Category Archives: Corn

Cover Crop Burndown

 

Good soybean stand in cover crop cereal rye

It is cover crop burndown time. There is no one size fits all recommendation for cover crop control.  It really depends on the environment and the cover crop species in the field.  With rain predicted over the next few days, one should be mindful that cover crop burndown can be tricky during periods of saturated soil conditions. This is particularly true with systemic herbicides where translocation of those herbicides to growing points can become limited. Continue reading

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Converting Between Mehlich 1 and 3 Soil Test Values for West Tennessee Soils

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Most of the commercial and state soil testing laboratories in and around Tennessee use and prescribe fertilizer recommendations based on Mehlich 3 soil test extraction method. Most growers may receive soil test results from laboratories that utilizes Mehlich 3 soil test extraction method. However, The University of Tennessee gives fertilizer recommendations based on the Mehlich 1 extractant. This makes it difficult for growers to take advantage of The University of Tennessee fertilizer recommendations. Currently, the Mehlich 1 and 3 conversion equations used in TN were derived from the University of Kentucky, which were based on Kentucky soils (Table 1). Continue reading

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2023 County Standardized Trials-Corn

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39 Corn Hybrids were evaluated in the 2023 CST program.  With the weather we had this summer, our yields are very strong with an overall average across all hybrids and locations over 210 bu/ac. With the many locations/replications in these trials, we can look at performance across many soil types and weather/climate conditions that you can use to help select high yielding, consistent hybrids to bring to your farm.  Contact your local county agent for more details or if you need a print out of this data.

These CST plots are large strip trials located ‘on-farm’ with a minimum of 300 feet in length.  Inputs and management decisions are on a by location basis and determined by the cooperating producers.  Three relative maturity groups divide the trials, Early Corn will be 113 day and earlier, Medium Corn will be 114-116 day, and Full Corn is 117 day plus.  Thank you to everyone involved in the CST program for your support and contributions: County Agents, UT Extension/Research, Growers, Industry, Retail.

Below are the results for our 3 RM groups.  Click on the table to open a PDF of these tables.  These results can also be accessed on https://search.utcrops.com/

Early Corn <114 day

Medium Corn 114-116 day

Full Corn >116 day

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