Able to decompose or break down through natural bacterial action: Substances made of organic matter are biodegradable. Biuret

materials that are sometimes used in hydroponic growing to support the plant's roots and, sometimes, to hold nutrient. Gypsum

Deep percolation or washing of nutrients through the soil to a depth beyond the root zone of plants. Leaf Curl:

varieties or species with separate male and female flowers on each plant. Mulching

You must have JavaScript enabled in your browser to utilize the functionality of this website.

Uptake of nutrients from the soil by plant roots, or directly into the leaves from foliar sprays. Adsorption:

A sour substance: An acid or sour soil or solution has a low pH. Aeration:

Refers to soil or solution with a high pH. Any pH over 7 is considered alkaline. Aero-Hydroponics:

is culture a method which uses rockwool, net pots, vine clips or other devices to support the plant while its roots grow completely submerged in nutrient solution. Algal bloom:

different forms of the same gene; allele “A” may produce a tall plant, while allele “a” gives a short plant. Ammonification