Abstract
"Shika" (indigenous, V,) and "Ngala" (introduction, V2) varieties of elephant grass (Pennisetum purpureum Schum.) field planted at 60 x 90, 60 x 60 or 60 x 30 cm spacing and fertilized at 0, 100, 200 or 400kg N/ha/yr, were examined for dry matTer (DM) yield, crude protein (CP) content, CP yield, nitrogen (N) recovery and stand persistence at Shika during the 1975 and 1976 growing seasons. The highest DM yield resulted from 60 x 30 cm spacing/400kg N combination but the 60 x 60 cm spacing (27,800 plants/ha) with 200kg N appeared optimum for yield. V produced 4.3 to 21.0t DM and V2 2.8 to 17.41 DM/ha/yr over the range of population densities and fertilizer levels investigated. DM yield per kg N applied rose with increasing population density (V, only) and decreasing N rate, the highest value of 49kg being recorded for V t. Mean herbage CP content varied from 7.0% without N to 9.7% with 400kg N/ha but the highest value of 11.0% was obtained from V2 planted at 60 x 90cm. For both grasses, N increased annual CP yield 1.2— 4.5—Fold. The highest apparent fertilizer N recovery of 76.3% occurred at 200kg N/ha while plants survived best at 60 x 60cm spacing.
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Claims 12
Claim · model-written summary
The highest DM yield of elephant grass resulted from the 60 x 30 cm spacing with 400 kg N combination.
- Taxon
- elephant grass
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Cenchrus purpureuse0 - Treatment
- 60 x 30 cm spacing/400kg N combinatione1
- Outcome
- DM yielde1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“elephant grass (Pennisetum purpureum Schum.)”
e1“The highest DM yield resulted from 60 x 30 cm spacing/400kg N combination”
Claim · model-written summary
The 60 x 60 cm spacing (27,800 plants/ha) with 200 kg N appeared optimum for elephant grass yield.
- Taxon
- elephant grassCenchrus purpureuse0
- Treatment
- 60 x 60 cm spacing (27,800 plants/ha) with 200kg Ne1
- Outcome
- optimum for yielde1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“elephant grass (Pennisetum purpureum Schum.)”
e1“the 60 x 60 cm spacing (27,800 plants/ha) with 200kg N appeared optimum for yield”
Claim · model-written summary
The Shika variety produced 4.3 to 21.0 t DM per ha per year across the densities and fertilizer levels.
- Taxon
- elephant grassCenchrus purpureuse0
- Material
- Shikae1
- Outcome
- DMe2
- Value
- 4.3 to 21.0te2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“elephant grass (Pennisetum purpureum Schum.)”
e1“"Shika" (indigenous”
e2“V produced 4.3 to 21.0t DM”
Claim · model-written summary
The Ngala variety produced 2.8 to 17.41 DM per ha per year across the densities and fertilizer levels.
- Taxon
- elephant grassCenchrus purpureuse0
- Material
- Ngalae1
- Outcome
- DMe2
- Value
- 2.8 to 17.41 DM/ha/yre2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“elephant grass (Pennisetum purpureum Schum.)”
e1“"Ngala" (introduction”
e2“V2 2.8 to 17.41 DM/ha/yr”
Claim · model-written summary
DM yield per kg N applied rose with increasing population density (variety V1 only).
- Taxon
- elephant grassCenchrus purpureuse0
- Treatment
- increasing population densitye1
- Outcome
- DM yield per kg N appliede1
- Direction
- rosee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“elephant grass (Pennisetum purpureum Schum.)”
e1“DM yield per kg N applied rose with increasing population density (V, only)”
Claim · model-written summary
DM yield per kg N applied rose with decreasing N rate.
- Taxon
- elephant grassCenchrus purpureuse0
- Treatment
- decreasing N ratee1
- Outcome
- DM yield per kg N appliede1
- Direction
- rosee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“elephant grass (Pennisetum purpureum Schum.)”
e1“DM yield per kg N applied rose with increasing population density (V, only) and decreasing N rate”
Claim · model-written summary
The highest DM yield per kg N applied, 49 kg, was recorded for variety V1.
- Taxon
- elephant grassCenchrus purpureuse0
- Outcome
- DM yield per kg N appliede1
- Direction
- higheste2
- Value
- 49kge2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“elephant grass (Pennisetum purpureum Schum.)”
e1“DM yield per kg N applied rose”
e2“the highest value of 49kg being recorded for V t”
Claim · model-written summary
Mean herbage CP content rose from 7.0% without N to 9.7% with 400 kg N/ha.
- Taxon
- elephant grassCenchrus purpureuse0
- Treatment
- 400kg N/hae1
- Outcome
- Mean herbage CP contente1
- Direction
- increaseinferrede1
- Value
- 9.7%e1
- Qualifier
- 7.0%e1
- Comparator
- without Ne1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“elephant grass (Pennisetum purpureum Schum.)”
e1“Mean herbage CP content varied from 7.0% without N to 9.7% with 400kg N/ha”
Claim · model-written summary
The highest CP content, 11.0%, was obtained from variety V2 planted at 60 x 90 cm.
- Taxon
- elephant grassCenchrus purpureuse0
- Material
- V2e1
- Treatment
- 60 x 90cme1
- Outcome
- Mean herbage CP contente1
- Direction
- higheste1
- Value
- 11.0%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“elephant grass (Pennisetum purpureum Schum.)”
e1“Mean herbage CP content varied from 7.0% without N to 9.7% with 400kg N/ha but the highest value of 11.0% was obtained from V2 planted at 60 x 90cm”
Claim · model-written summary
For both grasses, N increased annual CP yield 1.2- to 4.5-fold.
- Taxon
- elephant grassCenchrus purpureuse0
- Treatment
- Ne1
- Outcome
- annual CP yielde1
- Direction
- increasede1
- Value
- 1.2— 4.5—Folde1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“elephant grass (Pennisetum purpureum Schum.)”
e1“For both grasses, N increased annual CP yield 1.2— 4.5—Fold”
Claim · model-written summary
The highest apparent fertilizer N recovery, 76.3%, occurred at 200 kg N/ha.
- Taxon
- elephant grassCenchrus purpureuse0
- Treatment
- 200kg N/hae1
- Outcome
- apparent fertilizer N recoverye1
- Direction
- higheste1
- Value
- 76.3%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“elephant grass (Pennisetum purpureum Schum.)”
e1“The highest apparent fertilizer N recovery of 76.3% occurred at 200kg N/ha”
Claim · model-written summary
Plants survived best at 60 x 60 cm spacing.
- Taxon
- elephant grassCenchrus purpureuse0
- Treatment
- 60 x 60cm spacinge1
- Outcome
- survived beste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“elephant grass (Pennisetum purpureum Schum.)”
e1“plants survived best at 60 x 60cm spacing”
The same questions in other papers
density · growth · Cenchrus purpureus (elephant grass)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
nitrogen · quality: protein · Cenchrus purpureus (elephant grass)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 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.