Certified Crop Advisors of Arkansas and members of the Arkansas Crop Consultants Association were surveyed in fall 2006 through direct mail to assess current weed management practices and needs in rice from both a research and educational perspective. Consultants reported scouting 564,000 of the possible 1,400,000 acres (40%) of rice grown in Arkansas. Preemergence herbicides most often recomme...

Variability of weed infestation needs to be assessed for site-specific weed management. Since manual weed sampling is too time consuming for prctical applications, a system for automatic weed sampling was developed. The system uses bispectral images, which are processed to derive shape features of the plants. The shape features are used for the discrimination of weed and crop species by using a...

The most widely used method for weed control is to use agricultural chemicals (herbicides products). This heavy reliance on chemicals raises many environmental and economic concerns, causing many plantation companies to seek alternatives for weed control in order to reduce chemical usage in their plantation. Since manual labor is costly and expensive, an automated weed control system may be eco...

• Solarization Stapleton, J. J., Molinar, R. H., Lynn-Patterson, K., McFeeters, S. K., and Shrestha, A. 2005. Methyl bromide alternatives. Soil solarization provides weed control for limited-resource and organic growers in warmer climates. California Agriculture 59 (2):84-89. PDF Abstract: This paper describes the use of soil solarization technology for weed management, as conducted by the Univ...

Red rice is a troublesome weed in rice-growing areas of the southern U.S. Red rice in Arkansas may be diverse enough to warrant some adjustments in weed control programs. A study was conducted at the Rice Research and Extension Center (RREC), Stuttgart, Ark., in 2003 to determine the phenotypic diversity of red rice in Arkansas. One hundred thirty-six red rice accessions were collected from 26 ...

Contrasting the two green strength genes of soil, wheat, corn, and the weed, the paper designed a system to identify the weed from the crop. It used the 2GR-B and BP neural network, with the help of pixel-position-histogram diagram, to calculate the area and position of weeds. The result showed that it could identify the weed from the field and crop with an accuracy of 93%. The program gave the...

1928-1976 D R. ROBERT INSLEE WEED, Professor of Medicine and of Radiation Biology and Biophysics, and Chief of the Hematology Unit in the Department of Medicine at the University of Rochester, died August 18, 1976. Dr. Weed obtained his baccalaureate in 1949 and his medical degree in 1952 from Yale University. He interned in Medicine at Strong Memorial Hospital of the University of Rochester. T...