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ARS Home » Plains Area » College Station, Texas » Southern Plains Agricultural Research Center » Aerial Application Technology Research » Research » Publications at this Location » Publication #349729

Research Project: Aerial Application Technology for Sustainable Crop Production

Location: Aerial Application Technology Research

Title: Aerial remote sensing survey of Fusarium wilt of cotton in New Mexico and Texas

Author
item Yang, Chenghai
item WOODWARD, JASON - Texas Tech University
item NICHOLS, ROBERT - National Cotton Council

Submitted to: National Cotton Council Beltwide Cotton Conference
Publication Type: Proceedings
Publication Acceptance Date: 1/18/2018
Publication Date: 5/9/2018
Citation: Yang, C., Woodward, J., Nichols, R. 2018. Aerial remote sensing survey of Fusarium wilt of cotton in New Mexico and Texas. National Cotton Council Beltwide Cotton Conference. p. 550-554.

Interpretive Summary: Fusarium wilt of cotton, caused by the fungus Fusarium oxysporum f. sp. vasinfectum (FOV), is a common cotton disease. Recently, the more virulent FOV race 4 (FOV4) has been identified in the New Mexico-Texas border area near El Paso, Texas. In this study, a preliminary aerial remote sensing survey was conducted in September 2017 for mapping the distribution and severity of this emerging disease in the area. Over 600 pairs of true-color and near-infrared images were acquired from three apparently infested areas with a total acreage of about 40,000 acres near the El Paso area. FOV4-infested areas could be detected from the images for the infested fields that had been identified by ground observations and pathogen sampling. This preliminary aerial survey has provided some useful information on FOV4 infestation in the New Mexico-Texas border area, but additional research is needed to evaluate different types of imagery for monitoring the progression of the disease over the season and for distinguishing it from other stresses.

Technical Abstract: Fusarium wilt of cotton, caused by the fungus Fusarium oxysporum f. sp. vasinfectum (FOV), is a widespread cotton disease, but the more virulent FOV race 4 (FOV4) has recently been identified in the New Mexico-Texas border area near El Paso, Texas. A preliminary aerial remote sensing survey was conducted on September 20, 2017 for mapping the distribution and severity of this emerging disease in the area. An aircraft equipped with multispectral, hyperspectral and thermal imaging systems was flown at approximately 5000 ft above ground level from three apparently infested areas: a 3800-ac area to the northwest of El Paso, Texas and a 39,000-ac area and a 2500-ac area to the southeast of El Paso. The multispectral imaging system consisted of a RGB camera and a near-infrared (NIR) camera with a pixel array of 7360 x 4912. Over 600 pairs of RGB and NIR images were acquired from the three areas, and the images for each area were mosaicked using Pix4D software. Hyperspectral and multispectral imagery was also acquired simultaneously. The mosaicked RGB and color-infrared images were examined visually to determine the characteristic signatures of FOV4-infested fields that had been identified by ground observations and pathogen sampling. The hyperspectral and thermal imagery was also evaluated. Due to the potential decline in the value of the infested land, no specific field or land information will be identified in this paper. This preliminary aerial survey has provided some useful information on FOV4 infestations in the New Mexico-Texas border area, but other coexisting stresses such as other FOV races, nematode infestation and soil-related problems can complicate the identification. Therefore, additional research is needed to evaluate multispectral imagery as well as hyperspectral and thermal imagery for monitoring the progression of the disease over the season and for distinguishing it from other stresses.