- Author: Sacha Heath
- Author: Rachael Long
Across the globe, scientists have shown that birds can be farmer allies. Insectivorous birds feed on damaging insect pests in many crops including coffee, cacao, oil palm, corn, cabbage and apples. Raptors, including hawks and barn owls, feed on rodents, including gophers, voles and mice (see blog, Barn owls help clean up rodents naturally).
Despite this deep historic knowledge that birds are important predators of crop pests, over time the perception of birds as natural enemies of pests has been generally replaced with the idea that birds are often major crop pests themselves. Indeed, some bird species — like some types of insects...
- Author: Jeannette E. Warnert
Because periodic droughts will always be a part of life in California, the UC California Institute for Water Resources (CIWR) produced a series of videos to maintain drought awareness and planning, even in years when water is more abundant.
The final video of the three-part series, which focuses on drought strategies for citrus, was launched April 6 on the UCTV Sustainable California channel. The first episode, which centered on alfalfa production, premiered Feb. 2 on the UCTV Sustainable California channel. The second video,...
- Author: Jeannette E. Warnert
Good news for dairy cows. Science has found a way to produce alfalfa with less lignin, a component of the plant that has no nutritional value. The new alfalfa variety – genetically modified in a way that puts brakes on the lignin-producing gene – was deregulated by USDA in November.
“In general, a reduced lignin trait in alfalfa is very welcome,” said Dan Putnam, UC Cooperative Extension specialist in the Department of Plant Sciences at UC Davis. “The low-lignin trait has some interesting potential implications for dairy cows and other ruminants, as well as for yield, agronomic...
Alfalfa farmers are on their second hay cutting in California’s Central Valley. Lush green fields are swathed with new generation rotary disk mowers that are nearly twice as fast as the conventional sickle mowers, cutting about 150 acres of alfalfa a day. Alfalfa hay fields are cut from four to ten times a season, averaging about seven tons per acre per year. It’s a profitable crop these days, with prices for high quality hay frequently reaching $250/ton.
But in addition to its over $1 billion value to the state of California, alfalfa provides a host of environmental benefits that are frequently overlooked. What are these benefits?
Benefits to the soil. In addition to being an important cash...
- Author: Rachael Freeman Long
- Author: Morgan Doran
In touring the back roads of California’s great Central Valley during wintertime, you may be surprised to come upon hundreds of sheep grazing alfalfa fields. The sheep are penned in by electric fences and graze the fields to near bare soil. Look closely and you may also see some Great Pyrenees dogs, used to guard the livestock from coyotes and other predators. The dogs blend in well with the sheep and it’s often fun to try to spot them in the mob.
You may wonder about this practice of ‘sheeping off’ or grazing alfalfa fields, as sheep are most associated with rangelands in the coastal foothills or the Sierras. Basque sheepherders have historically managed sheep grazing in the Sierra Nevada mountains,...