The relationship between incidence of verticillium wilt and reflectance in a wilt nursery Conference Paper uri icon


  • A Verticillium wilt nursery was rated twice for incidence of wilt in 1040 plots. Aerial, color, infrared photographs of the nursery were used to determine the reflectance of near-infrared, red, and green color bands, and various combina-tions of these bands. Twenty-five cotton lines were replicated in 8 plots, including the susceptible variety 'Lankart 57 and the Verticillium-tolerant variety 'Paymaster (PM) 147. Incidence of wilt from the entire nursery was most highly correlated with reflectance of the green band. Incidence of wilt averaged 6 plants/plot for Lankart 57 and 2 plants/plot for PM 147 on 19 July, and 12 and 6 plants/plot on 18 August. However, reflectance of the green band averaged 146 for Lankart 57 and 150 for Paymaster 147 (not significantly different). Within a cotton line. reflectance of various color bands or band combinations was associated with incidence of wilt, but only for 8 of 25 cotton lines with the July rating, and 4 of 25 cotton lines with the August rating. Remote sensing with aerial color infrared photography can not replace visual rating for cotton lines in a Verticillium wilt nursery.

published proceedings

  • 2000 Proceedings Beltwide Cotton Conferences

author list (cited authors)

  • Wheeler, T. A., Gannaway, J. R., & Kaufman, H. W.

complete list of authors

  • Wheeler, TA||Gannaway, JR||Kaufman, HW

publication date

  • January 2000