Fertility

In-Field Correlation of Bradyrhizobium Nodulation with Soil Parameters and Peanut Yield in West Texas.  2002.  Trostle, C. and B. Porter  Near Brownfield, Texas.  Site specific agriculture notes high variability in Bradyrhizobium nodulation among individual peanut plants as well as big differenes within a field. Understanding the link of soil properties, nodulation, and yield may reduce N fertilizer for peanut.

2002PeanutPARhizReportTrostle.pdf, 19.8 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  

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  

Spatial Variation of Soil Nitrogen Mineralization and Other Soil Properties Potentially Related to Crop Yield and Environmental Quality.  2002.  Hons, F. M. and R. Lascano  College Station.  Residual soil nitrate determined to 60-cm depth was more highly correlated with corn grain yield than shallower or deeper samplings, indicating that sampling to this depth should improve efficiency of fertilizer recommendations.

PrecisionAgAnnualRpt-Hons2002.pdf, 631.7 kilobytes  

Field scale-testing of variable-rate nitrogen and water for Texas High Plains Cotton.  2002.  Bronson, K., W. Keeling, T. Wheeler, R. Boman, J. Bordovsky and J. Booker  Lubbock.  2002 Precision agriculture results at AG-CARES, Lamesa indicated that nitrogen fertilizer response was observed at 85 % ET irrigation rate, but not at 64 or 75 % ET. Nitrogen fertilizer, therefore is needed in smaller amounts when irrigation capacity.

PA-2002ReportOn-farmproject-Bronson.pdf, 31.4 kilobytes  

Spatial characterization of soil properties and peanut yield.  2002.  Bronson, K., C. Trostle and M. Schubert  Lubbock.  2002 results from Seminole, TX revealed that high soil K areas of the 34-ac study area had the lowest peanut yields. High soil K may be interfering with Ca uptake. This suggests site-specific Ca fertilization in low Ca and high K soils only.

PA-2002Reportpeanuts-Bronson1.pdf, 21.7 kilobytes  

2001 and Earlier

Document Title	Author(s)	Location	Year	File Format
				html	pdf
In-Field Correlation of Rhizobium Nodulation with Soil Parameters and Peanut Yield Using Site-Specific Precision Agriculture Techniques in West Texas	Calvin Trostle	Gaines County	2001
Precision Agriculture on Summer Grain Crops	Bordovsky et al.	Halfway	2001
The Balance and Variability of Water/Nitrogen within Large Agricultural Fields	Robert J. Lascano	Lamesa and Helms Farm	2001
On-farm testing of precision agriculture technologies for Texas High Plains Cotton	Bronson et al.	Lubbock	2001
Spatial characterization of soil properties: effect on peanut yield	Bronson et al.	Lubbock	2001
On-farm testing of precision agriculture technologies for Texas High Plains Cotton	Kevin Bronson	Lubbock	2000
Cotton, Water, Nitrogen and IPM in Precision Agriculture	Robert J. Lascano	Lubbock	2000
The Balance and Variability of Water/Nitrogen within Large Agricultural Fields	Robert J. Lascano	Lubbock	1999