Disease / Insect / Weed

Detection of insect damage in wheat and sorghum and predicting insect.  2002.  Michels, J.  Amarillo/Bushland.  A three-year study determined that greenbugs in sorghum are affected by irrigation and plant density. Greenbugs per plant decreased as plant populations increased and increased as irrigation levels increased.
With six years of data, we have determined the optimal start date to begin accumulating degree days (3/10-11), and have also determined the optimal temperature threshold for Western corn rootworm adult emergence (6.67C).

2002PAReport-Michels.pdf, 673.9 kilobytes  

2002 Annual Precision Agriculture Report for Texas High Plains.  2002.  Major, J.  Texas A&M Research and Extension Center - Lubbock.  The South Plains AgriPartners program facilitates Precision Ag initiative technology transfer from the research scientist and Extension specialist project teams to producers and any clientele seeking precision farming information via the internet.
South Plains AgriPartners Demonstration Technicians work under the supervision of Extension specialists and County Extension Agents to assist in the implementation and evaluation of a variety of larger "farm-size" applied research Precision Ag projects.
Through the use of South Plains AgriPartner technology transfer funds, farmer-friendly Precision Ag publications are developed and electronic technology transfer capabilities are updated to facilitate/accelerate dissemination of information to the public.

PrecisionAg2002report1.pdf, 17.1 kilobytes  

Prediction, detection, and quantification of plant diseases with remote sensing technologies.  2003.  Rush, C. M., K. Steddom and F. Workneh  Bushland, Texas.  Remote sensing technologies have the potential of differentiating between agronomic stresses by quantifying plant pigments such as carotenoids and anthocyanins.

2002PAReportFormandLetter.pdf, 1.0 megabytes  

Panhandle AgriPartner Demonstrations, Surveys and Observations in support of the Precision Agriculture Initiative.  2002.  Robinson, B. and O. R. Jones  21 Panhandle Counties.  AgriPartners conducted 96 on-farm crop and irrigation demonstrations in 2002, involving 10,000 acres and 60 producers, resulting in effective technology transfer of improved irrigation and crop water management practices.

PArpt2002AgriPartners.pdf, 40.2 kilobytes  

Weed Mapping and the Economic Benefit of a Light-Activated Weed Sprayer in Texas Southern High Plains Peanut and Cotton Production.  2002.  Dotray, P. A., W. Keeling, M. Schubert, E. Segarra and A. R. Brashears  New Deal.  Weed control using the light activated sprayer at the postemergence-directed application timing was similar to the weed control obtained from the conventional Roundup applications in two out of three years and significant herbicide savings were observed.

annual.pdf, 16.6 kilobytes  

On-Farm Precision Farming Demonstration(s) in the Texas Panhandle.  2002.  Bean, B. W.  Randall County.  Forty percent less herbicide was used with the WeedSeeker Sprayer compared to a broadcast application resulting in a savings of $3.00/acre.

PrecAGreport.pdf, 13.9 kilobytes  

Quantifying cotton aphid population profiles as a function of variable rate N and water.  2002.  Parajulee, M. N. and K. Bronson  Lubbock.  The high level of irrigation water (85% ET replacement) resulted in significantly higher leaf moisture content in cotton than the mediun and low levels of irrigation water.

Parajulee.pdf, 18.0 kilobytes  

Use of an aerial hyperspectral sensor to identify stresses in peanuts.  2002.  Wheeler, T., K. Bronson, M. Schubert, D. Porter and H. W. Kaufman  Western Peanut Growers Field.  Reflectance differences were identified with soil calcium and magnesium. Irrigation type (IWOB, LDN, LEPA) and rates could be differentiated by reflectance patterns in cotton. Root-knot nematode density in stressed areas corrrelated with reflectance.

pahyerpeanutreport1.pdf, 299.6 kilobytes  

Use of an aerial hyperspectral sensor to identify stresses in cotton.  2002.  Wheeler, T., K. Bronson, D. Porter and M. Schubert  AGCARES, Western Peanut Growers Field.  Reflectance obtained from an aerial hyperspectral sensor in cotton fields has been related to soil nitrate, phosphorus, texture, and population densities of root-knot nematode.

