Abstract
Results are reported of sixteen replicated experiments on spring-sown barley and oats in south-east England to compare fertilizer sown in the drills with fertilizer broadcast. In thirteen of the experiments, fertilizer in the drills gave significantly greater yields of grain and straw than fertilizer broadcast, in two of the experiments the differences between the two were not significant; in only one experiment was the grain yield significantly greater where the fertilizer was broadcast. Fertilizers were twice as effective when sown in the drills as when broadcast. On an average, broadcast fertilizer increased the yields of grain and straw by 4·0 and 6·3 cwt. per acre respectively. Drilling the fertilizer with the seed gave over double these increases, viz. 8·0 cwt. grain and 14·6 cwt. straw per acre. Drilling the fertilizer with the seed tended to delay brairding. The crop on the fertilizer-drilled plots soon caught up and overtook that on the fertilizer-broadcast plots. Drilling the fertilizer with the seed increased tillering and decreased weed-growth. Not more than about 3 cwt. of a soluble fertilizer per acre should be sown in the drills or the stand of plant may be poor. For the same amounts of soluble plant food, the higher the analysis of the fertilizer the less is the delay in brairding. The possibility of obviating the delay in brairding by sowing the fertilizer near, but not in contact with, the seed is briefly considered.
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Claims 14
Claim · model-written summary
Drilled fertilizer significantly increased grain and straw yields in 13 experiments.
- Taxon
- barley and oats
Avena sativa.jpg?width=60)
Hordeum vulgaree7 - Treatment
- fertilizer in the drillse0
- Outcome
- yields of grain and strawe0
- Direction
- greatere0
- Value
- thirteene0
- Comparator
- fertilizer broadcaste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e7“spring-sown barley and oats”
e0“In thirteen of the experiments, fertilizer in the drills gave significantly greater yields of grain and straw than fertilizer broadcast”
Claim · model-written summary
Two experiments found no significant difference between placements.
- Taxon
- barley and oatsAvena sativaHordeum vulgaree7
- Outcome
- differences between the twoe0
- Value
- twoe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“spring-sown barley and oats”
e0“in two of the experiments the differences between the two were not significant”
Claim · model-written summary
Broadcast fertilizer significantly increased grain yield in one experiment.
- Taxon
- barley and oatsAvena sativaHordeum vulgaree7
- Treatment
- fertilizer was broadcaste0
- Outcome
- grain yielde0
- Direction
- greatere0
- Value
- one experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“spring-sown barley and oats”
e0“in only one experiment was the grain yield significantly greater where the fertilizer was broadcast”
Claim · model-written summary
Drilled fertilizer was twice as effective as broadcast fertilizer.
- Taxon
- barley and oatsAvena sativaHordeum vulgaree7
- Treatment
- sown in the drillse0
- Outcome
- effectivee0
- Direction
- twice as effectivee0
- Value
- twicee0
- Comparator
- broadcaste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“spring-sown barley and oats”
e0“Fertilizers were twice as effective when sown in the drills as when broadcast”
Claim · model-written summary
Broadcast fertilizer increased grain yield by 4·0 cwt. per acre.
- Taxon
- barley and oatsAvena sativaHordeum vulgaree7
- Treatment
- broadcast fertilizere0
- Outcome
- yields of graine0
- Direction
- increasede0
- Value
- 4·0e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“spring-sown barley and oats”
e0“broadcast fertilizer increased the yields of grain and straw by 4·0 and 6·3 cwt. per acre respectively”
Claim · model-written summary
Broadcast fertilizer increased straw yield by 6·3 cwt. per acre.
- Taxon
- barley and oatsAvena sativaHordeum vulgaree7
- Treatment
- broadcast fertilizere0
- Outcome
- strawe0
- Direction
- increasede0
- Value
- 6·3 cwt. per acree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“spring-sown barley and oats”
e0“broadcast fertilizer increased the yields of grain and straw by 4·0 and 6·3 cwt. per acre respectively”
Claim · model-written summary
Drilled fertilizer increased grain yield by 8·0 cwt. per acre.
- Taxon
- barley and oatsAvena sativaHordeum vulgaree7
- Treatment
- Drilling the fertilizer with the seede0
- Outcome
- graine0
- Direction
- increasese0
- Value
- 8·0 cwt. graine0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“spring-sown barley and oats”
e0“Drilling the fertilizer with the seed gave over double these increases, viz. 8·0 cwt. grain and 14·6 cwt. straw per acre”
Claim · model-written summary
Drilled fertilizer increased straw yield by 14·6 cwt. per acre.
- Taxon
- barley and oatsAvena sativaHordeum vulgaree7
- Treatment
- Drilling the fertilizer with the seede0
- Outcome
- strawe0
- Direction
- increasese0
- Value
- 14·6 cwt. straw per acree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“spring-sown barley and oats”
e0“Drilling the fertilizer with the seed gave over double these increases, viz. 8·0 cwt. grain and 14·6 cwt. straw per acre”
Claim · model-written summary
Drilling fertilizer tended to delay brairding.
- Taxon
- barley and oatsAvena sativaHordeum vulgaree7
- Treatment
- Drilling the fertilizer with the seede0
- Outcome
- brairdinge0
- Direction
- delaye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“spring-sown barley and oats”
e0“Drilling the fertilizer with the seed tended to delay brairding”
Claim · model-written summary
Fertilizer-drilled crops caught up with and overtook broadcast crops.
- Taxon
- barley and oatsAvena sativaHordeum vulgaree7
- Treatment
- fertilizer-drilled plotse0
- Outcome
- caught up and overtooke0
- Direction
- overtooke0
- Comparator
- fertilizer-broadcast plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“spring-sown barley and oats”
e0“The crop on the fertilizer-drilled plots soon caught up and overtook that on the fertilizer-broadcast plots”
Claim · model-written summary
Drilling fertilizer increased tillering.
- Taxon
- barley and oatsAvena sativaHordeum vulgaree7
- Treatment
- Drilling the fertilizer with the seede0
- Outcome
- tilleringe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“spring-sown barley and oats”
e0“Drilling the fertilizer with the seed increased tillering and decreased weed-growth”
Claim · model-written summary
Drilling fertilizer decreased weed growth.
- Taxon
- barley and oatsAvena sativaHordeum vulgaree7
- Treatment
- Drilling the fertilizer with the seede0
- Interactor
- weede0weed
- Outcome
- weed-growthe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“spring-sown barley and oats”
e0“Drilling the fertilizer with the seed increased tillering and decreased weed-growth”
Claim · model-written summary
More than about 3 cwt. soluble fertilizer per acre in drills risks poor plant stands.
- Taxon
- barley and oatsAvena sativaHordeum vulgaree7
- Outcome
- Not more than about 3 cwt. of a soluble fertilizer per acre should be sown in the drillse0
- Value
- 3 cwt.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“spring-sown barley and oats”
e0“Not more than about 3 cwt. of a soluble fertilizer per acre should be sown in the drills or the stand of plant may be poor”
Claim · model-written summary
Higher fertilizer analysis reduced the delay in brairding at equal nutrient amounts.
- Taxon
- barley and oatsAvena sativaHordeum vulgaree7
- Treatment
- fertilizere0
- Outcome
- delay in brairdinge0
- Direction
- lesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“spring-sown barley and oats”
e0“For the same amounts of soluble plant food, the higher the analysis of the fertilizer the less is the delay in brairding”
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See all 14 papers →8 of 12 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.