We have been blessed with another great harvest season and it appears we may be able to finish harvest with little rain. Here on the 5th day of Oct, I would guess the average cotton acre within the state has already received the first application of harvest aids and is very close to seeing a picker. Even so, several acres have not been defoliated. This has led many to call with concerns about the cooler temperatures in the forecast over the weekend and several have asked if it is simply time to defoliate based on calendar date. Continue reading
Tennessee’s 2016 cotton crop is rapidly maturing and many of our acres will receive the first shot of defoliant in the next week. There are many factors to consider in determining timing, products and rates. In an effort to outline these decisions and provide harvest aid recommendations for the Mid-South, the 2016 Mid-South Cotton Defoliation Guide has just been updated and is now available online. To access the guide, click the image above or the included link. Please keep in mind that this was compiled as a regional guide and should be used in conjunction with your previous experiences. Continue reading
The call of the week (beyond target spot) has concerned cotton ‘turning’. In the dictionary of cotton rhetoric, ‘turning’ refers to the shift in canopy color from dark green to shades of yellow and red, or senescence, which usually coincides with the second or third week of football season. Over the past week, the crop has definitely made a turn towards finishing out the season . . . and kickoff for the first game is still a few days away. The general concern is this change has occurred much more rapidly and earlier than we would like. So are we looking at premature senescence and yield penalties? Continue reading
Observing canopy characteristics during the growing season is a good way to understand the plant’s response to its environment. Occasionally, portions of the canopy may develop reddish-purple or red tones. The synthesis of anthocyanin, the pigment which typically causes the reddening, is commonly increased after leaves are exposed to light following multiple abiotic and biotic stresses. Continue reading
Commercial Pesticide Applicator Recertification Points can be obtained in C1, C10 and C12. Seven points will be available in each category. A total of 13 Certified Crop Advisor Continuing Education Units will also be available. See the complete breakdown here.
Tyson Raper and Frank Yin
- Sulfur deficiencies are starting to show up this year in TN cotton.
- Deficiencies appear as uniform chlorosis of new growth, slight stunting
- Soil applied applications of ammonium sulfate can still remedy the deficiency
- Late season deficiencies can be addressed with (2) applications of magnesium sulfate (Epsom salt)
- UT currently recommends 10 lb S per ac for cotton
Sulfur (S) deficiencies are beginning to appear in some West TN cotton fields. The image above was taken last week at Ames Plantation in a trial conducted by Dr. Frank Yin. Although the soils at that location (Collins fine sandy loam) are coarser than our typical silt loam, I was surprised to see such a strong response to the nutrient by Continue reading
UT’s Soybean Scout Schools are scheduled in July for the dates and locations below. The programs are supported by the Tennessee Soybean Promotion Board and include basic information about crop development, scouting procedures, and Continue reading