pahypercotton2002report.pdf, 183.5 kilobytes  

Effect of soil moisture on pod rot and management using variable rate fungicide applications.  2002.  Wheeler, T., D. Porter and M. Schubert  Western Peanut Growers Field.  Higher irrigation rate did increase pod rot. With use of fungicides and high irrigation rate, Pythium pod rot could be controlled and yields increased by 1,000 lbs (net improvement of $300/acre).

pa2002podrotreport.pdf, 1.1 megabytes  

Taking Aerial Infrared Remote Sensing to the Farmer.  2002.  Kaufman, H. W., T. Wheeler, G. Cronholm and J. Farris  AgCares.  After six years of research with aerial infrared remote sensing, nine South Plains growers were provided aerial photos of their fields in 2002. Most could see problems in their fields. All were interested in continuing the project in 2003.

2002PrecisionAgReport1.pdf, 50.2 kilobytes  

Site Specific Management of a Corn - Spinach - Cotton Rotation with Center Pivot Irrigation under Traditional and Conservation Tillage.  2002.  Piccinni, G., C. Stichler, N. Troxclair and D. Leskovar  Texas A&M Research and Extension Center - Uvalde.  IR cameras are effectively able to distinguish between biotic and abiotic stresses with the assistance of groundtruthing.

Piccinni2002PrecisionAgcomprehensivereport.pdf, 1.1 megabytes  

Precision Agriculture for Summer Grains Crops - Entomology Component.  2002.  Bynum, E., J. Bordovsky, K. F. Bronson, R. Lascano, D. Nesmith, S. J. Officer, B. Payne, G. Peterson, D. Rosenow, E. Segarra, C. Trostle, W. Xu and L. T. Wilson  Helms.  The implementation of site-specific farming practices is dependent on description of Crop Management zones (CMZ) within a field. The definition of CMZ’s should consider water, slope, soil nitrate-nitrogen, soil texture, pests and diseases.

LubbockCornEnto2002.pdf, 145.5 kilobytes  

2001 and Earlier

Document Title	Author(s)	Location	Year	File Format
				html	pdf
Precision Agriculture on Summer Grain Crops	Bordovsky et al.	Halfway	2001
The Effect of Soil Moisture on Pod Rot	Terry Wheeler	Gaines County	2001
Detection of insect damage in wheat and sorghum and predicting insect	G. J. Michels	Texas Panhandle	2001
Remote sensing of plant diseases and impact of disease on agricultural systems	Charlie Rush	Bushland	2001
Automatic Spot Sprayer Application in Row Crops	Brent W. Bean	Amarillo	2000
Weed Mapping and the Economic Benefit of a Light-Activated Weed Sprayer in Texas Southern High Plains Peanut and Cotton Production	Peter Dotray	Lubbock	2000
Equipment Development for Site-Specific Irrigation and Chemigation	James Bordovsky	Lubbock/Halfway	2000
Use of Precision Irrigation and Remote Sensing to Manage and Monitor Disease in Pathogen Infested Soils	Charles M. Rush	Amarillo/Bushland	2000
Cotton, Water, Nitrogen and IPM in Precision Agriculture	Robert J. Lascano	Lubbock	2000
Factors Impacting Development of a Remote Sensing Dependent Site-Specific Irrigation/Chemigation System	G. J. Michels	Amarillo/Bushland	2000
The Influence of Soil Moisture and Variable Rate Fungicide Application on Management of Pod Rot of Peanut	Terry Wheeler	Lubbock	2000
Cotton IPM in Precision Agriculture	L. T. Wilson	Lamesa	1999
Indirect methods for determination of root-knot nematode density for use in precision agriculture	Terry Wheeler	Lubbock	1999
Crop Management With a Position Sensitive, Multiple Rate Spray Applicator	Jim Bordovsky	Lubbock	1999
Factors Impacting Development of a Remote Sensing Dependent Site-Specific Irrigation/Chemigation System	G. J. Michels, Jr.	Amarillo/Bushland	1999