One of the 13 essential elements for plant growth and is one of the 6 Major Elements, based on concentration required principle form of uptake: ionic forms dihydrogen phosphate (H2PO4–), monohydrogen phosphate (HPO42-), and orthophosphate (PO43-) amount required for healthy plant growth: 2,000 ppm, 0.2%, dry soil matter Soil conditions related to a deficiency of phosphorous: mineral soils low […]
One of the 13 essential elements for plant growth and is one of the 6 Major Elements, based on concentration required amount required for healthy plant growth: 14,000 ppm, 1.4%, dry soil matter Principle form of uptake: ionic forms ammonium, (NH4+) and nitrate (NO3–) the preferred form changes from NH4 to NO3 as the plant approaches maturity Nitrate […]
movement of elemental ions into proximity of plant roots for absorption ions move from within soil solution from an area of high concentration to an area of lower concentration by diffusion as ions are absorbed, the concentration gradient causes ions to diffuse movement by diffusion is measured in millimeters doesn’t require much soil moisture, unlike […]
movement of soil solution through soil brings elements into proximity of plant roots for uptake elemental ions can be carried considerable distances by mass flow mass flow moves in 3 directions: down, up (by evaporation), and laterally (to a small degree) by an advancing water front low moisture content impedes mass flow Calcium ions (Ca2+) […]
Soil Solarization Moisten the soil, then lay clear plastic tarps over the soil for 4-6 weeks during the hottest part of the summer. Daytime temperatures need to be at least 80 degrees, F. for it to be warm enough. effects can be improved by using a second layer of clear plastic, and by incorporating poultry […]
Fava beans are self-pollinating annuals, and their seeds are viable for 2 years. Cold-weather fava beans, such as Banner, can live at temperatures as low as 10°F. Fava beans are classified as ‘heavy givers’, which means they bring large amounts of nitrogen into the soil. Fava beans are exceptionally good for green manuring if you plan to […]