
Dr. Alex Lindsey, Associate Professor of Crop Ecophysiology & Agronomy, walks us through his current research project on how cold temperatures and water can affect early planted soybeans within the first 24 hours of planting.
How does cold temperature and water affect germination and emergence?
We have been studying how cold temperatures and water affect soybeans under ultra-early planting conditions using some lab experiments. We planted soybeans into field soil (starting at 20% or 60% available water content) at 1” (shallow) or 1.5” (normal) planting depths, and exposed them to different combinations of cold temperatures and water treatments during the first 24 hours after planting (Table 1). After the first 24 hours, we raised the temperature in the chamber to 70°F and measured emergence.

Table 1. Temperature and water treatments evaluated during the first 24 hrs after planting.
Preliminary results suggest that no water application (even if temperature dropped to 35°F) resulted in the greatest emergence (75%) after 11 days. Water application immediately after planting, regardless of whether it was 50°F or 35°F, cut the emergence totals in half. Application of ice after planting was less damaging to emergence but still reduced germination compared to where water wasn’t applied. This suggests that avoiding precipitation within the first 24 hours of planting is key to ensuring good emergence.
Does planting depth matter? Continue reading Battle for the Belt – Chilling Injury







Sustained Wet Conditions

This year’s weather has been temperamental, with temperatures fluctuating wildly between above average to below average over the past few months, according to Ben Torrance, State Statistician, USDA NASS, Ohio Field Office. Topsoil moisture conditions were rated 32 percent adequate and 68 percent surplus. Statewide, the average temperature for the week ending on April 7 was 46.3 degrees, 0.3 degrees above normal. Weather stations recorded an average of 2.67 inches of precipitation, 1.8 inches above average. There were 0.3 days suitable for fieldwork during the week ending April 7. Precipitation last week left fields saturated and brought fieldwork to a stop. Drier weather settled in towards the end of the week, but most fields remained too wet to hold heavy equipment. Oats were 7 percent planted. Winter wheat was 16 percent jointed and winter wheat condition was 67 percent good to excellent. Fruit trees began blossoming in the northern counties after last week’s light frost.
