Soybean Seed Yield Response to Planting Date and Seeding Rate in the Upper Midwest

2008 ◽  
Vol 100 (3) ◽  
pp. 696-703 ◽  
Author(s):  
Jason L. De Bruin ◽  
Palle Pedersen
Keyword(s):  
Seed Yield ◽  
Soybean Seed ◽  
Planting Date ◽  
Yield Response ◽  
Seeding Rate ◽  
Upper Midwest

Has Breeding Improved Soybean Competitiveness with Weeds?

Weed Science ◽  
2017 ◽  
Vol 66 (1) ◽  
pp. 57-61
Author(s):  
Devin J. Hammer ◽  
David E. Stoltenberg ◽  
Jed B. Colquhoun ◽  
Shawn P. Conley
Keyword(s):  
Seed Yield ◽  
Soybean Seed ◽  
Planting Date ◽  
Weed Suppression ◽  
Yield Potential ◽  
Seeding Rate ◽  
Soybean Breeding ◽  
Yield Gain ◽  
Volunteer Corn ◽  
Over Time

Soybean yield gain over the last century has been attributed to both genetic and agronomic improvements. Recent research has characterized how breeding efforts to improve yield gain have also secondarily impacted agronomic practices such as seeding rate, planting date, and fungicide use. To our knowledge, no research has characterized the relationship between weed–soybean interference and genetic yield gain. Therefore, the objectives of this research were to determine whether newer cultivars would consistently yield higher than older cultivars under increasingly competitive environments, and whether soybean breeding efforts over time have indirectly increased soybean competitiveness. Field research was conducted in 2014, 2015, and 2016 in which 40 maturity group (MG) II soybean cultivars released between 1928 and 2013 were grown season-long with three different densities of volunteer corn (0, 2.8, and 11.2 plants m−2). Soybean seed yield of newer cultivars was higher than older cultivars at each volunteer corn density (P<0.0001). Soybean seed yield was also higher in the weed-free treatment than at low or high volunteer corn seeding rates. However, soybean cultivar release year did not affect late-season volunteer corn shoot dry biomass at either seeding rate of 2.8 or 11.2 seeds m−2. The results indicate that while soybean breeding efforts have increased yield potential over time, they have not increased soybean competitiveness with volunteer corn. These results highlight the importance of other cultural practices such as planting date and crop row spacing for weed suppression in modern soybean production systems.

scholarly journals Individual and Combined Effects of Planting Date, Seeding Rate, Relative Maturity, and Row Spacing on Soybean Yield

Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 605
Author(s):  
Peder K. Schmitz ◽  
Hans J. Kandel
Keyword(s):  
Seed Yield ◽  
Management Practices ◽  
Synergistic Effects ◽  
Canopy Cover ◽  
Planting Date ◽  
Row Spacing ◽  
Growth Stages ◽  
Seeding Rate ◽  
Yield Increase ◽  
Beginning Of Flowering

Planting date (PD), seeding rate (SR), relative maturity (RM) of cultivars, and row spacing (RS) are primary management factors affecting soybean (Glycine max (L.) Merr.) yield. The individual and synergistic effects of PD, SR, RM, and RS on seed yield and agronomic characteristics in North Dakota were herein investigated. Early and late PD, early and late RM cultivars, two SR (408,000 and 457,000 seed ha−1), and two RS (30.5 and 61 cm) were evaluated in four total environments in 2019 and 2020. Maximizing green canopy cover prior to the beginning of flowering improved seed yield. Individual factors of early PD and narrow RS resulted in yield increase of 311 and 266 kg ha−1, respectively. The combined factors of early PD, late RM, high SR, and narrow RS improved yield by 26% and provided a $350 ha−1 partial profit over conventional practices. Canopy cover and yield had relatively weak relationships with r2 of 0.36, 0.23, 0.14, and 0.21 at the two trifoliolate, four trifoliolate, beginning of flowering, and beginning of pod formation soybean growth stages, respectively. Producers in the most northern soybean region of the USA should combine early planting, optimum RM cultivars, 457,000 seed ha−1 SR, and 31 cm RS to improve yield and profit compared to current management practices.

