Abstract
Abstract Placement of fertilizer in relation to the seed of most agronomic crops has been studied extensively. Limited information is available concerning the placement of fertilizer for soybeans. Fertilizer treatments consisting of banded starter, starter in contact with the seed, and a combination of banded and seed placement were superimposed on broadcast fertilizer treatments at three locations. Responses varied depending on environmental factors. With low rainfall and a low soil test P level, the largest response was from broadcast fertilizer. Starter fertilizer had less effect on seed yields either with or without broadcast fertilizer even though both starter and broadcast effects were significant. With adequate rainfall and a low P level, the largest response was to combinations of starter and broadcast fertilizer. Yields were increased by as much as 746, 598, and 941 kg/ha with band, seed placement and broadcast treatments, respectively. When P and K levels were very high, no yield increases were obtained from any fertilizer placement. In fact, seed placement without broadcast or seed placement and/or band in combination with broadcast decreased yields significantly in many cases. Three soybean [ Glycine max (L.) Merrill] varieties were used at each location and the responses were different depending on varieties. The largest yield increases were obtained with ‘Corsoy’ and ‘Hark’ varieties.
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Claims 11
Claim · model-written summary
With low rainfall and low soil P, broadcast fertilizer gave the largest soybean seed yield response.
- Taxon
- Soybeans
Glycine maxt0 - Treatment
- broadcast fertilizere0
- Outcome
- largest responsee0
- Direction
- largeste0
- Setting
- low rainfall and a low soil test P levele0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With low rainfall and a low soil test P level, the largest response was from broadcast fertilizer”
t0“Soybeans”
Claim · model-written summary
Starter fertilizer had a smaller but significant seed yield effect than broadcast fertilizer under low rainfall and low soil P.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- Starter fertilizere0
- Outcome
- seed yieldse0
- Direction
- lesse0
- Comparator
- broadcast fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Starter fertilizer had less effect on seed yields either with or without broadcast fertilizer even though both starter and broadcast effects were significant”
t0“Soybeans”
Claim · model-written summary
With adequate rainfall and low P, combinations of starter and broadcast fertilizer gave the largest response.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- combinations of starter and broadcast fertilizere0
- Outcome
- largest responsee0
- Direction
- largeste0
- Setting
- adequate rainfall and a low P levele0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With adequate rainfall and a low P level, the largest response was to combinations of starter and broadcast fertilizer”
t0“Soybeans”
Claim · model-written summary
Band fertilizer placement increased yield by as much as 746 kg/ha.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields were increased by as much as 746, 598, and 941 kg/ha with band, seed placement and broadcast treatments, respectively”
t0“Soybeans”
Claim · model-written summary
Seed fertilizer placement increased yield by as much as 598 kg/ha.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields were increased by as much as 746, 598, and 941 kg/ha with band, seed placement and broadcast treatments, respectively”
t0“Soybeans”
Claim · model-written summary
Broadcast fertilizer increased yield by as much as 941 kg/ha.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- broadcast treatmentse0
- Outcome
- Yieldse0
- Direction
- increasede0
- Value
- 941 kg/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields were increased by as much as 746, 598, and 941 kg/ha with band, seed placement and broadcast treatments, respectively”
t0“Soybeans”
Claim · model-written summary
At very high P and K levels, fertilizer placement did not increase soybean yield.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- any fertilizer placemente0
- Outcome
- yield increasese0
- Direction
- no yield increasese0
- Setting
- P and K levels were very highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When P and K levels were very high, no yield increases were obtained from any fertilizer placement”
t0“Soybeans”
Claim · model-written summary
At very high P and K, seed placement without broadcast or with broadcast and/or band significantly decreased yields in many cases.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- seed placemente0
- Outcome
- yieldse0
- Direction
- decreasede0
- Qualifier
- in many casese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed placement without broadcast or seed placement and/or band in combination with broadcast decreased yields significantly in many cases”
t0“Soybeans”
Claim · model-written summary
Soybean varieties differed in their yield responses to fertilizer placement.
- Taxon
- soybeanGlycine maxe0
- Outcome
- responses were different depending on varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Three soybean [ Glycine max (L.) Merrill] varieties were used at each location and the responses were different depending on varieties”
Claim · model-written summary
Corsoy had among the largest yield increases.
- Taxon
- SoybeansGlycine maxt0
- Material
- Corsoye0
- Outcome
- yield increasese0
- Direction
- largeste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The largest yield increases were obtained with ‘Corsoy’ and ‘Hark’ varieties”
t0“Soybeans”
Claim · model-written summary
Hark had among the largest yield increases.
- Taxon
- SoybeansGlycine maxt0
- Material
- Harke0
- Outcome
- yield increasese0
- Direction
- largeste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The largest yield increases were obtained with ‘Corsoy’ and ‘Hark’ varieties”
t0“Soybeans”
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1,020 papers in the same direction as this paper · 155 in the opposite direction · 16 reporting no difference from an alternative
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See all 1,192 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.