منابع مشابه
The Phosphorus Fertility Status of New York Agricultural Land
In New York State (NYS), an estimated 7.6 million acres equaling 25% of the total land area in the state were in agricultural production in 2002. For the long-term sustainability of NYS agriculture, it is important to maintain and increase farm profitability while protecting the environment. To evaluate crop fertilizer and manure management monitoring of soil test phosphorus (P) levels is impor...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1888
ISSN: 0028-0836,1476-4687
DOI: 10.1038/037524a0