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Rice (Oryza sativa L.) response to clomazone as influenced by rate, soil type, and planting date [electronic resource] /

by O'Barr, John Houston

Abstract (Summary)
Clomazone is an effective herbicide widely used for preemergence grass control in rice. However, use of clomazone on sandy textured soils of the western Texas rice belt may cause serious rice injury. When labeled for rice in 2001, sandy textured soils were excluded. Laboratory experiments were conducted to determine the effect of soil characteristics and water potential on plant-available clomazone and rice injury. A centrifugal double-tube technique was used to determine plant-available concentration in soil solution (ACSS), total amount available in soil solution (TASS), and K[subscript]d values for clomazone on four soils at four water potentials. A rice bioassay was conducted parallel to the plant-available study to correlate biological availability to ACSS, TASS, and K[subscript]d. TASS was significantly different in all soils at the 1% level of significance. The order of increasing TASS for the soils studied was MoreyBibliographical Information:

Advisor:

School:Texas A&M International University

School Location:USA - Texas

Source Type:Master's Thesis

Keywords:major agronomy soil texture injury

ISBN:

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