THE EFFECT OF NURSERY LOCATION LATITUDE ON CALIFORNIA HINTER PLANTED STRAWBERRIES

V. Voth
Higher latitud is the most important because of the effect of day length giving more consistent hours of low temperatures in September and October. Higher elevations also result in lower temperatures during the same period. These effects are necessary for preconditioning strawberry plants to tolerate the rigors of digging, packing, increases the stored energy in the crown and roots which stimulates early plant vigor, early production, fruit size, total yield and affects the production pattern.

At the present time, winter planting in California is the dominant planting system with some summer planting (Frigo plants) in the central coast area. The plants used for winter planting (October-November) are grown at the higher latitudes and elevations. These nurseries are located at Macdoel, McArthur and Susanville.

The results to be shown will be for plants dug at all nursery locations on the same day and planted the same day at U.S. South Coast Field Station.

Weather data was also collected from these locations previous to digging plants to determine differences in hours below 32°F - 45°F (0 – 7.2°C) and for these areas during September and October. At the Macdoel location plants were dug at two locations because of soil differences. The plants from the very light sandy soil produced 445–495,000 plants per hectare and from the heavier soil 740–865,000 plants per hectare.

The plants from the sandy soil produced less plants per hectare, but larger plants with counts of 1,000 plants per California box where plants from heavier soil produced more plants per hectare and smaller plants with counts of 1,500 plants per California box. The plant performance shows that the plants produced on sandy soil. with lower population had larger crowns and larger root systems also received more chilling because of less canopy, more space between plants, because plants tend to insulate themselves so therefore possibly receive more chilling, giving much more early vigor.

The latitude of nursery location is more important with altitude also increasing plant growth and performance, expecially for production to April 1st.

Voth, V. (1989). THE EFFECT OF NURSERY LOCATION LATITUDE ON CALIFORNIA HINTER PLANTED STRAWBERRIES. Acta Hortic. 265, 283-284
DOI: 10.17660/ActaHortic.1989.265.41
https://doi.org/10.17660/ActaHortic.1989.265.41

Acta Horticulturae