Fertilizer use by crop. 

 - Rome :  FAO of the United Nations,  2006. 
 - xii, 108 p. ;  25 cm. 
 - FAO fertilizer and plant nutrition bulletin ;  17 .
<br/><br/><label>ISBN: </label>9789251055922 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilization of plants.<br/>Crops and soils.