The Northeastern IPM Center is publishing a growing collection of information about pests in both English and Spanish. Recent additions to the collection are a page dedicated to brown marmorated stink bug and a database of IPM resources.
The captures of tufted apple budmoth, obliquebanded leafroller and codling moth appear to be on the decline, but the fourth generation of Oriental fruit moth is likely to still be present in orchards during September and into October. Brown marmorated stink bug monitoring traps placed on trees located on the border of woods as well as traps placed in the first row of orchards, which sparsely collected any stink bugs for most of the current season, now are collecting many nymphs and adults.
As most of us know, our IPM systems were turned upside down after the introduction of BMSB around 2010. For the majority of apple growers that had to give up on their IPM programs to use harsh pesticides to control BMSB, this article contains some guidelines and control strategies for minimizing the impacts on mites for the next season.
The fungi causing fruit rots can be quite stealth since spores will land on the fruit and cause symptoms after the fruit have been in storage. We have had excellent conditions for fruit rots this month with frequent rain and stretches of warm weather.
Traps placed on trees located on the border of woods as well as traps placed in the first row of orchards, which rarely collected any stink bugs for most of this season, now are collecting many brown marmorated stink bug nymphs and adults. Since not every orchard will experience the same pressure from BMSB, cautious scouting and monitoring of the vegetation surrounding an orchard should be very helpful in deciding if any special stink bug control treatment is necessary.
Are you interested in food safety certification for your farming operation? Penn State Cooperative Extension and Pennsylvania Department of Agriculture are partnering to provide mock audit workshops throughout our state. Mock Audits are a great introduction to food safety, and are also useful to those well acquainted with Good Agricultural Practices as well as other Food Safety Standards and who are looking forward to the next step.
Moderate temperatures observed so far this month extended the flights of the second generation of tufted apple bud moth and obliquebanded leafroller. Colder than usual weather also stretched the traditional periods when the control of these two pests may be needed.
Spotted wing drosophila (SWD) that are in the remaining blackberries and blueberries being harvested could build up and move into adjacent late season raspberries. If your trap catches are high and you have had some problems with infested fruit, consider a post-harvest spray to reduce populations that are feeding on the last unpicked berries and dropped fruit.
Join Penn State Extension for this ten week program which will provide a foundation on which to build a commercial tree fruit business. The course material will start with orchard site selection and cover all aspects of growing tree fruit. We will conclude with marketing and a financial analysis. It is designed to meet the educational needs of new growers, starting with the basics and moving into the latest practices.
Some of the commonly used developmental models seem to be overestimating the pace of development for codling moth and Oriental fruit moth populations in some orchards. Please use on-site monitoring as the main indicator in deciding if and when a pesticide application is necessary. All stages of brown marmorated stink bug are being observed in and outside of orchards with some locations already reporting injured fruit.
Spotted wing drosophila can attack ripening fruit, but like all other fruit flies, breed in decaying fruit. Trap catches are increasing in blackberry and late season raspberries and sprays should be maintained in blackberries until harvest is complete. Sprays on late season raspberries should start now if there is any color showing on the berries.
More than half the flies caught in traps this week were spotted wing drosophila rather than the usual 5% or less. As blueberry harvest finishes in the region, blackberry and grape remain the main crops currently at risk and should be kept covered with short pre-harvest interval insecticides.
Some of the commonly used developmental models seem to be overestimating the pace of development for codling moth and Oriental fruit moth populations in some orchards. Therefore, such models are not very reliable indicators of the actual pest situation. Please use on-site monitoring as the main indicator in deciding if and when pesticide application is necessary.
A number of calls have come in this year regarding blueberry plants with few leaves – though some canes often appeared nearly normal – and berries on the same plant that ranged in size from normal to very tiny.
Spotted wing drosophila (SWD) numbers are up in most Pennsylvania and Maryland locations, and late blueberries and blackberries are at risk. Commercial SWD lures are supposed to last only 4 weeks and should be changed out soon.
While in most orchards the brown marmorated stink bug numbers are still very low, at some locations we spotted the first fruit injuries caused by this pest. Populations of spotted wing drosophila might be higher than in the past this season due to tart cherry blocks that were not harvested because of a light crop and their potential as reservoirs for SWD populations to build.
Management is discussed for controlling the physiological disorder necrotic leaf blotch, which is being reported throughout the area. Managing late season bacterial spot and rot diseases on stone fruit is also discussed. Disease infection periods to date for apple scab, fire blight, cedar apple rust and cherry leaf spot are included to help growers determine where control failures may have occurred this season.
Second generation flights of tufted apple bud moth and obliquebanded leafroller are underway in South-Central PA orchards, and third generation Oriental fruit moth and second generation codling moth flights are beginning. During our weekly searches on various actual and potential BMSB hosts we are continuously finding all instars of brown marmorated stink bug.
This week the U.S. Department of Agriculture (USDA) announced Noninsured Crop Disaster Assistance Program (NAP) assistance for losses to bush or tree fruit crops due to frost or freeze during the 2012 crop year. The program, authorized by the 2014 Farm Bill, provides supplemental NAP payment to eligible producers.
Plant tissue analysis is used to directly measure the amount of nutrients in fruit trees, and for established perennial crops, is usually a better indicator of nutrient status than a soil test. Nutrient management plays an especially critical role in new high density plantings because the trees come into production earlier, have higher per acre yields and smaller root systems.