Enhanced Herbicide Biodegradation in South Carolina Soils Previously Treated with Butylate
Enhanced Herbicide Biodegradation in South Carolina Soils Previously Treated with Butylate
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先前用丁酸盐处理的南卡罗来纳州土壤中除草剂的生物降解能力增强
DOI：
10.1017/s0043174500067424
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发表时间：
1986
期刊：
影响因子：
2.5
通讯作者：
M. Amakiri
中科院分区：
文献类型：
--
作者：
H. Skipper;E. Murdock;D. Gooden;J. Zublena;M. Amakiri
进行实验以研究硫代氨基甲酸酯的增强生物降解，并评估微生物抑制剂对在前几年接受过丁酸盐处理的土壤（丁酸盐历史土壤）中的丁酸盐[S-乙基双（2-甲基丙基）硫代氨基甲酸酯]、EPTC（S-乙基二丙基硫代氨基甲酸酯）和弗诺酸盐（S-丙基二丙基硫代氨基甲酸酯）的效力的影响。所用的抑制剂是fonofos（O-乙基-S-苯基醚二硫代磷酸酯）和R-33865（O，O-二乙基-O-苯基硫代磷酸酯）。R-33865和氟虫硫磷显著提高了马唐[Digitaria sanguensis（L.）斯科普# DIGSA]与丁酸酯和EPTC在玉米（Zea mays L. 'Coker 21'）。生物测定数据反映了更多的残留植物毒性丁酯和EPTC时，这些除草剂与微生物抑制剂组合。在种植大豆[Glycine max（L.）Merr.“Wright”]，R-33865未改善Vernolate的疗效。这些结果表明，一些交叉适应的丁酸盐适应微生物的EPTC，但没有交叉适应检测到的春酸盐。在实验室条件下，14 C-丁酸酯降解更迅速地在丁酸酯的历史土壤比非丁酸酯的历史土壤中的14 CO2。
Experiments were conducted to investigate enhanced biodegradation of carbamothioates and to evaluate the effect of microbial inhibitors on the efficacy of butylate [S-ethyl bis(2-methylpropyl)carbamothioate], EPTC (S-ethyl dipropylcarbamothioate), and vernolate (S-propyl dipropylcarbamothioate) in soils that had received butylate treatment in previous years (butylate-history soils). Inhibitors used were fonofos (O-ethyl-S-phenylether phosphonodithioate) and R-33865 (O,O-diethyl-O-phenylphosphorothioate). R-33865 and fonofos significantly improved control of large crabgrass [Digitaria sanguinalis (L.) Scop. # DIGSA] with butylate and EPTC in corn (Zea mays L. ‘Coker 21’). Bioassay data reflected more residual phytotoxicity from butylate and EPTC when these herbicides were combined with the microbial inhibitors. In butylate-history soils planted to soybeans [Glycine max (L.) Merr. ‘Wright’], R-33865 did not improve the efficacy of vernolate. These results indicated some cross-adaptation of the butylate-adapted microorganisms for EPTC, but no cross-adaptation was detected for vernolate. Under laboratory conditions, 14C-butylate was degraded more rapidly to 14CO2 in butylate-history soils than in non-butylate-history soils.