Abstract
Berry, S. D., P. Dana, V. W. Spaull, and P. Cadet. 2009. Effect of intercropping on nematodes in two small-scale sugarcane farming systems in South Africa. Nematropica 39:11-33. Two trials were planted on sandy soils on small-scale grower farms to study the effect of intercropping on the nematode fauna, soil and plant fertility and sugarcane yield. Peanut (Arachis hypogaea) and sugar bean (Phaseolus limensis) were intercropped between the sugarcane rows in the first trial; velvet bean (Mucuna deeringiana) and sweet potato (Ipomoea batatas) were intercropped in the second trial. These practices were compared to a standard aldicarb (nematicide) treatment and an untreated control. In the first trial (irrigated sugarcane), peanut grew well as an intercrop, however, 70% of the sugar bean died before producing seeds. Intercropping with sugar bean had no effect on initial sugarcane stalk number whereas peanut reduced initial sugarcane stalk number by 30%. In the second trial (non-irrigated sugarcane), both velvet bean and sweet potato grew well as intercrops. Intercropping resulted in initial reduction in sugarcane stalk number of 30% for sweet potato and 70% for velvet bean. However, for both trials, and for all intercrops (except peanut), the sugarcane stalk number at harvest was the same as that of the control. Intercropping with velvet bean, peanut and sweet potato increased Meloidogyne javanica and Pratylenchus zeae infestation of the sugarcane sett roots; conversely, intercropping with sugar bean reduced nematode infestation. Intercropping with velvet bean, sugar bean and sweet potato had no effect on sugarcane yield, whereas intercropping with peanut reduced sugarcane yield by 22% and sucrose yield by 29%. Intercropping with velvet bean increased levels of some nutrients in the soil and leaves of sugarcane. These results show that intercropping can be used by small-scale growers to: manage nematodes (sugar bean), provide nutrients to the sugarcane crop (velvet bean), provide alternative food source and/ or income (sweet potatoes) and to improve the overall productivity of the land without being detrimental to sugarcane cultivation.
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Claims 20
Claim · model-written summary
Peanut grew well as an intercrop.
- Taxon
- sugarcanet0
- Interactor
- peanut
Arachis hypogaeae0other - Outcome
- grew welle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“peanut grew well as an intercrop”
t0“SUGARCANE”
Claim · model-written summary
Seventy percent of sugar bean died before setting seed.
Verbatim
e0“70% of the sugar bean died before producing seeds.”
t0“SUGARCANE”
Claim · model-written summary
Sugar bean intercropping did not affect initial sugarcane stalk number.
- Taxon
- sugarcanet0
- Treatment
- Intercropping with sugar beane0
- Interactor
- sugar beane0other
- Outcome
- initial sugarcane stalk numbere0
- Direction
- no effecte0
Not reportedComparator
Verbatim
e0“Intercropping with sugar bean had no effect on initial sugarcane stalk number”
t0“SUGARCANE”
Claim · model-written summary
Peanut intercropping reduced initial sugarcane stalk number by 30%.
- Taxon
- sugarcanet0
- Treatment
- peanute0
- Interactor
- peanutArachis hypogaeae0other
- Outcome
- initial sugarcane stalk numbere0
- Direction
- reducede0
- Value
- 30%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“peanut reduced initial sugarcane stalk number by 30%.”
t0“SUGARCANE”
Claim · model-written summary
Velvet bean grew well as an intercrop.
- Taxon
- sugarcanet0
- Interactor
- velvet bean
.jpg?width=60)
Mucuna pruriens var. utilise0other - Outcome
- grew well as intercropse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“both velvet bean and sweet potato grew well as intercrops.”
t0“SUGARCANE”
Claim · model-written summary
Sweet potato grew well as an intercrop.
- Taxon
- sugarcanet0
- Interactor
- sweet potato
_Flower.jpg?width=60)
Ipomoea batatase0other - Outcome
- grew well as intercropse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“both velvet bean and sweet potato grew well as intercrops.”
t0“SUGARCANE”
Claim · model-written summary
Sweet potato intercropping initially reduced sugarcane stalk number by 30%.
- Taxon
- sugarcanet0
- Treatment
- sweet potatoe0
- Interactor
- sweet potatoIpomoea batatase0other
- Outcome
- sugarcane stalk numbere0
- Direction
- reductione0
- Value
- 30%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“initial reduction in sugarcane stalk number of 30% for sweet potato”
t0“SUGARCANE”
Claim · model-written summary
Velvet bean intercropping initially reduced sugarcane stalk number by 70%.
- Taxon
- sugarcanet0
- Treatment
- velvet beane0
- Interactor
- velvet beanMucuna pruriens var. utilise0other
- Outcome
- sugarcane stalk numbere0
- Direction
- reductione0
- Value
- 70%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“initial reduction in sugarcane stalk number of 30% for sweet potato and 70% for velvet bean.”
t0“SUGARCANE”
Claim · model-written summary
At harvest, stalk number for intercrops other than peanut equaled the control.
