Friday, 6 January 2006 - 11:15 AM

Association of bug-induced boll damage symptoms with hard lock, lint yield and quality

Carter Goerger1, D. Ames Herbert1, John Van Duyn2, Sean Malone1, and Carlyle Brewster1. (1) Virginia Tech, Tidewater Agricultural Research and Extension Center, 6321 Holland Road, Suffolk, VA 23437, (2) North Carolina State University, The Vernon James Center, 207 Research Station Road, Plymouth, NC 27962

A random sample of 300 first position quarter-sized bolls was located in each of five growers' cotton fields identified as having stink bug infestations. Bolls were subdivided into three subsets of 100 bolls each (same-day, time-skip one, and time-skip two). The node above cotyledon and number of visually obvious external feeding punctures (sunken lesions) were recorded for each boll. The same-day boll subset was removed on the day the number of external feeding punctures was recorded, and individual bolls were inspected for internal damage to carpel walls and seed. The time-skip one subset was removed when bolls were at the cracked boll stage and inspected for lint and seed damage. The time-skip two subset was removed when bolls were fully open and inspected for lint and seed damage. Lint from each damage category was grouped and ginned and graded separately. Regression analyses were conducted to determine the relationship of each damage category to lint yield and quality.

See more of Cotton Insect Research and Control Conference - Session A
See more of Cotton Insect Research and Control Conference

See more of The Beltwide Cotton Conferences, January 3-6 2006