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Low soybean plant population: Is replanting necessary? Open
Early in the growing season, abiotic (freezing temperatures, hail, flooding, etc.) and biotic (slugs, deer, disease, insects, etc.) factors often reduce soybean [ Glycine max (L.) Merr.] plant populations. Although seeing a soybean field w…
Soybean Response to N Fertilization Compared with Co-Inoculation of Bradyrhizobium japonicum and Azospirillum brasilense Open
The soybean [Glycine max (L.) Merrill] relationship with the bacteria Bradyrhizobium japonicum is responsible for providing around 60% of the nitrogen (N) required for the crop and the remaining N comes from the soil or supplemental fertil…
View article: Soybean management for seed composition: The perspective of U.S. farmers
Soybean management for seed composition: The perspective of U.S. farmers Open
The soybean [ Glycine max (L.) Merr.] compositional quality is mainly provided by the seed concentration of protein and oil. These traits are critical for sustaining global use, and although there is demand for high protein soybean, no mec…
View article: Foliar fertilizers rarely increase yield in United States soybean
Foliar fertilizers rarely increase yield in United States soybean Open
Farmers have been interested in using foliar‐applied nutrient products to increase soybean [ Glycine max (L.) Merr.] yield since at least the 1970s, despite limited evidence that these products offer consistent yield increases when used pr…
Using Canopy Measurements to Predict Soybean Seed Yield Open
Predicting soybean [Glycine max (L.) Merr.] seed yield is of interest for crop producers to make important agronomic and economic decisions. Evaluating the soybean canopy across a range of common agronomic practices, using canopy measureme…
Soybean Relative Maturity, Not Row Spacing, Affected Interseeded Cover Crops Biomass Open
Adoption of cover crop interseeding in the northwestern Corn Belt in the USA is limited due to inadequate fall moisture for establishment, short growing season, additional costs, and need for adapted winter-hardy species. This study evalua…
Individual and Combined Effects of Planting Date, Seeding Rate, Relative Maturity, and Row Spacing on Soybean Yield Open
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 …
Interseeding Camelina and Rye in Soybean with Varying Maturity Provides Soil Cover without Affecting Soybean Yield Open
Low adoption to utilize cover crops interseeded into soybean (Glycine max (L.) Merr.), in the northern Plains in the USA, is due to a short growing season and a few adapted winter-hardy species. The objective was to evaluate the impact of …
How Raised Beds and Fe-Chelate Affect Soybean Iron Deficiency Chlorosis and Yield Open
Water-logging and the inability to take up sufficient iron (Fe), causing iron deficiency chlorosis (IDC) in soybean (Glycine max, L. Merr.), can be major yield reducing factors in certain soils in the northern USA and Manitoba, Canada, soy…
View article: Management strategies for early‐ and late‐planted soybean in the north‐central United States
Management strategies for early‐ and late‐planted soybean in the north‐central United States Open
It is widely recognized that planting soybean [ Glycine max (L.) Merr.] early is critical to maximizing yield, but the influence of changing management factors when soybean planting is delayed is not well understood. The objectives of this…
View article: Defining optimal soybean seeding rates and associated risk across North America
Defining optimal soybean seeding rates and associated risk across North America Open
Soybean [ Glycine max (L.) Merr.] seeding rate research across North America is typically conducted in small geo‐political regions where environmental effects on the seeding rate × yield relationship are minimized. Data from 211 individual…
Soybean Nodulation and Plant Response to Nitrogen and Sulfur Fertilization in the Northern US Open
Soybean [Glycine max (L.) Merrill] seed yields in the northern United States may increase with the application of fertilizers; however Nitrogen (N) may decrease root nodulation. This study was conducted to understand the impact of N and su…
Comprehensive Disease Survey of U.S. Sunflower: Disease Trends, Research Priorities and Unanticipated Impacts Open
Between 2002 and 2015, a comprehensive survey of sunflower fields across seven Midwestern U.S. states was conducted 12 times and continues to be conducted every other year. The surveyors collected data on yield, agronomic management factor…
View article: Sifting and winnowing: Analysis of farmer field data for soybean in the US North-Central region
Sifting and winnowing: Analysis of farmer field data for soybean in the US North-Central region Open
Field trials are commonly used to estimate the effects of different factors on crop yields. In the present study, we followed an alternative approach to identify factors that explain field-to-field yield variation, which consisted of farme…
Soybean Productivity as Affected by Raised Seedbeds Under Dry Environments Open
Background: Raised seedbeds may be a practice for reducing waterlogging in the rooting zone in soils of the Red River of the North Valley (RRNV). However, it was not known if there would be a negative yield effect of raised beds in drier e…
View article: Assessing causes of yield gaps in agricultural areas with diversity in climate and soils
Assessing causes of yield gaps in agricultural areas with diversity in climate and soils Open
Identification of causes of gaps between yield potential and producer yields has been restricted to small geographic areas. In the present study, we developed a novel approach for identifying causes of yield gaps over large agricultural ar…
Nitrogen Fertilization and Inoculation Effects on Dry Bean Open
Dry bean (Phaseolus vulgaris L.) has the ability to form symbiotic relationships with N2-fixing bacteria. The research objectives were to evaluate yield and growth differences between dry bean cultivars from black, navy, and pinto market c…
Blackbird Damage is an Important Agronomic Factor Influencing Sunflower Production Open
From 2001 to 2013 (except 2004), the National Sunflower Association sponsored a comprehensive production survey of physiologically mature sunflower (Helianthus annuus) fields in the Canadian province of Manitoba and eight states in the Uni…