Genetic Improvement Rates of Short‐Season Soybean Increase with Plant Population

Crop Science ◽  
2005 ◽  
Vol 45 (3) ◽  
pp. 1029-1034 ◽  
Author(s):  
Elroy R. Cober ◽  
Malcolm J. Morrison ◽  
Baoluo Ma ◽  
Gail Butler
Keyword(s):  
Genetic Improvement ◽  
Plant Population ◽  
Short Season

Genetic Improvement in Short-Season Soybeans

Crop Science ◽  
2002 ◽  
Vol 42 (1) ◽  
pp. 141 ◽  
Author(s):  
S. Kumudini ◽  
D. J. Hume ◽  
G. Chu
Keyword(s):  
Genetic Improvement ◽  
Short Season

Plant population and hybrid considerations for dryland corn production on drought-susceptible soils

1995 ◽  
Vol 75 (1) ◽  
pp. 87-91 ◽  
Author(s):  
L. C. Miller ◽  
B. L. Vasilas ◽  
R. W. Taylor ◽  
T. A. Evans ◽  
C. M. Gempesaw
Keyword(s):  
Zea Mays ◽  
Target Population ◽  
Plant Population ◽  
Seasonal Precipitation ◽  
Seeding Rate ◽  
Corn Production ◽  
Difficult Decision ◽  
Growing Seasons ◽  
Key Words Maize ◽  
Short Season

Selection of a target population for dryland corn (Zea mays) production on drought-susceptible soils is a difficult decision, as a stand appropriate for drought conditions may not fully utilize the environment during a non-stress year. One possible management strategy is to use a low seeding rate and hybrids with ear characteristics that promote yield stability over a range of environments and plant populations. To evaluate this strategy, a 2-yr field study was conducted on a Rumford loamy sand. The performance of four hybrids — 1) full season, flexible ear; 2) short season, flexible ear; 3) full season, prolific; and 4) short season, prolific — was evaluated at four populations — 29 600, 39 500, 49 400, and 59 300 plants ha−1 — in two different growing seasons. Seasonal precipitation in 1988 was 14 cm below the average of 50 cm; 1989 seasonal precipitation was 37 cm above average. Average grain yields were 40% lower in 1988 than in 1989, and the yield loss was due primarily to a decrease in ear size. All hybrids demonstrated the ability to compensate for changes in population in 1988. Averaged across years, highest yields were produced with the two highest populations. The full-season, prolific hybrid was the most productive at every population. Key words: Maize, Zea mays, genotype × environment interactions, plant population, prolificacy, ear size

Changes in Isoflavone Concentration with 58 Years of Genetic Improvement of Short-Season Soybean Cultivars in Canada

Crop Science ◽  
2008 ◽  
Vol 48 (6) ◽  
pp. 2201-2208 ◽  
Author(s):  
M. J. Morrison ◽  
E. R. Cober ◽  
M. F. Saleem ◽  
N. B. McLaughlin ◽  
J. Frégeau-Reid ◽  
...  
Keyword(s):  
Genetic Improvement ◽  
Soybean Cultivars ◽  
Isoflavone Concentration ◽  
Short Season

Optimizing Soybean Plant Population for a Short-Season Production System in the Southern USA

Crop Science ◽  
2000 ◽  
Vol 40 (3) ◽  
pp. 757-764 ◽  
Author(s):  
Rosalind A. Ball ◽  
Larry C. Purcell ◽  
Earl D. Vories
Keyword(s):  
Production System ◽  
Plant Population ◽  
Soybean Plant ◽  
Short Season

Plant Population Density and Maturity Effects on Profitability of Short-Season Maize Production in the Midsouthern USA

2006 ◽  
Vol 98 (3) ◽  
pp. 760-765 ◽  
Author(s):  
Michael Popp ◽  
Jeff Edwards ◽  
Patrick Manning ◽  
Larry C. Purcell
Keyword(s):  
Population Density ◽  
Plant Population ◽  
Maize Production ◽  
Short Season ◽  
Plant Population Density

Short-Season Soybean Genetic Improvement Evaluated in Weed-Free and Weedy Conditions

Crop Science ◽  
2011 ◽  
Vol 51 (6) ◽  
pp. 2582-2588 ◽  
Author(s):  
Elroy R. Cober ◽  
Malcolm J. Morrison
Keyword(s):  
Genetic Improvement ◽  
Short Season

Agronomic Changes from 58 Years of Genetic Improvement of Short‐Season Soybean Cultivars in Canada

2000 ◽  
Vol 92 (4) ◽  
pp. 780-784 ◽  
Author(s):  
Malcolm J. Morrison ◽  
Harvey D. Voldeng ◽  
Elroy R. Cober
Keyword(s):  
Genetic Improvement ◽  
Soybean Cultivars ◽  
Short Season

Physiological Changes from 58 Years of Genetic Improvement of Short‐Season Soybean Cultivars in Canada

1999 ◽  
Vol 91 (4) ◽  
pp. 685-689 ◽  
Author(s):  
Malcolm J. Morrison ◽  
Harvey D. Voldeng ◽  
Elroy R. Cober
Keyword(s):  
Genetic Improvement ◽  
Physiological Changes ◽  
Soybean Cultivars ◽  
Short Season

Fifty‐Eight Years of Genetic Improvement of Short‐Season Soybean Cultivars in Canada

Crop Science ◽  
1997 ◽  
Vol 37 (2) ◽  
pp. 428-431 ◽  
Author(s):  
H. D. Voldeng ◽  
E. R. Cober ◽  
D. J. Hume ◽  
C. Gillard ◽  
M. J. Morrison
Keyword(s):  
Genetic Improvement ◽  
Soybean Cultivars ◽  
Short Season
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