Results 211 to 220 of about 21,416 (257)

Herbicides from Natural Compounds

Weed Technology, 1987
Phytotoxic compounds from plants and microorganisms represent a wide range of chemistries and mechanisms of action that have potential in the design and development of new herbicides. Although several natural products of higher plants have been patented as herbicides, none have been developed commercially.
Stephen O. Duke, John Lydon
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Herbicidal Activity and KAPAS Inhibition of Juglone with Potential as Natural Herbicide

Korean Journal of Weed Science, 2011
The potential of juglone a plant naphthoquinone as a natural herbicide on new target, 7-keto-8-amino pelargonic acid synthetase (KAPAS) in the early step of biotin biosynthesis pathway, was performed in vitro and in vivo. Juglone effectively inhibited KAPAS activities in vitro and the was .
Jung-Sup Choi, Hee-Kyung Lim, Bo-Ram Seo, Jin-Seog Kim, Chun-Whan Choi, Young-Sup Kim, Shi-Yong Ryu   +6 more
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Natural and Synthetic Podolactones with Potential Use as Natural Herbicide Models

Journal of Agricultural and Food Chemistry, 2000
A collection of 11 natural and synthetic podolactones have been tested as allelochemicals in a range between 10(-4) and 10(-9) M, and their potential use as natural herbicide models is discussed. Their effects on the germination and growth of the dicots Lactuca sativa (cv. Nigra and cv.
F A, Macías, A M, Simonet, P C, Pacheco, A F, Barrero, E, Cabrera, D, Jiménez-González   +5 more
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Ecotoxicological effects of conventional herbicides and a natural herbicide on freshwater fish (Danio rerio)

Journal of Environmental Science and Health, Part B, 2022
The contamination of aquatic environments has increased over time, affecting environmental integrity and human health. Herbicides represent a source of this contamination, and among the most commercialized are the triazines and glyphosate. In contrast, there are natural herbicides, which are less harmful to the environment. The aim of this study was to
Larissa Lechinovski, Mayomie Bados, Jonathan Rosa, Deise Borchhardt Moda, Ana Carolina de Deus Bueno Krawczyk   +4 more
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Rationale for a natural products approach to herbicide discovery

Pest Management Science, 2012
Abstract Weeds continue to evolve resistance to all the known modes of herbicidal action, but no herbicide with a new target site has been commercialized in nearly 20 years. The so‐called ‘new chemistries’ are simply molecules belonging to new chemical classes that have the same mechanisms of action as older herbicides (e.g.
Franck E, Dayan, Daniel K, Owens, Stephen O, Duke   +2 more
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Degradation and Transformation of a Potential Natural Herbicide in Three Soils

Journal of Agricultural and Food Chemistry, 1999
The methyl ester of fusaric acid (ME) is one of four toxins produced by the fungus Fusarium nygamai, which could be used as a natural herbicide against Striga hermonthica, a parasitic weed of sorghum and corn in a vast zone of West and Central Africa.
Vischetti C, Esposito A
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Natural tolerance of cyanobacteria to the herbicide glyphosate

New Phytologist, 1991
summary Synechocystis PCC 6803 and Anabaena variabilis ATCC 29413 showed a high degree of tolerance to the herbicide glyphosate, applied as the free acid, the monoisopropylamine salt or the commercial formulation (Roundup > R). Differential toxicity between herbicide formulations was observed (Roundup > isopropylamine salt > free acid) and ...
H. A. POWELL, N. W. KERBBY, P. ROWELL
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Mobility of herbicides in natural soil columns

Communications in Soil Science and Plant Analysis, 1994
Abstract A description is offered of the equipment needed to determine herbicide mobility in natural soil columns. The devices were developed to extract intact soil cores from the field and to remove the soil cores from the stainless steel tubes. The method was applied to the mobility of metamitron in two soils.
L. F. Lorenzo‐Martin, M. Arienzo, M. Sanchez‐Camazano   +2 more
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Optimization of Benzoxazinones as Natural Herbicide Models by Lipophilicity Enhancement

Journal of Agricultural and Food Chemistry, 2006
Benzoxazinones are plant allelochemicals well-known for their phytotoxic activity and for taking part in the defense strategies of Gramineae, Ranunculaceae, and Scrophulariceae plants. These properties, in addition to the recently optimized methodologies for their large-scale isolation and synthesis, have made some derivatives of natural products, 2,4 ...
Francisco A, Macías, David, Marín, Alberto, Oliveros-Bastidas, José M G, Molinillo   +3 more
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Photodegradation of Triazine Herbicides in Aqueous Solutions and Natural Waters

Journal of Agricultural and Food Chemistry, 2002
The photodegradation of three triazines, atrazine, simazine, and prometryn, in aqueous solutions and natural waters using UV radiation (lambda > 290 nm) has been studied. Experimental results showed that the dark reactions were negligible. The rate of photodecomposition in aqueous solutions depends on the nature of the triazines and follows first-order
E, Evgenidou, K, Fytianos
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