Abstract
Sweet sorghum [ Sorghum bicolor (L.) Moench] has potential as a bioenergy crop for producing food, fiber, and fermentable sugar. Unlike dryland grain sorghum, little information is available on the influence of staggered planting and genotypes, especially in semiarid tropical environments. The objectives of the present study were (i) to quantify the effects of planting time and genotype on stalk and biomass yields, juice sugar quality, and (ii) to identify the most productive genotypes and planting windows for sustainable feedstock supply. Four commercial sweet sorghum genotypes (SSV84, SSV74, CSV19SS, and CSH22SS) were planted on five planting dates (1 June, 16 June, 1 July, 16 July, and 1 August) during the rainy (June–October) season of 2008 and 2009 in Hyderabad (17°27´ N, 78°28´ E), India. Planting in early and mid‐June produced significantly ( P ≤ 0.05) higher fresh stalk yield and grain yield than later planting dates. Commercial hybrid CSH22SS produced significantly more stalk, grain, sugar, and ethanol yield over genotypes SSV84 or SSV74. Based on the stalk yield, juice sugar quality, sugar, and ethanol yields, the optimum planting dates for sweet sorghum in semiarid tropical climate is early June to early July. Planting sweet sorghum during this time allows more feedstock to be harvested and hence extends the period for sugar mill operation by about 1 mo, that is, from the first to the last week of October.
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Claims 4
Claim · model-written summary
Early and mid-June planting gave higher fresh stalk and grain yields.
Verbatim
e0“Planting in early and mid‐June produced significantly ( P ≤ 0.05) higher fresh stalk yield and grain yield than later planting dates”
e1“Sweet sorghum [ Sorghum bicolor (L.) Moench]”
Claim · model-written summary
CSH22SS produced more stalk and grain yield than SSV84 or SSV74.
Verbatim
e0“Commercial hybrid CSH22SS produced significantly more stalk, grain, sugar, and ethanol yield over genotypes SSV84 or SSV74”
e1“Sweet sorghum [ Sorghum bicolor (L.) Moench]”
Claim · model-written summary
The authors identify early June to early July as optimal planting dates.
Verbatim
e0“optimum planting dates for sweet sorghum in semiarid tropical climate is early June to early July”
Claim · model-written summary
Planting in this window extends sugar mill operation by about one month.
Verbatim
e0“Planting sweet sorghum during this time allows more feedstock to be harvested and hence extends the period for sugar mill operation by about 1 mo”
e1“from the first to the last week of October”
The same questions in other papers
sowing time · yield · SorghumPositive and negative results
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