Abstract
Abstract In previous field studies a 46 cm spacing of preplant bands of N and P fertilizer has caused uneven growth of winter wheat ( Triticum aestivum L.), with better growth immediately atop the preplant bands. Narrower spacing of fertilizer bands could improve plant growth uniformity and grain production by winter wheat. The objective of this study was to evaluate N‐P fertilizer band spacing on wheat growth and grain yield. The effect of P band spacing on fertilizer P uptake from a preplant band was studied in the greenhouse with winter wheat. Phosphorus uptake from the fertilizer band was influenced by the lateral distance from the wheat row to the P band at 33 days after planting. By 40 days after planting, however, uptake of fertilizer P was the same from bands placed 0, 10, and 20 cm from the wheat row, while P uptake was significantly less from the band placed 30 cm from the row, apparently due to another row of wheat shielding the fertilizer P from uptake. Field studies consisting of combinations of spacings of preplant bands (25, 38, and 50 cm) and rates of P fertilizer (0,6, 12, and 24 kg/ha), all with 84 kg N/ha, were conducted on winter wheat. All treatments were deep‐placed preplant band applications of liquid ammonium polyphosphate (APP, 10‐15‐0) and anhydrous ammonia (82‐0‐0). Wheat was drilled perpendicular to the direction of the preplant band application. Early season growth of winter wheat increased with increasing P rate and by decreasing the distance between preplant bands. Final grain yield, however, was influenced only by P rate, and not by P band spacing. Plant samples taken from 12.5 cm of drill row centered over the band and 12.5 cm of drill row centered between preplant bands of each treatment indicated differences between those areas in dry matter production, P uptake, spike density, and grain yield due to P rate and band spacing. Thus, more uniform growth resulted from the closer band spacing of 38 and 25 cm which could result in higher grain yields under optimum wheat production conditions.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Early season growth of winter wheat increased with increasing P rate.
- Taxon
- winter wheat
Triticum aestivume1 - Treatment
- P ratee1
- Outcome
- Early season growthe1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Wheat”
e1“Early season growth of winter wheat increased with increasing P rate and by decreasing the distance between preplant bands”
Claim · model-written summary
Early season growth of winter wheat increased with decreasing distance between preplant bands.
- Taxon
- winter wheatTriticum aestivume1
- Treatment
- decreasing the distance between preplant bandse1
- Outcome
- Early season growthe1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Wheat”
e1“Early season growth of winter wheat increased with increasing P rate and by decreasing the distance between preplant bands”
Claim · model-written summary
P rate influenced final grain yield of winter wheat.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- P ratee2
- Outcome
- Final grain yielde2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Wheat”
e2“Final grain yield, however, was influenced only by P rate, and not by P band spacing”
Claim · model-written summary
P band spacing did not change final grain yield of winter wheat.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- P band spacinge2
- Outcome
- Final grain yielde2
- Direction
- no_changeinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Wheat”
e2“Final grain yield, however, was influenced only by P rate, and not by P band spacing”
Claim · model-written summary
Phosphorus uptake from the fertilizer band was influenced by the lateral distance from the wheat row to the P band at 33 days after planting.
- Taxon
- wheatTriticum aestivume3
- Treatment
- lateral distance from the wheat row to the P bande3
- Outcome
- Phosphorus uptake from the fertilizer bande3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Phosphorus uptake from the fertilizer band was influenced by the lateral distance from the wheat row to the P band at 33 days after planting”
Claim · model-written summary
Fertilizer P uptake was the same from bands placed 0, 10 and 20 cm from the wheat row at 40 days after planting.
- Taxon
- wheatTriticum aestivume4
- Treatment
- bands placed 0, 10, and 20 cm from the wheat rowe4
- Outcome
- uptake of fertilizer Pe4
- Direction
- the samee4
- Comparator
- band placed 30 cm from the rowe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Wheat”
e4“By 40 days after planting, however, uptake of fertilizer P was the same from bands placed 0, 10, and 20 cm from the wheat row, while P uptake was significantly less from the band placed 30 cm from the row, apparently due to another row of wheat shielding the fertilizer P from uptake”
Claim · model-written summary
P uptake was significantly less from the band placed 30 cm from the wheat row than from closer bands at 40 days after planting.
- Taxon
- wheatTriticum aestivume4
- Treatment
- band placed 30 cm from the rowe4
- Outcome
- P uptakee4
- Direction
- lesse4
- Comparator
- bands placed 0, 10, and 20 cm from the wheat rowe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Wheat”
e4“By 40 days after planting, however, uptake of fertilizer P was the same from bands placed 0, 10, and 20 cm from the wheat row, while P uptake was significantly less from the band placed 30 cm from the row, apparently due to another row of wheat shielding the fertilizer P from uptake”
Claim · model-written summary
Lower P uptake from the 30 cm band is apparently due to another wheat row shielding the fertilizer P.
- Taxon
- wheatTriticum aestivume4
- Outcome
- P uptakee4
- Qualifier
- another row of wheat shielding the fertilizer P from uptakee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Wheat”
e4“By 40 days after planting, however, uptake of fertilizer P was the same from bands placed 0, 10, and 20 cm from the wheat row, while P uptake was significantly less from the band placed 30 cm from the row, apparently due to another row of wheat shielding the fertilizer P from uptake”
Claim · model-written summary
Samples over and between bands differed in dry matter production, P uptake and spike density due to P rate and band spacing.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- P rate and band spacinge5
- Outcome
- dry matter production, P uptake, spike densitye5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Wheat”
e5“indicated differences between those areas in dry matter production, P uptake, spike density, and grain yield due to P rate and band spacing”
Claim · model-written summary
More uniform growth resulted from the closer band spacing of 38 and 25 cm.
- Taxon
- wheatTriticum aestivume6
- Treatment
- closer band spacing of 38 and 25 cme6
- Outcome
- uniform growthe6
- Direction
- moree6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Wheat”
e6“more uniform growth resulted from the closer band spacing of 38 and 25 cm which could result in higher grain yields under optimum wheat production conditions”
Claim · model-written summary
The closer band spacing of 38 and 25 cm could result in higher grain yields under optimum production conditions.
- Taxon
- wheatTriticum aestivume6
- Treatment
- closer band spacing of 38 and 25 cme6
- Outcome
- grain yieldse6
- Direction
- highere6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Wheat”
e6“more uniform growth resulted from the closer band spacing of 38 and 25 cm which could result in higher grain yields under optimum wheat production conditions”
The same questions in other papers
density · growth · Triticum aestivum (wheat)Positive and negative results
80 papers in the same direction as this paper · 29 in the opposite direction
- no effect
- negative
- no effect
106 papers more in this group
See all 110 papers →phosphorus · growth · Triticum aestivum (wheat)Positive and negative results
157 papers in the same direction as this paper · 34 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- negative
189 papers more in this group
See all 193 papers →density · yield · Triticum aestivum (wheat)Positive and negative results
375 papers in the same direction as this paper · 115 in the opposite direction · 7 reporting no difference from an alternative
- no effect
- no effect
- no effect
494 papers more in this group
See all 498 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.