Recently in Agriculture Category

Paper has a long history of "grass" based feedstock -- think papyrus and even cotton!  Maybe it's time to rethink trees as the best natural resource for papermaking.  The chemicals used to convert wood into pulp requires enormous quantities of very caustic, very toxic chemicals. Green chemistry could be a way of exploring other fibers that require less chemicals and less toxic chemicals for the papermaking process.    

Canopy has launched an online survey to gather information that will help assess market interest in North America for papers made with agricultural residues.

Agricultural Residues such as Wheat Straw

"This study is the first of its kind in North America. Up until now, information about the market viability of non-wood paper has been anecdotal," says Neva Murtha, Second Harvest Campaigner with Canopy. "When done, we'll be able to translate demands for eco-paper into initiatives that help make straw papers a North American reality."

Straw Based Papers

Last year's successful trial of the Wheat Sheet issue of Canadian Geographic showed that non-wood papers pass the technical and quality requirements of the North American market. Also apparent during last year's trial was a significant level of interest by large paper consumers in agricultural residue paper alternatives such as the Wheat Sheet. With environmental concern on the rise, so is support for innovative business solutions that alleviate the stress on intact and endangered forests and the climate. Diversifying North America's paper fibre basket to include agricultural residues rather than carbon and species rich forests is one such solution that could also help ensure a secure supply of fibre for domestic producers.

Environmental Paper

This study is designed to help Canopy identify new and emerging opportunities for environmental paper. The survey will provide further information about what level of support exists for non-wood paper development in North America - a key element in new pulping capacity being developed in the US and Canada.

All survey input shall remain confidential and only used in aggregate numbers, unless otherwise approved by participating companies. Data collection will be targeted primarily at large paper consumers, such as publishers, printers, office retailers, and will capture data such as demand tonnage, priority grades, and how participants would like to engage in further stages of non-wood paper development.

To complete the survey about agricultural residue paper


For more information:
Canopy's work to build a market for agricultural residue papers, please visit their website.
For more information on the Wheat Sheet
CONTACT:
Neva Murtha, Second Harvest Campaigner
604-817-4974 | neva@canopyplanet.org 

New Science Estimates Carbon Storage Potential of U.S. Lands
Nation's Forests and Soils Store Equivalent of 50 Years of U.S. CO2 Emissions

The first phase of a groundbreaking national assessment estimates that U.S. forests and soils could remove additional quantities of carbon dioxide (CO2) from the atmosphere as a means to mitigate climate change.

The lower 48 states in the U.S. hypothetically have the potential to store an additional 3-7 billion metric tons of carbon in forests, if agricultural lands were to be used for planting forests.

This potential is equivalent to 2 to 4 years of America's current CO2 emissions from burning fossil fuels.

"Carbon pollution is putting our world--and our way of life--in peril," said Secretary of the Interior Ken Salazar in a keynote speech at the global conference on climate change in Copenhagen, Denmark.  "By restoring ecosystems and protecting certain areas from development, the U.S. can store more carbon in ways that enhance our stewardship of land and natural resources while reducing our contribution to global warming."

U.S. Geological Survey scientists also found that the conterminous U.S. presently stores 73 billion metric tons of carbon in soils and 17 billion metric tons in forests.

This is equivalent to more than 50 years of America's current CO2 emissions from burning fossil fuels. This shows the need to protect existing carbon stores to prevent additional warming and future harm to ecosystems.

Habitat Carbon Absorption = 30% of Fuel Emissions

America's forests and soils are currently insufficient in soaking up the nation's accelerating pace of emissions. They currently absorb about 30 percent (0.5 billion metric tons of carbon) of the nation's fossil fuel emissions per year (1.6 billion metric tons of carbon). Enhancing the carbon storage capacity of America's and the world's ecosystems is an important tool to reduce carbon emissions and help ecosystems adapt to changing climate conditions.

Biologic carbon sequestration

"The tools the USGS is developing--and the technologies behind those tools--will be of great use to communities around the world that are making management decisions on carbon storage," said USGS Director Marcia McNutt. "The USGS is conducting a national assessment of biologic carbon sequestration, as well as an assessment of ecosystem carbon and greenhouse gas fluxes, which will help determine how we can reduce atmospheric CO2 levels while preserving other ecological functions."

To determine how much more carbon could be stored in forests and soils, USGS scientists analyzed maps that represent historical vegetation cover before human alterations, as well as maps of vegetation that might occur if there were no natural disturbances, such as fires, pests and drought. These maps were compared to maps of current vegetation and carbon storage.

The next phase of this work will assess the additional amount of carbon stored in Alaska's ecosystems, including its soils and forests. The USGS plans to collaborate with U.S. Department of Agriculture and other agencies to examine potential carbon storage in soils.

The USGS is conducting research on a number of other fronts related to carbon sequestration. These efforts include evaluating the potential for storing carbon dioxide in geologic formations below the Earth's surface, potential release of greenhouse gases from Arctic soils and permafrost, and mapping the distribution of rocks suitable for potential mineral sequestration efforts.

