Abstract
A field experiment was conducted on an Ultic Haplustalf at the Kanchanaburi Research Station, Muang district, Kanchanaburi province, western Thailand between July 2011 and June 2012. Split plots in a randomized complete block design with four replications were employed, having eight main plots (soil moisture conservation practice and irrigation, W1–W8) and 2 sub plots (fertilization, F1 and F2). Jatropha curcas (KUBP 78-9 Var.), having been planted at 2 × 2 m spacing, was aged 2 yr when the experiment was commenced. The highly significantly heaviest 100-seed weight of 42 g was obtained 1 mth after water irrigation which had been applied at the rate of 16 L/plant, particularly in the treatment with crop residue mulching (W8) but there were no significant differences among the other treatments where irrigation had been applied (W5–W7). Fertilization and a combination between different fertilizers and soil moisture conservation schemes plus irrigation showed no different effect on the weight of 100 seeds throughout the year of measurement. Growing J. curcas with drip-irrigated water at the rate of 16 L/plant applied every 2 d and crop residue mulching (W8) significantly gave the highest seed yield of 1301.3 kg/ha at 15% moisture content. There were no significant differences among the seed yields from the plots applied with the same amount of irrigated water but with no mulching (W7) and half that amount of irrigated water with crop residue mulching (W6), producing yields of 1112.0 kg/ha and 1236.3 kg/ha, respectively. Three-year-old J. curcas gave inferior seed yield when grown with no irrigated water supply (W1–W4). The application of 50–150–150 kg/ha of N–P2O5–K2O significantly induced a higher amount of seed yield (933.9 kg/ha) than did the addition of 93.75–93.75–93.75 kg/ha of N–P2O5–K2O (786.3 kg/ha). The interaction between soil moisture conservation plus irrigation and fertilizer was clear. Applying 50–150–150 kg/ha of N–P2O5–K2O together with water irrigation at the rate of 16 L/plant (W7F2) significantly promoted the greatest seed yield of 1415.2 kg/ha. However, irrigated water can be reduced to 8 L/plant in combination with crop residue mulching and the addition of 50–150–150 kg/ha of N–P2O5–K2O (W6F2) and the plants still performed well, producing a seed yield of 1356.4 kg/ha. In addition, with no irrigation, none of the moisture conservation practices (W2–W4) showed any significant effects regardless of the different fertilizers applied.
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Claims 13
Claim · model-written summary
Water irrigation at 16 L/plant, particularly with crop residue mulching (W8), gave the highest 100-seed weight of 42 g in Jatropha curcas.
- Taxon
- Jatropha curcas
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Jatropha curcast0 - Treatment
- water irrigation which had been applied at the rate of 16 L/plante0
- Outcome
- 100-seed weighte0
- Direction
- heavieste0
- Value
- 42 ge0
- Qualifier
- crop residue mulching (W8)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_tree_at_Samedha.jpg?width=500)
Verbatim
t0“Jatropha curcas”
e0“The highly significantly heaviest 100-seed weight of 42 g was obtained 1 mth after water irrigation which had been applied at the rate of 16 L/plant, particularly in the treatment with crop residue mulching (W8)”
Claim · model-written summary
There were no significant differences in 100-seed weight among the other irrigated treatments (W5-W7).
- Taxon
- Jatropha curcasJatropha curcast0
- Treatment
- irrigatione0
- Outcome
- 100-seed weighte0
- Direction
- no significant differencese0
- Qualifier
- W5–W7e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Jatropha curcas”
e0“100-seed weight of 42 g was obtained 1 mth after water irrigation which had been applied at the rate of 16 L/plant, particularly in the treatment with crop residue mulching (W8) but there were no significant differences among the other treatments where irrigation had been applied (W5–W7)”
Claim · model-written summary
Fertilization had no different effect on the weight of 100 seeds of Jatropha curcas throughout the year of measurement.
- Taxon
- Jatropha curcasJatropha curcast0
- Treatment
- Fertilizatione0
- Outcome
- weight of 100 seedse0
- Direction
- no different effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Jatropha curcas”
e0“Fertilization and a combination between different fertilizers and soil moisture conservation schemes plus irrigation showed no different effect on the weight of 100 seeds throughout the year of measurement”
Claim · model-written summary
Combinations of different fertilizers with soil moisture conservation schemes plus irrigation had no different effect on 100-seed weight.
- Taxon
- Jatropha curcasJatropha curcast0
- Treatment
- a combination between different fertilizers and soil moisture conservation schemes plus irrigatione0
- Outcome
- weight of 100 seedse0
- Direction
- no different effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Jatropha curcas”
e0“Fertilization and a combination between different fertilizers and soil moisture conservation schemes plus irrigation showed no different effect on the weight of 100 seeds throughout the year of measurement”
Claim · model-written summary
Drip irrigation at 16 L/plant every 2 days with crop residue mulching (W8) gave the highest seed yield, 1301.3 kg/ha at 15% moisture content.
- Taxon
- J. curcasJatropha curcase0
- Treatment
- drip-irrigated water at the rate of 16 L/plant applied every 2 d and crop residue mulching (W8)e0
- Outcome
- seed yielde0
- Direction
- higheste0
- Value
- 1301.3 kg/hae0
- Qualifier
- 15% moisture contente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growing J. curcas with drip-irrigated water at the rate of 16 L/plant applied every 2 d and crop residue mulching (W8) significantly gave the highest seed yield of 1301.3 kg/ha at 15% moisture content”
Claim · model-written summary
Seed yield with the same irrigation but no mulching (W7) was 1112.0 kg/ha, not significantly different from W8.
