Thomas G. Chastain
Why is lodging important in grass seed crops?
Under certain conditions, the tiller cannot support the weight of the developing inflorescence and seed. The tiller lodges or falls to the ground, especially when there are high levels of nitrogen fertilizer and soil moisture present (Fig. 1). Both conditions are common in Oregon’s commercial grass seed production fields in the spring. But will that be the case in spring 2013?
The winter months of January through March 2013 have been the 2nd driest winter period on record at Corvallis with only 6.28 inches recorded. Can we expect more of the same dry weather during spring? No one can say for sure, but an examination of weather records for the past 124 years reveals that when precipitation is very low (50% or less of the 16.02 inch normal) in January through March, the following April through June period averages 5.78 inches or near normal rainfall (normal is 5.83 inches).
Despite the very dry weather that has been recorded to date, there may still be enough rainfall present in coming months to make lodging a problem for local seed growers.
