Translate your documents, single words or a web-page at this link. CAUTION: Translations will not always be perfect. The better your Spanish is, the more you can control the quality of the translations. 

http://babel.altavista.com/

 

Translator for technical words that are agriculture specific is available at this link. Words you won't find in general English/Spanish dictionaries, like "Mites", "Adjuvants", "oscillating boom sprayer", and etc. Be sure to surf this site well as there is a lot of other great and useful information. http://danr.ucop.edu/ag-labor/   

 

Pesticide applicator training manuals in Spanish are available at this link. Illinois is the only state I know of that has a pesticide applicators training manual in Spanish. The tests are offered only in English though. Oklahoma offers the test in Spanish but has no training manuals! 

http://www.pesticidesafety.uiuc.edu/publications/publications.htm