No longer can farmers plant seeds from last years crop, pray for rain, and expect to feed the world. Things have changed, mostly for the better. My grandfather plowed with mules, killed weeds with a hoe, fertilized with manure, harvested by hand and produced about 60 bushels of corn per acre. About average for the time. Then came the age of mechanization. Farmers now plow with tractors, plant GMO seeds, kill weeds with herbicides, fertilize with liquid nitrogen, harvest with combines and produce about 150 bushels of corn per acre; more than double the previous yield. Informed sources estimate that farmers will have to double their yield again by 2050 to feed the world. That requires precision farming, and precision farming requires data. You can’t manage what you don’t understand, and you can’t understand what you can’t see.
That is why farmers need the UAVs to image their fields. Now they use satellites and manned aircraft; neither is efficient. Farmers need to image their fields often, and on their schedule, in order to manage fertilization, irrigation and apply herbicides and pesticides to affected areas quickly before damage is done or the infestations spread. Only UAVs can provide this data in a timely and cost effective manner.