Subject
- Soil temperature[remove]13
- Soil moisture4
- Plants, Effect of soil moisture on2
- Plants, Effect of temperature on2
- Wheat2
- Alfalfa1
- Beans -- Diseases and pests1
- Broccoli -- Planting1
- Broccoli -- Varieties1
- Carbon dioxide1
- Douglas fir -- Growth1
- Douglas fir -- Seedlings1
- Ectomycorrhizal fungi1
- Geothermal engineering1
- Ground source heat pump systems1
- Growth (Plants)1
- Heat pumps1
- Irrigation1
- Mulching1
- Nitrogen1