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Pesticides. Although all the pesticides and active ingredients that are registered have their negative effects on our environment, Scientifics are trying to develop new pesticides using natural resources;

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Introduction

Searching for a New Weapon Nowadays, Scientifics search and try of developing new methods to be implemented in the Agriculture; also, they are looking for how to improve the products that already exist to get better result obtaining less negative effects. This is the case of pesticides that are used to kill insects and little animals that destroy farms. Due to these problems called "pestes", many farmers have had millionare losses every year so, the use of pesticides on farms decrease the number of pestes and parasites that attack the harvests. However, the feedback for the use of pesticides is that they provoke several environmental bad consequences and also consequences in our health. The U.S. Environmental Protection Agency (EPA) has regulated about 891 physiologically active ingredients and manufactured in quantity. For example, these are four of the most heavily applied pesticides: Atrazine (H) �, metolachlor, metam sodium (F, H, I, N, SFm), and methyl bromide (Fm). ...read more.

Middle

Water: slightly soluble. "Nonflammable". * Carbofuron: Class of chemical: carbamate Chief pesticide use and status: insecticide, nematocide, acaricide Persistence: non - persistence to low - persistence Immediate toxicity (acuate): oral - high to very high, dermal - ? , inhalation - ? Long term toxicity (chromic): suspect mutagen Adverse effect on other non - targeted species, physical properties: immediate toxicity - birds (very high), fish (very high), crustaceans (low), bees (low to medium). Water: soluble. Slightly volatile. * Chlorimuran: Class of chemical: urea Chief pesticide use and status: herbicide Persistence: non - persistence Immediate toxicity (acuate): oral - medium, dermal - ?, inhalation - low to medium. Long term toxicity (chromic): Adverse effect on other non - targeted species, physical properties: immediate toxicity - birds (low to medium), fish (low), crustaceans (low). Water: slightly soluble. "Nonflammable". * Copper sulfate: Class of chemical: inorganic Chief pesticide use and status: fungicide, herbicide, algacide Persistence: Immediate toxicity (acuate): oral - medium to high, dermal - low to medium, inhalation - low to high. ...read more.

Conclusion

Although all the pesticides and active ingredients that are registered have their negative effects on our environment, Scientifics are trying to develop new pesticides using natural resources; for example, the use of Zuccagnia puncata. Using its properties as a pesticide acting again Soybean Infecting Fungi. This is not the end of the develop of new pesticides because we want to get the best effects without hurting our environment and our health. Reference George F. Ludvik, Robert W. Risebrough Pesticide. Pub. Date or year of update: July 12, 2002. Pages or article: tow pages. Encyclopedia database. Accessscience@McGraw.Hill http://www.accessscience.com June 01, 2004 George W. Ware Insecticides. Pesticide Book. 5th edition. Thompson publisher. Pub. Date or year of update: The Pesticide Book (1989) and Pesticide theory and application (1983). Laura Svetaz, Alejandro Tapia, Silvia N. Lopez, Ricardo L. E. Furlan, Elisa Petanatti, Rosanna Pioli, Guillermo Schemeda-Hirschmann, and Susana A. Zacchino. Antifungal Chalcones and New Caffeic Acid Esters frm Zuccagnia punctata Acting against Soybean Infectiong Fungi. Journal of Agricultural and Food Chemistry. Pages of article: 4 pages. Year published: April 28, 2004. http://library.austincc.edu http://pubs.acs.org Date accessed: June 01, 2004 ...read more.

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