Abstract
Cassava is a very important tuber crop in Asia. As fertilizer application, especially nitrogen (N), is important to sustain yields, the impact of different rates of N fertilizer and their time of application on growth, yield, and N-recovery efficiency was evaluated over two major seasons in Asia. Applying N at planting increased leaf area index (LAI), especially at greater rates. Split application of 90 kg N at planting and 45 days later induced growth of more tubers, resulting in good yields, when compared to single or three split applications at 45 and 90 days after planting. Split application on two occasions also developed the greatest N-recovery efficiency by both shoots and roots. The correlations between N efficiency and yield parameters were significant and negative (P = 0.05). The importance of two split applications of moderate rates of fertilizer to cassava is presented.
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Claims 7
Claim · model-written summary
Applying nitrogen at planting increased cassava leaf area index, especially at greater rates.
- Taxon
- Cassava
Manihot esculentae1 - Treatment
- Applying N at plantinge0
- Outcome
- leaf area indexe0
- Direction
- increasede0
- Qualifier
- especially at greater ratese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applying N at planting increased leaf area index (LAI), especially at greater rates”
e1“Cassava is a very important tuber crop in Asia.”
Claim · model-written summary
Two split applications of 90 kg N induced more cassava tuber growth than single or three split applications.
- Taxon
- CassavaManihot esculentat0
- Treatment
- Split application of 90 kg N at planting and 45 days latere0
- Outcome
- growth of more tuberse0
- Direction
- moree0
- Comparator
- single or three split applications at 45 and 90 days after plantinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split application of 90 kg N at planting and 45 days later induced growth of more tubers, resulting in good yields, when compared to single or three split applications at 45 and 90 days after planting”
t0“Cassava”
Claim · model-written summary
Two split applications of 90 kg N yielded good cassava yields compared with single or three split applications.
- Taxon
- CassavaManihot esculentat0
- Treatment
- Split application of 90 kg N at planting and 45 days latere0
- Outcome
- good yieldse0
- Direction
- goode0
- Comparator
- single or three split applications at 45 and 90 days after plantinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split application of 90 kg N at planting and 45 days later induced growth of more tubers, resulting in good yields, when compared to single or three split applications at 45 and 90 days after planting”
t0“Cassava”
Claim · model-written summary
Two split nitrogen applications gave the greatest cassava N-recovery efficiency in shoots.
- Taxon
- CassavaManihot esculentat0
- Organ / stage
- shootse0
- Treatment
- Split application on two occasionse0
- Outcome
- N-recovery efficiencye0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split application on two occasions also developed the greatest N-recovery efficiency by both shoots and roots”
t0“Cassava”
Claim · model-written summary
Two split nitrogen applications gave the greatest cassava N-recovery efficiency in roots.
- Taxon
- CassavaManihot esculentat0
- Organ / stage
- rootse0
- Treatment
- Split application on two occasionse0
- Outcome
- N-recovery efficiencye0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split application on two occasions also developed the greatest N-recovery efficiency by both shoots and roots”
t0“Cassava”
Claim · model-written summary
Cassava N efficiency was significantly negatively correlated with yield parameters.
- Taxon
- CassavaManihot esculentat0
- Outcome
- yield parameterse0
- Direction
- negativee0
- Comparator
- N efficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The correlations between N efficiency and yield parameters were significant and negative (P = 0.05)”
t0“Cassava”
Claim · model-written summary
The authors recommend two split applications of moderate fertilizer rates for cassava.
- Taxon
- cassavaManihot esculentae0
- Outcome
- two split applications of moderate rates of fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The importance of two split applications of moderate rates of fertilizer to cassava is presented”
The same questions in other papers
nitrogen · growth · Manihot esculenta (cassava)Positive and negative results
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- positive
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See all 13 papers →nitrogen · yield · Manihot esculenta (cassava)Positive and negative results
23 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- no effect
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See all 27 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.