Abstract
Sunflower seed yields can be increased by applying nitrogen fertilizer on many non-fallow soils. The amount of nitrogen fertilizer required depends on the yield goal and amount of soil test nitrate-N in the soil at planting time. Information is presented on response data of oil-type sunflower seed yield, oil concentration and oil yield to applied fertilizer and soil nitrogen at 23 locations.
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Claims 2
Claim · model-written summary
Nitrogen fertilizer can increase sunflower seed yields on many non-fallow soils.
- Taxon
- Sunflower
Helianthus annuuse0 - Treatment
- applying nitrogen fertilizere0
- Outcome
- Sunflower seed yieldse0
- Direction
- increasede0
- Setting
- non-fallow soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sunflower seed yields can be increased by applying nitrogen fertilizer on many non-fallow soils.”
Claim · model-written summary
The nitrogen fertilizer requirement depends on yield goal and soil test nitrate-N at planting.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- soil test nitrate-Ne0
- Outcome
- amount of nitrogen fertilizer requirede0
- Qualifier
- yield goale0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The amount of nitrogen fertilizer required depends on the yield goal and amount of soil test nitrate-N in the soil at planting time.”
t0“Sunflower”
The same questions in other papers
fertilization · yield · Helianthus annuus (common sunflower)Positive and negative results
343 papers in the same direction as this paper · 18 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- positive
- no effect
361 papers more in this group
See all 365 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.