Utilizing Tissue and Petiole Sampling
in Cotton Production
By Hunter Frame, Ph.D.
Field Crops Agronomist
Tidewater Agricultural Research
and Extension Center
Watch Presentation (35 min 13 sec)
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Nutrient management in cotton is critical to maximizing lint yields and quality as well as it represents a large portion of the total expense in cotton production. Petiole and tissue testing allows producers and crop consultants to make inferences about the overall nutrient management program in-season and also allows for the identification and correction of nutrient deficiencies. The presentation will identify sufficiency ranges for the primary and secondary nutrients in cotton during the bloom period and how these ranges correlate to lint yield. For example the presentation contains critical leaf nitrogen and petiole nitrate-N thresholds based on current research using contemporary varieties. Producers can utilize tissue and petiole testing to predict yield at intervals during the growing season to fine tune their nutrient management program.