http://psep.cce.cornell.edu/facts-slides-self/facts/nit-el-grw89.aspx
It discusses the importance of nitrogen as a fertilizer, its presence in plants, soil, and groundwater, and its fate in the field. It presents some measures to avoid polluting groundwater when fertilizing nonlegume crops, and some suggestions for further reading.
Autor(es): Trautmann, Nancy M., Porter, Keith S., Wagenet, Robert J. Originador(es): Cornell University. Pesticide Management Education Program - PMEP. Pesticide Safety Education Program - PSEP
Recurso adicionado em:
27/07/1999
Idiomas disponíveis:
Inglês