scholarly journals Soybean Seed Yield Response to Plant Density by Yield Environment in North America

2019 ◽  
Vol 111 (4) ◽  
pp. 1923-1932 ◽  
Author(s):  
Walter D. Carciochi ◽  
Rai Schwalbert ◽  
Fernando H. Andrade ◽  
Geomar M. Corassa ◽  
Paul Carter ◽  
...  
Keyword(s):  
North America ◽  
Seed Yield ◽  
Plant Density ◽  
Soybean Seed ◽  
Yield Response

scholarly journals Phosphorus and Potassium Fertilizer Application Strategies in Corn–Soybean Rotations

Agronomy ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 195 ◽  
Author(s):  
Timothy Boring ◽  
Kurt Thelen ◽  
James Board ◽  
Jason De Bruin ◽  
Chad Lee ◽  
...  
Keyword(s):  
Grain Yield ◽  
Seed Yield ◽  
Soybean Seed ◽  
Fertilizer Application ◽  
High Yield ◽  
Yield Response ◽  
Soil Test ◽  
Soil Test P ◽  
Corn Grain ◽  
Corn Grain Yield

To determine if current university fertilizer rate and timing recommendations pose a limitation to high-yield corn (Zea mays subsp. mays) and soybean (Glycine max) production, this study compared annual Phosphorous (P) and Potassium (K) fertilizer applications to biennial fertilizer applications, applied at 1× and 2× recommended rates in corn–soybean rotations located in Minnesota (MN), Iowa (IA), Michigan (MI), Arkansas (AR), and Louisiana (LA). At locations with either soil test P or K in the sub-optimal range, corn grain yield was significantly increased with fertilizer application at five of sixteen site years, while soybean seed yield was significantly increased with fertilizer application at one of sixteen site years. At locations with both soil test P and K at optimal or greater levels, corn grain yield was significantly increased at three of thirteen site years and soybean seed yield significantly increased at one of fourteen site years when fertilizer was applied. Site soil test values were generally inversely related to the likelihood of a yield response from fertilizer application, which is consistent with yield response frequencies outlined in state fertilizer recommendations. Soybean yields were similar regardless if fertilizer was applied in the year of crop production or before the preceding corn crop. Based on the results of this work across the US and various yield potentials, it was confirmed that the practice of applying P and K fertilizers at recommended rates biennially prior to first year corn production in a corn–soybean rotation does not appear to be a yield limiting factor in modern, high management production systems.

Effect of numbers of Bradyrhizobium japonicum applied in commercial inoculants on soybean seed yield in Ontario

1992 ◽  
Vol 38 (6) ◽  
pp. 588-593 ◽  
Author(s):  
D. J. Hume ◽  
D. H. Blair
Keyword(s):  
Glycine Max ◽  
Seed Yield ◽  
Bradyrhizobium Japonicum ◽  
Field Experiments ◽  
Soybean Seed ◽  
Yield Response ◽  
Cubic Equation ◽  
Glycine Max L ◽  
Seed Yields ◽  
Commercial Inoculants

In the absence of Bradyrhizobium japonicum populations in the soil, yields of field-grown soybean (Glycine max (L.) Merrill) usually respond to inoculation with B. japonicum. The objective of this research was to determine the relationship between numbers of B. japonicum per seed in inoculants and soybean nodulation and yield. A total of six field experiments were conducted in 1989 and 1990 on new soybean soils. In dilution trials, Grip inoculant was applied to provide approximately 106, 105, 104, and 103B. japonicum per seed at two locations in 1989. Nodule number and mass, as well as seed yield, increased curvilinearly upward with increasing log10 most probable numbers (MPNs) of B. japonicum. The yield response curve was best fit by a cubic equation, which accounted for 97% of the variation in yield. Seed yields increased 19% (1.83 to 2.13 Mg/ha) from 105 to 106B. japonicum per seed. In field experiments involving 8 commercial inoculants in 1989 and 10 in 1990, and conducted at two locations in each year, responses to increasing log MPNs in the inoculants also were concave upwards and cubic. In the two years, 78 and 46% of the yield variation was accounted for by log MPN per seed. Increasing MPN per seed from 105 to 106 improved yields in first-time fields by an average of 24%, indicating the present minimum standard of 105B. japonicum per seed should be increased. Key words: most probable numbers, response to inoculation, nodulation, Glycine max (L.) Merrill.

