These are the requirement of agric colleges
Diploma in General Agriculture
Three (3 ) years for SSSCE/ WASSCE students. Applicants must have aggregate 24 or better in the core subjects (English,Mathematics,Integrated Science) and any other three(3) Elective (Physics,Chemistry,Biology,General Agriculture,Fisheries,Animal Husbandry,Horticulture, etc) subjects.WAASSCE applicants must have credit in the Core subjects and at least C6 in any three (3) of the a fore-named Elective subjects.
As you can see, they are looking for at least c6 in maths, english and science. But you can always apply to see because grades are not the only factors for getting admission