Abstract
Cassava is important as food, feed, and raw material, yet its root architecture is not fully understood and thoroughly studied, thereby limiting the realization of its full potential. Compounding this is the common practice of applying fertilizer to cassava at planting without extensive knowledge of the suitable growth stage or time for optimal nutrient uptake. Consequently, this study’s objective was to stagger fertilizer application in split doses to synchronize nutrient uptake and cassava growth and track the storage root bulking process. Nine treatments of normal and controlled-release fertilizers were tested in the field, each applied in four splits at 0, 2, 4, and 6 months after planting (MAPs) to the Binte Massude cassava variety. The results indicated that controlled-release fertilizers applied in two splits at planting and 6 MAPs led to 19.0% greater root yield, whereas normal fertilizers applied in four splits every 2 months led to 22.7% greater root yield compared to not applying fertilizer to cassava. Irrespective of the fertilizer form, when the number of roots increased, the root yield decreased gradually, while root diameter and root length had a direct relationship with storage root yield. Furthermore, the relationship between root number and either root diameter or root length was significantly inverse. This study has successfully indicated the root attributes that can be observed to predict storage root yield, and that staggering fertilizer application in targeted splits increases root yield, however, this must be synchronized with moisture availability for optimal benefit.
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Claims 9
Claim · model-written summary
Controlled-release fertilizer in two splits at planting and six months increased cassava root yield by 19.0% over no fertilizer.
- Taxon
- cassava
Manihot esculentat0 - Treatment
- controlled-release fertilizers applied in two splits at planting and 6 MAPse0
- Outcome
- root yielde0
- Direction
- greatere0
- Value
- 19.0%e0
- Comparator
- not applying fertilizer to cassavae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e0“controlled-release fertilizers applied in two splits at planting and 6 MAPs led to 19.0% greater root yield”
e1“compared to not applying fertilizer to cassava”
Claim · model-written summary
Normal fertilizer in four splits every two months increased cassava root yield by 22.7% over no fertilizer.
- Taxon
- cassavaManihot esculentat0
- Treatment
- normal fertilizers applied in four splits every 2 monthse0
- Outcome
- root yielde0
- Direction
- greatere0
- Value
- 22.7%e0
- Comparator
- not applying fertilizer to cassavae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e0“normal fertilizers applied in four splits every 2 months led to 22.7% greater root yield compared to not applying fertilizer to cassava”
Claim · model-written summary
Across fertilizer forms, more roots were associated with lower root yield.
- Taxon
- cassavaManihot esculentat0
- Organ / stage
- rootse0
- Outcome
- root yielde0
- Direction
- decreasede0
- Qualifier
- Irrespective of the fertilizer forme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e0“Irrespective of the fertilizer form, when the number of roots increased, the root yield decreased gradually”
Claim · model-written summary
Root diameter was directly related to storage root yield.
- Taxon
- cassavaManihot esculentat0
- Organ / stage
- root diametere0
- Outcome
- storage root yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e0“root diameter and root length had a direct relationship with storage root yield”
Claim · model-written summary
Root length was directly related to storage root yield.
- Taxon
- cassavaManihot esculentat0
- Organ / stage
- root lengthe0
- Outcome
- storage root yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e0“root diameter and root length had a direct relationship with storage root yield”
Claim · model-written summary
Root number was inversely related to root diameter.
- Taxon
- cassavaManihot esculentat0
- Organ / stage
- root numbere0
- Outcome
- root diametere0
- Direction
- inversee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e0“the relationship between root number and either root diameter or root length was significantly inverse”
Claim · model-written summary
Root number was inversely related to root length.
- Taxon
- cassavaManihot esculentat0
- Organ / stage
- root numbere0
- Outcome
- root lengthe0
- Direction
- inversee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e0“the relationship between root number and either root diameter or root length was significantly inverse”
Claim · model-written summary
Root attributes can be used to predict storage root yield.
- Taxon
- cassavaManihot esculentat0
- Outcome
- predict storage root yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e0“root attributes that can be observed to predict storage root yield”
Claim · model-written summary
Split fertilizer applications should be synchronized with moisture availability for optimal root yield.
- Taxon
- cassavaManihot esculentat0
- Outcome
- synchronized with moisture availability for optimal benefite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cassava”
e0“staggering fertilizer application in targeted splits increases root yield, however, this must be synchronized with moisture availability for optimal benefit”
The same questions in other papers
fertilization · yield · Manihot esculenta (cassava)Positive and negative results
140 papers in the same direction as this paper · 10 in the opposite direction · 2 reporting no difference from an alternative
- positive
- positive
- negative
149 papers more in this group
See all 153 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.