Effects of row spacing and plant population on sweet sorghum yield

Martin, Phyllis A. W.; Kelleher, FM

doi:10.1071/ea9840386

Cited by 19 publications

(10 citation statements)

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“…They observed dry biomass yields from 28 to 33 t ha −1 , which would be similar to our yields if converted to dry weight basis. The findings in our row spacing study were similar to what other researchers have observed (Broadhead and Freeman, 1979; Martin and Kelleher, 1984). Broadhead and Freeman (1979) noted that rows spaced at 52.5 cm resulted in higher yields of gross and stripped stalks, and sugar per hectare than 105 cm rows.…”

Section: Resultssupporting

confidence: 93%

“…Also, Jones and Johnson (1991) in the High Plains of Texas observed that increasing row spacing to >76 cm decreased biomass production, leaf area index (LAI), and grain yield. The relatively small amount of row spacing research that has been conducted on sweet sorghum suggests narrower row spacing should increase biomass yield (Broadhead and Freeman, 1979; Martin and Kelleher, 1984). In Mississippi, Broadhead and Freeman (1979) noted that rows spaced at 52.5 cm resulted in higher yields of gross and stripped stalks, and sugar per hectare than 105 cm rows.…”

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Developing Row Spacing and Planting Density Recommendations for Rainfed Sweet Sorghum Production in the Southern Plains

et al. 2012

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Sweet sorghum [Sorghum bicolor (L.) Moench] is gaining in popularity as an alternative biofuel feedstock. Th e potential of sweet sorghum for low nutrient and water requirement appears to fi t well within the Southern Plains arid climate. Th e objectives of this project were to determine the optimum row spacing and plant population for sweet sorghum production in the Southern Plains. Th ree locations in Oklahoma were established, ranging in in-season precipitation from 240 to 500 mm west to east, respectively. Soils at locations ranged from silt loams to loams. At each location two separate studies were conducted: row spacing and planting density. To determine the eff ect of row spacing on sweet sorghum production two varieties, Topper and M81, were evaluated in spacings of 20, 38, and 76 cm. To determine optimum plant density, plots were arranged in a randomized complete block design and seeded at rates of 74,100 to 172,900 seeds ha -1 in 20 and 76-cm row spacings using one cultivar, M81. Plots were harvested at soft dough stage to obtain fresh yield. Samples were pressed to determine juice yield and brix values. Using a row spacing of <76 cm is advantageous under average to high yield potential (>60 t ha -1 ), while in extremely high yield potential areas (>100 t ha -1 ) a row spacing of 20 cm would be better suited. For row spacings of 20 and 76 cm a wide range of planting densities would be acceptable due to sweet sorghums' ability to tiller.

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Section: Resultssupporting

confidence: 93%

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confidence: 99%

Developing Row Spacing and Planting Density Recommendations for Rainfed Sweet Sorghum Production in the Southern Plains

et al. 2012

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“…Data from a series of experiments conducted in the USA suggest that the use of narrow row spacing can increase sweet sorghum yields (from 25% to 50%) (Kresovich and Lawhon, 1981). Moreover, in East Australia Martin and Kelleher (1984) indicated that narrow row spacing at 30 cm gave higher sweet sorghum yields compared to 75 cm and 105 cm. Nevertheless, the determination of the optimum row spacing requires taking into account the productive potential of the location (Godsey et al, 2012;Habyarimana et al, 2004a).…”

Section: Introductionmentioning

confidence: 99%

Double row spacing and drip irrigation as technical options in energy sorghum management

et al. 2014

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The effect of two row spacing configurations and four water supply levels was investigated on sweet and fibre sorghum in Central Italy for two consecutive years. Results highlighted the influence of both irrigation and row spatial configuration on crop productivity. Indeed, several studies have pointed out the positive response of sorghum to irrigation in Mediterranean climate, as in this environment water stress represents one of the main limiting factors on crop productivity. On the other hand, few attempts have been made to explore the role of row spacing on energy sorghum productivity. Results outlined an average increase in sorghum dry biomass yield ranging from +23% to +79% at variable rates of water supply as compared to rainfed control. The positive effect of irrigation was also observed on leaf area index and radiation use efficiency. Moreover, we observed a crop yield increase, from 9% to 20%, under double row spacing compared to the standard planting pattern (i.e. single row spacing). Finally, it was confirmed the efficient use of water by sorghum and the great ability of sorghum to increase its biomass yield in response to increasing volumes of water supplied. Therefore, this work suggests how row spacing configuration and drip irrigation could be feasible technical options to increase sorghum biomass yields in Mediterranean environments. These techniques should be experienced by farmers towards a sustainable intensification of current cropping systems.

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“…For example, sweet sorghum processors prefer thick stalks that mimic sugarcane; however, higher yield is typically associated with higher plant densities [51]. Furthermore, row spacing modifications are limited to those that fit within existing harvesting equipment.…”

Section: Establishmentmentioning

confidence: 99%

Sorghum

Rooney

2014

Cellulosic Energy Cropping Systems

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Effects of row spacing and plant population on sweet sorghum yield

Cited by 19 publications

References 0 publications

Developing Row Spacing and Planting Density Recommendations for Rainfed Sweet Sorghum Production in the Southern Plains

Developing Row Spacing and Planting Density Recommendations for Rainfed Sweet Sorghum Production in the Southern Plains

Double row spacing and drip irrigation as technical options in energy sorghum management

Sorghum

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