Abstract
Soybean is one of the most important food commodities in Indonesia and also it has high value. The needs continue to increase each year, but not offset by increased production become an issue that must be addressed. One attempt to increase soybean production is through the cultivation in agroforestry systems through improving the quality of soil fertility. This research aims to study the effect of various doses of litter teak and NPK fertilizer on chemical soil fertility and the potential of soybeans yield in agroforestry systems based teak crops. Experiments using a Randomized Complete Block Design (RCBD) with two factors, namely litter teak doses (0 ton ha-1, 2.500 ton ha-1, 5.000 ton ha-1, 7.500 ton ha-1) and doses of NPK fertilizer (60-60-60 and 60-120-60) on Grobogan soybean varieties. The variables measured were pH, organic matter content, N-total soil, cation exchange capacity (CEC), plant tissue of N, P-total soil, and component production. Data analysis using analysis of variance F-test based on the level of 5% and significantly different variables followed by Tukey’s method level of 5%. The results showed that combination treatment with various doses of teak litter NPK fertilizers can increase total nitrogen content of the soil with the highest yield of 1.69% on S1D2 treatment, but to organic matter, CEC, pH, and total soil P not significant effect. Component of soybean varieties of the highest Grobogan of 0.83 tons ha-1 in the treatment S1D1. The result was still below the average of the national soybean production.
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Claims 4
Claim · model-written summary
Combined teak litter and NPK treatments increased soil total nitrogen, reaching 1.69% under S1D2.
- Taxon
- soybeans
Glycine maxe1 - Treatment
- various doses of teak litter NPK fertilizerse0
- Outcome
- total nitrogen content of the soile0
- Direction
- increasee0
- Value
- 1.69%e0
- Qualifier
- S1D2 treatmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“combination treatment with various doses of teak litter NPK fertilizers can increase total nitrogen content of the soil with the highest yield of 1.69% on S1D2 treatment”
t0“HASIL KEDELAI”
e1“the potential of soybeans yield”
Claim · model-written summary
The treatments did not significantly affect soil organic matter, CEC, pH or total P.
- Taxon
- soybeansGlycine maxe1
- Treatment
- teak litter NPK fertilizerse2
- Outcome
- organic matter, CEC, pH, and total soil Pe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but to organic matter, CEC, pH, and total soil P not significant effect.”
t0“HASIL KEDELAI”
e1“the potential of soybeans yield”
e2“combination treatment with various doses of teak litter NPK fertilizers can increase total nitrogen content of the soil with the highest yield of 1.69% on S1D2 treatment”
Claim · model-written summary
Grobogan soybean yield was highest at 0.83 tons ha-1 under S1D1.
- Taxon
- soybeanGlycine maxe0
- Material
- Grobogane0
- Treatment
- S1D1e0
- Outcome
- Component of soybean varietiese0
- Direction
- higheste0
- Value
- 0.83 tons ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Component of soybean varieties of the highest Grobogan of 0.83 tons ha-1 in the treatment S1D1.”
Claim · model-written summary
The reported soybean result remained below national average production.
- Taxon
- soybeanGlycine maxe0
- Outcome
- resulte0
- Direction
- belowe0
- Comparator
- the average of the national soybean productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The result was still below the average of the national soybean production.”
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