- Taxon
- sugarcanet0
- Treatment
- all intercrops (except peanut)e0
- Outcome
- sugarcane stalk number at harveste0
- Direction
- the samee0
- Comparator
- the controle0
Not reportedInteractor
Verbatim
e0“for all intercrops (except peanut), the sugarcane stalk number at harvest was the same as that of the control.”
t0“SUGARCANE”
Claim · model-written summary
Velvet bean intercropping increased nematode infestation of sugarcane sett roots.
- Taxon
- sugarcanet0
- Treatment
- velvet beane0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicae0pathogen
- Second interactor
- Pratylenchus zeae
Pratylenchus zeaee0pathogen - Outcome
- Meloidogyne javanica and Pratylenchus zeae infestation of the sugarcane sett rootse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping with velvet bean, peanut and sweet potato increased Meloidogyne javanica and Pratylenchus zeae infestation of the sugarcane sett roots”
t0“SUGARCANE”
Claim · model-written summary
Peanut intercropping increased nematode infestation of sugarcane sett roots.
- Taxon
- sugarcanet0
- Treatment
- peanute0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicae0pathogen
- Second interactor
- Pratylenchus zeaePratylenchus zeaee0pathogen
- Outcome
- Meloidogyne javanica and Pratylenchus zeae infestation of the sugarcane sett rootse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping with velvet bean, peanut and sweet potato increased Meloidogyne javanica and Pratylenchus zeae infestation of the sugarcane sett roots”
t0“SUGARCANE”
Claim · model-written summary
Sweet potato intercropping increased nematode infestation of sugarcane sett roots.
- Taxon
- sugarcanet0
- Treatment
- sweet potatoe0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicae0pathogen
- Second interactor
- Pratylenchus zeaePratylenchus zeaee0pathogen
- Outcome
- Meloidogyne javanica and Pratylenchus zeae infestation of the sugarcane sett rootse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping with velvet bean, peanut and sweet potato increased Meloidogyne javanica and Pratylenchus zeae infestation of the sugarcane sett roots”
t0“SUGARCANE”
Claim · model-written summary
Sugar bean intercropping reduced nematode infestation.
- Taxon
- sugarcanet0
- Treatment
- sugar beane0
- Interactor
- sugar beane0other
- Outcome
- nematode infestatione0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“intercropping with sugar bean reduced nematode infestation.”
t0“SUGARCANE”
Claim · model-written summary
Velvet bean, sugar bean and sweet potato intercropping did not affect sugarcane yield.
- Taxon
- sugarcanet0
- Treatment
- velvet bean, sugar bean and sweet potatoe0
- Outcome
- sugarcane yielde0
- Direction
- no effecte0
Not reportedComparator
Verbatim
e0“Intercropping with velvet bean, sugar bean and sweet potato had no effect on sugarcane yield”
t0“SUGARCANE”
Claim · model-written summary
Peanut intercropping reduced sugarcane yield by 22%.
Not reportedComparator
Verbatim
e0“intercropping with peanut reduced sugarcane yield by 22% and sucrose yield by 29%.”
t0“SUGARCANE”
Claim · model-written summary
Peanut intercropping reduced sucrose yield by 29%.
Not reportedComparator
Verbatim
e0“intercropping with peanut reduced sugarcane yield by 22% and sucrose yield by 29%.”
t0“SUGARCANE”
Claim · model-written summary
Velvet bean intercropping increased levels of some nutrients in soil and sugarcane leaves.
- Taxon
- sugarcanet0
- Treatment
- velvet beane0
- Outcome
- levels of some nutrients in the soil and leaves of sugarcanee0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Intercropping with velvet bean increased levels of some nutrients in the soil and leaves of sugarcane.”
t0“SUGARCANE”
Claim · model-written summary
The authors recommend sugar bean intercrops for nematode management.
Verbatim
e0“manage nematodes (sugar bean)”
t0“SUGARCANE”
Claim · model-written summary
The authors recommend velvet bean intercrops to provide nutrients.
Verbatim
e0“provide nutrients to the sugarcane crop (velvet bean)”
t0“SUGARCANE”
Claim · model-written summary
The authors suggest sweet potato intercrops as an alternative food or income source.
Verbatim
e0“provide alternative food source and/ or income (sweet potatoes)”
t0“SUGARCANE”
The same questions in other papers
Ipomoea batatas · yield · Saccharum officinarum (sugarcane)Positive and negative results
2 in the opposite direction
- positive
- positive
Arachis hypogaea · yield · Saccharum officinarum (sugarcane)Positive and negative results
5 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →Mucuna pruriens var. utilis · yield · Saccharum officinarum (sugarcane)Results agree
1 paper in the same direction as this paper
- negative
Arachis hypogaea · quality: sugar starch · Saccharum officinarum (sugarcane)Results agree
2 papers in the same direction as this paper
- no effect
- no effect
intercropping · yield · Saccharum officinarum (sugarcane)Results differ
20 papers in the same direction as this paper · 67 in the opposite direction
- positive
- negative
- positive
84 papers more in this group
See all 88 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.