You have not established that issues with agriculture in LDCs is due primarily to production.
You have not established that the issues with food production are limited by planting rate.
You have not established that planting rate in LDCs could be improved with robotics.
You have not established that even if planting rate in LDCs could be improved with robotics, that farmers in LDCs could buy them. If these are intended as charity, that robots are superior to equivalent cash donations.
You have not established that even if all the above were true that there exists battery technology to power this up.
But you're worried about the outer covering of these robots.
Do you understand why this does not look like you are being serious?