- Taxon
- Jatropha curcasJatropha curcast0
- Treatment
- same amount of irrigated water but with no mulching (W7)e0
- Outcome
- seed yieldse0
- Direction
- no significant differencese0
- Value
- 1112.0 kg/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Jatropha curcas”
e0“There were no significant differences among the seed yields from the plots applied with the same amount of irrigated water but with no mulching (W7) and half that amount of irrigated water with crop residue mulching (W6), producing yields of 1112.0 kg/ha and 1236.3 kg/ha, respectively”
Claim · model-written summary
Seed yield with half the irrigation plus crop residue mulching (W6) was 1236.3 kg/ha, not significantly different from W8.
- Taxon
- Jatropha curcasJatropha curcast0
- Treatment
- half that amount of irrigated water with crop residue mulching (W6)e0
- Outcome
- seed yieldse0
- Direction
- no significant differencese0
- Value
- 1236.3 kg/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Jatropha curcas”
e0“There were no significant differences among the seed yields from the plots applied with the same amount of irrigated water but with no mulching (W7) and half that amount of irrigated water with crop residue mulching (W6), producing yields of 1112.0 kg/ha and 1236.3 kg/ha, respectively”
Claim · model-written summary
Three-year-old J. curcas gave inferior seed yield with no irrigated water supply (W1-W4).
- Taxon
- J. curcasJatropha curcase0
- Treatment
- no irrigated water supplye0
- Outcome
- seed yielde0
- Direction
- inferiore0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Three-year-old J. curcas gave inferior seed yield when grown with no irrigated water supply (W1–W4)”
Claim · model-written summary
50-150-150 kg/ha N-P2O5-K2O significantly gave higher seed yield (933.9 kg/ha) than 93.75-93.75-93.75 kg/ha (786.3 kg/ha).
- Taxon
- Jatropha curcasJatropha curcast0
- Treatment
- 50–150–150 kg/ha of N–P2O5–K2Oe0
- Outcome
- seed yielde0
- Direction
- highere0
- Value
- 933.9 kg/hae0
- Qualifier
- 786.3 kg/hae0
- Comparator
- 93.75–93.75–93.75 kg/ha of N–P2O5–K2Oe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Jatropha curcas”
e0“The application of 50–150–150 kg/ha of N–P2O5–K2O significantly induced a higher amount of seed yield (933.9 kg/ha) than did the addition of 93.75–93.75–93.75 kg/ha of N–P2O5–K2O (786.3 kg/ha)”
Claim · model-written summary
The interaction between soil moisture conservation plus irrigation and fertilizer was clear.
- Taxon
- Jatropha curcasJatropha curcast0
- Treatment
- soil moisture conservation plus irrigation and fertilizere0
- Outcome
- interactione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Jatropha curcas”
e0“The interaction between soil moisture conservation plus irrigation and fertilizer was clear”
Claim · model-written summary
Applying 50-150-150 kg/ha N-P2O5-K2O with irrigation at 16 L/plant (W7F2) significantly gave the greatest seed yield, 1415.2 kg/ha.
- Taxon
- Jatropha curcasJatropha curcast0
- Treatment
- 50–150–150 kg/ha of N–P2O5–K2O together with water irrigation at the rate of 16 L/plant (W7F2)e0
- Outcome
- seed yielde0
- Direction
- greateste0
- Value
- 1415.2 kg/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Jatropha curcas”
e0“Applying 50–150–150 kg/ha of N–P2O5–K2O together with water irrigation at the rate of 16 L/plant (W7F2) significantly promoted the greatest seed yield of 1415.2 kg/ha”
Claim · model-written summary
Irrigation can be reduced to 8 L/plant with crop residue mulching and 50-150-150 kg/ha N-P2O5-K2O (W6F2) while plants still performed well, yielding 1356.4 kg/ha.
- Taxon
- Jatropha curcasJatropha curcast0
- Outcome
- irrigated water can be reduced to 8 L/plante0
- Value
- 1356.4 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Jatropha curcas”
e0“irrigated water can be reduced to 8 L/plant in combination with crop residue mulching and the addition of 50–150–150 kg/ha of N–P2O5–K2O (W6F2) and the plants still performed well, producing a seed yield of 1356.4 kg/ha”
Claim · model-written summary
With no irrigation, none of the moisture conservation practices (W2-W4) had significant effects regardless of fertilizer.
- Taxon
- Jatropha curcasJatropha curcast0
- Treatment
- moisture conservation practices (W2–W4)e0
- Direction
- none ofe0
Not reportedComparatorOutcome
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Jatropha curcas”
e0“with no irrigation, none of the moisture conservation practices (W2–W4) showed any significant effects regardless of the different fertilizers applied”
The same questions in other papers
soil water · yield · Jatropha curcasPositive and negative results
1 in the opposite direction
- positive
fertilization · yield · Jatropha curcasPositive and negative results
1 paper in the same direction as this paper · 14 in the opposite direction
- positive
- positive
- positive
12 papers more in this group
See all 16 papers →irrigation · yield · Jatropha curcasResults agree
2 papers in the same direction as this paper
- positive
- positive
organic · yield · Jatropha curcasResults agree
2 papers in the same direction as this paper
- positive
- positive
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.