tailieunhanh - WHY ORGANIC MANURES ARE BETTER THAN CHEMICAL

The toxicity or carcinogenicity of each reagent used in this method has not been precisely defined; however, each chemical compound should be treated as a potential health hazard. From this viewpoint, exposure to these chemicals must be reduced to the lowest possible level by whatever means available. The laboratory is responsible for maintaining a current awareness file of OSHA regulations regarding the safe handling of the chemicals specified in this method. A reference file of material data handling sheets should also be made available to all personnel involved in the chemical analysis. Additional references to laboratory safety are available and have been identified. | WHY ORGANIC MANURES ARE BETTER THAN CHEMICAL FERTILIZERS. By J. I. Rodale Emmaus Pennsylvania. Communicated by Prof. N. R. Dhar . . The purpose of this statement is to present data to show that there is a need for a scientific re-evaluation of the use of Chemical fertilizers and poisonous insecticides in our agriculture. In my opinion sufficient scientific data already exists to show that the extended organic method is far superior to the present general practice with respect to fertilizer usage from not only the human health standpoint but from the point of view of preventing soil erosion and giving higher yields at a lower cost. History of the Organic Method. There is a tendency to say that the organic method is as old as history and was practised by the oldest civilizations. This is not true as evidenced by the downfall of those civilizations. It is possible that with the practice of the extended organic method on a widespread scale in any civilization that civilization will be able to persevere indefinitely and not go the way of Babylonia and Rome. These old civilizations countenanced the burning of manure as a fuel and stood idly by while the most rudimentary principles of basic agriculture were violated. The world has never seen except in a few isolated cases the practice of a thorough organic method and with such a practice there is hope of building a civilization such as has never before been seen for not only does physical health come from our food through the fertility of the soil in which it grows but also our minds and characters are nourished and nurtured through that very soil. The people can only be a reflection of the soil which they culture. Poor soil poor people. Mediocre soil mediocre mentality of the people. Science can quickly prove this. The founder of the organic farming movement is Sừ Albert Howard who in 1940 wrote An Agricultural Testament which was published by the Oxford University Press and has since gone into many printings. This