Planting Date, Water Management, and Maturity Length Relations for Irrigated Grain Sorghum

1993 ◽  
Vol 36 (4) ◽  
pp. 1123-1129 ◽  
Author(s):  
R. R. Allen ◽  
J. T. Musick

2019 ◽  
Vol 112 (6) ◽  
pp. 2731-2736 ◽  
Author(s):  
Nicholas J Seiter ◽  
Anne D Miskelley ◽  
Gus M Lorenz ◽  
Neelendra K Joshi ◽  
Glenn E Studebaker ◽  
...  

Abstract The sugarcane aphid, Melanaphis sacchari (Zehntner) (Hemiptera: Aphididae), has become a major pest of grain sorghum, Sorghum bicolor (L.) Moench, in the United States in recent years. Feeding by large densities of sugarcane aphids causes severe damage, which can lead to a total loss of yield in extreme cases. Our objective was to determine the effect of grain sorghum planting date on sugarcane aphid population dynamics and their potential to reduce yields. We conducted field experiments from 2015 to 2017 in which an aphid-susceptible grain sorghum hybrid was planted at four different dates, which encompassed the typical range of planting dates used in Arkansas production systems. Plots were either protected from sugarcane aphid feeding using foliar insecticide sprays, or left untreated to allow natural populations of sugarcane aphids to colonize and reproduce freely. Planting date impacted both the magnitude and severity of sugarcane aphid infestations, with the highest population densities (and subsequent reductions in sorghum yield) generally occurring on plots that were planted in May or June. Sugarcane aphid feeding reduced yields in the untreated plots in two of the four planting date categories we tested. Earlier planting generally resulted in less sugarcane aphid damage and improved yields compared with later planting dates. While the effect of planting date on sugarcane aphid populations is likely to vary by region, sorghum producers should consider grain sorghum planting date as a potential cultural tactic to reduce the impact of sugarcane aphid.



2016 ◽  
Vol 108 (1) ◽  
pp. 162-170 ◽  
Author(s):  
M. Scott Wells ◽  
S. Chris Reberg-Horton ◽  
Steven B. Mirsky


2019 ◽  
Vol 112 (6) ◽  
pp. 2719-2730 ◽  
Author(s):  
Phillip J Haar ◽  
G David Buntin ◽  
Alana Jacobson ◽  
Adrian Pekarcik ◽  
M O Way ◽  
...  

Abstract The invasive sugarcane aphid, Melanaphis sacchari (Zehntner), is a devastating new pest of grain sorghum. Studies were conducted utilizing an integrated approach of four management tactics: planting date, insecticidal seed treatment, a foliar-applied insecticide, and plant resistance. Experiments were conducted in 2016 and 2017 at Griffin, Tifton, and Plains Georgia, and in 2016 in Texas, Alabama, and Oklahoma, United States. Early planting was effective in reducing damage and increasing yields when compared to the late planting. Use of a resistant variety reduced cumulative aphid-days, plant injury and usually prevented significant yield loss. Foliar application of flupyradifurone when aphids reached an economic threshold, was an effective management tactic preventing aphid injury and yield loss. Use of clothianidin seed treatment also reduced aphid injury and yield loss of the susceptible hybrid but generally did not prevent injury and yield loss of the resistant hybrid. We conclude that an earlier planting date coupled with a resistant variety and judicious use of an efficacious foliar-applied insecticide can effectively manage sugarcane aphid on grain sorghum. An insecticide seed treatment also may be useful to reduce the risk of sugarcane aphid damage to seedlings of susceptible hybrids.



1976 ◽  
Vol 68 (2) ◽  
pp. 260-263 ◽  
Author(s):  
H. A. Fribourg ◽  
W. E. Bryan ◽  
G. M. Lessman ◽  
D. M. Manning




jpa ◽  
1999 ◽  
Vol 12 (1) ◽  
pp. 78-85
Author(s):  
J. R. Williams ◽  
D. R. DeLano ◽  
R. V. Llewelyn ◽  
R. W. Heiniger ◽  
R. L. Vanderlip


Weed Science ◽  
1991 ◽  
Vol 39 (4) ◽  
pp. 660-666 ◽  
Author(s):  
Robert E. Frans ◽  
Marilyn R. Mcclelland ◽  
Diana K. Horton ◽  
Billy R. Corbin ◽  
Ronald E. Talbert

Four-year cropping sequences of continuous cotton, cotton-soybeans-soybeans-cotton, continuous soybeans, soybeans-grain sorghum-soybeans-grain sorghum, and cotton-rice-cotton-rice were treated each year with high and low levels of herbicides to control johnsongrass. High levels of herbicide were necessary to control johnsongrass in continuous cotton, cotton-soybeans-soybeans-cotton, continuous soybeans, and the soybeans-grain sorghum rotation. Johnsongrass was not eradicated, however, after 4 years of cropping sequences with high herbicide inputs. Both low and high levels of herbicide coupled with water management required for rice production controlled johnsongrass and prevented rice yield reductions.



age ◽  
2021 ◽  
Vol 4 (2) ◽  
Author(s):  
Anna Zander ◽  
Josh Lofton ◽  
Chase Harris ◽  
Sarah Kezar


1966 ◽  
Vol 9 (3) ◽  
pp. 0369-0371 ◽  
Author(s):  
J. T. Musick and W. H. Sletten


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