کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10395823 889077 2005 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Revisiting the agronomic benefits of manure: a correct assessment and exploitation of its fertilizer value spares the environment
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Revisiting the agronomic benefits of manure: a correct assessment and exploitation of its fertilizer value spares the environment
چکیده انگلیسی
The ongoing disintegration of agriculture into specialized farms, specialized regions and even specialized countries, has disrupted local nutrient cycles. This process is promoted and sustained by the use of mineral fertilizers. Ample availability of mineral fertilizers has changed farmers' perception and appreciation of manure. By now, manure is looked upon as `waste' in some regions. It is a contradiction in terms, however, to regard biological by-products as `waste'. Apart from this cultural aspect, economical and environmental considerations per se, justify a rehabilitation of manure. First of all a correct assessment of the fertilizer value is required. The present paper explaines how to determine the nitrogen fertilizer value (NFV) of manures in a unbiassed manner. Subsequently, recommendations are made on how to exploit the potential NFV as good as possible. Undeniably, it is easier to manage mineral fertilizers than manure. However, when proper attention is given to the composition of manure and decisions on rates, timing and placement are made correspondingly, the NFV can be enhanced. This should lead to a drastic reduction of mineral fertilizer use, nutrient surpluses and environmental pollution. Under such conditions, `manure', `precision farming' and `environment' can become reconciled again.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 96, Issue 2, January 2005, Pages 253-261
نویسندگان
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