Claim · model-written summary
At Clarksville, increasing seeding from 38 to 57 seeds/sq ft reduced delay-associated yield loss by 49%.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- seeding rate was increased from 38 to 57 seeds/sq fte0
- Outcome
- yield loss caused by the delaye0
- Direction
- reducede0
- Value
- 49%e0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yield loss caused by the delay was reduced by 49% when seeding rate was increased from 38 to 57 seeds/sq ft”
t0“Optimizing Seeding Rate for Late‐Seeded Winter Wheat in the Middle Atlantic Region”
Title
Optimizing Seeding Rate for Late‐Seeded Winter Wheat in the Middle Atlantic Region
Qi‐Yuan Pan; David J. Sammons; Robert J. Kratochvil jpa 1994. doi:10.2134/jpa1994.0221
Other claims from this paper (14)
- Intervention effect Delayed seeding harmed Florida 302 more than Twain.
- Intervention effect At Beltsville, sowing date and rate had no statistically significant yield effects.
- Intervention effect At Clarksville, planting four to six weeks after fly-free dates yielded significantly less than earlier planting.
- Intervention effect Raising seeding rate from 38 to 57 seeds/sq ft reduced yield loss from the last planting by 40% in regression analysis.
- Intervention effect Delayed seeding reduced spike and plant density.
- Intervention effect A higher seeding rate increased spike and plant density.
- Intervention effect Second sowing dates usually yielded more than first dates.
- Intervention effect Third sowing dates generally had the lowest yields.
- Recommendation For timely seeded wheat, 38 seeds/sq ft was an appropriate rate in the Middle Atlantic Region.
- Intervention effect At Clarksville, 57 seeds/sq ft gave the highest yield for a 23.5-day delay.
- Observation Regression predicted an optimum seeding date of 22 October at Clarksville.
- Observation Regression predicted 55.1 seeds/sq ft as the optimum rate for the third date at Clarksville.
- Observation The predicted best-return seeding rate for the third date was 50.7 seeds/sq ft at Clarksville.
- Recommendation Farmers should use the 10% weekly seeding-rate increase rule cautiously and only within three weeks of the optimum date.