Abstract
SUMMARY The potential of 3-year-old grazed pastures of Stylosanthes hamata, Chamaecrista rotundifolia and Centrosema pascuorum to contribute to subsequent maize production was investigated in subhumid Nigeria in 1993. All three legume pastures had the ability to give better maize grain yields than native pasture but this was significant only for Stylosanthes hamata and Chamaecrista rotundifolia . For the legume species, maximum yield of maize per kg of N applied was attained at 60 kgN/ha. The subsequent yields of maize could be related to the legume species used, pasture management and the length of the fallow period. Centrosema pascuorum behaved as an annual, and as such there was little legume present after 3 years; crop yield was therefore relatively low. Nevertheless, this species could be useful in 1-year fallow/pasture situations. Maize cropping was economically viable for legume plots only with 60 or 120 kgN/ha and not for native pasture. There were no significant differences in the time required to till or to weed legume pastures as compared with native pasture. Forage legume pastures could also have a positive effect on maize residue yields which represent a fodder resource in addition to the herbage understorey remaining after cropping, the quality of which could be enhanced by the presence of the forage legumes. The use of forage legumes for the promotion of both crop and livestock production in sustainable agricultural systems is discussed. The results of the study are used to highlight the importance of selecting the appropriate legume species, pasture management practices and duration of fallow period in relation to the prevailing farming system to maximize benefits from the legumes.
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Claims 11
Claim · model-written summary
Stylosanthes hamata pasture increased subsequent maize grain yield relative to native pasture.
- Treatment
- Stylosanthes hamatae0
- Outcome
- maize grain yieldse0
- Direction
- bettere0
- Comparator
- native pasturee0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All three legume pastures had the ability to give better maize grain yields than native pasture but this was significant only for Stylosanthes hamata and Chamaecrista rotundifolia .”
Claim · model-written summary
Chamaecrista rotundifolia pasture increased subsequent maize grain yield relative to native pasture.
- Treatment
- Chamaecrista rotundifoliae0
- Outcome
- maize grain yieldse0
- Direction
- bettere0
- Comparator
- native pasturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All three legume pastures had the ability to give better maize grain yields than native pasture but this was significant only for Stylosanthes hamata and Chamaecrista rotundifolia .”
Claim · model-written summary
Centrosema pascuorum pasture gave better maize grain yield than native pasture, without reported significance.
- Treatment
- Centrosema pascuorume1
- Outcome
- maize grain yieldse0
- Direction
- bettere0
- Comparator
- native pasturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All three legume pastures had the ability to give better maize grain yields than native pasture but this was significant only for Stylosanthes hamata and Chamaecrista rotundifolia .”
e1“Centrosema pascuorum behaved as an annual, and as such there was little legume present after 3 years; crop yield was therefore relatively low.”
Claim · model-written summary
For legume pastures, maize yield per unit nitrogen applied peaked at 60 kgN/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For the legume species, maximum yield of maize per kg of N applied was attained at 60 kgN/ha.”
Claim · model-written summary
Subsequent maize yields were related to legume species, pasture management and fallow length.
- Treatment
- legume species used, pasture management and the length of the fallow periode0
- Outcome
- yields of maizee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The subsequent yields of maize could be related to the legume species used, pasture management and the length of the fallow period.”
Claim · model-written summary
Centrosema pascuorum persisted poorly after three years and subsequent crop yield was relatively low.
- Taxon
- Centrosema pascuorum
Centrosema pascuorume0 - Outcome
- little legume presente0
- Direction
- littlee0
- Qualifier
- after 3 yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Centrosema pascuorum behaved as an annual, and as such there was little legume present after 3 years; crop yield was therefore relatively low.”
Claim · model-written summary
Centrosema pascuorum may be useful in one-year fallow or pasture systems.
- Taxon
- Centrosema pascuorumCentrosema pascuorume0
- Outcome
- useful in 1-year fallow/pasture situationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Centrosema pascuorum behaved as an annual, and as such there was little legume present after 3 years; crop yield was therefore relatively low. Nevertheless, this species could be useful in 1-year fallow/pasture situations.”
Claim · model-written summary
Maize cropping on legume plots was economically viable only at 60 or 120 kgN/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize cropping was economically viable for legume plots only with 60 or 120 kgN/ha and not for native pasture.”
Claim · model-written summary
Tillage and weeding time did not differ significantly between legume and native pastures.
Verbatim
e0“There were no significant differences in the time required to till or to weed legume pastures as compared with native pasture.”
Claim · model-written summary
Forage legume pastures may increase maize residue yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Forage legume pastures could also have a positive effect on maize residue yields”
Claim · model-written summary
Selecting legume species, pasture management and fallow duration to match the farming system was recommended.
Verbatim
e0“The results of the study are used to highlight the importance of selecting the appropriate legume species, pasture management practices and duration of fallow period in relation to the prevailing farming system to maximize benefits from the legumes.”
The same questions in other papers
Stylosanthes hamata · yield · Zea mays (maize)Positive and negative results
1 paper in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
- positive
Centrosema pascuorum · yield · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- positive
Chamaecrista rotundifolia · yield · Zea mays (maize)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.