Abstract
Kenaf is a rapidly growing annual crop that is mainly cultivated for its stem with numerous end uses (paper, insulation mats, oil/chemical absorbent, energy production, etc.). The growth and adaptability of several varieties have already been tested in central Greece for the period 1994-1997. This work aimed to evaluate the effect of variety (Tainung 2, Mal 1, Everglades 41) and nitrogen fertilization (N 60 and 120 kg/ha) on growth and yield in Xanthi (north-east Greece). After three years of experimentation (1997-1999), it was found that among the three tested varieties the most productive at the end of the growing season (December) was Tainung 2 with mean dry yield of 13.2 t/ha, followed by Mal 1 12.7 t/ha and Everglades 41 11.5 t/ha. The highest dry yield, averaged overall treatments, was recorded in the third year (1999, 14.1 t/ha), followed by the mean yield of 1998 (12.6 t/ha) and the lowest yield was recorded in the first year (10.8 t/ha) as a result of the strong hails that occurred in August 1997 and resulted in damages of the apical meristem of the stems. Concerning the effect of nitrogen fertilization on growth and yield it was found that the high nitrogen application (N 120 kg/ha) resulted in taller plants (3.3%) with higher stem diameter (6.7%) and mean dry yield (11%) compared to plants which got low nitrogen application (N 60 kg/ha). It should be mentioned that the moisture content at the final harvests (December), averaged overall trials, was quite low (36%). At the same time the mean nitrogen content of the harvested material (stems) was 0.48% and this corresponds to a nitrogen uptake of 59.2 kg/ha.
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Claims 12
Claim · model-written summary
Tainung 2 had mean dry yield 13.2 t/ha, highest among tested varieties.
- Taxon
- Kenaf
Hibiscus cannabinust0 - Material
- Tainung 2e0
- Outcome
- mean dry yielde0
- Direction
- most productivee0
- Value
- 13.2 t/hae0
- Qualifier
- Decembere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“most productive at the end of the growing season (December) was Tainung 2 with mean dry yield of 13.2 t/ha”
t0“Kenaf”
Claim · model-written summary
Mal 1 yielded 12.7 t/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“followed by Mal 1 12.7 t/ha”
t0“Kenaf in north-east Greece Part II - Effect of variety and nitrogen on growth and dry yield”
Claim · model-written summary
Everglades 41 yielded 11.5 t/ha.
- Taxon
- KenafHibiscus cannabinust0
- Material
- Everglades 41e0
- Outcome
- yieldt0
- Value
- 11.5 t/hae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Everglades 41 11.5 t/ha”
t0“Kenaf in north-east Greece Part II - Effect of variety and nitrogen on growth and dry yield”
Claim · model-written summary
Dry yield was highest in 1999 at 14.1 t/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest dry yield, averaged overall treatments, was recorded in the third year (1999, 14.1 t/ha)”
t0“Kenaf”
Claim · model-written summary
Mean yield in 1998 was 12.6 t/ha.
- Taxon
- KenafHibiscus cannabinust0
- Outcome
- mean yielde0
- Value
- 12.6 t/hae0
- Qualifier
- 1998e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mean yield of 1998 (12.6 t/ha)”
t0“Kenaf”
Claim · model-written summary
1997 yield was lowest at 10.8 t/ha after hail damaged stem apical meristems.
- Taxon
- KenafHibiscus cannabinust0
- Outcome
- yielde0
- Direction
- loweste0
- Value
- 10.8 t/hae0
- Qualifier
- strong hails that occurred in August 1997e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lowest yield was recorded in the first year (10.8 t/ha) as a result of the strong hails that occurred in August 1997 and resulted in damages of the apical meristem of the stems”
t0“Kenaf”
Claim · model-written summary
The high nitrogen rate increased plant height by 3.3%.
- Taxon
- KenafHibiscus cannabinust0
- Treatment
- N 120 kg/hae0
- Outcome
- taller plantse0
- Direction
- tallere0
- Value
- 3.3%e0
- Comparator
- N 60 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high nitrogen application (N 120 kg/ha) resulted in taller plants (3.3%) with higher stem diameter (6.7%) and mean dry yield (11%) compared to plants which got low nitrogen application (N 60 kg/ha)”
t0“Kenaf”
Claim · model-written summary
The high nitrogen rate increased stem diameter by 6.7%.
- Taxon
- KenafHibiscus cannabinust0
- Treatment
- N 120 kg/hae0
- Outcome
- stem diametere0
- Direction
- highere0
- Value
- 6.7%e0
- Comparator
- N 60 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high nitrogen application (N 120 kg/ha) resulted in taller plants (3.3%) with higher stem diameter (6.7%) and mean dry yield (11%) compared to plants which got low nitrogen application (N 60 kg/ha)”
t0“Kenaf”
Claim · model-written summary
The high nitrogen rate increased mean dry yield by 11%.
- Taxon
- KenafHibiscus cannabinust0
- Treatment
- N 120 kg/hae0
- Outcome
- mean dry yielde0
- Direction
- highere0
- Value
- 11%e0
- Comparator
- N 60 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high nitrogen application (N 120 kg/ha) resulted in taller plants (3.3%) with higher stem diameter (6.7%) and mean dry yield (11%) compared to plants which got low nitrogen application (N 60 kg/ha)”
t0“Kenaf”
Claim · model-written summary
Final-harvest moisture content averaged 36%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“moisture content at the final harvests (December), averaged overall trials, was quite low (36%)”
t0“Kenaf”
Claim · model-written summary
Harvested stem nitrogen content averaged 0.48%.
- Taxon
- KenafHibiscus cannabinust0
- Organ / stage
- stemse0
- Outcome
- mean nitrogen contente0
- Value
- 0.48%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mean nitrogen content of the harvested material (stems) was 0.48%”
t0“Kenaf”
Claim · model-written summary
Stem nitrogen content corresponded to uptake of 59.2 kg/ha.
- Taxon
- KenafHibiscus cannabinust0
- Outcome
- nitrogen uptakee0
- Value
- 59.2 kg/hae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this corresponds to a nitrogen uptake of 59.2 kg/ha”
t0“Kenaf”
The same questions in other papers
nitrogen · growth · Hibiscus cannabinus (kenaf)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
nitrogen · yield · Hibiscus cannabinus (kenaf)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.