Abstract
The efficacy of the pre- and post-planting application of neem seed oil (NSO) or/and diazinon and time of harvest for the control of sweetpotato weevil, Cylas puncticollis (Boh.) was evaluated during the 2009 and 2010 cropping seasons. Forty-eight plots of 3 x 4 m2 each were demarcated and 240 sweetpotato (var. TIS2532.op.1.13) vine cuttings were dipped into 0, 30 and 50 mls NSO and 30 mls of diazinon mixed in 2 and 10 litre soapy water respectively, and kept for 30 mins before planting. Similar treatment was also basally applied post-planting at 1MAP. In 2009, results showed that treatments (NSO or diazinon or their combinations) did not significantly influence percentage plant stand at harvest in both years, but lower percentage plant stands were obtained at 6 MAP (47.72%) than at 5MAP (56.87%). Significantly higher mean total weights of 34.44 t/ha was obtained in 2009 and 8.99 t/ha in 2010 respectively. Similarly, yield ranged from as high as 53.69 t/ha at 5MAP in 2009 to as low as 5.51t/ha at 6MAP in 2010. Significantly lower C. puncticollis attributes as a pest were obtained in 2009 than in 2010. Treatments significantly suppressed total progeny from 11.07 to 7.08, scores from 3.78 to 2.52 and root damage from 68.59% (Pr0Pt0) to 44.38% (Pr3Pt3), 66.55% to 40.00% at 5 to 6MAP. Time of application was significant as 50 mls of NSO applied pre- and post-planting gave highest (35.30%) control of the pest at harvest.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Neem seed oil and diazinon treatments significantly suppressed total progeny of the sweetpotato weevil.
- Taxon
- sweetpotato
_Flower.jpg?width=60)
Ipomoea batatase3 - Treatment
- neem seed oil (NSO) or/and diazinone0
- Interactor
- Cylas puncticollisCylas puncticollise1pest
- Outcome
- total progenye2
- Direction
- suppressede2
- Value
- 11.07 to 7.08e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“neem seed oil (NSO) or/and diazinon”
e1“sweetpotato weevil, Cylas puncticollis (Boh.)”
e2“Treatments significantly suppressed total progeny from 11.07 to 7.08, scores from 3.78 to 2.52 and root damage from 68.59% (Pr0Pt0) to 44.38% (Pr3Pt3), 66.55% to 40.00% at 5 to 6MAP”
e3“240 sweetpotato (var. TIS2532.op.1.13) vine cuttings”
Claim · model-written summary
Neem seed oil and diazinon treatments significantly suppressed the weevil scores.
- Taxon
- sweetpotatoIpomoea batatase3
- Treatment
- neem seed oil (NSO) or/and diazinone0
- Interactor
- Cylas puncticollisCylas puncticollise1pest
- Outcome
- scorese2
- Direction
- suppressede2
- Value
- 3.78 to 2.52e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“neem seed oil (NSO) or/and diazinon”
e1“sweetpotato weevil, Cylas puncticollis (Boh.)”
e2“Treatments significantly suppressed total progeny from 11.07 to 7.08, scores from 3.78 to 2.52 and root damage from 68.59% (Pr0Pt0) to 44.38% (Pr3Pt3), 66.55% to 40.00% at 5 to 6MAP”
e3“240 sweetpotato (var. TIS2532.op.1.13) vine cuttings”
Claim · model-written summary
Neem seed oil and diazinon treatments significantly suppressed root damage by the weevil.
- Taxon
- sweetpotatoIpomoea batatase3
- Treatment
- neem seed oil (NSO) or/and diazinone0
- Interactor
- Cylas puncticollisCylas puncticollise1pest
- Outcome
- root damagee2
- Direction
- suppressede2
- Value
- 68.59% (Pr0Pt0) to 44.38% (Pr3Pt3)e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“neem seed oil (NSO) or/and diazinon”
e1“sweetpotato weevil, Cylas puncticollis (Boh.)”
e2“Treatments significantly suppressed total progeny from 11.07 to 7.08, scores from 3.78 to 2.52 and root damage from 68.59% (Pr0Pt0) to 44.38% (Pr3Pt3), 66.55% to 40.00% at 5 to 6MAP”
e3“240 sweetpotato (var. TIS2532.op.1.13) vine cuttings”
Claim · model-written summary
50 mL of NSO applied before and after planting gave the highest control of the weevil at harvest, 35.30%.
- Taxon
- sweetpotatoIpomoea batatase3
- Treatment
- 50 mls of NSO applied pre- and post-plantinge4
- Interactor
- Cylas puncticollisCylas puncticollise1pest
- Outcome
- control of the peste4
- Direction
- higheste4
- Value
- 35.30%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“sweetpotato weevil, Cylas puncticollis (Boh.)”
e3“240 sweetpotato (var. TIS2532.op.1.13) vine cuttings”
e4“Time of application was significant as 50 mls of NSO applied pre- and post-planting gave highest (35.30%) control of the pest at harvest”
Claim · model-written summary
Sweetpotato mean total weight was significantly higher at 34.44 t/ha in 2009 and 8.99 t/ha in 2010.
- Taxon
- sweetpotatoIpomoea batatase3
- Outcome
- mean total weightse5
- Value
- 34.44 t/hae5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“240 sweetpotato (var. TIS2532.op.1.13) vine cuttings”
e5“Significantly higher mean total weights of 34.44 t/ha was obtained in 2009 and 8.99 t/ha in 2010”
Claim · model-written summary
Neem seed oil and diazinon treatments did not significantly influence sweetpotato plant stand at harvest.
- Taxon
- sweetpotatoIpomoea batatase3
- Treatment
- NSO or diazinon or their combinationse6
- Outcome
- percentage plant stande6
- Direction
- did not significantly influencee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“240 sweetpotato (var. TIS2532.op.1.13) vine cuttings”
e6“treatments (NSO or diazinon or their combinations) did not significantly influence percentage plant stand at harvest in both years”
The same questions in other papers
botanical · growth · Ipomoea batatas (sweet potato)Positive and negative results
2 papers in the same direction as this paper · 10 in the opposite direction
- positive
- positive
- positive
9 papers more in this group
See all 13 papers →botanical · Cylas puncticollis · Ipomoea batatas (sweet potato)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 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.