Abstract
The effects of conservation agriculture (CA) practices on soil properties along with crop yields of rice-based triple cropping systems have not been adequately assessed in Bangladesh. An experiment was conducted at Bangladesh Agricultural Research Institute, Gazipur, Bangladesh from 2009 to 2012 to assess the effects of tillage practices and crop residue retention on soil physical properties, soil organic carbon (SOC) and crop yields in a wheat-mungbean-rice system. Treatments consisted of three tillage practices (MT: minimum tillage; CT: conventional tillage and DT: deep tillage) and eight levels of crop residue management (S0—no residues retention, Sr—retention of 30 cm rice straw, Sm—whole mungbean stover retention, SW—30 cm wheat straw retention, Smr—whole mungbean stover & 30 cm rice straw retention, Srw—30 cm rice & wheat straw retention, Smw—whole mungbean stover & 30 cm wheat straw retention and Swrm—30 cm wheat and rice straw along with whole mungbean stover retention) were applied in split plot design with three replications. Bulk density (BD) and porosity responded positively to MT and increased residue retention of all crops (p > 0.05). Minimum tillage and Swrm also significantly accumulated SOC (p < 0.05; 0.38% higher than DT with no residue retention) and retained soil moisture (p < 0.05). Minimum tillage practice performed better in upland crops (p < 0.05; wheat & mungbean yields) and CT outperformed MT in wetland rice crop (p < 0.05). The grain and straw yields of wheat and rice were also influenced by previous crop residue retentions (p < 0.05). The results, therefore, suggested that increased residue retention with minimum tillage practices improved soil properties and yield of upland crops but with deeper tillage practices consistently maintained wetland rice production.
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Claims 11
Claim · model-written summary
Bulk density and porosity responded positively to minimum tillage (reported as p > 0.05).
- Taxon
- Wheat-Mungbean-Ricet0
- Treatment
- MTe0
- Outcome
- Bulk density (BD) and porositye0
- Direction
- responded positivelye0
Not reportedComparator
Verbatim
e0“Bulk density (BD) and porosity responded positively to MT and increased residue retention of all crops (p > 0.05)”
t0“Wheat-Mungbean-Rice Crop Rotation”
Claim · model-written summary
Bulk density and porosity responded positively to increased residue retention of all crops (reported as p > 0.05).
- Taxon
- Wheat-Mungbean-Ricet0
- Treatment
- increased residue retention of all cropse0
- Outcome
- Bulk density (BD) and porositye0
- Direction
- responded positivelye0
Not reportedComparator
Verbatim
e0“Bulk density (BD) and porosity responded positively to MT and increased residue retention of all crops (p > 0.05)”
t0“Wheat-Mungbean-Rice Crop Rotation”
Claim · model-written summary
Minimum tillage and Swrm residue retention significantly accumulated soil organic carbon, 0.38% higher than deep tillage with no residue retention.
Verbatim
e0“Minimum tillage and Swrm also significantly accumulated SOC (p < 0.05; 0.38% higher than DT with no residue retention) and retained soil moisture (p < 0.05)”
t0“Wheat-Mungbean-Rice Crop Rotation”
Claim · model-written summary
Minimum tillage and Swrm residue retention significantly retained soil moisture.
- Taxon
- Wheat-Mungbean-Ricet0
- Treatment
- Minimum tillage and Swrme0
- Outcome
- soil moisturee0
- Direction
- retainede0
Not reportedComparator
Verbatim
e0“Minimum tillage and Swrm also significantly accumulated SOC (p < 0.05; 0.38% higher than DT with no residue retention) and retained soil moisture (p < 0.05)”
t0“Wheat-Mungbean-Rice Crop Rotation”
Claim · model-written summary
Minimum tillage performed better for wheat yield in upland conditions.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- Minimum tillage practicee0
- Outcome
- yieldse0
- Direction
- bettere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Minimum tillage practice performed better in upland crops (p < 0.05; wheat & mungbean yields)”
t0“Wheat-Mungbean-Rice Crop Rotation”
Claim · model-written summary
Minimum tillage performed better for mungbean yield in upland conditions.
- Taxon
- mungbean
.jpg?width=60)
Vigna radiatat0 - Treatment
- Minimum tillage practicee0
- Outcome
- yieldse0
- Direction
- bettere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Minimum tillage practice performed better in upland crops (p < 0.05; wheat & mungbean yields)”
t0“Wheat-Mungbean-Rice Crop Rotation”
Claim · model-written summary
Conventional tillage outperformed minimum tillage in wetland rice.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CT outperformed MT in wetland rice crop (p < 0.05)”
t0“Wheat-Mungbean-Rice Crop Rotation”
Claim · model-written summary
Grain and straw yields of wheat were influenced by previous crop residue retentions.
- Taxon
- wheatTriticum aestivume0
- Treatment
- previous crop residue retentionse0
- Outcome
- grain and straw yieldse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The grain and straw yields of wheat and rice were also influenced by previous crop residue retentions (p < 0.05)”
t0“Wheat-Mungbean-Rice Crop Rotation”
Claim · model-written summary
Grain and straw yields of rice were influenced by previous crop residue retentions.
- Taxon
- rice
Oryza sativae0 - Treatment
- previous crop residue retentionse0
- Outcome
- grain and straw yieldse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The grain and straw yields of wheat and rice were also influenced by previous crop residue retentions (p < 0.05)”
Claim · model-written summary
The authors suggest that increased residue retention with minimum tillage improved soil properties and yield of upland crops.
Verbatim
e0“increased residue retention with minimum tillage practices improved soil properties and yield of upland crops”
Claim · model-written summary
The authors suggest that deeper tillage practices consistently maintained wetland rice production.
Verbatim
e0“deeper tillage practices consistently maintained wetland rice production”
The same questions in other papers
tillage · yield · Vigna radiata (mung bean)Positive and negative results
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- negative
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See all 81 papers →tillage · yield · Triticum aestivum (wheat)Positive and negative results
1,115 papers in the same direction as this paper · 257 in the opposite direction · 41 reporting no difference from an alternative
- negative
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1,410 papers more in this group
See all 1,414 papers →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.