Robinson, Raoul A. Primary Author mixed material bibliography kanada Pandora Press, Kitchener, 2007 en English

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To anyone who is concerned about the environment, i t is obvious that all is not well with modern crop husbandry. One problem is tha t pests and diseases are destroying about one fifth of all crop production. A second pr oblem is that these losses occur in spite of an extravagant use of chemical insecticides and fungicides that cost billions of dollars each year, worldwide. Indeed, in the industrial cou ntries, the use of some kinds of crop protection chemicals has increased nearly tenfold s ince World War II. Crop production has increased also, very considerably, but so have the crop losses due to parasites, in spite of this increased use of crop protection chemicals. And these chemicals are also hazardous. This kind of parasite damage obviously does not occ ur in wild ecosystems. After all, we do not spray wild plants, and the world is still green. So why should such appalling pest and disease losses occur in agro-eco systems, in spite of all this spraying with crop protection chemicals? This book is addressed mainly to readers who are co ncerned about the world food supply, and the pollution of our food and our envir onment with chemical pesticides, but who lack detailed scientific knowledge about these matters. It is also addressed to people who are not scientists, but who are prepared to mak e an effort to study a new subject that is outside their own fields of expertise. It presen ts a somewhat complicated and technical topic, but it is written in plain English which, I believe, will be readily comprehensible to anyone who is reasonably willing to persevere. I al so believe that readers who do persevere will be excited by their new knowledge, a nd will feel amply rewarded for their trouble. The book is also addressed to activists wh o want to put things right, and it explains a possible way of doing this EBOOK breeding corp NONE 9780978363437 e-BOOK UPT Perpustakaan Instiper Yogyakarta images.jpg.jpg 104 2018-08-07 09:47:50 2018-09-19 09:28:47 machine generated