Abstract
Elephant grass has been proposed for the energy sector as a possible source of renewable energy, because of its high biomass production. The aim of this study was to evaluate the effect of the mineral nutrients nitrogen and potassium on the morpho-agronomic traits (dry mater yield (DMY), percentage of DM (%DM), number of tillers per linear meter (NT), plant height (PH), stem diameter (SD) and leaf blade width (LW)) in different elephant grass genotypes in a randomized-block experimental treatment in a split-plot arrangement with three replications, in which the genotype factor (‘Cuban Pinda’ - G1; ‘IAC Campinas’ - G2; and ‘Cameroon’ - G3) was randomized in the plot, and the N and K factor was randomized in the sub-plot. The increase in nitrogen and potassium doses utilized influenced very little or almost did not influence the response of the three genotypes for the different morpho-agronomic traits assessed. The three genotypes had high number of tillers, height, and stem diameter at the lowest N and K doses, demonstrating a possible trend of high doses not providing a highly significant increase in these traits. The study of DMY showed that under a low nitrogen dose and with increase in potassium concentrations, dry matter yield increased; however, as the nitrogen dose increased in associated with potassium doses, dry matter yield did not augment, but was rather suppressed. The three elephant grass genotypes: ‘Cuban Pinda’, ‘IAC Campinas’, and ‘Cameroon’, had average dry yields of 52.66, 50.60, and 48.57 t ha–1, respectively. Results are highly promising and prove the possibility of using elephant grass as an alternative source for biomass production. Key words: Renewable energy, mineral nutrients, production capacity.
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Claims 8
Claim · model-written summary
Increasing nitrogen and potassium doses had little or almost no influence on the assessed traits of the three genotypes.
- Taxon
- elephant grass (Pennisetum purpureum Schum.)
.jpg?width=60)
Cenchrus purpureust0 - Treatment
- increase in nitrogen and potassium dosese0
- Outcome
- morpho-agronomic traitse0
- Direction
- very little or almost did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The increase in nitrogen and potassium doses utilized influenced very little or almost did not influence the response of the three genotypes for the different morpho-agronomic traits assessed.”
t0“elephant grass (Pennisetum purpureum Schum.)”
Claim · model-written summary
The three genotypes had high tiller number, height and stem diameter at the lowest nitrogen and potassium doses.
- Taxon
- elephant grass (Pennisetum purpureum Schum.)Cenchrus purpureust0
- Treatment
- lowest N and K dosese0
- Outcome
- number of tillers, height, and stem diametere0
- Direction
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The three genotypes had high number of tillers, height, and stem diameter at the lowest N and K doses”
t0“elephant grass (Pennisetum purpureum Schum.)”
Claim · model-written summary
At low nitrogen dose, increasing potassium raised dry matter yield.
- Taxon
- elephant grass (Pennisetum purpureum Schum.)Cenchrus purpureust0
- Treatment
- increase in potassium concentrationse0
- Outcome
- dry matter yielde0
- Direction
- increasede0
- Qualifier
- low nitrogen dosee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under a low nitrogen dose and with increase in potassium concentrations, dry matter yield increased”
t0“elephant grass (Pennisetum purpureum Schum.)”
Claim · model-written summary
With higher nitrogen associated with potassium doses, dry matter yield was suppressed.
- Taxon
- elephant grass (Pennisetum purpureum Schum.)Cenchrus purpureust0
- Treatment
- nitrogen dose increased in associated with potassium dosese0
- Outcome
- dry matter yielde0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“as the nitrogen dose increased in associated with potassium doses, dry matter yield did not augment, but was rather suppressed”
t0“elephant grass (Pennisetum purpureum Schum.)”
Claim · model-written summary
Cuban Pinda averaged 52.66 t ha–1 dry yield.
- Taxon
- elephant grass (Pennisetum purpureum Schum.)Cenchrus purpureust0
- Material
- ‘Cuban Pinda’e0
- Outcome
- average dry yieldse0
- Value
- 52.66e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Cuban Pinda’, ‘IAC Campinas’, and ‘Cameroon’, had average dry yields of 52.66, 50.60, and 48.57 t ha–1, respectively”
t0“elephant grass (Pennisetum purpureum Schum.)”
Claim · model-written summary
IAC Campinas averaged 50.60 t ha–1 dry yield.
- Taxon
- elephant grass (Pennisetum purpureum Schum.)Cenchrus purpureust0
- Material
- ‘IAC Campinas’e0
- Outcome
- average dry yieldse0
- Value
- 50.60e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Cuban Pinda’, ‘IAC Campinas’, and ‘Cameroon’, had average dry yields of 52.66, 50.60, and 48.57 t ha–1, respectively”
t0“elephant grass (Pennisetum purpureum Schum.)”
Claim · model-written summary
Cameroon averaged 48.57 t ha–1 dry yield.
- Taxon
- elephant grass (Pennisetum purpureum Schum.)Cenchrus purpureust0
- Material
- ‘Cameroon’e0
- Outcome
- average dry yieldse0
- Value
- 48.57 t ha–1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Cuban Pinda’, ‘IAC Campinas’, and ‘Cameroon’, had average dry yields of 52.66, 50.60, and 48.57 t ha–1, respectively”
t0“elephant grass (Pennisetum purpureum Schum.)”
Claim · model-written summary
The authors conclude elephant grass is promising as an alternative biomass source.
- Taxon
- elephant grass (Pennisetum purpureum Schum.)Cenchrus purpureust0
- Outcome
- using elephant grass as an alternative source for biomass productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results are highly promising and prove the possibility of using elephant grass as an alternative source for biomass production.”
t0“elephant grass (Pennisetum purpureum Schum.)”
The same questions in other papers
potassium · yield · Cenchrus purpureus (elephant grass)Positive and negative results
1 in the opposite direction
- negative
nitrogen · yield · Cenchrus purpureus (elephant grass)Positive and negative results
2 papers in the same direction as this paper · 12 in the opposite direction
- positive
- positive
- positive
11 papers more in this group
See all 15 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.