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Crops May Need To Move | Earth Wise

October 5, 2020 By EarthWise Leave a Comment

California has unique micro-climate diversity that creates ideal growing conditions for a wide range of crops. One third of the vegetables and two-thirds of the fruits and nuts we eat in this country are grown on the more than 76,000 farms in California. But as the climate continues to change, many farmers have started to worry about where and when crops can be grown in the future. Within the next 20 years or so, some parts of California may become too hot and dry to sustain agricultural production.

According to new research from the Lawrence Berkeley National Laboratory, by the years 2045-2049, warmer temperatures will have a significant effect on cool-season crops such as broccoli and lettuce such that their growing season will need to shift. On the other hand, warm-season crops like cantaloupe, tomatoes, and carrots will need to move to entirely new growing locations.

The study looked at five key crops that are produced more in California than elsewhere and studied the climate conditions under which they prosper and those under which they fail. They established the range of conditions for which the crops can remain successful. Finally they looked at climate projections for various parts of the state.

California’s agriculture is an essential part of our food security, so it is important to predict how future warming will affect when and where crops can be grown. Changing these things presents challenges. For example, when considering relocating crops, growers have specialized knowledge of their land and their crops. If crops need to move to a new area, either the farmers have to move to that area, or they have to grow a different crop. Either way, it presents a practical and economic burden on the farmer.

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Some of America’s Favorite Produce Crops May Need to Get a Move On by 2045

Photo, posted June 16, 2011, courtesy of the U.S. Department of Agriculture via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Hacking Photosynthesis

February 25, 2019 By EarthWise Leave a Comment

There is an enzyme known as RuBisCo that is involved in carbon fixation, the process plants use to convert carbon dioxide into sugar molecules. The RuBisCo molecule is inside the leaves of most plants and is probably the most abundant protein in the world.

RuBisCo picks up carbon dioxide from the air and uses energy from the sun to turn the carbon into sugar molecules. This process of photosynthesis is pretty much the foundation of life on Earth.

Wonderful as it is, the process is not perfect. RuBisCo is not very selective in grabbing molecules from the air. It picks up oxygen as well as CO₂ and it produces a toxic compound when it does that.

Plants operate a whole other complicated chemical process to deal with this toxic byproduct and uses up a lot of energy along the way, leaving less energy for making leaves or food that we can eat.

A research program at the University of Illinois called Realizing Increased Photosynthetic Efficiency (or RIPE) has been trying to correct this problem; they have been trying to hack photosynthesis. And they may well have succeeded.

Using genetic modification on tobacco plants, they have shut down the existing detoxification process and set up a much more efficient new one. The result is super plants that grow faster and up to 40% bigger.

The next step is to get it to work on plants that people actually rely upon for food, like tomatoes, soybeans and black-eyed peas (which are a staple food crop in sub-Saharan Africa where food is scarce.)

It will be years before we know if the process can really produce more food and be safe, but it may end up leading to a major increase in crop productivity.

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Scientists Have ‘Hacked Photosynthesis’ In Search Of More Productive Crops

Photo, posted June 10, 2013, courtesy of Boon Hong Seto via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

A Solar-Powered Vertical Farm

November 21, 2017 By EarthWise 1 Comment

Vertical farming is a method for producing crops in vertically stacked layers or surfaces typically in a skyscraper, used warehouse, or shipping container. Modern vertical farming uses indoor farming techniques and controlled-environment agriculture technology.

The Tiny Country That Feeds The World

October 3, 2017 By EarthWise Leave a Comment

The Netherlands is a small, densely populated country with more than 1,300 inhabitants per square mile. It lacks almost every resource one associates with large-scale agriculture. Nevertheless, it is the number two exporter of food in the world, second only to the United States, which is almost 300 times bigger. The Dutch lead the world in exporting tomatoes, potatoes and onions and produce many other crops as well.

A CO2 Vacuum Cleaner

July 13, 2017 By EarthWise

A new carbon capture plant, sitting on top of a waste incineration facility near Zurich, Switzerland, is now sucking CO2 out of the air to sell to its first customer. The plant opened on May 31, and is the first commercial enterprise of its kind.

[Read more…] about A CO2 Vacuum Cleaner

Food Waste Into Tires

April 21, 2017 By EarthWise

Researchers at Ohio State University have developed a way to use food waste to partially replace the petroleum-based filler that has been used in manufacturing tires for more than a century.

Restoring The Taste Of Tomatoes

March 1, 2017 By EarthWise

Over the years, tomatoes have been selectively bred for qualities such as size and firmness for shipping purposes and appearance, but selection for flavor has generally been overlooked. Many of us find that the tomatoes we buy in the grocery store just don’t taste like they used to. In fact, often they don’t taste like much of anything. Comparing them to the delicious local-grown varieties we can find during the summer provides evidence for this conclusion.