fertilizer usage
1Fertilizer — Tennessee Valley Authority: Results of Fertilizer demonstration 1942 …
2Arbuscular mycorrhiza — An arbuscular mycorrhiza (plural mycorrhizae or mycorrhizas) is a type of mycorrhiza in which the fungus penetrates the cortical cells of the roots of a vascular plant.Arbuscular mycorrhizae (AMs) are characterized by the formation of unique… …
3Dead zone (ecology) — This article is about the oceanic phenomenon. For other uses, see Dead Zone (disambiguation). Red circles show the location and size of many dead zones. Black dots show dead zones of unknown size. The size and number of marine dead zones areas… …
4Arundo donax — Giant Cane (Arundo donax) Scientific classification Kingdom: Plantae …
5Energy crisis — An energy crisis is any great bottleneck (or price rise) in the supply of energy resources to an economy. It usually refers to the shortage of oil and additionally to electricity or other natural resources. An energy crisis may be referred to as… …
6Denitrification — Nitrogen cycle. Denitrification is a microbially facilitated process of nitrate reduction that may ultimately produce molecular nitrogen (N2) through a series of intermediate gaseous nitrogen oxide products. This respiratory process reduces… …
7Monocacy River — For other streams named Monocacy, see Monocacy (disambiguation). Coordinates: 39°13′22″N 77°27′15″W / 39.22278°N 77.45417°W / 39.22278; 77.454 …
8Carbon offset — Part of a series on Green economics Concepts …
9cyanamide — n. Chem. a colourless crystalline amide of cyanogen; any salt of this, esp. the calcium one which is used as a fertilizer. Usage: Chem. formula: CH2N2 Etymology: CYANOGEN + AMIDE …
10agricultural technology — Introduction application of techniques to control the growth and harvesting of animal and vegetable products. Soil preparation Mechanical processing of soil so that it is in the proper physical condition for planting is usually… …
