Granular Soil Structure Granular Soil Structure Crusted Soil Crusted - PowerPoint PPT Presentation

Granular Soil Structure Granular Soil Structure

Crusted Soil Crusted Soil

Soil Compaction Soil Compaction

Native Soil Structure Native Soil Structure

Microbes/Livestock Microbes/Livestock • Bacteria Bacteria 1000 lbs/A 1000 lbs/A • Actinomycetes 1000 lbs/A • Molds M ld 200 lbs/A 200 lb /A • Algae 100 lbs/A • Protozoa 200 lbs/A • Nematodes Nematodes 50 lbs/A 50 lbs/A • Worms 1000 lbs/A

Poor Soil Structure Prevents Water Movement Water Saturated Soil Air Space Moisture Soil Moisture Soil Dry Soil

Nutrient Uptake and Root Structure Nutrient Uptake and Root Structure

Factors Affecting Active Nutrient Uptake Uptake Oxygen Temperature Ion Interference

General view of the General view of the No residue No residue research plots (Ponta research plots (Ponta Grossa - PR) Grossa - PR) 5 ton/ha 5 ton/ha 10 ton/ha 10 ton/ha

Effect of the amount of residue in the corn root Effect of the amount of residue in the corn root system distribution w ith depth (Mean 13 hybrids / system distribution w ith depth (Mean 13 hybrids / residue treatment) residue treatment) resid e treatment) resid e treatment) No 5,0 ton 10,0 ton residue residue residue/ha residue/ha residue/ha residue/ha Depth (cm) 0-10 404 492 575 10-20 275 349 392 20-30 194 256 281 30-40 218 298 294 40-50 237 309 342 317 317 50-60 249 312 297 208 271 60-70 235 169 70-80 225 192 122 155 80-90 109 97 71 90-100 2 1 4 8 2 7 9 8 3 0 0 1 cm / 0 ,8 m 2 cm / 0 ,8 m 2 cm / 0 ,8 m 2 100% 130% 140%