Effect of 2,4-Dichlorophenoxyacetic Acid on the Water Relations, the Accumulation and Distribution of Solid Matter, and the Respiration of Bean Plants

1946 ◽  
Vol 107 (3) ◽  
pp. 332-343 ◽  
Author(s):  
James W. Brown
Keyword(s):  
Water Relations ◽  
Dichlorophenoxyacetic Acid ◽  
Solid Matter ◽  
Bean Plants ◽  
2,4 Dichlorophenoxyacetic Acid

Metabolism of 2,4-dichlorophenoxyacetic acid. II. Metabolism of the side chain by bean plants

1952 ◽  
Vol 40 (2) ◽  
pp. 277-285 ◽  
Author(s):  
Robert L. Weintraub ◽  
John N. Yeatman ◽  
James A. Lockhart ◽  
Justin H. Reinhart ◽  
Melvin Fields
Keyword(s):  
Side Chain ◽  
Dichlorophenoxyacetic Acid ◽  
Bean Plants ◽  
2,4 Dichlorophenoxyacetic Acid

scholarly journals Effect of Pesticide-treated Grass Clippings Used as a Mulch on Ornamental Plants

HortScience ◽  
1997 ◽  
Vol 32 (7) ◽  
pp. 1216-1219 ◽  
Author(s):  
B.E. Branham ◽  
D.W. Lickfeldt
Keyword(s):  
Plant Growth ◽  
Ornamental Plants ◽  
Climatic Conditions ◽  
Alternative Methods ◽  
Dichlorophenoxyacetic Acid ◽  
Yard Waste ◽  
Growing Seasons ◽  
Pesticide Treatment ◽  
Bean Plants ◽  
2,4 Dichlorophenoxyacetic Acid

With increasing pressure to reduce disposal of yard waste in landfills, many homeowners are seeking alternative methods for grass clipping disposal. When turf is treated with pesticides, the collected grass clippings become a potential source of injury to susceptible plants that come in contact with the clippings. In this study, grass clippings were collected at 2, 7, and 14 days after pesticide treatment from a turf treated with chlorpyrifos, clopyralid, 2,4-D, flurprimidol, isoxaben, or triclopyr. The clippings were used as a mulch around Lycopersicon esculentum Mill. (tomato), Phaseolus vulgaris L. (bush bean), Petunia ×hybrida Hort. Vilm.-Andr. (petunia), and Impatiens wallerana Hook. f. (impatiens). Beans were planted 4 weeks prior to mulching, whereas the other plants were grown in the greenhouse for 6 weeks and transplanted into the field 2 weeks prior to mulching. Clippings containing residues of clopyralid, 2,4-D, or triclopyr killed tomato, bean, and petunia plants when used 2 days after pesticide treatment (DAPT) and severely injured these same species when mulched 7 and 14 DAPT. Flurprimidol injured tomato, impatiens, and bean plants when present on mulch collected 2, 7, and 14 DAPT, but was not lethal. Flurprimidol slowed plant growth, caused darker green leaf color, and reduced flowering when mulched at 2 DAPT. Isoxaben injured tomato and bean plants when present on mulch used 2, 7, and 14 DAPT but was not lethal. Injury was not as severe in the second year of the study, indicating different environmental stresses and climatic conditions make predicting pesticide injury for all growing seasons difficult; however, grass clippings from a turf treated with herbicides or plant growth regulators should not be used for mulch around sensitive plants for at least 14 DAPT. Chemical names used: 0,0-diethyl O-(3,5,6-trichloro-2-pyridinyl) phosphorothioate (chlorpyrifos); 3,6-dichloro-2-pyridinecarboxylic acid, triethylamine salt (clopyralid); 2,4-dichlorophenoxyacetic acid, dimethylamine salt (2,4-D); α-(1-methylethyl)-α-[4-(trifluromethoxy)phenyl]-5-pyrimidinemethanol (flurprimidol); N-[3-(1-ethyl-1-methylpropyl)-5-isoxazolyl]-2,6-dimethoxybenzamide and isomers (isoxaben); 3,5,6-trichloro-2-pyridinyloxy acetic acid, triethylamine salt (triclopyr).

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