Rosalind Peterson, now retired, was the California President and Co-Founder of the Agriculture Defense Coalition (ADC). The ADC was formed in 2006, to protect agriculture from a wide variety of experimental weather and atmospheric testing programs. The website of the Agriculture Defense Coalition can be found here, and has an extensive volume of data and information based on research carried out due to concerns about weather-modification experiments which have been going on for decades.
Ms Peterson speaks about the extensive endeavours they are making to protect water supplies and agriculture from toxic chemical contamination caused by experimental weather modification programs. These programs have been carried out by private companies, the US government and US Air Force for decades. However, none of these experiments have had any public or agricultural oversight. That choice has not been afforded us.
Agriculture is affected by climate change, but damage to agriculture is happening now because of these operations across the world. In 2007, at the time of this recording, more than 50 programs were in operation in the United States.
Worldwide, international corporations are modifying our weather all the time. The alterations are mostly chemical, using jet engines to spray cocktails of chemicals like sulphur, aluminium, barium, strontium and other particulates into the atmosphere via geo-engineering schemes. These chemical concoctions get into the root systems of our trees and plant life, which can no longer absorb the water and nutrients needed to survive.
Putting chemicals into the atmosphere will change agriculture and crop production. Some of these chemicals are used to reduce sunlight reaching the earth, which affects photosynthesis, and therefore crop production.

Photosynthesis is a process used by plants and other organisms to convert light energy from the Sun into chemical energy that is then released to fuel the organism's activities. It is largely responsible for producing and maintaining the oxygen content of the Earth's atmosphere, and supplies most of the energy necessary for life on our planet. Yet, these experimenters want to block out our Sun.
The persistent jet chemtrails which produce man-made clouds exacerbate global warming by trapping warmth in the atmosphere. These chemtrails can expand to cover 4000 kilometres, and last up to 20 hours!

How do you like your skies - natural or manmade?
If you take the time to look up at our skies, you can see the changes. The clouds we are now seeing are not the normal cloud formations that would have been seen prior to the late 1980s when this cloud-seeding was increased notably.
Reduced sunlight (sometimes referred to as global dimming) results in reduced photosynthesis. Higher UV radiation has also resulted in damage to our marine life. Nothing natural and organic is left untouched by this process.
Other changes are increased humidity, a proliferation of pests, and increased molds, funguses, mildew and viruses. Our drinking water is also impacted, and we know this by the results of water-testing that has shown chemicals showing up in the water.

The impact of this pea-soup of chemicals sprayed via artificial cloud-seeding is detrimental to our health, our water, our soil, food and our trees.
Please also watch the "The Dimming" documentary to gain further knowledge on this subject. The website of the creator of this documentary, Dane Wigington, has a massive library of information on the specific subject of jet spraying and its implications on all life-forms on this planet.