Bsc Agriculture hons is more of a degree course and admissions can be based on merit or on entrance test whereas the management course is more of a professional course and there is an entrance for this course

If you want to opt for one the scope and intensity is more in Bsc management course in agriculture. Though the difference is not major. Most of the curriculum will be same but the degree of bsc agri. management will be more useful in theory as well as  the practical part.

B .Sc (Hons )covers some portions of M .Sc also ,so it is more difficult .But if you for M .Sc you will get preference ,they will give extra grace marks .If you for govt job ,difference is only in spelling ,both are just degrees .For same effort in Hons you will get less marks .Many universities have stopped Hons courses.