Organic farming study -- Final End

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Date Posted: 21:51:14 05/31/02 Fri
Author: Drummond
Subject: Organic farming study

I buy organic produce whenever it isn't ridiculously higher than commercial, and I've noticed a difference in flavor. However, I tend to think it has more to do with small farming vs. mass production than the lack of pesticides and chemical fertilizers.

I've heard that organic farmers are developing pest resistance strains and may actually overtake commercial production in price and productivity. Pesticides cost money.

Ironically, the pesticide companies have been trying to undermine the organic industry. First, they managed to pass a law making it illegal to introduce living organisms into harvested produce, even if the net result is fewer bugs. When Jim Hightower was agricultural commissioner in Texas, he refused to enforce the federal law and allowed for the sale and use of beneficial insects and nematodes. The federal government, under Reagan at the time, came in and shut down the businesses doing an end around of Hightower. Reagan's "New Federalism" was shown to be very selective.

And recently they've pushed for national standards of an "organic" labelling that would allow many loopholes, and not include irradiated or genetically engineered produce, which is barred by the organic standards of California and Washington State. The effort is to create a national watered down standard. More of that "federalism" at work.
Organic farming 'a realistic choice'
By Alex Kirby
BBC Environmental Correspondent

After a 21-year study, Swiss scientists have given a ringing endorsement to organic farming methods.

They found organic yields were on average 20% smaller than those from conventional agriculture.

But the ecological benefits more than made up for this, and the organic crops proved more efficient users of energy and other resources.

The scientists conclude that organic production is a viable alternative to conventional ways of farming.

They are from the Research Institute of Organic Agriculture and the Swiss Federal Research Station for Agroecology and Agriculture. They report their findings in Science magazine.

The team, led by Paul Mader, compared plots of cropland grown according to both organic and conventional methods and planted with potatoes, barley, winter wheat, beet, and grass clover.

More from less

Crop rotation, varieties and tillage were identical in all the plots.

Over the study period, which began in 1978, they compared normal organic production, another organic approach called biodynamic farming, based on the work of Rudolph Steiner, and two conventional farming methods.

One of these used mineral fertilisers and farmyard manure; the other did not use the manure.

Although organic yields averaged 20% less than those from the conventional plots, the input of fertiliser and energy was reduced by between 34% and 53%, and pesticide use by 97%.

Overall, the team found, the organic systems used resources more efficiently, producing more for each unit of energy and other inputs they consumed.

The scientists also found that the organic soils housed a larger and more diverse community of organisms.

These included soil microbes, which govern the nutrient cycling reactions in soils, and mycorrhizae, root-colonising fungi which help plants to absorb nutrients.

The researchers said the fungi were at least partly responsible for the more stable physical structure of the organic soils.

Insects were almost twice as abundant and more diverse on the organic plots. Species found included pest-eating spiders and beetles.

Earthworms were also more common, and the weed flora was more diverse, with some specialised and endangered species among those found.

Better breakdown

Paul Mader said: "These results should be encouraging for farmers, because they can see that yields are stable over time, and that soil fertility has increased.

"Our results suggest that, by enhancing soil fertility, organic farmers can help increase biodiversity."

The researchers also found that the organic soils decomposed more efficiently, releasing nutrients and carbon to be absorbed by plants and microbes.

They say: "The organic systems show efficient resource utilisation and enhanced floral and faunal diversity, features typical of mature systems.

"We conclude that organically manured, legume-based crop rotations utilising organic fertilisers from the farm itself are a realistic alternative to conventional farming systems."

Expensive interval

In the UK many farmers would like to switch from conventional chemically dependent farming.

Much organic food eaten here is imported because domestic production cannot supply the market, despite the higher prices organic products attract.

But the obstacle is very often the time that must elapse between abandoning the use of chemicals and being certified organic.

Without government help, it is an impossibly expensive gap for many farmers to cross.

Images copyright and courtesy of Science

http://news.bbc.co.uk/hi/english/sc...000/2017094.stm

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Replies:

Re: Organic farming study -- sue da babe, 11:27:17 06/02/02 Sun