Abstract
Variations in survival of winter wheat and in yields of winter wheat, spring wheat, and barley were obtained among rows of power-seeded variety trials where there was differential packing by tractor wheels. This variation makes variety comparisons difficult and introduces bias in single-row-plot and two-row-plot trials. A power seeder with four drive-wheels giving uniform packing of all rows greatly reduced the variation in yield among rows.
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Claims 3
Claim · model-written summary
Winter wheat survival varied among power-seeded trial rows with differential tractor-wheel packing.
- Taxon
- winter wheat
Triticum aestivume0 - Outcome
- survivale0
- Setting
- power-seeded variety trialse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Variations in survival of winter wheat and in yields of winter wheat, spring wheat, and barley were obtained among rows of power-seeded variety trials where there was differential packing by tractor wheels”
Claim · model-written summary
Winter wheat, spring wheat and barley yields varied among power-seeded trial rows with differential packing.
- Taxon
- winter wheat, spring wheat, and barley
.jpg?width=60)
Hordeum vulgareTriticum aestivume0 - Outcome
- yieldse0
- Setting
- power-seeded variety trialse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Variations in survival of winter wheat and in yields of winter wheat, spring wheat, and barley were obtained among rows of power-seeded variety trials where there was differential packing by tractor wheels”
Claim · model-written summary
A four-drive-wheel power seeder greatly reduced yield variation among rows.
Not reportedComparatorValue
Verbatim
e0“A power seeder with four drive-wheels giving uniform packing of all rows greatly reduced the variation in yield among rows”