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The time of full bloom (FB) to fruit ripening certain varieties of peach, nectarine, plum and plum is daytime temperatures between the start of the FB, and 30 d after FB (DAFB).

Typically Warm Springs accelerate crop development affected.

Almond is peach closely related, but the date of maturity of the fruit is not always closely related to the time of harvest. Usually indicates the date of the "Hull Split" (HS) to the beginning of fruit ripening.

In a recent study found research, the researchers attempted if the length of time between FB and HS to determine, in several important Californian almond varieties was based on temperatures shortly after the start of the FB.

data on the dates of FB and HS from three locations in the Central Valley of California (North, Central and South) were more than 8 years analyzed the effect of spring temperatures above to determine the duration of fruit development.

data over 28 varieties were evaluated, but only the results of 12 of the main varieties are reported here. The length of time the fruit development of FB HS was negatively correlated with the accumulation of degree-days between FB and 0 DAFB (mean R 2 = 0.51 ± 0.3) , with generally poorer correlations with degree days to 30 or 50 DAFB (mean R 2 = 0.31 ± 0.02 and 0.36 ± 0.3, respectively).

These results indicate that temperatures in the first 0 DAFB are the most important factor, the time of the mother in mature almond varieties in California.

This information is to develop a harvest prediction model is used to support interference in the planning of harvesting farmers.

Results of this study was in the Journal of Horticultural Science and Biotechnology.

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