Journal of Smart Agriculture and Environmental Technology
Vol. 1 No. 1 (2023): April 2023: First issued, published, 2023-04-26

Determination of in situ NPK fertilization for rice growth in intensive farming system

Wijaya, Rahmi (Unknown)
Budianta, Dedik (Unknown)



Article Info

Publish Date
30 Apr 2023

Abstract

Rice fields that were intensively cultivated by the application of chemical fertilizers for a long time may experience declining rice production, as the soil ages. Therefore, it is necessary to assess the fertility of the paddy soil for rice cultivation. Site-specific balanced fertilization is determined based on soil test results that represent the in situ soil chemical properties. This study aims to analyze the fertility level of paddy fields and determine the optimal amounts of nitrogen (N), phosphorus (P), and potassium (K) fertilizers for rice growth, considering the soil fertility status in Marga Cinta, Belitang Madang Raya District, Ogan Komering Ulu Timur of South Sumatra, Indonesia. The study employed a random sampling method, with a total of 6 samples collected by drilling at a depth of 0 - 30 cm, and then composited. The results revealed that the fertility of the paddy soil at the study site was relatively low, with an average pH of 5.32, organic carbon content (C-Organic) of 0.67%, cation exchange capacity (CEC) of 9.85 cmol/kg, base saturation of 21.05%, total nitrogen (N-total) of 0.10%, available phosphorus (P-available) of 1.87 mg/kg, and exchangeable potassium (K-exchangeability) of 0.10 cmol/kg. Based on these findings, the recommended fertilization amounts are 199.89 kg/ha of urea, 147.91 kg/ha of SP-36, and 28.45 kg/ha of KCl.

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Journal Info

Abbrev

smartagrienvitech

Publisher

Subject

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science Veterinary

Description

The Journal of Smart Agriculture and Environmental Technology (JOSAET) is an international, interdisciplinary publication committed to addressing current issues in agriculture and environmental sciences. Our mission is to promote sustainable and safe food production practices for the future without ...