Bloomsbury Publishing 
Dictionary of Agriculture [PDF ebook] 

Containing over 7, 000 entries, this fully revised edition provides clear, up-to-date and comprehensive coverage of agricultural terms. Subjects covered include cultivation, machinery, livestock, crops, pesticides and herbicides, fertilizers, organic farming and veterinary science, as well as sales and commodities markets.Jargon-free definitions make this dictionary particularly suitable for students, new industry recruits and non-native English speakers.