Abstract
Result of field trial reported herein was conducted during 2010 and 2011 wet season at Wamdeo (10 0 30 ‘ N, 13 0 09 ‘ E), 345m above sea level, geographically located south of Borno state in Northern Guinea savanna of Nigeria. The treatments were 0, 30, 60, 90 and 120kg N ha -1 , arranged in randomized complete block design (RCBD) and replicated three times. Results indicated among others that growth parameters (leaf area, plant dry weight and crop growth rates) all increased with increasing Nitrogen (N) rates as the application of 120kg N ha -1 produced leaves with wider surfaces and increased dry matter production during all sampling periods (4, 6, 8 and 10 WAS) in both years and combined analysis. Also, the application of 90kg N ha -1 accelerated crop growth in 2011 wet season without statistical comparison to other N rates, as 120kg N ha -1 in 2010 at 8 and 10 WAS and in combined analysis at 10 WAS influenced higher crop vigour which out-grew other N rates. Conclusively, the study stressed that Nitrogen application markedly enhanced growth and yield if applied in the right quantity and time. Consequently, farmers are hereby encouraged to apply the mineral in the right proportion of at least 120kg to 200kg to their plants for improved growth and yield.
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Claims 5
Claim · model-written summary
Leaf area, plant dry weight and crop growth rates increased with nitrogen rate.
- Taxon
- Sunflower
Helianthus annuust0 - Treatment
- increasing Nitrogen (N) ratese0
- Outcome
- leaf area, plant dry weight and crop growth ratese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sunflower (Helianthus Annuus L.)”
e0“growth parameters (leaf area, plant dry weight and crop growth rates) all increased with increasing Nitrogen (N) rates”
Claim · model-written summary
Applying 120kg N ha -1 increased leaf surface and dry matter production across sampling periods.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- 120kg N ha -1e0
- Outcome
- leaves with wider surfaces and increased dry matter productione0
- Direction
- increasede0
- Qualifier
- during all sampling periods (4, 6, 8 and 10 WAS)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sunflower (Helianthus Annuus L.)”
e0“the application of 120kg N ha -1 produced leaves with wider surfaces and increased dry matter production during all sampling periods (4, 6, 8 and 10 WAS) in both years and combined analysis”
Claim · model-written summary
Applying 90kg N ha -1 accelerated crop growth in the 2011 wet season.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- 90kg N ha -1e0
- Outcome
- crop growthe0
- Direction
- acceleratede0
- Qualifier
- without statistical comparisone0
- Comparator
- other N ratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sunflower (Helianthus Annuus L.)”
e0“the application of 90kg N ha -1 accelerated crop growth in 2011 wet season without statistical comparison to other N rates”
Claim · model-written summary
Applying 120kg N ha -1 produced higher crop vigour than other N rates at stated sampling times.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- 120kg N ha -1e0
- Outcome
- crop vigoure0
- Direction
- highere0
- Qualifier
- in 2010 at 8 and 10 WAS and in combined analysis at 10 WASe0
- Comparator
- other N ratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sunflower (Helianthus Annuus L.)”
e0“120kg N ha -1 in 2010 at 8 and 10 WAS and in combined analysis at 10 WAS influenced higher crop vigour which out-grew other N rates”
Claim · model-written summary
The authors encouraged farmers to apply at least 120kg to 200kg mineral nitrogen for improved growth and yield.
- Taxon
- SunflowerHelianthus annuust0
- Outcome
- apply the mineral in the right proportion of at least 120kg to 200kge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sunflower (Helianthus Annuus L.)”
e0“farmers are hereby encouraged to apply the mineral in the right proportion of at least 120kg to 200kg to their plants for improved growth and yield”
The same questions in other papers
nitrogen · growth · Helianthus annuus (common sunflower)Results differ
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- no effect
- negative
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See all 76 papers →nitrogen · yield · Helianthus annuus (common sunflower)Positive and negative results
181 papers in the same direction as this paper · 10 in the opposite direction · 4 reporting no difference from an alternative
- negative
- no effect
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See all 196 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.