APPLICATION OF TEMPERATURE SUMS IN THE TIMING OF PRODUCTION OF CRISP LETTUCE

Statistical models for predicting the date of harvest of crisp lettuce were developed and evaluated using data from variety trials.
The prediction criteria applied were number-of-days from planting to harvest and corresponding temperature sums with base temperature 4.0 °C. For practical applications the smallest error of prediction (3.3 days) was obtained with a model based on a linear relation between temperature sum requirement and planting date.

Symposium on the Timing of Field Production of Vegetables

S. Kristensen, E. Friis, K. Henriksen, S.A. Mikkelsen

https://doi.org/10.17660/ActaHortic.1987.198.27