Hi-Tech Weed-Killer

Makarand writes "Instead of making improvements to automatic mechanical weeders, Engineers at UC Davis have been busy developing the next generation robotic weeder which will use computerized images of crop rows to identify weeds and zap them. The system can identify weeds from the regular crop by assessing shape, color, size and other variables from the captured images of the crop row. A robotic cultivator will then blast weeds with a weedkiller using syringes mounted on a tractor. A GPS allows the system to calculate weed type densities within the field and the amounts of chemicals dispensed in the area."

Comments

weeds aren't the problem, weed killer is.

[aethera]

This gives factory farming a new name!
Why do we get weeds? As they say, Nature abhors a vacuum. So, any tilled space between plantings and rows is enrgy going to waste. Weeds sprout up in this empty space to capture that energy.
So if you want to control weeds in a manner that doesn't cost (hundreds) of thousands, pollute rivers, stream and groundwater, just keep it simple stupid:
Plant cover crops in-between and among your primary crop. It could be a harvestable plant, such as pole beans on corn or basil with tomatoes, though this makes harvesting a job for people and not machines. Or plant a companion crop which adds nutrients to the soil. Legumes add nitrates, buckwheat grass makes great compost, just till it under with your next planting. Even better plant flowers and other hebs that attract colonies of beneficial insects that will help control insect populations in your primary crop.
We got by for a long time without these chemicals. Organic farmers in the US and Bio-dynamic farmers in Europe and harvesting yields that dwarf factory farms, with better flavor and nutrients than conventional produce, and no toxic chemicals.