Recent Updates

Updated sulfur recommendations for cotton

Tyson Raper and Frank Yin

ARTICLE OVERVIEW 

  • 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
Ames Plantation, TN S plots
LEFT: New growth of sulfur deficient cotton will appear uniformly chlorotic (yellow) and may be stunted. This row received no S at planting. RIGHT: Applications of 10-20 lb S per acre have been shown to prevent the deficiency. This plot received 20 lb S at planting.

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

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Crop Progress – Tennessee and U.S.

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PASTURES IN NEED OF RAIN; GENERAL RAINFALL NEEDED

Rains at the beginning of the week in Middle Tennessee boosted crop conditions, improved soil conditions, and brought welcome relief from high humidity. The bulk of corn in the area is pollinating and soybean planting is coming to an end. Little rainfall over the eastern part of the State resulted in pastures remaining thin and some producers feeding hay for the third consecutive week. Despite limited rainfall in West Tennessee, crops are progressing well. Continue reading Tennessee NASS report at TN_07_05_16. The U.S. Crop Progress report can be read at CropProg-07-05-2016.

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Managing cotton plant growth in 2016

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blooms2016

Many fields in West TN reached first flower well-before the 4th.  I wouldn’t be surprised if over half of our acres will be blooming by the end of the week.  With rain and warm temperatures in the forecast, expect very rapid plant growth in areas which have adequate moisture as we move into flowering.  For those who have not applied an early shot of a plant growth regulator (PGR), you should consider doing so very soon.  Several points should be considered when attempting to regulate growth in 2016. Continue reading

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