Abstract
Over the last two decades, Rice (Oryza sativa L.)-Maize (Zea mays L.) cropping systems have become one of the most dominant cropping systems in Bangladesh. This has coincided with the expansion in use of two-wheel tractors, which has facilitated options for minimum tillage. A three-year trial examined the prospects of conservation agriculture practices for Rice-Maize cropping in Bangladesh, with respect to minimum tillage and residue retention. Main plot tillage treatments of conventional full tillage, single pass wet tillage in rice (rotated with zero tillage in maize), bed planting and strip tillage were combined with residue retention treatments of 0, 50 and 100% in sub-plots. Compared to conventional tillage, minimum tillage saved 60-66% of fuel and 70-74% of labour required for land preparation. Although minimum tillage reduced the land preparation cost significantly through saving fuel and labour, weed infestation was higher compared to conventional tillage, which influenced the cost of production. Rice seedlings transplanted under unpuddled strip tillage required more time than in conventional or single pass wet tillage due to poor visibility of strips and the hard surface of untilled soil. Bed planting incurred the lowest production cost. Tillage methods and residue treatment produced no significant grain yield differences. Rice grown with single pass wet tillage and maize grown with strip tillage gave the highest gross margin over time. Despite lack of treatment effects on yields, the results suggest that profitability of Rice-Maize cropping could be increased with minimum tillage, provided there is adequate control of weeds by herbicides.Bangladesh Rice j. 2014, 18(1&2): 44-53
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Claims 11
Claim · model-written summary
Minimum tillage saved 60-66% of land preparation fuel.
- Treatment
- minimum tillagee0
- Outcome
- fuele0
- Direction
- savede0
- Value
- 60-66%e0
- Comparator
- conventional tillagee0
Not reportedTaxon
Verbatim
e0“Compared to conventional tillage, minimum tillage saved 60-66% of fuel and 70-74% of labour required for land preparation.”
Claim · model-written summary
Minimum tillage saved 70-74% of land preparation labour.
- Treatment
- minimum tillagee0
- Outcome
- laboure0
- Direction
- savede0
- Value
- 70-74%e0
- Comparator
- conventional tillagee0
Not reportedTaxon
Verbatim
e0“Compared to conventional tillage, minimum tillage saved 60-66% of fuel and 70-74% of labour required for land preparation.”
Claim · model-written summary
Minimum tillage significantly reduced preparation cost.
Not reportedTaxonComparator
Verbatim
e0“Although minimum tillage reduced the land preparation cost significantly through saving fuel and labour”
Claim · model-written summary
Minimum tillage had greater weed infestation, influencing production cost.
Verbatim
e0“Although minimum tillage reduced the land preparation cost significantly through saving fuel and labour, weed infestation was higher compared to conventional tillage, which influenced the cost of production.”
Claim · model-written summary
Unpuddled strip tillage required more rice transplanting time because of poor visibility and hard soil.
- Taxon
- Rice
Oryza sativae0 - Treatment
- unpuddled strip tillagee0
- Outcome
- timee0
- Direction
- moree0
- Qualifier
- poor visibility of strips and the hard surface of untilled soile0
- Comparator
- conventional or single pass wet tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice seedlings transplanted under unpuddled strip tillage required more time than in conventional or single pass wet tillage due to poor visibility of strips and the hard surface of untilled soil.”
Claim · model-written summary
Bed planting incurred the lowest production cost.
Not reportedTaxonComparator
Verbatim
e0“Bed planting incurred the lowest production cost.”
Claim · model-written summary
Tillage and residue treatments did not produce significant rice grain yield differences.
- Taxon
- RiceOryza sativat0
- Treatment
- Tillage methods and residue treatmente0
- Outcome
- grain yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tillage methods and residue treatment produced no significant grain yield differences.”
t0“Rice-Maize”
Claim · model-written summary
Tillage and residue treatments did not produce significant maize grain yield differences.
Zea maysNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tillage methods and residue treatment produced no significant grain yield differences.”
t0“Rice-Maize”
Claim · model-written summary
Rice with single pass wet tillage gave the highest gross margin over time.
- Taxon
- RiceOryza sativae0
- Treatment
- single pass wet tillagee0
- Outcome
- gross margine0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice grown with single pass wet tillage and maize grown with strip tillage gave the highest gross margin over time.”
Claim · model-written summary
Maize with strip tillage gave the highest gross margin over time.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice grown with single pass wet tillage and maize grown with strip tillage gave the highest gross margin over time.”
Claim · model-written summary
Minimum tillage could increase rice-maize profitability if weeds are adequately controlled with herbicides.
Verbatim
e0“the results suggest that profitability of Rice-Maize cropping could be increased with minimum tillage, provided there is adequate control of weeds by herbicides.”
The same questions in other papers
tillage · yield · Oryza sativa (rice)Positive and negative results
586 papers in the same direction as this paper · 115 in the opposite direction · 27 reporting no difference from an alternative
- positive
- positive
- negative
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See all 729 papers →tillage · yield · Zea mays (maize)Positive and negative results
811 papers in the same direction as this paper · 230 in the opposite direction · 57 reporting no difference from an alternative
- no effect
- negative
- no effect
1,095 papers more in this group
See all 1,099 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.