residue, increased soil moisture, decreased erosion and cooler soil temperatures. Nitrogen Provides nitrogen Temporary increase in When managed correctly fertilizer or (energy) source for respiration due to has an overall positive manure microbes to break down increased rate of impact on soil organic application high C:N ratio residue breakdown of organic matter and soil quality by quicker. materials. increasing production levels and residue amounts. Vehicle or farm Compacts soil Decreases respiration, Production declines, equipment decreasing pore space, yields, water infiltration increased soil erosion and traffic water movement, and increases runoff. runoff, decreased soil oxygen for microbes quality, compacted soils and nitrogen loss from and reduced microbial denitrification. activity. Introduce each of the laboratory supplies to the students and review the laboratory processes and procedures with the class. See the guided notes lab for information. Students engage in the lab activity. Students record information and answer lab questions.
residue, increased soil moisture, decreased erosion and cooler soil temperatures. Nitrogen fertilizer or manure application Provides nitrogen (energy) source for microbes to break down high C:N ratio residue quicker. Temporary increase in respiration due to increased rate of breakdown of organic materials. When managed correctly has an overall positive impact on soil organic matter and soil quality by increasing production levels and residue amounts. Vehicle or farm equipment traffic Compacts soil decreasing pore space, water movement, oxygen for microbes and nitrogen loss from denitrification. Decreases respiration, yields, water infiltration and increases runoff. Production declines, increased soil erosion and runoff, decreased soil quality, compacted soils and reduced microbial activity. Introduce each of the laboratory supplies to the students and review the laboratory processes and procedures with the class. See the guided notes lab for information. Students engage in the lab activity. Students record information and answer lab questions.
9%20Soil%20Respiration.docx