Abstract
SUMMARY Trials were established at two sites in 1982 to compare six 2-course rotations, in which barley alternated with feed legumes (pure or mixed with barley), fallow or barley, in partial factorial combination with different N and P fertilizer regimes. This paper summarizes data from the second to the seventh cropping seasons. Barley yielded most after fallow and more after legumes than after barley; but, on the basis of total dry matter production over both courses, barley-legume rotations outyielded barley-fallow and barley-barley rotations. In terms of net nitrogen offtake, which may be taken as a rough measure of feed value, barley-legumes surpassed the other rotations by c . 100% at both sites, whether the comparison was made on values obtained from plots with or without added fertilizer. Of the legumes, Lathyrus sativus was slightly more productive than Vicia saliva , and this carried over into the rotational yield of both dry matter and nitrogen. Rotations involving pure legumes were slightly more productive than those involving legume/barley mixtures. Yields of all crops and rotations varied greatly from year to year depending on rainfall. Those of the barley-fallow rotation were much less variable than those of the barley-barley rotation at the wetter site (323±103 mm), with the barley-legume rotation intermediate; but variability was much greater at the drier site (250±79 mm), with much less difference between rotations. Nevertheless, fertilizer use and rotations including legumes gave a significant yield advantage under the driest conditions.
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Claims 13
Claim · model-written summary
Barley yielded most after fallow.
- Taxon
- Barley
.jpg?width=60)
Hordeum vulgaree1 - Treatment
- after fallowe1
- Outcome
- yielde1
- Direction
- moste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“in which barley alternated with feed legumes”
e1“Barley yielded most after fallow and more after legumes than after barley”
Claim · model-written summary
Barley yielded more after legumes than after barley.
- Taxon
- BarleyHordeum vulgaree1
- Treatment
- after legumese1
- Outcome
- yielde1
- Direction
- moree1
- Comparator
- after barleye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in which barley alternated with feed legumes”
e1“Barley yielded most after fallow and more after legumes than after barley”
Claim · model-written summary
In total dry matter production over both courses, barley-legume rotations outyielded barley-fallow and barley-barley rotations.
- Taxon
- barleyHordeum vulgaree2
- Treatment
- barley-legume rotationse2
- Outcome
- total dry matter productione2
- Direction
- outyieldede2
- Qualifier
- over both coursese2
- Comparator
- barley-fallow and barley-barley rotationse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in which barley alternated with feed legumes”
e2“on the basis of total dry matter production over both courses, barley-legume rotations outyielded barley-fallow and barley-barley rotations”
Claim · model-written summary
Barley-legume rotations surpassed the other rotations in net nitrogen offtake by about 100% at both sites.
- Taxon
- barleyHordeum vulgaree3
- Treatment
- barley-legumese3
- Outcome
- net nitrogen offtakee3
- Direction
- surpassede3
- Value
- c . 100%e3
- Comparator
- the other rotationse3
- Setting
- both sitese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in which barley alternated with feed legumes”
e3“In terms of net nitrogen offtake, which may be taken as a rough measure of feed value, barley-legumes surpassed the other rotations by c . 100% at both sites”
Claim · model-written summary
Lathyrus sativus was slightly more productive than Vicia saliva.
- Taxon
- Lathyrus sativus
Lathyrus sativuse4 - Outcome
- productivee4
- Direction
- moree4
- Comparator
- Vicia salivae4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Lathyrus sativus was slightly more productive than Vicia saliva”
Claim · model-written summary
The productivity advantage of Lathyrus sativus over Vicia saliva carried over into higher rotational yield of dry matter and nitrogen.
- Taxon
- Lathyrus sativusLathyrus sativuse4
- Outcome
- rotational yield of both dry matter and nitrogene5
- Direction
- higherinferrede5
- Comparator
- Vicia salivae4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Lathyrus sativus was slightly more productive than Vicia saliva”
e5“this carried over into the rotational yield of both dry matter and nitrogen”
Claim · model-written summary
Rotations with pure legumes were slightly more productive than rotations with legume/barley mixtures.
- Taxon
- barleyHordeum vulgaree6
- Treatment
- pure legumese6
- Outcome
- productivee6
- Direction
- more productivee6
- Comparator
- legume/barley mixturese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Rotations involving pure legumes were slightly more productive than those involving legume/barley mixtures”
Claim · model-written summary
Yields of all crops and rotations varied greatly from year to year depending on rainfall.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- Yieldse7
- Qualifier
- varied greatly from year to year depending on rainfalle7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in which barley alternated with feed legumes”
e7“Yields of all crops and rotations varied greatly from year to year depending on rainfall”
Claim · model-written summary
At the wetter site, barley-fallow rotation yields were much less variable than barley-barley rotation yields.
- Taxon
- barleyHordeum vulgaree7
- Treatment
- barley-fallow rotatione7
- Outcome
- variablee7
- Direction
- less variablee7
- Qualifier
- 323±103 mme7
- Comparator
- barley-barley rotatione7
- Setting
- wetter sitee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in which barley alternated with feed legumes”
e7“Those of the barley-fallow rotation were much less variable than those of the barley-barley rotation at the wetter site (323±103 mm), with the barley-legume rotation intermediate”
Claim · model-written summary
At the wetter site, barley-legume rotation yields were intermediate in variability.
- Taxon
- barleyHordeum vulgaree7
- Treatment
- barley-legume rotatione7
- Outcome
- variablee7
- Direction
- intermediatee7
- Qualifier
- 323±103 mme7
- Comparator
- barley-barley rotatione7
- Setting
- wetter sitee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in which barley alternated with feed legumes”
e7“Those of the barley-fallow rotation were much less variable than those of the barley-barley rotation at the wetter site (323±103 mm), with the barley-legume rotation intermediate”
Claim · model-written summary
Variability of yields was much greater at the drier site (250±79 mm) with much less difference between rotations.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- variabilitye6
- Direction
- much greatere6
- Qualifier
- much less difference between rotationse6
- Setting
- drier sitee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in which barley alternated with feed legumes”
e6“variability was much greater at the drier site (250±79 mm), with much less difference between rotations”
Claim · model-written summary
Fertilizer use gave a significant yield advantage under the driest conditions.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- fertilizer usee7
- Outcome
- yielde7
- Direction
- advantagee7
- Setting
- driest conditionse7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in which barley alternated with feed legumes”
e7“fertilizer use and rotations including legumes gave a significant yield advantage under the driest conditions”
Claim · model-written summary
Rotations including legumes gave a significant yield advantage under the driest conditions.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- rotations including legumese7
- Outcome
- yielde7
- Direction
- advantagee7
- Setting
- driest conditionse7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in which barley alternated with feed legumes”
e7“fertilizer use and rotations including legumes gave a significant yield advantage under the driest conditions”
The same questions in other papers
rotation · yield · Hordeum vulgare (barley)Positive and negative results
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472 papers in the same direction as this paper · 66 in the opposite direction · 11 reporting no difference from an alternative
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See all 550 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.