Full TGIF Record # 14267
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Sathasivan, K.; Kitchen, L. M.
Author Affiliation:Louisiana State University
Title:Uptake and Translocation of 14-C Asulam in Three Grass Species.
Source:Southern Weed Science Society Proceedings. Vol. 40, January 1987, p. 336.
Publishing Information:Nashville, TN: Southern Weed Science Society.
Keywords:TIC Keywords: Uptake; Translocation; Asulam; Digitaria sanguinalis; Rottboellia exaltata; Sorghum halepense
Abstract/Contents:"The influence of site of application on the uptake and translocation of 14-C asulam was studied in greenhouse experiments on large crabgrass (Digitaria sanguinalis), itchgrass (Rottboellia exaltata) and johnsongrass (Sorghum halepense). The radioactive asulam was applied on the upper and lower surfaced of first, second, third and fourth leaves. The treatments were also applied on the first and second whorls. Asulam was applied at 3.36 kg at the four matured leaf stage with 0.5% X-77 surfactant in 350 1 ha-1 spray solution. Five microliters of the radioactive asulam was applied on 1 cm2 in leaves and inside whorls. The plants were harvested 24 hours after treatments and the treated area was washed in 15 ml of the spray solution. The plant samples were lyophilized, weighed, and the radioactivity assayed. The total uptake of 14-C asulam decreased as the leaf age increased in itchgrass and johnsongrass. Application to the lower surface resulted in higher uptake compared to application to the upper leaf surface in large crabgrass and itchgrass, while the contrast was observed in johnsongrass. Application inside the first whorl resulted in greater uptake than application to the lower whorl. The sites of application did not generally influence the acropetal or basipetal translocation. However, the application on lower leaves resulted in greater retention of 14-C asulam in the treated area."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sathasivan, K., and L. M. Kitchen. 1987. Uptake and Translocation of 14-C Asulam in Three Grass Species.. South. Weed Sci. Soc. Proc. 40:p. 336.
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