Banks of light-emitting diodes (LED) illuminate plants in greenhouses. Purdue University researchers discovered that LEDs can provide a more beneficial light spectrum to greenhouse plants than conventional lighting while using 75 percent less electricity. Courtesy of Celina Gomez.
This post is part of the Science Tuesday feature series on the USDA blog. Check back each week as we showcase stories and news from USDA’s rich science and research portfolio.
For about 2,000 years – since Roman emperor Tiberius demanded fresh cucumbers for lunch year ‘round – farmers have been looking for better ways to extend the growing season. Now, a team of researchers led by Purdue University has found a way to grow more produce and save money doing it.
Greenhouses and other structures protect crops from harsh environmental conditions. Over the last 50 years or so, some growers have added artificial lighting to compensate for shorter winter days or when conditions are cloudy. However, the problem with most lighting systems is that they are relatively costly to install and do not provide the light spectrum that is most efficient for photosynthesis in plants. Read more »
My mom raised five kids, taught high school chemistry for 15 years and then retired back to the family farm in 1986. Her new life on the farm depended on the Salisbury, MD farmers market where she sold daylilies. The farmers market, just one of 8,000 or more markets listed in USDA’s National Farmers Market Directory, gave her the opportunity she needed to start her own business.
Each Saturday she loaded up her station wagon with plants and drove into town, displaying the lilies by color. When she wanted to expand her plant offerings, my brother built her a small greenhouse. She became known as the farmers market’s Flower Lady. Read more »
Volunteers help harvest native seedlings at the Hiawatha National Forest greenhouse in Marquette, Mich. U.S. Forest Service photo.
Biologists have long recognized the important role native plants play in maintaining a healthy forest. When native plants are crowded out by invasive plants, those native species can suffer to the point of extinction.
Since the early 1990s, the Hiawatha National Forest has operated a greenhouse in Marquette, Mich. The idea is to provide both native seeds and seedlings for successful restoration of sites impacted by logging or disturbed by other land management activities. For instance, when aging culverts are replaced, native plants can be introduced to re-vegetate disturbed soil. Seeds and seedlings are also used to enhance existing wildlife habitats. Read more »
Forward Operating Base Sharana, Paktika, Afghanistan – Since the U.S. Department of Agriculture began building up its corps of civilian agricultural experts from 11 in 2009 to 60 in 2010, USDA’s focus in Afghanistan has shifted from small-scale development to large-scale capacity building. Greater resources has allowed USDA and our U.S. government partners to help build and train a team of Afghan agricultural extension workers that bring better tools and technologies to farmers in rural areas – much like our extension service in the United States. In southeast Afghanistan, in a volatile province called Paktika, six teams of Afghan agricultural trainers and extension workers are leading a variety of low-cost projects that are uniting communities and growing agricultural production and diversity. Read more »