– Mark Sulc, OSU Extension Forage Specialist
The month of August provides a window of opportunity for establishing perennial forage stands or filling in seedings made this spring that have gaps. The primary risk with late summer forage seedings is having sufficient moisture for seed germination and plant establishment. The decision to plant or not will have to be made for each individual field, considering soil moisture status and the rainfall forecast. Rainfall and adequate soil moisture in the few weeks immediately after seeding is the primary factor affecting successful establishment.
No-till seeding in August is an excellent choice to conserve soil moisture for seed germination. Make sure that the field surface is relatively level and smooth if you plan to no-till, because you will have to live with any field roughness for several years of harvesting operations.
Sclerotinia crown and stem rot is a concern with no-till seedings of alfalfa in late summer where clover has been present in the past. This pathogen causes . . .
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