December 3, 2023

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Midseason checkup for cornfields | Farm Progress

3 min read

Maybe tractor jockeys plant corn and do not return until eventually harvest, but gain-minded farmers return several periods. Here’s betting you are right after prime yields and income. Check out these 6 causes why it could shell out to go to cornfields now.

Dave Nanda, director of genetics for Seed Genetics Direct, compiled this checklist and furnished tips for scouting. Seed Genetics Immediate sponsors Corn Enjoy ’21.

Associated: Cool May will cause delays in corn emergence

1. Pull tissue samples. Betsy Bower, agronomist with Ceres Options in west-central Indiana, shared ideas for pulling tissue samples to keep track of nutrient stages in the Corn View ’20 discipline. Ceres is providing sampling resources and masking fees of transport and lab analysis again this yr. The initial sample at V5 indicated that portion of the area needed sulfur. The grower produced a foliar software. He remaining check out strips on both equally the conventional-tilled and no-till sides of the discipline. Programs identified as for sampling parts that did and didn’t receive foliar fertilizer individually at the V12 sampling time, and again in the reproductive stage. At V12, 25 leaves are gathered, pulling the prime leaf with a collar. At R1 or after, 25 ear leaves are pulled to make a single sample.

2. Watch nutrient levels. Tissue sampling helps, but you can also use visual observation. Are any locations displaying nitrogen or potassium deficiencies? If nitrogen deficiency is exhibiting up, is there time for a late-season application?

3. Appear for ailment lesions. Which sickness you see on leaves will differ based on climate problems. Grey leaf spot is feasible each and every 12 months. Seem for little, rectangular lesions. If they’re several and headed toward the ear leaf, look at producing a fungicide software.

4. Continue to be inform for insects. The largest risk right until ears are pollinated is silk clipping. Japanese beetles and corn rootworm beetles are the major two culprits. Nanda notes that if silks are clipped within one particular-half inch and pollination is only 50% comprehensive, with beetles nevertheless active, treatment method may possibly be warranted. Pull back again shucks and do the shake examination to evaluate pollination achievement. If silks tumble absent, kernels are pollinated.

You must also be on the lookout for western corn earworm, particularly in northern regions, and for European corn borer. You are extra most likely to see corn borer in non-GMO corn or corn without having the earlier mentioned-ground GMO insect trait. The next brood can burrow into stalk shanks, causing personal injury and opening paths for disease an infection.

5. Assess weed handle. Fork out interest to how well your herbicide application labored. If you run throughout patches of perennial weeds these kinds of as Canada thistle, quackgrass or johnsongrass that survived your weed handle attempts, make notes for upcoming a long time. If it’s a no-till area, be warn for factors this kind of as dandelions that escaped command.

6. Acquire final populace counts. Even if you did counts when corn was modest, lay off some 1/1,000 row spots, marking off 17 ft, 5 inches in 30-inch rows. Count harvestable ears. Repeat your counts at several locations at random. Nanda also advises having to pay awareness to vegetation that may possibly have emerged late and will not add a whole ear. If they are not creating an ear, they’re worse than weeds for the reason that corn herbicides won’t get rid of those people crops, he claims. | Newsphere by AF themes.