As planting wraps up, the challenges are not over yet. In a crop year like this there are more variables in your field to consider than in a normal year. We are not too far off from GDU averages so far this year but since crops went into the ground later than normal, we are 250 to 350 GDU’s behind normal crop development. This means crop maturity will be 2 to 3 weeks later than on a normal year. Disease and insects are still on track to appear at normal times, causing a larger footprint than we would usually see. Tar spot, anthracnose, grey leaf spot and Goss’s wilt are a few of the diseases that we have been keeping an eye out for and we are starting to see a few of them popping up in fields. Applying early fungicide is a great layer of protection to protect your yields and it is now that time to start those applications. In soybeans, high moisture means sudden death syndrome and late season phytophthora. To protect against those diseases, fungicide application timing is crucial with soybeans (R1 to R6 growth stages). We are not at that point yet in soybeans but it’s something to keep in mind because with high disease pressures, fungicide will almost always show a return on investment.
Insects should continue to be a focus when scouting this year, even if we are yet to find anything at economic thresholds. In corn, true armyworm moth flight numbers continue to be high and cool conditions are favorable for feeding, they will first show up in field perimeters and crops will have a ragged appearance with defoliation from leaf edge to midrib. In soybeans, bean leaf beetles have been showing up with small amounts of defoliation, far from the 40% economic threshold. Lastly, in hay, all insect counts are still low and have not been an issue to this point.
If you have any questions or concerns in your fields, contact your local Landmark agronomist to make a plan that will protect your yields.
Have a great week.
With grain corn planting coming to a stop and with the last of the soybeans being put in the ground, attention has been switched to post spraying and topdress. With the rain we had earlier in the year, there was a good chance that some of your upfront application of fertilizer may have had more runoff or nitrification than normal. A tissue sample and top dress or side dress application to replenish the missing nutrients, is a great way to keep the crop on the right track. Along with this wet weather, there are a lot of diseases starting to rear their ugly heads. So now is a good time to think about a fungicide application with your second pass of spraying, to help protect your crop.
Have a good week.
Probably accurate to report that the rainy year has dampened a lot of spirits, including farmers and suppliers of service and products. It’s late June already but there is a lot of season left and we need to make the best of it.
This past week was another cool, damp, windy period. Farmers have kept going, getting fields planted between rain clouds and strong winds. Wind hampered our ability to spray a few times this week.
Warm weather moved corn development along and soybeans are emerging quickly in 55F degree overnight soil temps. Our big challenges have been keeping machines moving on firm fields and having enough drivers on hand.
We have been busy spreading fertilizer on hay fields following first cutting schedules. Insect pressure has remained light, though it is still advisable to continue monitoring for weevil activity in alfalfa and cutworm damage in corn.
Applying nitrogen to corn is also a focus this week. Side dressing UAN and top dressing urea are effective methods. We know that corn uses the greatest amount of nitrogen between now and tasseling, so if weather permits, now is the time.
This week soybeans are getting early post emerge spray for weed control. As beans develop fast with moisture and heat, the weeds grow even faster! Some untreated waterhemp is already a foot taller than emerging beans. Post sprays should include contact and residual spray for best results for clean fields. Farmers are no longer able to rely on only glyphosate treatments for weed control.
Once beans come through the soil surface, it is best to wait a week or so, if possible, for beans to reach the first trifoliate leaf stage before driving over them. They then handle the stress of traffic and spray better. Also, be sure to use foliar Max-In Manganese for post spray tank mixes on beans, and Max-In ZMB on corn. Super results come from this treatment and recent years show beans and corn rebound quickly with this added boost. Consider fungicide as well during this time. Keeping the crop healthy may ensure best yields.
Wheat may respond well to fungicide applied now that it is heading out.
With so much invested in the crops so far this season, best advice is to give your crops every possible advantage and boost.