Weed control development

Proper understanding of allelopathic crop and weed plants including their growth stages at which toxin production occurs and characterization of allelopathic agents frcm these plants provide new avenues for developing technologies in weed control, crop efficiency, pest control and plant diseases. 

Weeds constitute one of the major problems in agriculture. They are an important constraint on yield in most crops across the world. These days, growers spend much money on weed control. About 6 million ton of herbicides was sold in the world in 2006 and herbicides are the most used pesticides they form approximately 38% of the total amount of pesticides (FAO 2006). Nowadays, an effort to tighten rules for authorization and application of pesticides, research and develop products that are target-specific, degrade quickly and do not accumulate in the food chain, exists in... 

These days, allelopathic plants as catch crops or trap crops found utilization in plant protection of tropical regions against parasitic weeds. They do not eliminate the parasite completely but decrease the seed bank in the soil. Other applications of allelopathy for weed control include the use of plant residues as a natural herbicide agent, e.g., water extracts, pellets, flours, by-products of crop processing, etc. The strategies for use of volatile compounds as soil fumigants are developed. 

Products of the petroleum industry have been used in agriculture for the control of pests practically since the initial recovery of oil from the earth. The early uses were as dormant sprays for deciduous fruit trees and for weed control. The development and expansion of petroleum products and petroleum chemicals in agricultural pest control fields have closely paralleled the technological development of the petroleum industry. 

The new and highly specialized petroleum products used as weed killers represent an application to agriculture of products developed by modem petroleum technology. Their increased usage is certain as these herbicides replace more costly means for weed control, in some cases reducing the cost to about one third that of previously known methods. 

Padgette, S. R., Re, D. B., Barry, G. F. el al. (1994). New weed control opportunities development of soybeans with a Roundup Ready gene. In Herbicide-resistant Crops Agricultural, Economics, Environmental, Regulatory, and Technologycal Aspects, ed. S. O. Duke. Boca Raton, FL CRC Press. 

Melander, B. and Heisel, T. 2002. Prospects and limitations for agricultural engineering in the development of sustainable weed control methods - examples from European research. Paper presented at Australian Conference on Agricultural Engineering. Charles Sturt University, Wagga Wagga. 

The Triazine Herbicides A Milestone in the Development of Weed Control Technology... 

This book is about the revolutionary impact of the triazines herbicides, likely the most important class of agricultural chemicals ever developed. For five decades the triazines have provided weed control in more than 50 crops around the world and have helped farmers boost yields and produce enough food to feed a rising global population. The triazine herbicides, and especially atrazine, are the most well-researched herbicides in history, with thousands of scientific studies on their safety to humans and the environment. Data from studies on the triazines have been evaluated extensively by regulatory authorities around the globe to ensure their safe use. 

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