. . . Happy New Decade . . .

Try searching for Sir Bob Geldof ; on the Internet.

. . . ( Yes : The Former Boomtown Rat ! ) . . .

Apparently : His Ethical Investment Vehicle is currently dishing out (Hundreds of) Millions of Dollars ; to Sustainable African Enterprises.

Whatever the Case : Please Always Remember to (Regularly) Send Me My (Big Fat) Future Dividend Cheques ; most preferably via DHL !

Sincerely,

Professor Obi

Enroll or connect your social enterprise with the local government so that people know it as a authorized body. Meet with the local government officials and explain them about your cause and how it is and will help the society. Show your work done and the future ideas and plans. Once the local government starts supporting your project spread your voice to the entire African continent and subsequently to the entire world. If possible get a website created for your social enterprise so that the world sees it.
If it's for a good cause people across the world will definitely lend their helping hand.

A couple of things to think about

1) you will have to do some reach into various types of non-dilutive funding. Grants, per say, should be part of the solution, but not the only solution. I would be looking into start-up competitions and corporate sponsorship

2) I would start researching into grant funding through various governments that are willing to fund in your area

3) I would also start looking at various agricultural companies (equipment or chemical), an that are well known in the industry (Ag-Chem Equipment, Alexander & Baldwin, Alico (company), Allen Family Foods, American Tractor Corporation, etc.) to name a few. These companies may having funding in various formats.

You might be better served to pursue traditional financing mechanisms for a for-profit businesses (debt and equity). Assuming you mean tapping grants from US-based foundations, that can be a challenge even for a US-based for-profit business; however, foundations do occasionally offer PRIs (program related investments), which are essentially loans that can be converted to grants if they are not repaid.