Abstract
Field studies were undertaken at Offinso in the Ashanti Region of Ghana during the 2015/2016 growing season to evaluate growth, root and dry matter yields of an improved cassava variety (Bankyehemaa) treated with poultry manure (PM), NPK 15-15-15 and NPK 23-10-10 fertilizers. The treatment structure was a 3 x 4 factorial, laid out in a Randomized Complete Block Design with three replications. Three levels of fertilizer (600 kg/ha NPK 15-15-15, 600 kg/ha NPK 23-10-10 and 2 t/ha PM) were applied at 6, 8, 10 and 12 weeks after planting. The parameters measured included plant height, fresh and dry shoot weights, number of stems per plant, stem girth, fresh and dry root yields and total dry matter yield. The data collected were subjected to analysis of variance using the Genstat Statistical package. Main effects of fertilizer type and time of fertilizer application on most of the parameters measured were not significant. However, the interaction effects of the two factors were significant in all the parameters measured. Vegetative growth of Bankyehemaa increased when mineral fertilizers were applied earlier than 12 weeks after planting. The highest fresh and dry shoot weights and the biggest stems were produced when NPK 15-15-15 fertilizer was applied at 6 weeks after planting. Plants treated with NPK 15-15-15 fertilizer at 10 weeks after planting were the tallest, while those treated with NPK 23-10-10 fertilizer at 8 weeks after planting produced the highest number of stems per plant. Application of poultry manure at 6 weeks after planting produced the highest fresh cassava root yield of 28.10 t/ha. The highest dry matter yield of 19.80 t/ha was obtained when poultry manure was applied at 12 weeks after planting.
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Claims 8
Claim · model-written summary
Main effects of fertilizer type and timing were not significant for most measured parameters.
- Taxon
- cassava
Manihot esculentat0 - Treatment
- fertilizer type and time of fertilizer applicatione0
- Outcome
- most of the parameters measurede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Main effects of fertilizer type and time of fertilizer application on most of the parameters measured were not significant.”
t0“cassava”
Claim · model-written summary
The interaction of fertilizer type and timing was significant for all measured parameters.
- Taxon
- cassavaManihot esculentat0
- Treatment
- two factorse0
- Outcome
- all the parameters measurede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the interaction effects of the two factors were significant in all the parameters measured.”
t0“cassava”
Claim · model-written summary
Bankyehemaa vegetative growth increased when mineral fertilizer was applied before 12 weeks.
- Taxon
- cassavaManihot esculentat0
- Material
- Bankyehemaae0
- Treatment
- mineral fertilizers were applied earlier than 12 weeks after plantinge0
- Outcome
- Vegetative growthe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vegetative growth of Bankyehemaa increased when mineral fertilizers were applied earlier than 12 weeks after planting.”
t0“cassava”
Claim · model-written summary
NPK 15-15-15 at 6 weeks produced the highest fresh and dry shoot weights and biggest stems.
- Taxon
- cassavaManihot esculentat0
- Treatment
- NPK 15-15-15 fertilizer was applied at 6 weeks after plantinge0
- Outcome
- fresh and dry shoot weights and the biggest stemse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest fresh and dry shoot weights and the biggest stems were produced when NPK 15-15-15 fertilizer was applied at 6 weeks after planting.”
t0“cassava”
Claim · model-written summary
NPK 15-15-15 at 10 weeks produced the tallest plants.
- Taxon
- cassavaManihot esculentat0
- Treatment
- NPK 15-15-15 fertilizer at 10 weeks after plantinge0
- Outcome
- talleste0
- Direction
- talleste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants treated with NPK 15-15-15 fertilizer at 10 weeks after planting were the tallest”
t0“cassava”
Claim · model-written summary
NPK 23-10-10 at 8 weeks produced the highest stem number per plant.
- Taxon
- cassavaManihot esculentat0
- Treatment
- NPK 23-10-10 fertilizer at 8 weeks after plantinge0
- Outcome
- number of stems per plante0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NPK 23-10-10 fertilizer at 8 weeks after planting produced the highest number of stems per plant.”
t0“cassava”
Claim · model-written summary
Poultry manure at 6 weeks produced the highest fresh root yield, 28.10 t/ha.
- Taxon
- cassavaManihot esculentae0
- Treatment
- poultry manure at 6 weeks after plantinge0
- Outcome
- fresh cassava root yielde0
- Direction
- higheste0
- Value
- 28.10 t/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of poultry manure at 6 weeks after planting produced the highest fresh cassava root yield of 28.10 t/ha.”
Claim · model-written summary
Poultry manure at 12 weeks produced the highest dry matter yield, 19.80 t/ha.
- Taxon
- cassavaManihot esculentat0
- Treatment
- poultry manure was applied at 12 weeks after plantinge0
- Outcome
- dry matter yielde0
- Direction
- higheste0
- Value
- 19.80 t/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest dry matter yield of 19.80 t/ha was obtained when poultry manure was applied at 12 weeks after planting.”
t0“cassava”
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