Evaluation of the Effect of SoyaSignal Technology on Soybean Yield [Glycine max (L.) Merr.] under Field Conditions Over 6 Years in Eastern Canada and the Northern United States

Soybean (Glycine max (L.) Merr.) cultivars were tested for yield at various populations in hillplots that had plants compactly clumped and in comparative hill and row plots. Results indicated that thinning to a uniform stand should be worthwhile in cases where population varies and that selection in hills for material to be grown in rows could be from 43 to 95% as effective as direct selection in row plots.Key words: Glycine max, soybean cultivars, plant density, yield, hill plots, selection

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Drainage and Water Quality in Northern United States and Eastern Canada

Journal of Irrigation and Drainage Engineering ◽

10.1061/(asce)0733-9437(1995)121:4(296) ◽

1995 ◽

Vol 121 (4) ◽

pp. 296-301 ◽

Cited By ~ 5

Author(s):

W. F. Ritter ◽

R. P. Rudra ◽

P. H. Milburn ◽

S. Prasher

Keyword(s):

United States ◽

Water Quality ◽

Eastern Canada ◽

Northern United States

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Reactions of hard red spring wheat to common root rot under field conditions of Northern United States of America

Euphytica ◽

10.1007/s10681-008-9853-8 ◽

2008 ◽

Vol 167 (2) ◽

pp. 165-172 ◽

Cited By ~ 4

Author(s):

Dennis J. Tobias ◽

Robert W. Stack ◽

Krishna D. Puri ◽

Neil Riveland ◽

Shaobin Zhong

Keyword(s):

United States ◽

Spring Wheat ◽

United States Of America ◽

Root Rot ◽

Field Conditions ◽

Common Root ◽

Hard Red Spring Wheat ◽

Common Root Rot ◽

Northern United States

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Banana Stem Bokashi and its Effect to Increase Soybean Yield (Glycine max L. Merrill) in Coastal Sands Area

Agrotechnology ◽

10.4172/2168-9881.1000184 ◽

2018 ◽

Vol 07 (02) ◽

Author(s):

Khavid Faozi ◽

Prapto Yudono ◽

Didik Indradewa ◽

Azwar Maas

Keyword(s):

Glycine Max ◽

Soybean Yield ◽

Glycine Max L ◽

Banana Stem

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Diaporthe seed decay of soybean [Glycine max (L.) Merr.] is endemic in the United States, but new fungi are involved

Plant Disease ◽

10.1094/pdis-03-20-0604-re ◽

2020 ◽

Author(s):

Kristina Petrovic ◽

Demetra Skaltsas ◽

Lisa Castlebury ◽

Brian Kontz ◽

Tom Allen ◽

...

Keyword(s):

United States ◽

Glycine Max ◽

Seed Quality ◽

Phylogenetic Analyses ◽

Elongation Factor ◽

The United States ◽

Post Inoculation ◽

Seed Decay ◽

Comprehensive Survey ◽

Glycine Max L

Diaporthe seed decay can compromise seed quality in soybean [Glycine max (L.) Merr.] in the warm and humid production areas of the United States during crop maturation. In the current study, 45 isolates of Diaporthe were recovered from seed sampled from soybean fields affected by Diaporthe-associated diseases in eight U.S. states in 2017. The isolates obtained belonged to 10 species of Diaporthe based on morphology and phylogenetic analyses of the internal transcribed spacer, the partial translation elongation factor 1-alpha, and beta-tubulin gene sequences. The associated species included D. aspalathi, D. caulivora, D. kongii, D. longicolla, D. sojae, D. ueckerae, D. unshiuensis and three novel fungi, D. bacilloides, D. flavescens and D. insulistroma. One isolate each of the 10 species was examined for pathogenicity on seed of cv. ‘Sava’ under controlled conditions. Seven days post-inoculation, significant differences in the percentages of decayed seeds and seedling necrosis were observed among the isolates and the non-inoculated control (p<0.0001). While the isolates of D. bacilloides, D. longicolla, and D. ueckerae caused significantly greater percentage of decayed seeds (p<0.0001), the isolate of D. aspalathi caused the greatest seedling necrosis (p<0.0001) when compared to the non-inoculated control. The observation of new fungi causing Diaporthe seed decay suggests the need for a more comprehensive survey in the U.S. soybean producing areas since members of the genus Diaporthe appear to form a complex that causes seed decay.

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Comparisons of nitrogen fixation estimates in soybeans by nodule weight, leghemoglobin content, and acetylene reduction

Canadian Journal of Microbiology ◽

10.1139/m73-186 ◽

1973 ◽

Vol 19 (9) ◽

pp. 1165-1168 ◽

Cited By ~ 24

Author(s):

H. S. Johnson ◽

D. J. Hume

Keyword(s):

Nitrogen Fixation ◽

Glycine Max ◽

Acetylene Reduction ◽

Growth Period ◽

Growing Season ◽

Field Conditions ◽

Soybean Cultivar ◽

Fresh Weight ◽

Stages Of Development ◽

Glycine Max L

Nodule leghemoglobin content, acetylene reduction rates, and nodule weight determinations were made during an entire growth period of soybean (Glycine max (L.) Merr. cv. Altona) plants grown under field conditions. High correlations within most sampling dates were found between each pair of possible comparisons of these indicators of nitrogen fixation.Rates of conversion of acetylene to ethylene per milligram leghemoglobin constantly decreased during the growing season, whereas leghemoglobin content per gram nodule fresh weight remained relatively constant. These results indicate that leghemoglobin content of nodules could be used to compare rates of nitrogen fixation in plants of a soybean cultivar at similar stages of development but should not be used to compare fixation rates in plants at different stages in ontogeny.

