Abstract
Crop seedling emergence can be inhibited when fertilizer material is placed near the seed. This growth chamber study was conducted to determine the effect of solution N dribbled on the soil surface over the seed row on wheat ( Triticum aestivum L.) and corn ( Zea mays L.) emergence. Emergence was evaluated for three soils having 10, 20, and 30% clay content. Nitrogen (as 32‐0‐0, N‐P‐K, urea ammonium nitrate solution) at 40,80,120, and 160 lb N/acre for wheat, and 0,40,80, and 120 lb N/acre for corn (based on 12‐ and 30‐in. row spacings for wheat and corn, respectively) was dribbled on the soil surface directly over the seed row. The soils were then sprinkler‐irrigated with 0.2,0.4, and 0.6 in. of water for wheat, and 0.3, 0.7, and 1.0 in. of water for corn. Seedling emergence, observed 20 d after planting, decreased in both crops with increasing N rate. Little or no corn emergence was observed in the two coarser textured soils treated with 120 lb N/acre and 0.7‐in. irrigation. With less water applied, the majority of the fertilizer remained above the seed and, therefore, affected germination less. Emergence also improved with more than 0.7 in. of water as the additional water either diluted the fertilizer or moved it below the seed. A maximum reduction in wheat emergence of 80% was observed in the soil with 10% clay when 160 lb N/acre and 0.6 in. of water were applied. Soil clay acted as a buffer and reduced the negative effects of the fertilizer. When using this method of fertilizer N application, maximum rates vary with soil texture but should not exceed 70 to 80 lb/acre and 20 to 50 lb/acre for narrow (12 in.) and wide (30 in.) spaced rows, respectively.
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Claims 8
Claim · model-written summary
Wheat seedling emergence decreased with increasing N rate of surface-banded solution N.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- increasing N ratee0
- Outcome
- Seedling emergencee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedling emergence, observed 20 d after planting, decreased in both crops with increasing N rate”
t0“Wheat and Corn Emergence Inhibition”
Claim · model-written summary
Corn seedling emergence decreased with increasing N rate of surface-banded solution N.
- Taxon
- Corn
Zea mays subsp. mayst0 - Treatment
- increasing N ratee0
- Outcome
- Seedling emergencee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedling emergence, observed 20 d after planting, decreased in both crops with increasing N rate”
t0“Wheat and Corn Emergence Inhibition”
Claim · model-written summary
Little or no corn emergence occurred in the two coarser textured soils treated with 120 lb N/acre and 0.7-in. irrigation.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- 120 lb N/acree0
- Outcome
- corn emergencee0
- Direction
- Little or noe0
- Qualifier
- two coarser textured soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Little or no corn emergence was observed in the two coarser textured soils treated with 120 lb N/acre”
Claim · model-written summary
With less water applied, most of the fertilizer stayed above the seed and therefore affected germination less.
- Taxon
- Wheat and CornTriticum aestivumZea mays subsp. mayst0
- Outcome
- germinatione0
- Qualifier
- majority of the fertilizer remained above the seede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With less water applied, the majority of the fertilizer remained above the seed and, therefore, affected germination less”
t0“Wheat and Corn”
Claim · model-written summary
Emergence improved with more than 0.7 in. of water, as the additional water either diluted the fertilizer or moved it below the seed.
- Taxon
- Wheat and CornTriticum aestivumZea mays subsp. mayst0
- Treatment
- more than 0.7 in. of watere0
- Outcome
- Emergencee0
- Direction
- improvede0
- Qualifier
- additional water either diluted the fertilizer or moved it below the seede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Emergence also improved with more than 0.7 in. of water as the additional water either diluted the fertilizer or moved it below the seed”
t0“Wheat and Corn”
Claim · model-written summary
A maximum reduction in wheat emergence of 80% occurred in the soil with 10% clay at 160 lb N/acre and 0.6 in. of water.
- Taxon
- wheatTriticum aestivume0
- Treatment
- 160 lb N/acre and 0.6 in. of watere0
- Outcome
- wheat emergencee0
- Direction
- maximum reductione0
- Value
- 80%e0
- Qualifier
- soil with 10% claye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A maximum reduction in wheat emergence of 80% was observed in the soil with 10% clay when 160 lb N/acre and 0.6 in. of water were applied”
Claim · model-written summary
Soil clay acted as a buffer and reduced the negative effects of the fertilizer.
- Taxon
- Wheat and CornTriticum aestivumZea mays subsp. mayst0
- Treatment
- Soil claye0
- Outcome
- negative effects of the fertilizere0
- Qualifier
- acted as a buffere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil clay acted as a buffer and reduced the negative effects of the fertilizer”
t0“Wheat and Corn”
Claim · model-written summary
With this fertilizer placement, maximum N rates vary with soil texture but should not exceed 70 to 80 lb/acre for narrow (12 in.) and 20 to 50 lb/acre for wide (30 in.) rows.
- Taxon
- Wheat and CornTriticum aestivumZea mays subsp. mayst0
- Outcome
- maximum ratese0
- Qualifier
- 70 to 80 lb/acre and 20 to 50 lb/acree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum rates vary with soil texture but should not exceed 70 to 80 lb/acre and 20 to 50 lb/acre for narrow (12 in.) and wide (30 in.) spaced rows, respectively”
t0“Wheat and Corn”
The same questions in other papers
nitrogen · growth · Triticum aestivum (wheat)Positive and negative results
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- positive
- positive
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See all 551 papers →nitrogen · growth · Zea mays (maize)Positive and negative results
128 papers in the same direction as this paper · 619 in the opposite direction
- no effect
- negative
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See all 748 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.