Prediction of the growth of the Japanese pears 'Kousui' and 'Housui' in Nagasaki prefecture
2008
Tanaka, M.(Nagasaki-ken. Fruit Tree Experiment Station, Omura (Japan)) | Hayashida, S.
1. Prediction of flowering. To predict the flowering of 'Kousui', hourly temperature data from September through December of the preceding year were used. Accurate prediction was possible when the value 1.05 was assigned to the shift from the transition phase between endodormancy and ecodormancy (DVI12) to the ecodormancy phase (DVI2). For 'Housui' accurate prediction was possible by making the shift at the value 0.87. 2. Prediction of maturity. The number of days to maturity for 'Kousui' could be predicted using the following formula: (the average temperature during 1-34 days after full bloom) x (-3.204) + 170.84. The number of days to maturity for 'Housui' could be predicted using the following formula: (the average temperature during 5-39 days after full bloom) x (-1.835) + 174.3.
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