North Dakota State University Extension Service - Burke County |
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Burke County AgAlert |
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May 17, 2007 WINTER WHEAT AND EARLY SEASON FUNGICIDES Winter wheat in the 4-5 leaf stage may benefit now from an early season fungicide application in combination with herbicides, especially if planted on wheat or barley stubble. Recent spring rains and moderate temperatures may activate the tan spot fungus in wheat residue and make these winter wheat crops vulnerable to tan spot infection. Data from NDSU winter wheat studies show yield response to early season fungicide application in years when weather was favorable for wheat and disease development. Studies across winter wheat cultivars at Lisbon, ND over 3 years indicated yield responses to a single early season fungicide application ranged from 0 bushels in a dry year with little disease development to 6 bushels per acre in a wet spring when disease developed early in the growing season. Early season fungicides tested included half of the full label rates of Tilt, Quilt, Stratego, and Headline. Subsequent applications at flowering provided additional yield and disease control. CORN NEEDS HERBICIDES APPLIED EARLY Early planted corn is approaching the 2-leaf stage. It is very important to control weeds early in corn. Significant yield losses will occur if weeds are allowed to compete with corn past the 4 leaf or 4 inches in height. Conventional weed control, glyphosate, and/or glyphosate + post broadleaf herbicide programs needed to be considered soon with early planted corn ad should be applied prior to the corn reaching the 4 inch high stage. WILD OATS IN BARLEY PUMA: is labeled in barley up to the emergence of the fifth leaf or 580 GDD. Here are some helpful reminders when using Puma on Barley
Axial: Is labeled on barley from the 2-leaf stage up to the pre-boot stage of the crop. Here are some helpful reminders when using Axial on Barley.
Axial Tankmix instructions
BROADLEAF WEEDS AND PEAS DON’T GO TOGETHER Many pea fields are approaching the 3 to 4 node stage. Broadleaf weeds need to be controlled early in peas to avoid losses in yield. Also, applying broadleaf herbicides to small weeds and small peas will reduce risk of pea injury. Do not apply POST broadleaf herbicides when temperatures are above 85F or when peas are under heat/drought stress. Spraying broadleaf weeds in pea reminders: 1. Basagran needs to be applied to small weeds for it is a contact herbicide. Basagran only provides fair control of kochia and good control of Russian thistle. Basagran will provide good-excellent control of cotyledon to 3-leaf volunteer canola. However, Basagran will only provide fair (60%) control of volunteer canola in the 3 to 6-leaf stage. 2. Rezult is a co-pak of Basagran (bentazon) and Poast (sethoxydim). The co-pak of Result at 3.2 pt/acre (1.6 pt/A Rezult G and 1.6 pt/A Rezult B) equals 2 pints of Basagran and 1 pint of Poast per acre. Rezult at 3.2 pt/acre should be applied, especially if no glyphosate burndown, preplant herbicide or preemergent herbicide was applied. 3. For suppression of kochia and Canada thistle, two applications of Basagran at 1 pt/acre at 7 to 10 day interval improves control. 4. Raptor CAN NOT be applied to peas alone. Basagran at a minimum of 6 fl oz/acre needs to be applied with Raptor to reduce risk of injury to field pea.
HOW TO GET RID OF THE UNWELCOME ANT As the weather warms, many of us are finding more and more unwelcome visitors in our home. They eat our food, they make a mess, and just when we think we are rid of them, there they are again—the household ant. The first effort in the home is usually sanitation, cleaning all kitchen surfaces, and vacuuming daily. Ant trails can often be disrupted with a mild solution of vinegar and water. If the problem persists, pesticides may be necessary. Simply spraying the ants you see is not an effective means of control. The pheromone trail still exists for other ants to follow. The most effective control is to destroy the nest. The nest can be found by watching where the ants go, in the case of carpenter ants this is best observed at night. Once the nest is discovered it can be treated, or even removed, in the case of rotten wood. If using a liquid insecticide it is best to apply with up to 2 quarts of water to thoroughly drench the ant nests. Retreatment of nest sites may be necessary if ant activity resumes. If it is difficult to find the nest there are other alternatives. Ant bait type traps have been very effective in my home. They can be found at most discount stores by mouse traps and other household pest control items. Simply set them where you have seen ant traffic and the ants will carry the insecticide back to the nest and do the work for you. Ant baits may require a few weeks to eradicate the colony, and may work better for some ant species than others. Another alternative would be to spray an insecticide barrier around the home. If it is not clear the exact location where ants are entering, treating a 2 to 4 foot wide area around the entire building will deter ants from entering. This method is only temporary and retreatment may be necessary.
NOTE: Mention of insecticide name does not constitute endorsement. ALWAYS read and follow label.
Dan Folske |
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