soybean - Canadian Agronomist

28 Oct Economic performance of legume intercrops varied

Posted at 20:57h in Agronomy

The economic returns of cereal, oilseed and legume intercrop crops varied by location. Generally, intercropping reduced losses or outperformed less profitable monocrops but high value monocrops like corn and soybean outperformed intercrops. Net return stability also varied by different intercrop types and growth conditions. Legume intercrops...

23 Jul Lentil and soybean stubbles are viable options for winter wheat

Posted at 21:49h in Agronomy

Winter wheat seeded on soybean and lentil stubbles had high, stable yields compared to field peas, faba bean, canola, flax, and oats. Seeding into oat stubble resulted in lower and more variable yields. Crop diversity on the Prairies continues to expand, providing winter wheat growers with...

26 Nov Manitoba soybeans show little response to phosphorus fertilization

Posted at 17:35h in Soils and Fertility

Phosphorus (P) fertilization did not increase seed yield, regardless of P rate, P placement or Olsen soil test P level, except for one out of 28 site-years. High rates of seed-placed P reduced stand establishment at 5 of 28 site-years. Limited research had been conducted on...

12 Mar Starter fertilizer increased corn grain yield

Posted at 19:40h in Soils and Fertility

Starter phosphorus (P) and zinc (Zn) fertilizer increased early-season growth, plant height, P concentration, and uptake of P and Zn in plant tissue, relative to the unfertilized control. In some cases, starter fertilizer reduced days to maturity and grain moisture content. The largest responses were...

01 Mar Less weed competition for soybeans grown on low-nitrogen soils

Posted at 21:54h in Weeds

Growing soybean on high soil mineral nitrogen (N) fields, or when N fertilizer was applied in increasing rates, resulted in an increase in volunteer canola competition and a corresponding linear decrease in soybean yield. Research was conducted in Manitoba looking at the resource-ratio (R*) hypothesis. This...

30 Nov Economic optimum soybean plant density for irrigated soybean

Posted at 18:14h in Agronomy

The economic optimum seeding rate for irrigated soybeans in southern Alberta was calculated to be 58 seeds/m2 at 80% emergence, which is equivalent to 5.8 seeds/ft2 or 252,000 seeds/acre. In southern Alberta, the development of very early maturing varieties in the MG 00 and MG 000...

05 Jul Canola response to row spacings and seeding rates

Posted at 19:46h in Agronomy

Research shows that the highest plant densities and yields were produced at a narrow row spacing of 9 inches compared to those of 12, 18 and 24 inch spacings in a no-till production system. Increasing seeding rates of 2.8, 5.7 and 8.5 pounds per acre...

23 Jun Soybean largely unresponsive to K fertilizer in Manitoba

Posted at 17:32h in Soils and Fertility

Soybeans were found to be largely unresponsive to potassium (K) fertilizer even on low K-testing soils in Manitoba. Despite visual K deficiency symptoms mid-season, there were still no yield responses to K fertilizer at varying rates and placements. The current soil test threshold of 100...

07 Jun Comparing early soybean maturity groups

Posted at 21:40h in Agronomy

Environmental factors and location affect soybean phenology, seed yield and seed quality for early maturity groups in northern environments. Baseline environmental and phenological trends with established yield and seed quality components were developed for early maturing soybean that will support the optimization of soybean breeding...

02 Dec Controlling volunteer canola in soybean

Posted at 21:23h in Weeds

Action and economic thresholds for volunteer Roundup Ready canola in Roundup Ready soybean were determined. Economic thresholds of less than 0.5 plants/ft2 (<5 plants/m2) highlight the highly competitive nature of volunteer canola in soybean crops. Volunteer glyphosate-resistant (GR) canola is a challenge for Roundup Ready soybean...