Abstract
This study reviewed the literature on soil conservation practices and analyzed four case studies in different soil zones and diverse cropping systems of Manitoba (MB), western Canada, to show the potential impacts of no-till/reduced tillage practices on field crop economic performance. Primary and secondary data, such as tillage type, input cost, crop price, crop yield, and net revenue (NR), were used to assess the tillage practices in each of the case studies. Based on crop economic analysis, over 9 years (1998–2006) in southern Manitoba, cereal-based (spring wheat ( Triticum aestivum L.) and barley ( Hordeum vulgare L .)) cropping systems were more profitable under conservation tillage than conventional tillage practices, whereas the opposite was true for oilseed crops (e.g., canola, Brassica napus L.). In plot-scale studies at Portage, MB, low intensity tillage increased NR for soybean ( Glycine max L.) in 1 of 3 years when compared to high intensity tillage, and there appeared to be lower NRs for canola as tillage intensity increased. However, in studies near Brandon, MB, NRs for a 4-year wheat-pea ( Pisum sativum L .) rotation were lower in low disturbance seeding than high disturbance seeding systems for a clay loam soil but similar for a loam soil. While no single tillage system was found to consistently provide the highest NR based on these case studies, these findings provide insights into some of the factors behind decisions surrounding tillage management and the rationale for the continued use of a combination of conventional, reduced, and zero-till systems in the eastern Prairies of Canada.
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Claims 6
Claim · model-written summary
Conservation tillage was more profitable than conventional tillage for wheat and barley cereal systems.
- Taxon
- spring wheat ( Triticum aestivum L.)
Triticum aestivume0 - Treatment
- conservation tillagee0
- Outcome
- profitablee0
- Direction
- more profitablee0
- Comparator
- conventional tillage practicese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cereal-based (spring wheat ( Triticum aestivum L.) and barley ( Hordeum vulgare L .)) cropping systems were more profitable under conservation tillage than conventional tillage practices”
Claim · model-written summary
Conventional tillage was more profitable than conservation tillage for canola oilseed crops.
- Taxon
- canola, Brassica napus L.
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napus.jpg?width=60)
Brassica napus var. napuse0 - Treatment
- conservation tillagee1
- Outcome
- oppositee0
- Comparator
- conventional tillage practicese1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
.jpg?width=500)
Verbatim
e0“whereas the opposite was true for oilseed crops (e.g., canola, Brassica napus L.).”
e1“more profitable under conservation tillage than conventional tillage practices”
Claim · model-written summary
Low intensity tillage increased soybean net revenue in one of three years versus high intensity tillage.
- Taxon
- soybean ( Glycine max L.)
Glycine maxe0 - Treatment
- low intensity tillagee0
- Outcome
- NRe0
- Direction
- increasede0
- Qualifier
- 1 of 3 yearse0
- Comparator
- high intensity tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low intensity tillage increased NR for soybean ( Glycine max L.) in 1 of 3 years when compared to high intensity tillage”
Claim · model-written summary
Canola net revenue appeared lower with increasing tillage intensity.
- Taxon
- canolaBrassica napus var. napuse0
- Treatment
- tillage intensitye0
- Outcome
- NRse0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there appeared to be lower NRs for canola as tillage intensity increased.”
Claim · model-written summary
Wheat pea rotation net revenues were lower with low disturbance seeding on clay loam.
- Taxon
- wheat-pea ( Pisum sativum L .) rotation
Lathyrus oleraceuse0 - Treatment
- low disturbance seedinge0
- Outcome
- NRse0
- Direction
- lowere0
- Qualifier
- clay loam soile0
- Comparator
- high disturbance seeding systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NRs for a 4-year wheat-pea ( Pisum sativum L .) rotation were lower in low disturbance seeding than high disturbance seeding systems for a clay loam soil”
Claim · model-written summary
Wheat pea rotation net revenues were similar across seeding disturbance on loam soil.
- Taxon
- wheat-pea ( Pisum sativum L .) rotationLathyrus oleraceuse1
- Treatment
- low disturbance seedinge1
- Outcome
- NRse1
- Direction
- similare0
- Qualifier
- loam soile0
- Comparator
- high disturbance seeding systemse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but similar for a loam soil.”
e1“NRs for a 4-year wheat-pea ( Pisum sativum L .) rotation were lower in low disturbance seeding than high disturbance seeding systems for a clay loam soil”
The same questions in other 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
- positive
- positive
- negative
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.