Table 2.
Maryblyt output of apple blossom infection according to the treatments at the averages of 31 site in 2021 to 2023
Year | Control | Treatment 1 | Treatment 2 | ||
---|---|---|---|---|---|
|
|
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No. or EIP | Control value (%) | No. or EIP | Control value (%) | ||
2021 | |||||
No. of spray | 0 | 0.06 | 2.00 | ||
No. of BIR-I days | 0.06 | 0.0 | 100 | 0.0 | 100 |
No. of days over 100 EIPa | 4.81 | 4.77 | 1 | 0.26 | 95 |
Accumulated EIP over 100b | 323.3 | 315.2 | 3 | 2.5 | 99 |
2022 | |||||
No. of spray | 0 | 1.77 | 2.87 | ||
No. of BIR-I days | 1.97 | 0.0 | 99 | 0.16 | 87 |
No. of days over 100 EIP | 7.55 | 4.55 | 40 | 1.23 | 84 |
Accumulated EIP over 100 | 407.5 | 215.5 | 47 | 22.9 | 94 |
2023 | |||||
No. of spray | 0 | 0.40 | 2.14 | ||
No. of BIR-I days | 0.31 | 0.09 | 70 | 0.0 | 100 |
No. of days over 100 EIP | 2.34 | 1.97 | 15 | 0.0 | 100 |
Accumulated EIP over 100 | 70.1 | 59.1 | 16 | 0.0 | 100 |
The control was unsprayed, treatment 1 was to spray as soon as the model warns BIR-I and a second spray when the day before the rain forecasted, and treatment 2 was to spray as soon as the model warned BIR-I or BIR-H, followed by a second spray 3 days after the first, a third spray either when the infection alert (BIR-I or BIR-H) was given.
BIR-I is stands for blossom infection risk-infection, which is the highest warning level during the flower opening. BIR-H is stands for blossom infection risk-high, which is the second highest warning level during the flower opening.
No. of days over 100 Epiphytic Infection Potential (EIP) is the number of days when EIP is over 100 degree hours during the blossom opened.
Accumulated EIP over 100 is the accumulation of EIP during the blossom opened.