منابع برچسب گذاشته شده توسط: Protection Of Plants
3 items found (Showing 1 - 3)
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Tells how to control birds, rodents, wild animals, dogs, cats, and insects without using chemicals.
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1977/01/01 The book explains a step-by-step approach, starting with preventive measures and working up to the more powerful remedies; from soil health, resistant varieties and companion planting, to traps, repellents and bug poisons.
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The authors and editors of this series believe that the new approach taken in organizing subject matter and relating it to current discoveries and new principles will stimulate the interest of students. A single book cannot fulfill the different and changing requirements that must be met in...