scholarly journals Planting Date, Maturity, and Temperature Effects on Soybean Seed Yield and Composition

2017 ◽  
Vol 109 (5) ◽  
pp. 2040-2049 ◽  
Author(s):  
Spyridon Mourtzinis ◽  
Adam P. Gaspar ◽  
Seth L. Naeve ◽  
Shawn P. Conley
Keyword(s):  
Seed Yield ◽  
Temperature Effects ◽  
Soybean Seed ◽  
Planting Date

The effect of seeding rate, seeding date and seeder type on the performance of Camelina sativa L. in the Maritime Provinces of Canada

2008 ◽  
Vol 88 (3) ◽  
pp. 501-508 ◽  
Author(s):  
S. D. Urbaniak ◽  
C. D. Caldwell ◽  
V. D. Zheljazkov ◽  
R. Lada ◽  
L. Luan
Keyword(s):  
Seed Yield ◽  
Camelina Sativa ◽  
High Yield ◽  
Yield Response ◽  
Oil Composition ◽  
Seeding Rate ◽  
Maritime Provinces ◽  
Seeding Date ◽  
Rate Experiment ◽  
Crop Stand

The hypothesis of this study was that spring camelina (Camelina sativa L.) could be grown as a high-value crop under the moist, cool conditions of the Maritime Provinces in Canada and seeding date, seeding rate, and type of seeder will modify productivity and oil composition. The objectives were (1) to determine the optimum seeding date and seeding rate for camelina production in the Maritimes; and (2) to evaluate the effect of seeder type (seed drill and forage seeder) on camelina establishment and seed yield. A seeding date and rate experiment and a seeder type and seeding rate experiment were conducted in 2005 and 2006 in Nova Scotia and Prince Edwards Island. Seeding date did not affect camelina emergence, plant height, seed yield and oil content. The earlier seeding date increased the concentration of stearic acid in the oil compared with the later seeding date. Seed yield of camelina was not affected by seeding rate in the seeder type by rate trial but higher yields were observed up to 600 seeds m-2 in the seeding date by rate trial. The weak yield response to seeding rate could be explained by the high yield compensation ability of camelina through branching. It was suggested that seeding rates in the range of 400 to 600 seeds m-2 would likely be best for camelina grown in the Maritime region. The forage seeder provided a better crop stand compared with the seed drill, although both seeders provided satisfactory crop establishment. Camelina has the potential to be produced successfully in the Maritime Provinces due to its adaptability to seeder type, low seeding rate requirements, and a wide window for seeding date. Key words: Camelina, seeding date, seeding rate, seeder type

Soybean Seed Yield Response to Multiple Seed Treatment Components across Diverse Environments

2014 ◽  
Vol 106 (6) ◽  
pp. 1955-1962 ◽  
Author(s):  
Adam P. Gaspar ◽  
David A. Marburger ◽  
Spyridon Mourtzinis ◽  
Shawn P. Conley
Keyword(s):  
Seed Yield ◽  
Seed Treatment ◽  
Soybean Seed ◽  
Yield Response

Row spacing and seeding rate effect on soybean seed yield in North Dakota

cftm ◽  
2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Peder K. Schmitz ◽  
Jordan D. Stanley ◽  
Hans Kandel
Keyword(s):  
North Dakota ◽  
Seed Yield ◽  
Soybean Seed ◽  
Rate Effect ◽  
Row Spacing ◽  
Seeding Rate
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