METHOD FOR THE PREDICTION OF BUDDING AND HARVEST TIME OF BROCCOLI UNDER FIELD CONDITION

A high and negative correlation was found between the days to budding and the minimum air temperature during the planting period.
High and negative correlations were also found between the days to budding and the maximum air temperature and integrated mean air temperatures 10, 20, 30 and 40 days after planting.
Using data for five air temperature factors as variables, the calculated and observed numbers of days to budding were compared.
The calculated number of days to budding agreed well with the integrated mean air temperatures till 10 days and till 30 days after planting and maximum air temperatures at 20, 30 and 40 days after planting.

High and negative correlations were also found between the days to harvest and the minimum air temperature and integrated mean air temperature during the planting periods, as well as the maximum air temperatures and integrated mean air temperatures from 10 to 50 days after planting.
The calculated number of days to harvest agreed well with the minimum air temperature during the planting period, maximum air temperatures at 10, 20 and 30 days after planting and integrated mean air temperature till 40 days after planting.

VII International Symposium on Timing Field Production of Vegetables

Y. Fujime, N. Okuda

Air temperature, soil temperature, correlative coefficient, multiple regression analysis

https://doi.org/10.17660/ActaHortic.1994.371.48