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THE MECHANISM OF ACTION OF FLUAZIFOP-BUTYL, HALOXYFOP-METHYL, AND SETHOXYDIM HERBICIDES ON WHEAT (TRITICUM AESTIVUM L.) SEEDLINGS (CHLOROPLAST DEVELOPMENT).SATTI, MOHAMED AHMED EISA. January 1985 (has links)
Haloxyfop-methyl 2-[4-[ [3-chloro-5-(trifluoromethyl)-2-pyridinyl] oxy] phenoxy] propanoate, fluazifop-butyl (±)-2-[4-[ [5-(trifluoromethyl)-2-pyridinyl] oxy] phenoxy] propanoate, and sethoxydim 2- [1-(ethoxyimino)butyl]-5- [2-(ethylthio)propyl] -3-hydroxy-2-cyclohexen-1-one modified chloroplast pigment, growth, anatomy, and ultrastructure of pre- and postemergent-treated wheat (Triticum aestivum 'Pavon 76') seedlings. Seedlings were grown under 16 h photoperiod (105 μE/M²/S) at 32/24 C day/night temperature. Pigment, growth and anatomical studies were made on pre- and postemergent-treated seedlings. Postemergent treatments were applied to 6-day-old seedlings. Carotenoid levels were reduced by 90 to 94% in preemergent-treated seedlings at 5 x 10⁻⁵ M for each herbicide. Postemergent application of 10⁻³ M haloxyfop-methyl and sethoxydim caused a reduction of 11 and 15% in carotenoid concentration than the control, respectively. Also, they produced a significant reduction in chlorophyll a and total chlorophyll concentration. Preemergent treatment with 5 x 10⁻⁶ M of each herbicide caused a reduction of 78 to 91% in leaf fresh weight and 72 to 84% reduction in root dry weight as compared to the control. Height of the seedlings was reduced by 79 to 86% of the control. Postemergent treatments with 10⁻³ M of each herbicide reduced the length of the second leaf by 98%, whereas length of the first leaf was reduced by 36% following haloxyfop-methyl treatment and 45% following fluazifop-butyl or sethoxydim treatments. Fresh weight of leaf tissue treated with 10⁻³ M of each herbicide was reduced by 40%. Preemergent treatment of the seedlings with 3 x 10⁻⁶ and 5 x 10⁻⁶ M haloxyfop-methyl or with 5 x 10⁻⁶ M fluazifop-butyl or sethoxydim caused 35 to 50% enlargement of mesophyll cells as compared to the control. These cells appeared to contain less cytoplasm. Post- emergent application of 10⁻³ M of each herbicide caused swelling of mesophyll cells. Ultrastructural studies showed that plastids of seedlings germinated in 5 x 10⁻⁶ M of each herbicide were disrupted, swollen, and lacked internal thylakoids but contained masses of plastoglobuli. The chloroplasts of postemergent-treated seedlings had fewer granal and intergranal thylakoids, but the injury to plastids was less severe than in preemergent treatments.
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Efficacy of α-(Cyanomethoximino)-Benzacetonitrile (CGA-43089) as an antidote for Acetamide herbicides in grain sorghum (Sorghum bicolor (L.) Moench) and environmental factors affecting CGA-43089 activitySimkins, George Stanley January 2011 (has links)
Digitized by Kansas Correctional Industries
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The Use of 2, 4-D on Crops in ArizonaHamilton, K. C., Arle, H. F., Dennis, R. E., McRae, G. N., Ray, H. E. 08 1900 (has links)
This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project.
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The effects of soil applications of trifluralin on cotton seedlingsVannoorbeeck, Luc Robert, 1935- January 1965 (has links)
No description available.
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The effects of several herbicides on creosotebush in relation to carbohydrate and moisture levelsBartlett, Ellsworth Thomas, 1943- January 1967 (has links)
No description available.
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Persistence of seven dinitroanilines under irrigated and fallow conditionsGagnon, Siegfried Andre, 1949- January 1973 (has links)
No description available.
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DIFFERENTIAL SENSITIVITIES OF TRANSPLANTED TOMATO CULTIVARS TO 2,6-DINITROANILINE HERBICIDES.Wilen, Cheryl Ann. January 1983 (has links)
No description available.
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Chemical control of henbit and chickweed in Kentucky Bluegrass turfMurnighan, John J. January 1960 (has links)
Call number: LD2668 .T4 1960 M67
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Soil residue effects of selected pre-emergence herbicides as measured by the growth of Kanota oatsLong, Robert Charles. January 1961 (has links)
Call number: LD2668 .T4 1961 L65
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Some effects of pre-emergence herbicides on asparagus growth, weed growth, and residual effects on oat and soybean plantsSandhu, Sarbjit Singh. January 1965 (has links)
Call number: LD2668 .T4 1965 S217 / Master of Science
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