Abstract
Maize is grown as a rainfed crop during wet and dry seasons in Lampung, Indonesia and gives low yield. This study was conducted to determine the effects of intercropping with grasses and tillage practices on soil physical properties and grain yield in the wet season. Three tillage methods i.e. no tillage, conventional tillage and deep tillage and four cropping patterns; sole maize, maize intercropped with clump grass (Vetiveria zizanoides), elephant grass (Pennisetum purpureum), and lemon grass (Cymbopogon citratus) were tested. Both conventional and deep tillage increased yield components and harvest index of maize compared to no tillage, but grain yield remained unchanged among cropping patterns. Deep tillage maintained lower bulk density and greater porosity and organic C in deep soils than conventional and no tillage. Maize intercropped with clump grass decreased bulk density and increased porosity and organic C compared to other cropping patterns. This enhanced the soil capacity to store and mobilizes water and nutrients in deep soil profiles, which is likely to enhance growth and yield of the succeeding maize crop.
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Claims 8
Claim · model-written summary
Conventional tillage increased maize yield components and harvest index relative to no tillage.
- Treatment
- conventionale0
- Outcome
- yield components and harvest indexe0
- Direction
- increasede0
- Comparator
- no tillagee0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both conventional and deep tillage increased yield components and harvest index of maize compared to no tillage”
Claim · model-written summary
Deep tillage increased maize yield components and harvest index relative to no tillage.
- Treatment
- deep tillagee0
- Outcome
- yield components and harvest indexe0
- Direction
- increasede0
- Comparator
- no tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both conventional and deep tillage increased yield components and harvest index of maize compared to no tillage”
Claim · model-written summary
Maize grain yield did not vary among cropping patterns.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain yield remained unchanged among cropping patterns”
e1“sole maize, maize intercropped with clump grass”
Claim · model-written summary
Deep tillage produced lower deep soil bulk density than conventional and no tillage.
Not reportedOrgan / stage
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Deep tillage maintained lower bulk density and greater porosity and organic C in deep soils than conventional and no tillage”
e1“Maize is grown as a rainfed crop”
Claim · model-written summary
Deep tillage produced greater deep soil porosity and organic C than conventional and no tillage.
- Treatment
- Deep tillagee0
- Outcome
- porosity and organic Ce0
- Direction
- greatere0
- Comparator
- conventional and no tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Deep tillage maintained lower bulk density and greater porosity and organic C in deep soils than conventional and no tillage”
e1“Maize is grown as a rainfed crop”
Claim · model-written summary
Clump grass intercropping decreased soil bulk density versus other patterns.
- Treatment
- intercropped with clump grasse0
- Interactor
- clump grasse0weed
- Outcome
- bulk densitye0
- Direction
- decreasede0
- Comparator
- other cropping patternse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize intercropped with clump grass decreased bulk density and increased porosity and organic C compared to other cropping patterns”
Claim · model-written summary
Clump grass intercropping increased soil porosity and organic C versus other patterns.
- Treatment
- intercropped with clump grasse0
- Interactor
- clump grasse0weed
- Outcome
- porosity and organic Ce0
- Direction
- increasede0
- Comparator
- other cropping patternse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize intercropped with clump grass decreased bulk density and increased porosity and organic C compared to other cropping patterns”
Claim · model-written summary
The soil changes were considered likely to improve water and nutrient storage and subsequent maize growth and yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This enhanced the soil capacity to store and mobilizes water and nutrients in deep soil profiles, which is likely to enhance growth and yield of the succeeding maize crop”
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