Leaf malformation in soybeans can take on several appearances and be caused by several factors. Herbicides, such as chloroacetamides or plant growth regulators (PGRs) are often blamed for this injury; however, environmental conditions maybe the actual cause.
Soybean with leaves damaged by hail.
Potential yield losses in soybean fields due to hail damage can result from leaf area reduction caused by hail damaged leaves and plant bruising or stand loss caused by plant death. The severity of each of these factors is important to accurately assess the extent of hail damage and how yield potential will likely be affected. Evaluating the health of the growing point can be done soon after the storm, but making a decision regarding the yield potential of the field is premature because the plants have not been given enough time to recover. AGRONOMIC Alert – Recovery & Damage Assessment of Hail Damaged Soybean Pre-Bloom
High populations of Japanese beetles (Popillia japonica Newman) might already be occurring across the region. Feeding by the adults can be a serious problem in both corn and soybeans. Thus scouting is crucial, especially during the reproductive stages of both crops. Agronomic ALERT – Japanese Beetle in Corn and Soybean Fields
Inquiries occasionally occur about symptoms associated with Iron (Fe) deficiency in soybeans. This article discusses causes, symptoms, and a few management practices if the problem is severe.
Achieving maximum soybean yield potential will likely depend on increases in stress tolerance, efficient use of all plant growth resources, and increased biomass production. A variety of agronomic practices have shown benefit to increasing soybean yield potential. Selecting what works best on your farm requires careful consideration and implementation. Agronomic Spotlight – Maximizing Soybean Yield Potential
Wet, poorly drained soils and air temperatures below 68° F can be typical during spring planting and crop emergence. These characteristics favor the development of fungal pathogens that cause soybean seedling diseases. Germination and plant growth can also be reduced. It is important to take steps that may help prevent soybean seedling diseases and scout for these diseases after planting. Agronomic Spotlight – Soybean Seedling Diseases
Stress can lower yield potential in soybeans, especially if the stress occurs during specific growth stages. Planting a range of soybean maturities, that are adapted to your geography, can help reduce the risk of potential yield loss by spreading out flowering, seed fill, and physiological maturity. Staggering soybean maturities can also maximize yield potential by spreading out the harvest work load. This may reduce the chance of harvest moisture becoming lower than desired while other fields are being harvested.
Agronomic Spotlight – Planting a Range of Soybean Maturities
Here are some links to a few soybean agronomic videos posted on Monsanto Company’s YouTube site.
| 1. | Flowering |
| 2. | Root Biomass |
| 3. | Intensive Management Practices |
Whether it is with site specific grid sampling, or more traditional methods, soil testing is the most useful means of determining what inventories of nutrients are available for crop production. In a period of rising fertilizer prices, soil testing allows a grower to prioritize fertilizer applications, and focus on inputs that will provide the greatest return in crop production. AGRONOMIC Spotlight – Soil Testing
Roots affected by compaction.
Soil compaction can be a serious concern in moist soils, especially this spring when getting ready to start fieldwork. Compaction has become a problem in recent years due to an increase of field equipment size and weight. Damage to soil structure occurs when working too moist of soil. Compaction can negatively impact plant growth and development, and may ultimately reduce yield potential. Reducing the potential for compaction this spring can help avoid/prevent the negative impact of soil compaction on crops during the growing season.
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