Abstract
The physic nut tree (Jatropha curcas) is an oilseed species with potential for biodiesel production. We evaluated the effect of soil acidity indices on nutrient uptake for optimal growth in physic nut plants grown on acidic soils under greenhouse conditions. Two soils were used in the experiment. Maximum growth was obtained with the application of 1.05 g lime kg-1 for both soils. Maximum growth of the physic nut plants occurred under the following conditions: pH of water = 6.1, calcium (Ca2+) = 17.0 mmolc kg−1, magnesium (Mg2+) = 5.7 mmolc kg−1, acidity saturation = 10.3%, base saturation = 52.3%, Ca saturation = 36.0%, Mg saturation = 12.0% and potassium (K) saturation = 3.8%. Furthermore, the nitrogen (N) requirement of physic nut trees was shown to be high, and to a lesser degree, Ca and Mg requirements were also high, suggesting that liming is very important in crop cultivation of this species.
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Claims 5
Claim · model-written summary
Maximum growth of physic nut was obtained with 1.05 g lime kg-1 on both soils.
- Taxon
- Jatropha curcas
_tree_at_Samedha.jpg?width=60)
Jatropha curcase0 - Treatment
- application of 1.05 g lime kg-1e1
- Outcome
- growthe1
- Direction
- Maximume1
- Value
- 1.05 g lime kg-1e1
- Setting
- greenhouse conditionse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_tree_at_Samedha.jpg?width=500)
Verbatim
e0“The physic nut tree (Jatropha curcas)”
e1“Maximum growth was obtained with the application of 1.05 g lime kg-1 for both soils”
e2“under greenhouse conditions”
Claim · model-written summary
Maximum growth of physic nut occurred under soil conditions of pH of water 6.1 and calcium 17.0 mmolc kg−1 among others.
- Taxon
- Jatropha curcasJatropha curcase0
- Treatment
- the following conditionse3
- Outcome
- growthe3
- Direction
- Maximume3
- Qualifier
- pH of water = 6.1, calcium (Ca2+) = 17.0 mmolc kg−1e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The physic nut tree (Jatropha curcas)”
e3“Maximum growth of the physic nut plants occurred under the following conditions”
e4“pH of water = 6.1, calcium (Ca2+) = 17.0 mmolc kg−1”
Claim · model-written summary
Nitrogen requirement of physic nut trees is high.
- Taxon
- Jatropha curcasJatropha curcase0
- Outcome
- nitrogen (N) requiremente5
- Direction
- highe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The physic nut tree (Jatropha curcas)”
e5“the nitrogen (N) requirement of physic nut trees was shown to be high”
Claim · model-written summary
Calcium and magnesium requirements of physic nut are high, to a lesser degree than nitrogen.
- Taxon
- Jatropha curcasJatropha curcase0
- Outcome
- Ca and Mg requirementse6
- Direction
- highe6
- Qualifier
- to a lesser degreee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The physic nut tree (Jatropha curcas)”
e6“to a lesser degree, Ca and Mg requirements were also high”
Claim · model-written summary
Liming is very important in crop cultivation of physic nut.
- Taxon
- Jatropha curcasJatropha curcase0
- Outcome
- liming is very important in crop cultivatione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The physic nut tree (Jatropha curcas)”
e7“suggesting that liming is very important in crop cultivation of this species”
The same questions in other papers
lime · growth · Jatropha curcasPositive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- 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.