- Dormant season oil sprays
- Dormant season copper sprays
- Dormant season urea sprays
Early Season Tree Fruit Pest Control for 2024
Southern NJ Commercial Nursery Growers IPM Roundtable (Tu) 2/27/24
- Southern NJ Nursery IPM Roundtable – Tuesday 2/27/24 6-8pm.
- The event is free but please RSVP by calling 856-451-2800 ext. 1 and mention this meeting.
- In response to many conversations, nursery visits, and phone calls I have had with folks over the last few years, this type of meeting is long overdue, especially since we all face the same pests, diseases, weeds, and seasonal problems.
- Please consider joining this face-to-face discussion centered around Nursery IPM.
-
What pests are important to you – and what questions do we need answered
-
Pest Scouting approaches – RU Pest Scouting Guides – Rutgers Plant and Pest Advisory
-
Pesticide Regimes, New Vs ‘Old’ materials – what works, what doesn’t
-
Invasive Pests and New Diseases – what to be looking for
-
Worker safety and leveraging REIs
-
Cultural practices and irrigation system modifications
Have A Say in Field Equipment Sanitation Research!
In an initiative to guide future solution and resources, the Specialty Crop Research Initiative (SCRI) has designed the Sanitation of Agricultural Field Equipment Questionnaire to begin the research process centered around field equipment sanitation.
The research will develop a more comprehensive understanding of the challenges associated with field equipment sanitation and work toward developing solutions that are effective, implementable and sustainable.
To introduce the survey and forthcoming research effort, Dr. Matt Grieshop Director at The Grimm Family Center for Organic Production and Research College of Agriculture, Food and Environmental Sciences Cal Poly, San Luis Obispo says,
“We are a group of agricultural research and extension professionals from across the United States that are curious about grower and agricultural professional perceptions about the importance of field equipment sanitation to mitigate the spread of organisms that pose human health, weed, plant pathogen or other risks.
Agricultural field equipment includes tillage implements, tractors, harvesters, cultivation equipment, trucks, trailers, sprayers, mowers, or any other piece of equipment that is shared across fields.
This information will be solely used to help frame future research questions and outreach activities. It will not be published or distributed in any form. Answering should take 5 minutes or less and is completely voluntary and anonymous.
If you have questions, comments or concerns contact Dr. Matt Grieshop at mgriesho@calpoly.edu
Thank you for sharing your experience. We truly appreciate the gift of your time and knowledge.”
Your participation is invaluable to future developments in the industry regarding food safety and equipment sanitation.
To contribute, visit here.
For any questions regarding this project, contact Thierry Besancon at thierry.besancon@rutgers.edu.
——
Thierry E. Besançon, PhD
Associate Professor / Extension Weed Science Specialist
Timely Reminder Conditions A Perfect Storm For Lettuce Tip Burn
Yesterday as we started the 5th or 6th day of cloudy, wet, high-humidity weather, my inbox had an article from producegrower.com on preliminary results of trials at The Ohio State University by Dr. Chieri Kubota, Director of the Ohio Controlled Environment Agriculture Center (OHCEAC) and Professor in the Department of Horticulture and Crop Science, and one of her graduate students, PhD candidate John Ertle. They rated the sensitivity of 20 lettuce cultivars to prime conditions to induce lettuce tipburn, exactly the conditions we’ve had this past week.
As they reported, “Tipburn is caused by calcium deficiency often seen in lettuce (Lactuca sativa) when plants are grown quickly under optimum environmental conditions. The deficiency is also known as “localized” around young leaves at the shoot tip. Therefore, tipburn occurs even with sufficient calcium fertilization of the whole plant.”
While their work was conducted for Controlled Environment Ag (CEA) production, conditions in field production can and often does replicate the controlled environment they created to induce tipburn (same issue with Blossom End Rot of tomatoes, peppers, and eggplants). Namely, “conditions that promote overall plant growth (high light, high CO2) yet suppress plant transpiration rate (low air circulation, high humidity) are known to increase the risk of tipburn. In addition, low humidity (high VPD) during nighttime increases tipburn risk in some cases.”
[Citing some of her own work, Kubota explained,] “This is because low humidity at night promotes non- stomatal transpiration (loss of water from leaf surface), reducing xylem pressure and calcium supply to the shoot tip at night.”
The Ohio State team compared various cultivars supplied by different seed companies under controlled growth conditions to induce tipburn and reported significant differences in the severity and time to beginning of symptoms, ranging from 0 to 58%. Yields were not correlated with tipburn incidence.
Researchers in California reported in Overview of Tipburn of Lettuce that their field studies also found significant differences in tipburn severity among cultivars. Richard Smith et al. concluded, “The greater issue for the development of tipburn in lettuce is the variety,” and that “persistent foggy conditions that reduce transpirational flow of calcium to all parts of the leaves in the last 6-10 days prior to harvest will trigger this disorder in sensitive varieties.”
Unfortunately, studies to find effective controls of tipburn indicate little can be done, including having adequate Ca in soils and foliar applications of Ca during the growing season. The Ca just doesn’t get to the rapidly growing tissue in time to reduce the damage. The general conclusion is to conduct your own field trials to determine best varieties for your farm.
Tree Fruit IPM Report for April 18, 2023
Tree Fruit Phenology: Tree Fruit Phenology remains advanced in peach, but development is slowing. In southern counties all peach orchards are late bloom to petal fall. Redhaven was at approximately full bloom on April 4. Plums are at shuck off. Pears are at petal fall. Red Delicious is just past full bloom. Sweet cherries are at about late bloom depending on variety. [Read more…]
Tree Fruit IPM Report for April 11, 2023
Tree Fruit Phenology: Tree Fruit Phenology remains advanced in peach, but development is slowing. In southern counties all peach orchards are late bloom to petal fall. Redhaven was at approximately full bloom on April 4. Plums are at shuck off. Pears are at petal fall. Red Delicious is just past full bloom. Sweet cherries are at late bloom depending on variety. [Read more…]