Abstract
ABSTRACT Afield experiment was conducted in South Louisiana during 1980-1982 on a 3.24 ha tract of Commerce silt loam soil to determine the yield response of sugarcane to stalk density and subsurface drainage treatments. Four sugarcane planting patterns, each with and without subsurface drainage were as follows: (a) conventional - cane planted in a single V-furrow on seedbeds 1.8 m apart, (b) wide furrow - cane planted in 0.45 m wide furrows on seedbeds 1.8 m apart, (c) triple drill - cane planted in three V-furrows spaced 0.3 m apart on seedbeds 1.8 m apart, and d) 0.6-m V-furrows -cane planted in single V-furrows 0.6 m apart. Each treatment was replicated four times. Three crops were harvested - plant, first ratoon, and second ratoon in 1980, 1981, and 1982, respectively. Yields of sugarcane were significantly different among planting patterns in plant and second ratoon crops but not in the first ratoon. The 0.6 m V-furrow treatment had the highest yield of sugarcane in the plant crop, 124 t/ha, which was 70% more than the conventional V-furrow treatment, and the lowest yield in second ratoon, 38.8 t/ha, which was 30% less than conventional. In a combined analysis using all three years of data, the triple drill treatments had the highest yield of sugarcane among planting patterns, 79.2 t/ha, which was 17% more than the conventional treatment. Sugar yield was significantly different among planting patterns only in the plant crop. Sugar yield from the 0.6 m V-furrow was highest among planting patterns, 14.9 t/ha, which was 55% more than the conventional treatment. Sugarcane yields from undrained plots were significantly lower than those in drained plots in second ratoon and in a combined analysis for the 3-year cycle. Sugarcane yields from drained plots in the second ratoon crop and in the combined analysis were 45% and 10% more, respectively, than yields from the undrained plots. Sugar yields were significantly different due to drainage treatments in second ratoon only, when yields from the drained plots were 26% more than yields from the undrained plots. The rate at which sugarcane yields declined in ratoon crops was slowed by subsurface drainage. Although this experiment showed that non-conventional planting patterns increased yields in the plant crop, additional work is needed on maintaining high yields into first and second ratoons before these new planting practices can be recommended to sugarcane growers. Subsurface drainage should be included in sugarcane production practices to reduce the adverse effects of high water table on sugarcane and sugar yields.
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Claims 12
Claim · model-written summary
Sugarcane yields differed significantly among planting patterns in the plant and second ratoon crops but not in the first ratoon.
- Taxon
- sugarcanee1
- Organ / stage
- plant and second ratoon cropse1
- Treatment
- planting patternse1
- Outcome
- Yieldse1
Not reportedComparatorDirection
Verbatim
e1“Yields of sugarcane were significantly different among planting patterns in plant and second ratoon crops but not in the first ratoon”
Claim · model-written summary
The 0.6 m V-furrow treatment gave the highest sugarcane yield in the plant crop, 124 t/ha, 70% more than the conventional V-furrow treatment.
Verbatim
e2“The 0.6 m V-furrow treatment had the highest yield of sugarcane in the plant crop, 124 t/ha, which was 70% more than the conventional V-furrow treatment”
Claim · model-written summary
The 0.6 m V-furrow treatment gave the lowest sugarcane yield in the second ratoon, 38.8 t/ha, 30% less than conventional.
Verbatim
e2“The 0.6 m V-furrow treatment had the highest yield of sugarcane in the plant crop, 124 t/ha, which was 70% more than the conventional V-furrow treatment”
e3“the lowest yield in second ratoon, 38.8 t/ha, which was 30% less than conventional”
Claim · model-written summary
The triple drill planting pattern gave the highest sugarcane yield in the combined three-year analysis, 79.2 t/ha, 17% more than conventional.
Verbatim
e4“the triple drill treatments had the highest yield of sugarcane among planting patterns, 79.2 t/ha, which was 17% more than the conventional treatment”
e5“In a combined analysis using all three years of data”
Claim · model-written summary
The 0.6 m V-furrow planting pattern gave the highest sugar yield, 14.9 t/ha, 55% more than conventional.
Verbatim
e1“Yields of sugarcane were significantly different among planting patterns in plant and second ratoon crops but not in the first ratoon”
e6“Sugar yield from the 0.6 m V-furrow was highest among planting patterns, 14.9 t/ha, which was 55% more than the conventional treatment”
Claim · model-written summary
Sugarcane yields from undrained plots were significantly lower than from drained plots in the second ratoon and in the combined analysis.
Verbatim
e0“Sugarcane yields from undrained plots were significantly lower than those in drained plots in second ratoon and in a combined analysis for the 3-year cycle”
e2“each with and without subsurface drainage”
Claim · model-written summary
Sugarcane yields from drained plots in the second ratoon crop were 45% more than from undrained plots.
Verbatim
e1“Sugarcane yields from drained plots in the second ratoon crop and in the combined analysis were 45% and 10% more, respectively, than yields from the undrained plots”
e2“each with and without subsurface drainage”
Claim · model-written summary
Sugarcane yields from drained plots in the combined analysis were 10% more than from undrained plots.
Verbatim
e1“Sugarcane yields from drained plots in the second ratoon crop and in the combined analysis were 45% and 10% more, respectively, than yields from the undrained plots”
e2“each with and without subsurface drainage”
Claim · model-written summary
Sugar yields differed significantly with drainage in the second ratoon only, 26% more from drained plots than from undrained plots.
Verbatim
e1“Yields of sugarcane were significantly different among planting patterns in plant and second ratoon crops but not in the first ratoon”
e3“Sugar yields were significantly different due to drainage treatments in second ratoon only, when yields from the drained plots were 26% more than yields from the undrained plots”
Claim · model-written summary
Subsurface drainage slowed the rate at which sugarcane yields declined in ratoon crops.
- Taxon
- sugarcanee4
- Organ / stage
- ratoon cropse4
- Treatment
- subsurface drainagee2
- Outcome
- rate at which sugarcane yields declined in ratoon cropse4
- Direction
- slowede4
Not reportedComparator
Verbatim
e4“The rate at which sugarcane yields declined in ratoon crops was slowed by subsurface drainage”
e2“each with and without subsurface drainage”
Claim · model-written summary
Non-conventional planting patterns increased sugarcane yields in the plant crop.
- Taxon
- sugarcanee1
- Organ / stage
- plant crope5
- Treatment
- non-conventional planting patternse5
- Outcome
- yieldse5
- Direction
- increasede5
Not reportedComparator
Verbatim
e1“Yields of sugarcane were significantly different among planting patterns in plant and second ratoon crops but not in the first ratoon”
e5“Although this experiment showed that non-conventional planting patterns increased yields in the plant crop”
Claim · model-written summary
Subsurface drainage should be included in sugarcane production practices to reduce the adverse effects of a high water table.
Verbatim
e6“Subsurface drainage should be included in sugarcane production practices to reduce the adverse effects of high water table on sugarcane and sugar yields”
The same questions in other papers
transplanting · yield · Saccharum officinarum (sugarcane)Positive and negative results
14 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- no effect
14 papers more in this group
See all 18 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.