sabadilla:
Schoenocaulon officinale A liliaceous plant of Mexico, having long, grasslike leaves and bitter seeds. The seeds of this plant are used medicinally as a source of veratrine and veratridine.

sage:
Saliva officinalis. A grey-green herb, whose leaves are used as herbal medicine and seasoning.

salicycilic acid:
(C6H4(OH)(COOH)) Acid used in medicine to prepare aspirin and as is, and as a food preservative.

saturated fats:
Fat with no double bonds between atoms of carbon. Called saturated because no more hydrogen can be added.

secretion:
The act or process of separating, elaborating, and releasing a substance that fulfills some function within the organism or undergoes excretion. Or the product of this act.

sequences:
Also: one-dimensional array. A type of information where one element comes after another.

short rotations:
A planting system where the crop in one area changes frequently.

silt:
Earthy matter, fine sand, or the like, carried by moving or running water and deposited as a sedement.

sisal:
Also: sisal hemp. A fibre from Agave sisalana. Native to Yucatàn.

small-pox:
An acute, highly contagious, febrile disease, caused by a virus, and characterised by a pustular eruption that often leaves permanent pits or scars.

sodium carbonate:
Na2CO3. Also called soday ash, an anhydrous, grayish-white, odourless water-soluble powder.

soja:
Also: soybean. A bushy, leguminous plant. Of the Old World, grown in the U.S. chiefly for forage and soil improvement. The seed of this plant is used, used for food, as a livestock feed, and for a variety of other commercial uses.

solvent:
A substance that dissolves another to form a solution.

sorghum:
Sorghum vulgar. A cereal grass, having broad, corn like leaves and a tall, pithy stem bearing the grain in a dense thermal cluster. Also the syrup made from sorgo.

sorgo:
Any of several varieties of sorghum grown chiefly for the sweet juice yielded by the stems, used in making sugar and syrup and also forfodder.

soybean:
A bushy, leguminous plant. Of the Old World, grown in the U.S. chiefly for forage and soil improvement. The seed of this plant is used, used for food, as a livestock feed, and for a variety of other commercial uses.

spasm:
A sudden, abnormal, involuntary muscular contraction.

species:
A class of individuals having some common characteristics or qualities.

spillways:
When gravity drainage is not possible, a pumping system will be necessary. In addition, surface drainage may be necessary to properly route excessive water inflows. This may be accomplished through drainage culverts or grassed spillways.

spirula:
Any cephloapod of the genus Spirula, having a flat, spiral shell that is partly inside and partly outside the posterior part of the body.

sprouts:
A new growth from a germinating seed, or from a rootstock, tuber, bud, or the like.

spruce:
Any evergreen, coniferous tree of the genus Picea, having short, angular, needle shaped leaves attached singly around twigs.

steroids:
Any of a large group of fat soluble organic compounds, as the sterols, bile acids, and sex hormones, most of which have specific physiological action.

stranglevine:
Mossenia odorata. A vine which preffers to grow along tree trunks, in the end choking them.

stringency:
Strictness, closeness, rigor.

subsidy:
A direct (usually financial) aid furnished by a government to a private industrial undertaking, a charity organization, or the like.

subsequent:
Following in order or succession; succeeding.

substrate:
A substance acted upon.

sulfer:
Symbol: S. Atomic mass: 32.006. A non metallic yellow element. Used in the making of gun powder and matches.

sulfate SO4 supplements:
An addition to a substance, in order to complete, reinforce, or extend a whole.

Sumerians:
People who lived in an ancient region in southern Mesopotamia which contained a number of independent cities and city-states which were established as early as 5000 B.C.

supplements:
An addition to a substance, in order to complete, reinforce, or extend a whole.

support fibres:
The tissues of a plant which bear or hold up the load, mass, or structure of the plant.

surface area:
The outer face, outside, or exterior boundry of a thing.

surface-active agent:
Any substance that when dissolved in water or an aqueous solution reduces its surface tension or the interfacial tention between it and another liquid.

surfactants:
See surface-active agent.

surplus:
That which remains above what is used or needed.

sustainable:
To be supportable, and maintainable.

synthesised:
To have been produced by the combining of two or more elements or materials to create a new material or abstract entity.

synthetic:
Concieved by artifical means, in a laboratory for example, as opposed to by natural means.

synthetic mulch:
A mulch made with man made fibres. See mulch.

systematic:
Having, showing, or involving a system, method, or plan.
Index