Spring seeded spinach weed control recommendations are limited to Ro-Neet (if available) and Dual Magnum.
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Archives for March 2014
March 21, 2014 Brad Majek
Weed Control in Spring Seeded Spinach
March 20, 2014 Jack Rabin
Don’t Push High Tunnel Early Tomatoes Too Hard
A fast and vigorous start for the high tunnel tomato crop is everyone’s goal. Proper and coordinated irrigation and fertility programs can help.
However, there are limits to how much growers can ‘push’ the crop, especially by feeding it. For fertigated tomato crops, ‘feed and water according to documented need’ may be a useful rule of thumb.
– Matt Kleinhenz, Extension Vegetable Specialist, OSU
There are take home messages for New Jersey growers in this week’s VegNet. Vegetable Extension Specialist Matt Kleinhenz discusses grower calls concerning expectations for early tomatoes in high tunnels. Go to VegNet Volume 21 Number 2 to read the full article.
- Light and temperature drive demand for water and nutrients during young crop establishment. Currently, day length is still short, light level and temperatures are low.
- The higher temperatures seen in the high tunnel does not overcome the starving effect of low light – and may, surprisingly, lead to slower growth of young plants.
- Optimize irrigation water temperature to avoid adversely impacting soil warming and bathing the root zone in cool water which slows plant growth.
- Aggressive irrigation and fertility programs during crop establishment cannot override crop physiology and growing conditions.
March 20, 2014 Brad Majek
Weed Control in Overwintered Spinach
Overwintered spinach weed control requires the control of several troublesome winter annual weeds, including chickweed species, mustard species, henbit, and annual bluegrass.
Common Chickweed in Overwintered Spinach
The only postemergence broadleaf herbicide currently recommended and available for use in spinach is Spin-Aid. The rate range for Spin-Aid is 3 to 6 pints per acre, for the control of seedling annual broadleaf weeds.
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March 20, 2014 Brad Majek
Stinger Labeled for Apple Orchards
Stinger has been labeled for weed control stone fruit orchards for years, and is now labeled for use in apple orchards. The weeds controlled fall into two botanical plant families, composites and legumes.
Use Stinger to control susceptible weeds
in the tree row and sod row middles.
March 18, 2014 Andy Wyenandt
Bacterial Leaf Spot Update
Last summer a pepper differential trial was done near Vineland, NJ to help determine if new races of bacterial leaf spot (BLS) were present in the area. At least 11 races of BLS have been identified to date.
…look at ways to detect the presence of BLS susceptibility on your farm. Run your own internal “tests”: plant a few cultivars with known BLS resistance and take note which ones develop symptoms. Be ready to adopt cultivars with a larger BLS resistance package.
March 17, 2014 Andy Wyenandt
Understanding Damping-off Pathogens
Damping-off is caused by a number of important vegetable pathogens and is very common during transplant production and early-spring. Damping-off can kill seedlings before they break the soil line (pre-emergent damping-off) or kill seedlings soon after they emerge (post-emergent damping-off). Common pathogens that cause damping-off include Pythium, Phytophthora, Rhizoctonia and Fusarium spp.
It is extremely important to know which pathogen is causing the damping-off problem and which fungicide to properly apply.
