This book is focusing on the best management practices which including the developing and operating the chemical and manure fertilizing machines to avoid the problems that arise during the use of these machines such as; the environmental contamination by the excessive application of fertilizers, non- uniformity of fertilizers distribution in the field and lower field capacity, especially for manuring machines. So, this work is considering a supply of information for developing, improving and upgrading the performance of both, the chemical fertilizers broadcaster and manure fertilizing machine.