Rowcovers Enhance Reproductive and Vegetative Yield Components in Strawberries

Abstract

Two independent studies conducted in 1986-87 and 1987-88 provided evidence that rowcover-modified microclimate can enhance yield component development in strawberry (Fragaria × ananassa Duch. cv. Earliglow). Early autumn rowcover application in 1986-87 followed by removal at bloom increased mean diurnal temperatures and degree-day accumulation in autumn and spring compared with controls without rowcovers. For rowcovered plants, leaf growth continued longer in autumn and resumed earlier in spring, and more trusses and flowers were produced. In 1987-88, increased production of marketable fruit with rowcovers occurred in the absence of an increase in flowers and appeared to be primarily due to increased development of tertiary berries.