Abstract
SUMMARY A three-year experiment examined the possibility of increasing the cropping intensity of a medium-deep Alfisol (red soil) by using sequential, relay, ratoon or intercropping systems. It was found that a short-season mungbean ( Vigna radiata ) crop could be taken before the commonly-grown castor crop but that castor yields were reduced by the delayed sowing. If the castor was sown after the harvest of mungbean in a sequential system the profits were less than from a sole castor system. Relay-sowing the castor 20 days before the harvest of mungbean gave 9 $US ha −1 greater profit than sole castor, but this is probably not enough to justify the more intensive double crop system. On the other hand a reasonable yield of horsegram ( Macrotyloma uniflorum ) could be produced after an early pearl millet crop, giving a worthwhile extra profit of 21 $US ha −1 compared with sole pearl millet. Ratooning the sorghum gave ratoon yields that averaged only 14% of the first crop, so this system was not considered suitable for these lighter Alfisols. Intercropping systems of pearl millet/groundnut, sorghum/pigeonpea and groundnut/pigeonpea gave average yield increases of 24, 47 and 46%, respectively, compared with both component crops grown separately. Compared with growing only the higher value sole crop, increases in profits were 16, 82 and 120 $US ha −1 for the same three systems, respectively. It is concluded that intercropping systems provide the best opportunity for increasing cropping intensity on medium-deep Alfisols.
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Claims 12
Claim · model-written summary
Delayed sowing after mungbean reduced castor yield.
- Taxon
- castor
Ricinus communise0 - Treatment
- delayed sowinge0
- Outcome
- castor yieldse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“castor yields were reduced by the delayed sowing”
Claim · model-written summary
Sequential castor after mungbean had lower profits than sole castor.
- Taxon
- castorRicinus communise0
- Treatment
- sown after the harvest of mungbeane0
- Outcome
- profitse0
- Direction
- less thane0
- Comparator
- sole castor systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“If the castor was sown after the harvest of mungbean in a sequential system the profits were less than from a sole castor system”
Claim · model-written summary
Relay sowing castor before mungbean harvest gave 9 $US ha −1 more profit than sole castor.
- Taxon
- castorRicinus communise0
- Treatment
- Relay-sowing the castor 20 days before the harvest of mungbeane0
- Outcome
- profite0
- Direction
- greatere0
- Value
- 9 $US ha −1e0
- Comparator
- sole castore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relay-sowing the castor 20 days before the harvest of mungbean gave 9 $US ha −1 greater profit than sole castor”
Claim · model-written summary
Horsegram after early pearl millet yielded a crop and 21 $US ha −1 more profit than sole pearl millet.
- Taxon
- horsegram
Macrotyloma uniflorume0 - Treatment
- after an early pearl millet crope0
- Outcome
- extra profite0
- Direction
- extrae0
- Value
- 21 $US ha −1e0
- Comparator
- sole pearl millete0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a reasonable yield of horsegram ( Macrotyloma uniflorum ) could be produced after an early pearl millet crop, giving a worthwhile extra profit of 21 $US ha −1 compared with sole pearl millet”
Claim · model-written summary
Ratooned sorghum yielded only 14% of the first crop.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ratooning the sorghum gave ratoon yields that averaged only 14% of the first crop”
Claim · model-written summary
Pearl millet with groundnut increased average yield by 24% against the separately grown components.
- Taxon
- pearl millet/groundnut
Arachis hypogaea
Cenchrus americanuse0 - Treatment
- Intercropping systems of pearl millet/groundnute0
- Outcome
- average yielde0
- Direction
- increasese0
- Value
- 24, 47 and 46%e0
- Comparator
- both component crops grown separatelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping systems of pearl millet/groundnut, sorghum/pigeonpea and groundnut/pigeonpea gave average yield increases of 24, 47 and 46%, respectively, compared with both component crops grown separately”
Claim · model-written summary
Sorghum with pigeonpea increased average yield by 47% against the separately grown components.
- Taxon
- sorghum/pigeonpea
Cajanus cajan
Sorghume0 - Treatment
- sorghum/pigeonpeae0
- Outcome
- average yielde0
- Direction
- increasese0
- Value
- 24, 47 and 46%e0
- Comparator
- both component crops grown separatelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping systems of pearl millet/groundnut, sorghum/pigeonpea and groundnut/pigeonpea gave average yield increases of 24, 47 and 46%, respectively, compared with both component crops grown separately”
Claim · model-written summary
Groundnut with pigeonpea increased average yield by 46% against the separately grown components.
- Taxon
- groundnut/pigeonpeaArachis hypogaeaCajanus cajane0
- Treatment
- groundnut/pigeonpeae0
- Outcome
- average yielde0
- Direction
- increasese0
- Value
- 46%e0
- Comparator
- both component crops grown separatelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping systems of pearl millet/groundnut, sorghum/pigeonpea and groundnut/pigeonpea gave average yield increases of 24, 47 and 46%, respectively, compared with both component crops grown separately”
Claim · model-written summary
Pearl millet with groundnut increased profit by 16 $US ha −1 over the higher value sole crop.
- Taxon
- pearl millet/groundnutArachis hypogaeaCenchrus americanuse1
- Treatment
- pearl millet/groundnute1
- Outcome
- profitse0
- Direction
- increasese0
- Value
- 16, 82 and 120 $US ha −1e0
- Comparator
- higher value sole crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with growing only the higher value sole crop, increases in profits were 16, 82 and 120 $US ha −1 for the same three systems, respectively”
e1“Intercropping systems of pearl millet/groundnut, sorghum/pigeonpea and groundnut/pigeonpea”
Claim · model-written summary
Sorghum with pigeonpea increased profit by 82 $US ha −1 over the higher value sole crop.
- Taxon
- sorghum/pigeonpeaCajanus cajanSorghume1
- Treatment
- sorghum/pigeonpeae1
- Outcome
- profitse0
- Direction
- increasese0
- Value
- 82 and 120 $US ha −1e0
- Comparator
- higher value sole crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with growing only the higher value sole crop, increases in profits were 16, 82 and 120 $US ha −1 for the same three systems, respectively”
e1“sorghum/pigeonpea”
Claim · model-written summary
Groundnut with pigeonpea increased profit by 120 $US ha −1 over the higher value sole crop.
- Taxon
- groundnut/pigeonpeaArachis hypogaeaCajanus cajane1
- Treatment
- groundnut/pigeonpeae1
- Outcome
- profitse0
- Direction
- increasese0
- Value
- 120 $US ha −1e0
- Comparator
- higher value sole crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with growing only the higher value sole crop, increases in profits were 16, 82 and 120 $US ha −1 for the same three systems, respectively”
e1“groundnut/pigeonpea”
Claim · model-written summary
The authors concluded intercropping offers the best opportunity to intensify cropping on medium-deep Alfisols.
Verbatim
e0“intercropping systems provide the best opportunity for increasing cropping intensity on medium-deep Alfisols”
The same questions in other papers
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See all 16 papers →Arachis hypogaea · yield · Cenchrus americanus (pearl millet)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
intercropping · yield · Cenchrus americanus (pearl millet)Results differ
46 papers in the same direction as this paper · 11 in the opposite direction · 2 reporting no difference from an alternative
- negative
- negative
- negative
56 papers more in this group
See all 60 papers →8 of 10 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.