Abstract
Mechanical soil intervention with a chisel in cover crops (CCs) is a promising strategy for minimizing the superficial compaction of soil in a no-tillage system (NTS). The objective of this study was to evaluate the effect of mechanical chiseling associated with successive crops and preceding cover crops to assess grain yield and changes in soil chemical properties after rice cultivation for two consecutive years. The experimental design comprised randomized blocks in a 5 × 2 factorial scheme with four replications. The treatments consisted of five cover crops (Cajanus cajan, Crotalaria juncea, Urochloa ruziziensis, Pennisetum glaucum, and fallow), with or without soil mechanical chiseling. Soil samples from the 0–5, 5–10, 10–20, and 20–40 cm layers were collected, and the chemical properties were analyzed after rice cultivation. Under U. ruziziensis, the chemical properties were improved by mechanical scarification; however, the initial acidity increased in the 5–40 cm layer. The cultivation of P. glaucum and C. juncea prior to rice, regardless of scarification, improved the soil chemical properties in the 0–40 cm layer. Mechanical soil scarification and the use of C. cajan as a cover crop increased the grain yield of upland rice by approximately 552 and 1454 and 1330 kg ha−1 compared to the P. glaucum and U. ruziziensis, respectively.
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Claims 6
Claim · model-written summary
Mechanical scarification improved soil chemical properties under U. ruziziensis.
- Taxon
- Rice
Oryza sativat0 - Treatment
- mechanical scarificatione0
- Outcome
- chemical propertiese0
- Direction
- improvede0
- Qualifier
- Under U. ruziziensise0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under U. ruziziensis, the chemical properties were improved by mechanical scarification”
t0“Rice Yield”
Claim · model-written summary
Mechanical scarification under U. ruziziensis increased initial acidity in the 5–40 cm layer.
- Taxon
- RiceOryza sativat0
- Treatment
- mechanical scarificatione0
- Outcome
- initial aciditye0
- Direction
- increasede0
- Qualifier
- 5–40 cm layere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under U. ruziziensis, the chemical properties were improved by mechanical scarification; however, the initial acidity increased in the 5–40 cm layer.”
t0“Rice Yield”
Claim · model-written summary
P. glaucum before rice improved soil chemical properties in the 0–40 cm layer regardless of scarification.
- Taxon
- riceOryza sativae0
- Treatment
- P. glaucume0
- Outcome
- soil chemical propertiese0
- Direction
- improvede0
- Qualifier
- 0–40 cm layere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cultivation of P. glaucum and C. juncea prior to rice, regardless of scarification, improved the soil chemical properties in the 0–40 cm layer.”
Claim · model-written summary
C. juncea before rice improved soil chemical properties in the 0–40 cm layer regardless of scarification.
- Taxon
- riceOryza sativae0
- Treatment
- C. junceae0
- Outcome
- soil chemical propertiese0
- Direction
- improvede0
- Qualifier
- 0–40 cm layere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cultivation of P. glaucum and C. juncea prior to rice, regardless of scarification, improved the soil chemical properties in the 0–40 cm layer.”
Claim · model-written summary
Mechanical soil scarification increased upland rice grain yield.
- Taxon
- riceOryza sativae0
- Treatment
- Mechanical soil scarificatione0
- Outcome
- grain yield of upland ricee0
- Direction
- increasede0
- Value
- 552e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical soil scarification and the use of C. cajan as a cover crop increased the grain yield of upland rice by approximately 552 and 1454 and 1330 kg ha−1 compared to the P. glaucum and U. ruziziensis, respectively.”
Claim · model-written summary
C. cajan cover crop increased upland rice grain yield by approximately 1454 kg ha−1 versus P. glaucum.
- Taxon
- riceOryza sativae0
- Treatment
- C. cajane0
- Outcome
- grain yield of upland ricee0
- Direction
- increasede0
- Value
- 1454 and 1330 kg ha−1e0
- Comparator
- P. glaucume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical soil scarification and the use of C. cajan as a cover crop increased the grain yield of upland rice by approximately 552 and 1454 and 1330 kg ha−1 compared to the P. glaucum and U. ruziziensis, respectively.”
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