1. Chemical Effects of Burning
CCA 2005

2. Wheat Research Results
Oregon: burning supresed Pythium root rot and Rhizoctonia root rot, and enhanced eyespot and take-all.
Disease was less damaging in a rotation versus continuous wheat
Crop residue burning reduced downey brome seedbank

3. Wheat Research Results
UK: Temporary (1-year) burning after seven years of incorporating chopped straw increased average yield on tillage treatments by 17%.
Oregon:
Burning did not increase total N uptake.
Stubble burning did not decrease foot rot (Pseudocercosporella herpotrichoides) incidence or severity in either of the 2 yr that it was present.
Burning reduced downybrome (Bromus tectorum) density in the 1 yr that it was not effectively controlled by mechanical tillage

4. Effects of Burning Montana
permanent negative effect on soil quality and overall soil health
decreases in organic matter, total nitrogen, total sulfur, carbon/nitrogen ratios, extractable carbon, polysaccharide, ammonium, and available phosphorus

5. Ash Addition (Forest)
Wheat Straw (0.5%N) 45 bu/ac: 3000 kg grain 2600 lb/ac: 3000 kg straw =14 lb N/ac in straw
=15 kg N/ha in straw

6. Change with time

7. Change with time

9. Organic Matter

10. Burning Philippines (increased CO2) Canada: effect on Health
CIMMYT: Need for world wide adoption of no-till, Argentina 70% no-till
Idaho
Disease control
Disease (air pollution and nutrient loss-S)
Rice-Wheat Consortium
Black Smoke in China