Abstract
Four mulching materials were evaluated in sweetpotato [Ipomea batatas (L.) Lam.] plots in a highland region of Papua New Guinea (PNG) to assess the influence of mulch on weed infestation, soil temperature, soil nutrient concentration, and tuber yield. Grass mulch gave the most effective weed control; treatment differences were significant (P ? 0.05) at 4 weeks after planting (WAP) but not at 20 WAP. Grass mulch also gave the lowest soil temperatures, significant (P ? 0.05) temperature differences being observed at 5-cm, 10-cm, and 15-cm depths. Coffee pulp mulch resulted in increased concentration of K, Ca, and Mg and reduced soil acidity. Sawdust mulch gave a higher, although not significant, tuber dry matter (DM) yield at 16 WAP whereas the grass mulch gave the lowest tuber DM yield. Of the yield components investigated, none was significantly correlated with tuber yield. Sweetpotato farmers in the highlands of PNG are encouraged to mulch their gardens with coffee pulp or with coffee husk to obtain high yielding tubers, and to assist in reducing coffee waste in the environment.
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Claims 8
Claim · model-written summary
Grass mulch gave the most effective weed control, with significant treatment differences at four weeks but not 20 weeks.
- Taxon
- sweetpotato
_Flower.jpg?width=60)
Ipomoea batatase1 - Treatment
- Grass mulche0
- Outcome
- weed controle0
- Direction
- most effectivee0
- Qualifier
- at 4 weeks after planting (WAP) but not at 20 WAPe0
- Setting
- Papua New Guineae1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“Grass mulch gave the most effective weed control; treatment differences were significant (P ? 0.05) at 4 weeks after planting (WAP) but not at 20 WAP”
e1“sweetpotato [Ipomea batatas (L.) Lam.] plots in a highland region of Papua New Guinea (PNG)”
Claim · model-written summary
Grass mulch gave the lowest soil temperatures, with significant differences at depths of 5, 10, and 15 cm.
- Taxon
- sweetpotatoIpomoea batatase1
- Treatment
- Grass mulche0
- Outcome
- soil temperaturese0
- Direction
- loweste0
- Qualifier
- 5-cm, 10-cm, and 15-cm depthse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grass mulch also gave the lowest soil temperatures, significant (P ? 0.05) temperature differences being observed at 5-cm, 10-cm, and 15-cm depths”
e1“sweetpotato [Ipomea batatas (L.) Lam.] plots”
Claim · model-written summary
Coffee pulp mulch increased soil K, Ca, and Mg concentrations.
- Taxon
- sweetpotatoIpomoea batatase1
- Treatment
- Coffee pulp mulche0
- Outcome
- concentration of K, Ca, and Mge0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Coffee pulp mulch resulted in increased concentration of K, Ca, and Mg”
e1“sweetpotato [Ipomea batatas (L.) Lam.] plots”
Claim · model-written summary
Coffee pulp mulch reduced soil acidity.
- Taxon
- sweetpotatoIpomoea batatase1
- Treatment
- Coffee pulp mulche0
- Outcome
- soil aciditye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Coffee pulp mulch resulted in increased concentration of K, Ca, and Mg and reduced soil acidity”
e1“sweetpotato [Ipomea batatas (L.) Lam.] plots”
Claim · model-written summary
Sawdust mulch gave higher tuber dry matter yield at 16 weeks, but the difference was not significant.
- Taxon
- sweetpotatoIpomoea batatase1
- Treatment
- Sawdust mulche0
- Outcome
- tuber dry matter (DM) yielde0
- Direction
- highere0
- Qualifier
- at 16 WAPe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sawdust mulch gave a higher, although not significant, tuber dry matter (DM) yield at 16 WAP”
e1“sweetpotato [Ipomea batatas (L.) Lam.] plots”
Claim · model-written summary
Grass mulch gave the lowest tuber dry matter yield.
- Taxon
- sweetpotatoIpomoea batatase1
- Treatment
- grass mulche0
- Outcome
- tuber DM yielde0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the grass mulch gave the lowest tuber DM yield”
e1“sweetpotato [Ipomea batatas (L.) Lam.] plots”
Claim · model-written summary
No investigated yield component was significantly correlated with sweetpotato tuber yield.
- Taxon
- sweetpotatoIpomoea batatase1
- Organ / stage
- yield componentse0
- Outcome
- tuber yielde0
- Direction
- none was significantly correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Of the yield components investigated, none was significantly correlated with tuber yield”
e1“sweetpotato [Ipomea batatas (L.) Lam.] plots”
Claim · model-written summary
The authors encourage sweetpotato farmers in PNG highlands to mulch with coffee pulp or husk for high yielding tubers and waste reduction.
- Taxon
- SweetpotatoIpomoea batatase0
- Outcome
- mulch their gardens with coffee pulp or with coffee huske0
- Setting
- highlands of PNGe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sweetpotato farmers in the highlands of PNG are encouraged to mulch their gardens with coffee pulp or with coffee husk to obtain high yielding tubers, and to assist in reducing coffee waste in the environment”
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mulching · weed · Ipomoea batatas (sweet potato)Results agree
5 papers in the same direction as this paper
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- positive
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See all 6 papers →mulching · growth · Ipomoea batatas (sweet potato)Results agree
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See all 8 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.