Abstract
Reduced time and energy seedbed preparation methods were compared with conventional ploughing methods. Maize was sown in the spring followed by winter oats. Cultivation techniques were studied by comparing crop yields from each treatment over identical growth periods. Systems of cultivation were also studied, comparing yields obtained for a full cycle of growth from sowing to sowing thereby allowing for any short fallow period which was an essential part of the conventional ploughing treatments. Total annual yields were also compared. Once‐over, directdrilled, and conventional fallow tillage techniques gave similar maize dry matter yields, all significantly greater than minimum tillage or rotary cultivated techniques. Oats yields showed no difference. On comparing systems, the direct‐drilled, once‐over, and rotary‐cultivated treatments gave highest maize yields. Highest oats yields were obtained from the once‐over and minimum tillage systems. Fallow tillage systems gave least yields of both crops. Highest total yields were obtained after the onceover and direct‐drilled treatments with fallow tillage producing the lowest yield. Split plots used to compare the effects of weeds and no weeds showed that weeds caused yield reductions for all treatments ranging from 6.5% for direct‐drilled to 16.8% for rotary‐cultivated. No energy measurements were taken but the systems claimed to save most fuel, namely direct‐drilling and once‐over cultivation, did so without loss of yield. The trial will be continued indefinitely to study longer term effects.
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Claims 17
Claim · model-written summary
Once-over tillage gave maize dry matter yield above minimum and rotary tillage.
- Treatment
- Once‐overe0
- Outcome
- maize dry matter yieldse0
- Direction
- greatere0
- Comparator
- minimum tillage or rotary cultivated techniquese0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Once‐over, directdrilled, and conventional fallow tillage techniques gave similar maize dry matter yields, all significantly greater than minimum tillage or rotary cultivated techniques”
Claim · model-written summary
Direct drilling gave maize dry matter yield above minimum and rotary tillage.
- Treatment
- directdrillede0
- Outcome
- maize dry matter yieldse0
- Direction
- greatere0
- Comparator
- minimum tillage or rotary cultivated techniquese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Once‐over, directdrilled, and conventional fallow tillage techniques gave similar maize dry matter yields, all significantly greater than minimum tillage or rotary cultivated techniques”
Claim · model-written summary
Conventional fallow tillage gave maize dry matter yield above minimum and rotary tillage.
- Treatment
- conventional fallow tillagee0
- Outcome
- maize dry matter yieldse0
- Direction
- greatere0
- Comparator
- minimum tillage or rotary cultivated techniquese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Once‐over, directdrilled, and conventional fallow tillage techniques gave similar maize dry matter yields, all significantly greater than minimum tillage or rotary cultivated techniques”
Claim · model-written summary
Oats yields did not differ among cultivation techniques.
- Taxon
- Oats
Avena sativae0 - Outcome
- Oats yieldse0
- Direction
- no differencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oats yields showed no difference”
Claim · model-written summary
Direct drilling gave among the highest full-cycle maize yields.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“direct‐drilled, once‐over, and rotary‐cultivated treatments gave highest maize yields”
Claim · model-written summary
Once-over cultivation gave among the highest full-cycle maize yields.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“direct‐drilled, once‐over, and rotary‐cultivated treatments gave highest maize yields”
Claim · model-written summary
Rotary cultivation gave among the highest full-cycle maize yields.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“direct‐drilled, once‐over, and rotary‐cultivated treatments gave highest maize yields”
Claim · model-written summary
Once-over cultivation gave among the highest oats yields.
- Taxon
- oatsAvena sativae0
- Treatment
- once‐overe0
- Outcome
- oats yieldse0
- Direction
- Higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest oats yields were obtained from the once‐over and minimum tillage systems”
Claim · model-written summary
Minimum tillage gave among the highest oats yields.
- Taxon
- oatsAvena sativae0
- Treatment
- minimum tillagee0
- Outcome
- oats yieldse0
- Direction
- Higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest oats yields were obtained from the once‐over and minimum tillage systems”
Claim · model-written summary
Fallow tillage gave the least yields of both crops.
Verbatim
e0“Fallow tillage systems gave least yields of both crops”
e1“Fallow tillage systems gave least yields of both crops”
Claim · model-written summary
Once-over cultivation gave among the highest total yields.
Verbatim
e0“Highest total yields were obtained after the onceover and direct‐drilled treatments”
e1“Fallow tillage systems gave least yields of both crops”
Claim · model-written summary
Direct drilling gave among the highest total yields.
Verbatim
e0“Highest total yields were obtained after the onceover and direct‐drilled treatments”
e1“Fallow tillage systems gave least yields of both crops”
Claim · model-written summary
Fallow tillage gave the lowest total yield.
Verbatim
e0“fallow tillage producing the lowest yield”
e1“Fallow tillage systems gave least yields of both crops”
Claim · model-written summary
Weeds reduced yields under all treatments.
Verbatim
e0“weeds caused yield reductions for all treatments ranging from 6.5% for direct‐drilled to 16.8% for rotary‐cultivated”
e1“Fallow tillage systems gave least yields of both crops”
e2“weeds and no weeds”
Claim · model-written summary
With direct drilling, weeds reduced yield by 6.5%.
Verbatim
e0“weeds caused yield reductions for all treatments ranging from 6.5% for direct‐drilled to 16.8% for rotary‐cultivated”
e1“Fallow tillage systems gave least yields of both crops”
e2“weeds and no weeds”
Claim · model-written summary
With rotary cultivation, weeds reduced yield by 16.8%.
Verbatim
e0“weeds caused yield reductions for all treatments ranging from 6.5% for direct‐drilled to 16.8% for rotary‐cultivated”
e1“Fallow tillage systems gave least yields of both crops”
e2“weeds and no weeds”
Claim · model-written summary
Direct drilling and once-over cultivation avoided yield loss while claiming fuel savings.
Verbatim
e0“direct‐drilling and once‐over cultivation, did so without loss of yield”
e1“Fallow tillage systems gave least yields of both crops”
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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.