Abstract
Core Ideas: (1) Superficial soil compaction in a no-tillage system. (2) Cultivation of cover crops in succession with annual crops. (3) Soil decompression with cultivation of the predecessor soil cover. (4) Unpacking soil with mechanical chiseling. (5) Biological chiseling with the cover crop effect on the common bean yield. Mechanical soil intervention with a chisel in cover crops (CC) is a promising alternative strategy to minimize superficial compaction of soil in a no-tillage system (NTS) of the Brazilian Cerrado. Thus, the objective of the current study was to evaluate the effects of mechanical chiseling associated with successor and predecessor cover crops on agronomic components and the grain yield of the common bean in NTS for two consecutive years. The experiment was designed in randomized blocks in a 5 × 2 factorial scheme with four replications. The treatments consisted of five cover crops (Cajanus cajan, Crotalaria juncea, Urochloa ruziziensis and Pennisetum glaucum and fallow), associated or not with soil mechanical chiseling. The results indicated that cultivation of C. juncea and U. ruziziensis as cover crops increased the initial and the final plant population and the number of pods plant−1 of the common bean. The cultivation of P. glaucum as a predecessor crop with chiseling was observed with greater shoot dry matter and a greater number of grains pod−1 and plant−1 of the common bean while C. cajan and C. juncea have increased leaf N content in the common bean. The predecessor crops of C. juncea and P. glaucum with chiseling increased the grain yield of the “winter” common bean in succession. Therefore, cultivation of C. juncea and P. glaucum as predecessor crops along with chiseling are considered a sustainable strategy for improving the growth and the yield of successive crops in a no-tillage system of the Brazilian Cerrado.
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Claims 5
Claim · model-written summary
Cultivation of C. juncea and U. ruziziensis as cover crops increased initial and final plant population and pods per plant of common bean.
- Taxon
- common bean
Phaseolus vulgarise1 - Treatment
- C. juncea and U. ruziziensis as cover cropse1
- Outcome
- initial and the final plant population and the number of pods plant−1e1
- Direction
- increasede1
- Setting
- Brazilian Cerradoe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in a no-tillage system (NTS) of the Brazilian Cerrado”
e1“cultivation of C. juncea and U. ruziziensis as cover crops increased the initial and the final plant population and the number of pods plant−1 of the common bean”
Claim · model-written summary
Cultivation of P. glaucum as a predecessor crop with chiseling gave greater shoot dry matter and grain number per pod and per plant of common bean.
- Taxon
- common beanPhaseolus vulgarise2
- Treatment
- cultivation of P. glaucum as a predecessor crop with chiselinge2
- Outcome
- shoot dry matter and a greater number of grains pod−1 and plant−1e2
- Direction
- greatere2
- Setting
- Brazilian Cerradoe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in a no-tillage system (NTS) of the Brazilian Cerrado”
e2“The cultivation of P. glaucum as a predecessor crop with chiseling was observed with greater shoot dry matter and a greater number of grains pod−1 and plant−1 of the common bean”
Claim · model-written summary
C. cajan and C. juncea cover crops increased leaf N content of common bean.
- Taxon
- common beanPhaseolus vulgarise3
- Treatment
- C. cajan and C. junceae3
- Outcome
- leaf N contente3
- Direction
- increasede3
- Setting
- Brazilian Cerradoe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in a no-tillage system (NTS) of the Brazilian Cerrado”
e3“while C. cajan and C. juncea have increased leaf N content in the common bean”
Claim · model-written summary
Predecessor crops of C. juncea and P. glaucum with chiseling increased grain yield of common bean in succession.
- Taxon
- common beanPhaseolus vulgarise1
- Treatment
- predecessor crops of C. juncea and P. glaucum with chiselinge4
- Outcome
- grain yielde4
- Direction
- increasede4
- Setting
- Brazilian Cerradoe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“cultivation of C. juncea and U. ruziziensis as cover crops increased the initial and the final plant population and the number of pods plant−1 of the common bean”
e4“The predecessor crops of C. juncea and P. glaucum with chiseling increased the grain yield”
e0“in a no-tillage system (NTS) of the Brazilian Cerrado”
Claim · model-written summary
Cultivating C. juncea and P. glaucum as predecessor crops with chiseling is considered a sustainable strategy for improving growth and yield of successive crops.
- Taxon
- common beanPhaseolus vulgarise1
- Outcome
- a sustainable strategy for improving the growth and the yield of successive cropse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“cultivation of C. juncea and U. ruziziensis as cover crops increased the initial and the final plant population and the number of pods plant−1 of the common bean”
e5“cultivation of C. juncea and P. glaucum as predecessor crops along with chiseling are considered a sustainable strategy for improving the growth and the yield of successive crops”
The same questions in other papers
Crotalaria juncea · yield · Phaseolus vulgaris (common bean)Results agree
1 paper in the same direction as this paper
- positive
Cenchrus americanus · yield · Phaseolus vulgaris (common bean)Results agree
1 paper in the same direction as this paper
- positive
cover crop · pest · Phaseolus vulgaris (common bean)Positive and negative results
2 in the opposite direction
- no effect
- negative
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.