What type of study is this?

This is a Human Clinical Trial study (also classified as: Animal Study, In Vitro Study, Case Report, Literature Review, RCT, Phase 2).

August 17, 2025

The Effect of Biochar-Silica and N, P, K Fertilization on Soil pH, Silica Content, Phosphorus Uptake, and Rice Yield in Inceptisols

Puntos clave

Biochar-silica combination significantly increased rice yield components, such as grain weight and panicle length, while phosphorus availability also improved.
The optimal treatment involved 2.5 t ha⁻¹ biochar, 320 kg ha⁻¹ silica, and specific NPK fertilizers, achieving 3.37 kg of dry grain yield per plot.
Soil pH remained largely unchanged despite improvements in soil silica and phosphorus levels, highlighting a complex interaction in nutrient dynamics.
The study's findings suggest biochar-silica can combat soil degradation effects on rice cultivation, though further research is needed on phosphorus uptake.

Resumen

Rice is a major commodity in Indonesia, but its production in 2023 decreased by 645.09 thousand tons compared to the previous year, partly due to intensive land use leading to soil degradation. Biochar is a soil amendment that can improve soil properties and enhance nutrient retention. Silica plays a crucial role in rice cultivation, particularly in addressing issues related to acidic soil pH. This study aimed to evaluate the effects of a biochar-silica combination derived from rice husk waste and N, P, K fertilizers on soil pH, silica content, phosphorus uptake, and to determine the optimal dosage for achieving the highest rice yield in Inceptisols. The experiment was conducted from October 2024 to January 2025 at the KTNT experimental field using a Randomized Block Design (RBD) with 10 treatments and 3 replications, totaling 30 experimental plots. The combination of biochar-silica and N, P, K fertilizers significantly increased available phosphorus content, soil silica levels, and rice yield components, including panicle length, number of panicles, grains per panicle, straw weight per plot, 1,000-grain weight, harvested dry grain, and milled dry grain. However, it had no significant effect on soil pH or phosphorus uptake by plants. The optimal treatment—biochar (2.5 t ha⁻¹), silica (320 kg ha⁻¹), and N, P, K fertilizers (175 kg ha⁻¹ urea, 25 kg ha⁻¹ SP-36, and 25 kg ha⁻¹ KCl)—resulted in the highest harvested dry grain yield of 3.37 kg per plot.

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Cite This Study

Sofyan et al. (Thu,) studied this question.

synapsesocial.com/papers/68a36dd20a429f7973330c7b https://doi.org/https://doi.org/10.55677/ijlsar/v04i04y2025-03

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