Abstract
Background and Objective: Management of Striga asiatica is a challenge under Zimbabwes small holder sector. The aim was to determine the effects of quantities of diammonium phosphate (DAP) fertilizer and cattle manure on Striga infestation of the two sorghum varieties: Tsweta and Macia common to Zimbabwe. Methodology: A 223 factorial experiment laid down as a completely randomized design was set up in a controlled environment at Henderson Research Station in Zimbabwe. The first factor was variety at two levels: Macia and Tsweta, fertiliser at two levels: Diammonium phosphate and cattle manure. Results: The results indicated that the rates of 320 and 160 kg haG 1 of diammonium phosphate reduced Striga asiatica emergence by 13 and 11 weeks, respectively. The application of DAP reduced Striga asiatica attachments and the reduction was higher in Tsweta than Macia cultivar. In contrast, the different rates of manure had no effect (p>0.05) on Striga attachments. Contrary to the stunted growth in control pots DAP increased growth of sorghum under infestations. There were varietal differences in the response of sorghum to manure application. Conclusion: The DAP offered protection to the sorghum cultivars from Striga asiatica during the early stages of growth. The DAP can thus protect sorghum from the Striga scourge even when applied at half the conventional rate. Infested sorghum gave higher yields when fertilized by both DAP and cattle manure although the increase was greater on DAP compared to manure. Manure also protects sorghum from Striga but to a lesser extent when compared to DAP.
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Claims 11
Claim · model-written summary
DAP at 320 kg haG 1 delayed Striga asiatica emergence by 13 weeks.
- Taxon
- Sorghum bicolor
Sorghum bicolort0 - Treatment
- 320 and 160 kg haG 1 of diammonium phosphatee0
- Interactor
- Striga asiatica
Striga asiaticae0weed - Outcome
- Striga asiatica emergencee0
- Direction
- reducede0
- Value
- 13e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rates of 320 and 160 kg haG 1 of diammonium phosphate reduced Striga asiatica emergence by 13 and 11 weeks, respectively”
t0“Sorghum bicolor L. Moench”
Claim · model-written summary
DAP at 160 kg haG 1 delayed Striga asiatica emergence by 11 weeks.
- Taxon
- Sorghum bicolorSorghum bicolort0
- Treatment
- 160 kg haG 1 of diammonium phosphatee0
- Interactor
- Striga asiaticaStriga asiaticae0weed
- Outcome
- Striga asiatica emergencee0
- Direction
- reducede0
- Value
- 11 weekse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rates of 320 and 160 kg haG 1 of diammonium phosphate reduced Striga asiatica emergence by 13 and 11 weeks, respectively”
t0“Sorghum bicolor L. Moench”
Claim · model-written summary
DAP reduced Striga attachments more in Tsweta than Macia.
- Taxon
- Sorghum bicolorSorghum bicolort0
- Material
- Tswetae0
- Treatment
- DAPe0
- Interactor
- Striga asiaticaStriga asiaticae0weed
- Outcome
- Striga asiatica attachmentse0
- Direction
- reducede0
- Comparator
- Macia cultivare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of DAP reduced Striga asiatica attachments and the reduction was higher in Tsweta than Macia cultivar”
t0“Sorghum bicolor L. Moench”
Claim · model-written summary
Manure rates had no statistically significant effect on Striga attachments.
- Taxon
- Sorghum bicolorSorghum bicolort0
- Treatment
- different rates of manuree0
- Outcome
- Striga attachmentse0
- Direction
- no effecte0
StrigaNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“different rates of manure had no effect (p>0.05) on Striga attachments”
t0“Sorghum bicolor L. Moench”
Claim · model-written summary
DAP increased growth of infested sorghum relative to stunted controls.
- Treatment
- DAPe0
- Interactor
- Striga asiaticaStriga asiaticat0weed
- Outcome
- growth of sorghume0
- Direction
- increasede0
- Comparator
- control potse0
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Contrary to the stunted growth in control pots DAP increased growth of sorghum under infestations”
t0“Striga asiatica L. Moench”
Claim · model-written summary
Sorghum varieties differed in their response to manure.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were varietal differences in the response of sorghum to manure application”
Claim · model-written summary
DAP protected sorghum cultivars from Striga asiatica during early growth.
- Organ / stage
- early stages of growthe0
- Treatment
- DAPe0
- Interactor
- Striga asiaticaStriga asiaticae0weed
- Outcome
- protectione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The DAP offered protection to the sorghum cultivars from Striga asiatica during the early stages of growth”
Claim · model-written summary
DAP could protect sorghum against Striga at half the conventional rate.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The DAP can thus protect sorghum from the Striga scourge even when applied at half the conventional rate”
Claim · model-written summary
DAP fertilization increased yield of infested sorghum more than manure.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Infested sorghum gave higher yields when fertilized by both DAP and cattle manure although the increase was greater on DAP compared to manure”
Claim · model-written summary
Cattle manure fertilization increased yield of infested sorghum.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Infested sorghum gave higher yields when fertilized by both DAP and cattle manure although the increase was greater on DAP compared to manure”
Claim · model-written summary
Manure protected sorghum from Striga less than DAP.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Manure also protects sorghum from Striga but to a lesser extent when compared to DAP”
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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.