Agriculture

As compared to traditional agriculture, hydroponic farming uses less space and less water, plus it requires no soil. It still does require a growth medium, though – and scientists have recently created a better such medium, derived from human hair.

Along with being costly, herbicides can also harm the environment … so why apply them to a whole crop, instead of just the areas where weeds are growing? That's the thinking behind the Solix Sprayer robot, which spots and sprays weeds in fields.

If a nuclear war were ever to break out, it probably wouldn’t last long. For a few days, perhaps a week, nuclear weapons would be fired between several countries and catastrophic losses would be swift. But what happens next?

While greenhouses produce wastewater, microalgae-growing operations require a source of water – which is scarce in many regions. A new project aims to address both problems, by growing water-purifying algae in readily available greenhouse runoff.

When we think of our fellow plant-eating mammals, we tend to picture them just eating whatever they find while foraging. According to new research, however, the pocket gopher actually farms its food … and it's the only non-human mammal to do so.

Farmers could be spared a lot of work and expense – plus the environment could be spared a lot of harmful chemicals – if crops didn't have to be sprayed indiscriminately. The new plant-inspecting Solix robot was designed with those facts in mind.

Interest is growing in alternative fuel sources for heavy-duty vehicles that help sidestep heavy diesel pollution, and Amogy has broken new ground in this area by fitting its ammonia-fueled zero-emissions energy system to a John Deere tractor.

Birds regularly eat large quantities of crops, and often become accustomed to stationary devices designed to scare them away. That's why scientists are now looking at using autonomous drones to do the job.

Because seeds may contain yield-reducing fungi, bacteria or viruses, they're often chemically treated before they're sold to farmers. A new mobile system, however, substitutes microbe-killing electrons for harsh and eco-unfriendly chemicals.

Farmers and ranchers have a lot of land to cover, and a lot of work to get done in a day. The Ryse Recon was designed with those facts in mind, as it's being made to quickly fly rural users from place to place.

Instead of using insecticides, farmers will sometimes cover their plants with a mesh fabric. A new such material has now been developed, which keeps out a wider range of bugs while still allowing crops to get enough sunlight and water.

Farmers will often place sheets of plastic on the ground along their crop rows, in order to help hold moisture in the soil. According to a new study, however, the use of wax-coated sand may be a cheaper and greener way to go.