Abstract
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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Claims 8
Claim · model-written summary
The combination increased available phosphorus in soil.
- Treatment
- biochar-silica and N, P, K fertilizerse0
- Outcome
- available phosphorus contente0
- Direction
- increasede0
Not reportedTaxonComparator
Verbatim
e0“The combination of biochar-silica and N, P, K fertilizers significantly increased available phosphorus content”
Claim · model-written summary
The combination increased soil silica levels.
Not reportedTaxonComparator
Verbatim
e0“The combination of biochar-silica and N, P, K fertilizers significantly increased available phosphorus content, soil silica levels”
Claim · model-written summary
The combination increased rice yield components.
- Taxon
- rice
Oryza sativae0 - Treatment
- biochar-silica and N, P, K fertilizerse0
- Outcome
- panicle length, number of panicles, grains per paniclee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
Claim · model-written summary
The combination increased straw weight, thousand-grain weight and harvested grain.
- Taxon
- riceOryza sativae0
- Treatment
- biochar-silica and N, P, K fertilizerse0
- Outcome
- straw weight per plot, 1,000-grain weight, harvested dry graine0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
Claim · model-written summary
The combination increased milled dry grain.
- Taxon
- riceOryza sativae0
- Treatment
- biochar-silica and N, P, K fertilizerse0
- Outcome
- milled dry graine0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
Claim · model-written summary
The combination had no significant effect on soil pH.
Not reportedTaxonComparator
Verbatim
e0“However, it had no significant effect on soil pH or phosphorus uptake by plants”
e1“biochar-silica and N, P, K fertilizers”
Claim · model-written summary
The combination had no significant effect on plant phosphorus uptake.
- Taxon
- RiceOryza sativat0
- Treatment
- Biochar-Silica and N, P, K Fertilizationt0
- Outcome
- phosphorus uptake by plantse0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, it had no significant effect on soil pH or phosphorus uptake by plants”
t0“Biochar-Silica and N, P, K Fertilization on Soil pH, Silica Content, Phosphorus Uptake, and Rice Yield”
Claim · model-written summary
The stated optimal treatment gave the highest harvested dry grain yield of 3.37 kg per plot.
- Taxon
- RiceOryza sativat0
- 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)e0
- Outcome
- harvested dry grain yielde0
- Direction
- higheste0
- Value
- 3.37 kg per plote0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
t0“Rice”
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See all 45 papers →8 of 22 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.