Abstract
This study assessed the determinants of weed management strategies on yield of cassava in Kogi State, Nigeria using the ordinary least square regression analysis. A multi-stage random sampling technique was used to select 450 cassava farmers in the state in 2009. The result showed that there was a significant difference in the yield of cassava between plots applied with herbicides and plots without herbicide application. The common herbicides used by the farmers were Primextra GoldO(Atrazine 370 g + S-metolachlor 290 g per litre), GalexO(Metobromuron 250 g + Metolachlor 250 g per litre), Cotoran multi® 500EC (Fluometuron 250 g + metolachlor 250 g per litre), Codal Gold® 412.5DC (250 g prometryn + 162.5 g per litre) and Fusilade Forte® 150 EC (150 g Fluazifop-p-butyl per litre) and Dual Gold® (960 g S-metolachlor per litre). Except Fusilade Forte® that was applied post-emergence to the weeds, the herbicides were mostly applied preemergence to both crops and weeds. Mean yield of cassava for plots applied with herbicides was 8,199 kg/ha and 6,999 kg/ha for plots with zero herbicide application. The study found a significant (p ≤ 0.05) negative relationship between age of farmer and cassava yield. Education, use of herbicides, hand weeding, slashing and intercrop with melon had a significant ( p ≤ 0.01) positive relationship with cassava yield. The coefficients for household size, farming experience and intercrop with okra (Abelmoschus esculentus L. Moench) were positively associated with cassava yield at 10.0% level of probability. Implicit in these results is that weed management strategies should be aimed at the use of herbicides, subsequent hand weeding or slashing, as well as intercrop with crop such as okra and melon (Colocynthis citrullus L.). Also to encourage experienced farmers to remain in production, there should be policy advocacy on free education and intensification of extension education to farmers. Key words: Weed management, cassava yield, ordinary least square regression.
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Claims 10
Claim · model-written summary
Herbicide application raised mean cassava yield to 8,199 kg/ha, against 6,999 kg/ha without herbicide, a significant difference.
- Taxon
- cassava
Manihot esculentae1 - Treatment
- herbicidese1
- Outcome
- Mean yield of cassavae1
- Direction
- higherinferrede1
- Value
- 8,199 kg/hae1
- Qualifier
- 6,999 kg/hae1
- Comparator
- plots with zero herbicide applicatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Mean yield of cassava for plots applied with herbicides was 8,199 kg/ha and 6,999 kg/ha for plots with zero herbicide application”
e2“there was a significant difference in the yield of cassava between plots applied with herbicides and plots without herbicide application”
Claim · model-written summary
Age of farmer had a significant negative relationship with cassava yield.
- Taxon
- cassavaManihot esculentae0
- Treatment
- age of farmere0
- Outcome
- cassava yielde0
- Direction
- negativee0
- Qualifier
- p ≤ 0.05e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The study found a significant (p ≤ 0.05) negative relationship between age of farmer and cassava yield”
Claim · model-written summary
Education had a significant positive relationship with cassava yield.
- Taxon
- cassavaManihot esculentae3
- Treatment
- Educatione3
- Outcome
- cassava yielde3
- Direction
- positivee3
- Qualifier
- p ≤ 0.01e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Education, use of herbicides, hand weeding, slashing and intercrop with melon had a significant ( p ≤ 0.01) positive relationship with cassava yield”
Claim · model-written summary
Use of herbicides had a significant positive relationship with cassava yield.
- Taxon
- cassavaManihot esculentae3
- Treatment
- use of herbicidese3
- Outcome
- cassava yielde3
- Direction
- positivee3
- Qualifier
- p ≤ 0.01e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Education, use of herbicides, hand weeding, slashing and intercrop with melon had a significant ( p ≤ 0.01) positive relationship with cassava yield”
Claim · model-written summary
Hand weeding had a significant positive relationship with cassava yield.
- Taxon
- cassavaManihot esculentae3
- Treatment
- hand weedinge3
- Outcome
- cassava yielde3
- Direction
- positivee3
- Qualifier
- p ≤ 0.01e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Education, use of herbicides, hand weeding, slashing and intercrop with melon had a significant ( p ≤ 0.01) positive relationship with cassava yield”
Claim · model-written summary
Slashing had a significant positive relationship with cassava yield.
- Taxon
- cassavaManihot esculentae3
- Treatment
- slashinge3
- Outcome
- cassava yielde3
- Direction
- positivee3
- Qualifier
- p ≤ 0.01e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Education, use of herbicides, hand weeding, slashing and intercrop with melon had a significant ( p ≤ 0.01) positive relationship with cassava yield”
Claim · model-written summary
Intercropping with melon had a significant positive relationship with cassava yield.
- Taxon
- cassavaManihot esculentae3
- Treatment
- intercrop with melone3
- Outcome
- cassava yielde3
- Direction
- positivee3
- Qualifier
- p ≤ 0.01e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Education, use of herbicides, hand weeding, slashing and intercrop with melon had a significant ( p ≤ 0.01) positive relationship with cassava yield”
Claim · model-written summary
Household size, farming experience and intercropping with okra were positively associated with cassava yield at the 10.0% level of probability.
- Taxon
- cassavaManihot esculentae4
- Treatment
- household size, farming experience and intercrop with okrae4
- Outcome
- cassava yielde4
- Direction
- positively associatede4
- Qualifier
- at 10.0% level of probabilitye4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The coefficients for household size, farming experience and intercrop with okra (Abelmoschus esculentus L. Moench) were positively associated with cassava yield at 10.0% level of probability”
Claim · model-written summary
Weed management strategies should be aimed at herbicide use, subsequent hand weeding or slashing, and intercropping with crops such as okra and melon.
- Taxon
- cassavaManihot esculentat0
- Outcome
- use of herbicides, subsequent hand weeding or slashing, as well as intercrop with crop such as okra and melone5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava yield”
e5“weed management strategies should be aimed at the use of herbicides, subsequent hand weeding or slashing, as well as intercrop with crop such as okra and melon”
Claim · model-written summary
Policy advocacy on free education and intensification of extension education to farmers should be pursued.
- Taxon
- cassavaManihot esculentat0
- Outcome
- policy advocacy on free education and intensification of extension education to farmerse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava yield”
e6“there should be policy advocacy on free education and intensification of extension education to farmers”
The same questions in other papers
herbicide · yield · Manihot esculenta (cassava)Positive and negative results
18 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- positive
- negative
21 papers more in this group
See all 25 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.