Use of Guar (Cyamopsis tetragonolaba (L.) Taub) for cover crop rotation and green manuring

2007 Annual Report for OS06-031

Project Type: On-Farm Research
Funds awarded in 2006: $15,000.00
Projected End Date: 12/31/2007
Region: Southern
State: Texas
Principal Investigator:
Dr. Russell Wallace
Texas A&M University AgriLife Extension

Use of Guar (Cyamopsis tetragonolaba (L.) Taub) for cover crop rotation and green manuring


2007 Summary

The second year of the trial included following guar and southern pea planting with yellow squash. The objective was to determine whether each cover crop or green manure crop the preceding year had any influence on yellow squash production. Squash was planted at two locations. At the on-farm location, squash emergence was very poor, and was replanted, but emergence continued to be poor. At the other site (research farm), emergence was excellent, however, an accidental overspray of a herbicide occurred about 3 weeks following emergence and killed the crop. The squash was replanted, however, do to herbicide residuals, no crop emerged. As a result, no data was able to be recorded from either site. A no-cost extension was applied for to repeat parts of the trial in 2008.

Objectives/Performance Targets

The objective of the second year of the trial was to evaluate the effects of guar and southern pea green manuring on yellow squash growth and yield.


No data was able to be recorded due to poor emergence and accidental over-spray by an adjacent researcher with a residual herbicide.

Impacts and Contributions/Outcomes

No impacts for 2007.


Amy Jones
Grower, Graduate Student
Sunburst Market Farms
1511 East CR 7140
Lubbock, TX 79404
Office Phone: 8064450212
Ellen Peffley
Texas Tech University
MS 2122
Dept. of Plant and Soil Science
Lubbock, TX 79409
Office Phone: 8067422637