Effect of Planting Date and Maturity Group on Soybean Yield Response to Injury byMegacopta cribraria(Hemiptera: Plataspidae)

2015 ◽  
Vol 109 (1) ◽  
pp. 207-212 ◽  
Author(s):  
J. L. Blount ◽  
G. D. Buntin ◽  
P. M. Roberts
2011 ◽  
Vol 25 (1) ◽  
pp. 38-43 ◽  
Author(s):  
Joseph M. Boudreaux ◽  
James L. Griffin

Research was conducted over 2 yr to evaluate soybean response to harvest aid herbicide treatments paraquat at 0.28 kg ai ha−1, paraquat with carfentrazone at 0.014 kg ai ha−1, and sodium chlorate at 6.72 kg ai ha−1. Indeterminate and determinate soybean cultivars were treated when moisture of seed collected from the uppermost four nodes of plants averaged 60, 50, 40, 30, and 20% (± 2%). For each soybean cultivar, the harvest aid treatment by application timing interaction was not significant, and data for harvest aid treatments were averaged. Application of harvest aid at 60% average seed moisture reduced yield for the maturity group (MG) IV indeterminate cultivar 15.4% compared with the nontreated; 100-seed weight was reduced 12.4%. Yield and seed weight were not negatively affected when harvest aid was applied at 50% average seed moisture and soybean was harvested 14 and 15 d before the nontreated control. Although planting date in the 2 yr for the indeterminate cultivar differed by 26 d, number of days from planting to harvest aid application at 50% average seed moisture was 112 and 116 d. For MG V and MG VI determinate cultivars, application of harvest aid at 60% average seed moisture reduced yield compared with the nontreated control 22 and 18.1%, respectively, and at 50% average seed moisture 15.6 and 4%, respectively; seed weight reductions of 8.9 to 33.3% accompanied the yield reductions of the two cultivars. Reduction in soybean yield and seed weight was not observed when harvest aid was applied at 40% average seed moisture, and harvest for the 2 yr was 8 and 9 d earlier for the MG V cultivar and 10 and 14 d earlier for the MG VI cultivar.


Crop Science ◽  
2021 ◽  
Author(s):  
T. C. Morris ◽  
R. A. Vann ◽  
J. Heitman ◽  
G. D. Collins ◽  
R. W. Heiniger

2013 ◽  
Vol 12 (1) ◽  
pp. CM-2012-0150-RS ◽  
Author(s):  
A. S. Barreiro ◽  
C. B. Godsey

ael ◽  
2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Yogendra Y. Raut ◽  
Vinayak S. Shedekar ◽  
Khandakar R. Islam ◽  
Javier M. Gonzalez ◽  
Dexter B. Watts ◽  
...  

2007 ◽  
Vol 99 (3) ◽  
pp. 630-636 ◽  
Author(s):  
Mario Perez-Bidegain ◽  
Richard M. Cruse ◽  
Allan Ciha

2019 ◽  
Vol 83 (1) ◽  
pp. 173-180 ◽  
Author(s):  
Joao Arthur Antonangelo ◽  
Ruan Francisco Firmano ◽  
Luís Reynaldo Ferracciú Alleoni ◽  
Adilson Oliveira ◽  
Hailin Zhang

2015 ◽  
Vol 107 (6) ◽  
pp. 2143-2161 ◽  
Author(s):  
Joshua T. Enderson ◽  
Antonio P. Mallarino ◽  
Mazhar U. Haq
Keyword(s):  

Plant Disease ◽  
2016 ◽  
Vol 100 (8) ◽  
pp. 1735-1743 ◽  
Author(s):  
Yuba R. Kandel ◽  
Kiersten A. Wise ◽  
Carl A. Bradley ◽  
Albert U. Tenuta ◽  
Daren S. Mueller

A 2-year study was conducted in Illinois, Indiana, Iowa, and Ontario in 2013 and 2014 to determine the effects of planting date, seed treatment, and cultivar on plant population, sudden death syndrome (SDS) caused by Fusarium virguliforme, and grain yield of soybean (Glycine max). Soybean crops were planted from late April to mid-June at approximately 15-day intervals, for a total of three to four plantings per experiment. For each planting date, two cultivars differing in SDS susceptibility were planted with and without fluopyram seed treatment. Mid-May plantings resulted in higher disease index compared with other planting dates in two experiments, early June plantings in three, and the remaining six experiments were not affected by planting date. Soil temperature at planting was not linked to SDS development. Root rot was greater in May plantings for most experiments. Resistant cultivars had significantly lower disease index than the susceptible cultivar in 54.5% of the experiments. Fluopyram reduced disease severity and protected against yield reductions caused by SDS in nearly all plantings and cultivars, with a maximum yield response of 1,142 kg/ha. Plant population was reduced by fluopyram seed treatment and early plantings in some experiments; however, grain yield was not affected by these reductions. Yields of plots planted in mid-June were up to 29.8% less than yields of plots planted in early May. The lack of correlation between early planting date and SDS severity observed in this study indicates that farmers do not have to delay planting in the Midwest to prevent yield loss due to SDS; cultivar selection combined with fluopyram seed treatment can reduce SDS in early-planted soybean (late April to mid May).


age ◽  
2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Carrie C. Ortel ◽  
Trenton L. Roberts ◽  
Kyle A. Hoegenauer ◽  
Larry C. Purcell ◽  
Nathan A. Slaton ◽  
...  

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