Abstract
Abstract This study evaluated leaf area development, leaf nutritional content, and yield of pruned/unpruned cassava supplied with nitrogen (N) and potassium (K) during its second vegetative cycle. Two field experiments were conducted in a randomized complete‐block design with split‐plots and four replications. The treatments consisted of four management approaches that combined pruning/not pruning with or without K as the main plot and four N application rates (0, 50, 100, and 200 kg ha −1 N) as the subplots. The results revealed that an evaluation of the nutritional status of cassava during its second vegetative cycle should be considered if shoot pruning has been conducted because pruned plants had higher concentrations of N, P, and K in their leaves, and unpruned plants exhibited leaves with higher Ca, Fe, and Mn concentrations. Pruning of cassava shoots during the autumn/winter resting phase did not negatively affect root yield and may represent a recommended management practice for cassava cultivation. In soils with a medium level of K availability, K provision during the second cassava growth cycle is unnecessary because the application of K did not increase leaf reconstitution or yield components in either pruned or unpruned plants. The late application of N improved the nutritional status of cassava plants and increased their leaf area during the second growth cycle. Cassava root, starch, and flour yields increased in a linear fashion in response to the late application of N.
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Claims 11
Claim · model-written summary
Pruned plants had higher leaf nitrogen, phosphorus and potassium concentrations.
- Taxon
- cassava
Manihot esculentat0 - Treatment
- prunede0
- Outcome
- concentrations of N, P, and K in their leavese0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pruned plants had higher concentrations of N, P, and K in their leaves”
t0“cassava”
Claim · model-written summary
Unpruned plants had higher leaf calcium, iron and manganese concentrations.
- Taxon
- cassavaManihot esculentat0
- Treatment
- unprunede0
- Outcome
- Ca, Fe, and Mn concentrationse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“unpruned plants exhibited leaves with higher Ca, Fe, and Mn concentrations”
t0“cassava”
Claim · model-written summary
Autumn or winter pruning did not negatively affect root yield.
- Taxon
- cassavaManihot esculentae0
- Treatment
- Pruning of cassava shootse0
- Outcome
- root yielde0
- Direction
- did not negatively affecte0
- Qualifier
- during the autumn/winter resting phasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pruning of cassava shoots during the autumn/winter resting phase did not negatively affect root yield”
Claim · model-written summary
Potassium application did not increase leaf reconstitution in either pruning group.
- Taxon
- cassavaManihot esculentat0
- Treatment
- application of Ke0
- Outcome
- leaf reconstitutione0
- Direction
- did not increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of K did not increase leaf reconstitution or yield components in either pruned or unpruned plants”
t0“cassava”
Claim · model-written summary
Potassium application did not increase yield components in either pruning group.
- Taxon
- cassavaManihot esculentat0
- Treatment
- application of Ke0
- Outcome
- yield componentse0
- Direction
- did not increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of K did not increase leaf reconstitution or yield components in either pruned or unpruned plants”
t0“cassava”
Claim · model-written summary
Late nitrogen application improved nutritional status.
- Taxon
- cassavaManihot esculentae0
- Treatment
- late application of Ne0
- Outcome
- nutritional statuse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The late application of N improved the nutritional status of cassava plants and increased their leaf area during the second growth cycle.”
Claim · model-written summary
Late nitrogen application increased leaf area.
- Taxon
- cassavaManihot esculentae0
- Treatment
- late application of Ne0
- Outcome
- leaf areae0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The late application of N improved the nutritional status of cassava plants and increased their leaf area during the second growth cycle.”
Claim · model-written summary
Late nitrogen application increased root, starch and flour yields linearly.
- Taxon
- CassavaManihot esculentae0
- Treatment
- late application of Ne0
- Outcome
- root, starch, and flour yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cassava root, starch, and flour yields increased in a linear fashion in response to the late application of N.”
Claim · model-written summary
The authors recommend considering leaf nutritional assessment after shoot pruning.
- Taxon
- cassavaManihot esculentae0
- Outcome
- evaluation of the nutritional statuse0
- Qualifier
- if shoot pruning has been conductede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an evaluation of the nutritional status of cassava during its second vegetative cycle should be considered if shoot pruning has been conducted”
Claim · model-written summary
The authors suggest autumn or winter shoot pruning as a management practice.
- Taxon
- cassavaManihot esculentae0
- Outcome
- recommended management practicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“may represent a recommended management practice for cassava cultivation”
Claim · model-written summary
The authors deem second-cycle potassium provision unnecessary in soils with medium potassium availability.
- Taxon
- cassavaManihot esculentae0
- Outcome
- K provision during the second cassava growth cycle is unnecessarye0
- Qualifier
- In soils with a medium level of K availabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In soils with a medium level of K availability, K provision during the second cassava growth cycle is unnecessary”
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