For more information about this assessment, visit http://pubs.usgs.gov/ofr/2009/1283.

Trees provide many benefits, some of which can be quantified, such as

• reduced energy costs
• oxygen generation
  
• stormwater runoff reduction
• air quality improvement
• carbon sequestration
• food production: fruit and nuts
• species habitat for native biodiversity
  
• soil conditioning with natural compost and root incursion
• urban heat island reduction with shade
  

and others that can be described qualitatively, such as

• conservation education
• improved human health
• neighborhood revitalization
• stress reduction
• hammock infrastructure!
  
• climbing courses and virtual playgrounds for kids!
  
• job training and green jobs
• recycling green waste
• tourism appeal
• natural landmarks and heritage
  
• natural beauty!
  

Young Farmers and Ranchers Leadership Conference brought topics of CHANGE to California's farmers.

National Young Farmers and Ranchers conference in Baltimore. During the opening session, an economist from Washington, D.C., said, "I never thought I would say this, but agriculture is a shining star in our slowing economy."

Commodity prices for a lot of products are up but that is not the only change on agriculture's horizon. Public perception and interest in the food supply is changing, too. Being a grower myself, I have noticed the variety of labels on food I see in the stores. There is organic, all natural, certified clean, free range, grass fed and carbon free. But I think the most important label of all is that it's California grown.

California farmers and ranchers grow, pack and ship some of the safest and best-quality products in the world. Many times we take this for granted because we can go to just about any store in California and have an abundance of beautiful produce to choose from. People living in other states or countries don't enjoy this same selection.

Consumers are becoming more educated on where their food comes from and how it is produced. They are concerned with food safety and as growers we need to be prepared to assure them that the product they are getting is the best in the world.

Consumers are not the only ones changing. Farmers and ranchers are changing, too. Many are beginning to understand the importance of telling their story and making sure their voice is heard on local and statewide issues affecting their farms and ranchers.

In a recent informal survey of young farmers and ranchers ages 18-35, conducted by the American Farm Bureau, 75 percent said state and local issues like property taxes concern them more than federal issues.

The same survey showed the vast majority--83 percent--of young farmers and ranchers are more optimistic about farming than they were five years ago. This is up from only 61 percent in 2003.

As consumers are showing more interest in the origin of their food, farmers and ranchers are doing even more to continue their role as stewards of the land. Fifty-five percent of those surveyed said they practice conservation tillage and 49 percent rotate three or more crops. Forty-percent said they use soil and tissue analysis and 36 percent use integrated pest management practices.

For more information on Young Farmers and Ranchers, call your county Farm Bureau office. For general information on the YF&R program, visit www.cfbf.com/programs/yfr or contact Danielle Rau at (916) 561-5598.

SOURCE:  California Farm Bureau

University of California researchers have studied the effects of irrigation on almonds for about 20 years. It has generally been thought that about 42 inches per acre per season is a reasonable estimate of water use by mature, productive almonds.

Seasonal water use follows a bell-shaped curve. Under this 42-inch model, water use starts out low after leafout at about 1.0 inch every 15 days, peaks at about 4.5 inches every 15 days in the first half of July, and declines back to about 1.0 inch every 15 days as the season ends.

In some situations, growers may have much less than 42 inches of water available from stored soil moisture and irrigation water. The challenge becomes managing crop stress over the course of the season.

One relatively effective approach that doesn't rely heavily on field monitoring is to attempt to sustain crop stress uniformly across all stages of tree growth and crop development by using estimates of crop water use. The limited water allocation is applied as a consistent percentage of the seasonal water use pattern. If 24 inches of irrigation water are available, representing about 60 percent of the potential water use, then the irrigation water would be allocated at about 60 percent of real-time or historic rates of crop water use over the course of the season.

UC water management specialist David Goldhamer of the Kearney Agricultural Center published results of a four-year study illustrating the effectiveness of the above approach.

Almonds were produced with 55, 70, 85 and 100 percent of a 42-inch water allocation.

Water was either cut back as a consistent percentage of estimated crop water use to try to sustain less pronounced crop stress across all stages of crop growth, or cutbacks targeted only pre-harvest, or post-harvest crop stages for higher crop stress.

The effect of limited water supply was minimized with uniform allocation of water across all crop stages. However, productivity was reduced particularly with 55 percent and 70 percent allocations.

• The uniform crop stress strategy gave both the highest four-year yields, and the largest average nut size within each water allocation.
  
• Sharp cut backs before harvest resulted in the second highest yields, but reduced nut size.
  
• Sharply withholding water after harvest affected bud development and reduced yield the next season.

UC Davis professor Ken Shackel was able to get by with a water allocation of about 85 percent of full supply with no short-term yield loss or effect on nut size by using a pressure chamber to actually track midday crop stress and keeping it within the -12 to -20 bar range in July during hull split.

For more information on on water management refer to UCManageDrought.ucdavis.edu.