Nutrient Availability to Plants (fill-in)
Outline of the section from "Home Gardener's Guide to Soils and Fertilizers" EB1971
- Plants can take up only _____________________ that are in _____________________.
- Most soil nutrients are tied up in insoluble _____________________ and _____________________.
- These nutrients must be converted to _____________________ forms and _____________________ into the soil solution.
- This process occurs through _____________________ of minerals and biological _____________________ of organics.
- Weathering of minerals is a very slow process that releases small amounts of nutrients each year.
- The rate of nutrient release from soil organic matter is somewhat _____________________ and depends on the _____________________ of biological activity in the soil.
- Nutrient release from soil organic matter is fastest in _____________________ soil and nearly _____________________ in cold or dry soil.
- _____________________ pattern of nutrient release is similar to the pattern of nutrient uptake by plants.
- About 1 to 4 percent of the nutrients in soil organic matter are released in _____________________ form each year.
- Soluble, available nutrients are in _____________________ form.
- K, Ca, Mg = cations. Cl = anion. Draw your cat face here.
- Clay and organic matter surfaces have negative charges and can attract _____________________.
- "They hold nutrient cations in a ready reserve form that can be released rapidly into soil solution to replace nutrients taken up by plant roots. This reserve supply of nutrients contributes to a soil's fertility."