Description:... This book has been produced for use by agricultural consultants, farmers and their agents, and other organisations concerned with developing and maintaining a sustainable agricultural industry. It describes the principles of crop nutrition and gives recommendations for the use of lime, fertilisers and organic manures for field crops and grassland grown in England and Wales. The main purpose of the book is to provide recommendations for the optimum rate and timing of fertilisers but information is also given on a range of related topics such as soil sampling methods and fertiliser application. The primary aim of the recommendations is to maximise the economic returns for farmers. Adoption of the recommendations will also reduce the risk of applying more fertiliser nutrients than the crop needs and will thereby minimise the risk of causing nutrient pollution of the environment. The recommendations are not designed for use in organic farming systems. A summary of the main changes from the previous edition is given.
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شماره کارت : 6104337650971516 شماره حساب : 8228146163 شناسه شبا (انتقال پایا) : IR410120020000008228146163 بانک ملت به نام مهدی تاج دینی