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Interference Between Soybeans (Glycine max) and Common Cocklebur (Xanthium strumarium) Under Indiana Field Conditions

Weed Science ◽

10.1017/s0043174500072799 ◽

1989 ◽

Vol 37 (6) ◽

pp. 753-760 ◽

Cited By ~ 15

Author(s):

William T. Henry ◽

Thomas T. Bauman

Keyword(s):

Spatial Distribution ◽

Regression Analysis ◽

Glycine Max ◽

Seed Yield ◽

Soybean Seed ◽

Growing Season ◽

Field Conditions ◽

Xanthium Strumarium ◽

Soybean Yield ◽

Over Time

The effects of interference between soybeans and common cocklebur were investigated. Common cocklebur interference reduced soybean growth at each of four sample dates during the growing season. The area of interference surrounding individual common cocklebur plants within the soybean row fluctuated over time with respect to intensity and spatial distribution. Soybean growth was significantly reduced up to 10 cm away from individual cocklebur plants at 6 weeks after planting (WAP), 30 cm at 8 WAP, 20 to 30 cm at 10 WAP, and 40 cm at 12 WAP. The maximum possible distance of cocklebur influence, determined by regression analysis, also varied during the growing season. When areas of interference from adjacent cocklebur plants overlapped, the cumulative influence was found to be additive, especially late in the growing season. Soybean interference caused a 50 to 90% reduction in the size of common cocklebur plants grown within the soybean row compared to plants grown without interference. At harvest, soybean yield was reduced up to 40 to 50 cm within the row from individual cocklebur plants. The maximum distance of interference on one side of individual cocklebur plants was 75 cm. One cocklebur plant reduced soybean yield 16.0% within 1.5 m of soybean row as the result of full-season interference. Interference of common cocklebur plants spaced 60 cm apart within the row overlapped and caused an additive reduction in soybean seed yield. Across all cocklebur treatments, there was a consistent ratio of approximately 1 kg/ha loss in soybean seed yield for each 4 kg/ha of cocklebur herbage produced.

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Glyphosate-resistant giant ragweed (Ambrosia trifida L.) control with preplant herbicides in soybean [Glycine max (L.) Merr.]

Canadian Journal of Plant Science ◽

10.4141/cjps2012-025 ◽

2012 ◽

Vol 92 (5) ◽

pp. 913-922 ◽

Cited By ~ 15

Author(s):

Joseph P. Vink ◽

Nader Soltani ◽

Darren E. Robinson ◽

François J. Tardif ◽

Mark B. Lawton ◽

...

Keyword(s):

Glycine Max ◽

Field Trials ◽

Yield Losses ◽

Ambrosia Trifida ◽

Soybean Yield ◽

Field Crops ◽

Giant Ragweed ◽

Glycine Max L ◽

Significant Yield ◽

Residual Control

Vink, J. P., Soltani, N., Robinson, D. E., Tardif, F. J., Lawton, M. B. and Sikkema, P. H. 2012. Glyphosate-resistant giant ragweed ( Ambrosia trifida L.) control with preplant herbicides in soybean [ Glycine max (L.) Merr.]. Can. J. Plant Sci. 92: 913–922. Giant ragweed populations in southwestern Ontario have evolved resistance to glyphosate. Glyphosate-resistant (GR) giant ragweed interference in field crops can lead to significant yield losses. Eleven field trials [five with preplant (PP) burndown only and six with PP burndown plus residual herbicides] were conducted in 2010 and 2011 on Ontario farms with GR giant ragweed to evaluate the efficacy of various PP herbicides applied prior to soybean planting. Glyphosate applied at the recommended field dose failed to adequately control GR giant ragweed. The PP herbicides 2,4-D ester, cloransulam-methyl and saflufenacil applied alone and with glyphosate provided 97–99, 68–100 and 71–94% control, respectively and resulted in soybean yields equivalent to the weed-free check. Combinations of glyphosate plus cloransulam-methyl or linuron controlled GR giant ragweed 8 wk after application (WAA), 75–95 and 95–98%, respectively. Residual control with glyphosate plus linuron resulted in soybean yield equivalent to the weed-free check. Based on these results, GR giant ragweed can be controlled prior to soybean planting in southwestern Ontario.

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Soybeans

Outlook on Agriculture ◽

10.1177/003072708601500205 ◽

1986 ◽

Vol 15 (2) ◽

pp. 75-79

Author(s):

Robert W. Howell

Keyword(s):

United States ◽

Glycine Max ◽

The United States ◽

Soybean Production ◽

The World ◽

Glycine Max L ◽

World Agriculture

The rapid increase in importance of soybeans (Glycine max (L.) Merr.) and soybean products in world agriculture is a major phenomenon of the last 50 years. Beginning about 1940 soybean production and use increased rapidly, first in the United States and recently in other parts of the world. Soybean production now ranks near the top of non-cereal sources of calories and protein.

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