Abstract
This study investigated the effect of animal manures from cattle, chicken, and horse; plant maures of sawdust, bagasse, grass, coconut coir, and coffee and rice hulls; and inorganic fertilizer, on soil physical and chemical properties and sweetpotato [lpomoea batatas (L.)] yields. Results showed that cv. A28/7 produced a significantly higher tuber yield (254 g plant-1) than cv. 049 (211 g plant-1) but there were no significant differences between cultivars in response to soil amendments. Animal manures, coffee and rice hulls, and inorganic fertilizer significantly increased tuber dry matter yields (241-442 g plant-1) compared to plant manures (35-240 g plant-1). Bulk density was improved with the addition of both animal and plant manures and coffee hull but not with rice hull or inorganic fertilizer. Incorporation of residues with high C:N ratios resulted in reduced yields. Bagasse showed markedly reduced plant growth with chlorotic leaves. These results suggest that animal manures and coffee hulls can improve soil physical and chemical properties and can have beneficial effects on sweetpotato tuber yields.
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Claims 13
Claim · model-written summary
Cultivar A28/7 had higher tuber yield than cultivar 049.
- Taxon
- sweetpotato
_Flower.jpg?width=60)
Ipomoea batatase0 - Material
- cv. A28/7e1
- Outcome
- tuber yielde1
- Direction
- highere1
- Value
- 254 g plant-1e1
- Qualifier
- 211 g plant-1e1
- Comparator
- cv. 049e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“sweetpotato [lpomoea batatas (L.)] yields”
e1“cv. A28/7 produced a significantly higher tuber yield (254 g plant-1) than cv. 049 (211 g plant-1)”
Claim · model-written summary
Cultivar response to soil amendments did not differ significantly.
- Taxon
- sweetpotatoIpomoea batatase0
- Outcome
- response to soil amendmentse1
- Direction
- no significant differencese1
- Comparator
- cultivarse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetpotato [lpomoea batatas (L.)] yields”
e1“there were no significant differences between cultivars in response to soil amendments”
Claim · model-written summary
Animal manures increased tuber dry matter yield versus plant manures.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- Animal manurese1
- Outcome
- tuber dry matter yieldse1
- Direction
- increasede1
- Value
- 241-442 g plant-1e1
- Qualifier
- 35-240 g plant-1e1
- Comparator
- plant manurese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetpotato [lpomoea batatas (L.)] yields”
e1“Animal manures, coffee and rice hulls, and inorganic fertilizer significantly increased tuber dry matter yields (241-442 g plant-1) compared to plant manures (35-240 g plant-1)”
Claim · model-written summary
Coffee and rice hulls increased tuber dry matter yield versus plant manures.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- coffee and rice hullse1
- Outcome
- tuber dry matter yieldse1
- Direction
- increasede1
- Value
- 241-442 g plant-1e1
- Comparator
- plant manurese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetpotato [lpomoea batatas (L.)] yields”
e1“Animal manures, coffee and rice hulls, and inorganic fertilizer significantly increased tuber dry matter yields (241-442 g plant-1) compared to plant manures (35-240 g plant-1)”
Claim · model-written summary
Inorganic fertilizer increased tuber dry matter yield versus plant manures.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- inorganic fertilizere1
- Outcome
- tuber dry matter yieldse1
- Direction
- increasede1
- Value
- 241-442 g plant-1e1
- Comparator
- plant manurese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetpotato [lpomoea batatas (L.)] yields”
e1“Animal manures, coffee and rice hulls, and inorganic fertilizer significantly increased tuber dry matter yields (241-442 g plant-1) compared to plant manures (35-240 g plant-1)”
Claim · model-written summary
Animal manures improved bulk density.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- animale1
- Outcome
- Bulk densitye1
- Direction
- improvede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetpotato [lpomoea batatas (L.)] yields”
e1“Bulk density was improved with the addition of both animal and plant manures and coffee hull but not with rice hull or inorganic fertilizer”
Claim · model-written summary
Plant manures improved bulk density.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- plant manurese1
- Outcome
- Bulk densitye1
- Direction
- improvede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetpotato [lpomoea batatas (L.)] yields”
e1“Bulk density was improved with the addition of both animal and plant manures and coffee hull but not with rice hull or inorganic fertilizer”
Claim · model-written summary
Coffee hull improved bulk density.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- coffee hulle1
- Outcome
- Bulk densitye1
- Direction
- improvede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetpotato [lpomoea batatas (L.)] yields”
e1“Bulk density was improved with the addition of both animal and plant manures and coffee hull but not with rice hull or inorganic fertilizer”
Claim · model-written summary
Rice hull did not improve bulk density.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- rice hulle1
- Outcome
- Bulk densitye1
- Direction
- note1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetpotato [lpomoea batatas (L.)] yields”
e1“Bulk density was improved with the addition of both animal and plant manures and coffee hull but not with rice hull or inorganic fertilizer”
Claim · model-written summary
Inorganic fertilizer did not improve bulk density.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- inorganic fertilizere1
- Outcome
- Bulk densitye1
- Direction
- note1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetpotato [lpomoea batatas (L.)] yields”
e1“Bulk density was improved with the addition of both animal and plant manures and coffee hull but not with rice hull or inorganic fertilizer”
Claim · model-written summary
High-C:N residues reduced sweetpotato yield.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- residues with high C:N ratiose1
- Outcome
- yieldse1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetpotato [lpomoea batatas (L.)] yields”
e1“Incorporation of residues with high C:N ratios resulted in reduced yields”
Claim · model-written summary
Bagasse markedly reduced plant growth and produced chlorotic leaves.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- Bagassee1
- Outcome
- plant growth with chlorotic leavese1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetpotato [lpomoea batatas (L.)] yields”
e1“Bagasse showed markedly reduced plant growth with chlorotic leaves”
Claim · model-written summary
The authors suggested animal manures and coffee hulls to improve soil properties and sweetpotato yield.
- Taxon
- sweetpotatoIpomoea batatase0
- Outcome
- animal manures and coffee hulls can improve soil physical and chemical properties and can have beneficial effects on sweetpotato tuber yieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“animal manures and coffee hulls can improve soil physical and chemical properties and can have beneficial effects on sweetpotato tuber yields”
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141 papers more in this group
See all 145 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.