi subur, gembur, dan mudah diolah dimana fungsi tersebut tidak bisa digantikan oleh pupuk buatan (Lasmini et al, 2018 Keterangan: Angka pada baris yang diikuti huruf yang sama menunjukkan tidak berbeda nyata pada taraf uji 5 % Pertumbuhan tanaman didefinisikan sebagai pertambahan volume dan massa tanaman dengan atau tanpa pembentukan sruktur baru seperti organ, sel atau organel sel yang erat hubungannya terhadap perkembangan dan reproduksi (Brukhin & Morozova, 2011). Hasil rata-rata pertambahan tinggi dan diameter menunjukkan bahwa secara umum media tanam tanah : kompos (1:1) dapat meningkatkan pertumbuhan tinggi dan diameter sebesar 69,95 % dan 21,21 %, sedangkan persentase peningkatan dari media tanam tanah : kompos (1:2) adalah sebesar 79,82 % dan 30,30 %.…”

Effect of bokashi improved with rock phosphate on parsley cultivation under organic greenhouse management

“…Soil with adequate amounts of OM, and the precise addition of N, P, and K, is transformed into increased chlorophyll content (Lasmini et al, 2018;Contreras et al, 2019). Tuncay (2011) and Soltangheisi et al (2013) indicate that increases in chlorophyll can be related to higher absorption of N and P given the larger fertilizer rates.…”