This week in Fruit IPM:
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Rutgers Cooperative Extension
Seasonal updates on diseases, insects, weeds impacting tree fruit and small fruit (blueberry, cranberry, and wine grape). Fruit Pest Alerts are also available via this category feed.
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This week in Fruit IPM:
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Brown rot of peach and nectarine fruit results from the interaction of many different factors. In Part I of this series, we discussed the various sources of inoculum and their importance for disease development (see July 21 posting). In Part II, we examined the many facets of spray application technology and [Read more…]
In part I of this article series, we discussed the sources of inoculum for fruit infection by the brown rot pathogen, Monilinia fructicola (see July 21, 2015 article).
Oriental Fruit Moth (OFM): While overall pest pressure in peaches is very low for oriental fruit moth, we are at the proper time to treat if your farm has trap captures above 6 males per trap. Timing for third brood OFM applications are as follows:
| OFM 3nd Generation Timing | ||||
| Insecticide Type | ||||
| County/Region | Degree Days by 7/22 base 45 |
Conventional | Intrepid/IGRs | Diamides |
| Gloucester-Southern | 2317 | 1st – 7/17-19, 2nd – 7/27-28 |
1st – 7/14-15, 2nd – 7/25-27 |
1st – 7/13-18, 2nd – 7/24-27 |
| Hunterdon-Northern | 2053 | 1st – 7/24-28, 2nd – about 8/5-7 |
1st – 7/22-24, 2nd – about 8/3-5 |
1st – 7/22-23, 2nd – about 8/3-5 |
Mid-July has arrived and the 2015 peach harvest season has begun in earnest. As each successive crop of fruit mature and ripen, they become susceptible to infection by the brown rot fungal pathogen, Monilinia fructicola. Since spores of this pathogen require water to germinate, the number of fruit infection periods and therefore severity of the 2015 epidemic will be very much dependent on the number of rainfalls.
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