Friday, 30 October, 2020

100+ Agricultural Terms and their Meanings


Agriculture is a broad field of science and there are terminologies used in the field of agriculture. Some are pertinent to farming while others to other sub-fields of agric science.

Some of the words associated with farming and agriculture generally are discussed in this article.

These agriculture vocabularies are listed from A to Z and are both basic and modern terms with their clear definitions. You can always check back for update as we’ll keep adding to the words.

basic and modern agricultural terminologies and their definitions

 

Adventitious :  Arising in abnormal position; e.g. roots developing from stem or leaf cutting.

Aflatoxin :  Poison produced by the attack of Aspergillus flavus in groundnut seeds.

Allicin :  A pungent substance released when garlic is cut or crushed; the substance allinine is converted to allicin under the influence of the enzyme allinase.

Annual :  A plant which completes its life cycle in one year.

Anthesis : The time the flower is expanded, or the process of dehiscence of the anthers.

Apical dominance : The condition whereby by shoot apex regulates the growth and development of the lateral buds and branches. Auxin, a growth hormone, has been indicated to be involved in the process.

Arable crop :  A crop that can be grown for one season.

Awn :  A fine bristle terminating an organ, as found in the flowers of grasses.

Axillary : Arising from axil.

Bast fibres : Fibres found associated with the phloem, pericycle and cortex of the stem of certain plants; they arise either from the cambium or from the apical meristem

Berry : Many seeded succulent fruit in which the wall (pericarp) consists of outer akin (exocarp), comparatively thick fleshly mesocarp and inner membranous endocarp.

Biennial : A plant which requires two leaf years to complete its life-cycle, flowers, fruits and dies in its second year IR season.

Bolls : The subspherical or avoid fruits of cotton.

Bulb : An underground storage organ with a much shortened stem bearing fleshly leaf bases or scale leaves enclosing the next year’s bud.

Bulbil : An aerial bulb or bud produced in a leaf axils or replacing the flower, which on separation, is capable of propagating the plant.

Capsule : A dry dehiscent fruit composed of two or more carpels and either splitting when ripe into valves or opening by slits or pores.

Carpophore : A pointed stalk-like structure which elongates by means of an intercalary meristem at the base of sessile ovary of groundnut and pushes the ovary into the soil. It is positively geotropic.

Caryopsis : One seeded indehiscent grain of a grass crop in which the pericarp and testa are fused.

Related POST :   High-Protein Animal sources for Pig Feeds

Cereal : A grass cultivated for its edible grains.

Coleoptile : The sheath covering the first leaf or plumule of a grass seedling as it emerges from the soil.

Coleorhiza : A sheath covering the tip of the first root or radicle from seed.

Compound fertilizer : Fertilizer made up of two or more elements e g NPK.

Corm : A solid, short, swollen underground stem containing food material and bearing buds in the

Axils of scale : Like remains of leaves of previous season’s growth.

Cormel: A corm arising vegetatively from a parent corm.

Cribs : Storage structures made from wooden slats or wire mesh for grain storage.

Culm : The stem of grasses.

Cultivar : An agricultural variety, which has originated and persisted under cultivation, as distinct from a botanical variety.

Curing : To prepare crops for preservation by drying or other processes.

Decortication: Removal of the shell of groundnut by hand or machine.

Determinate : When the terminal or central flower of an inflorescence opens first and the prolongation of he axis is arrested.

Dhurin: A glucoside in young plants and leaves of sorghum, which upon breaking down releases prussic acid.

Dicotyledon: With unisexual flowers and with the staminate and pistillate flowers on different plants.

Diploid: With two sets (genomes) of chromosomes, as occurs in somatic or body cells; usually written 2n, having twice the basic chromosome numbers of the haploid germ cells.

Dioscorine : Poisonous alkaloid found in some wild species of Dioscorea.

Ear : The female inflorescence of the maize plant.

Ear leaf : Leaf subtending the ear in maize.

Eye : A bud on a tuber

Fadamas : Flooded plains suitable for the growth of swamp rice.

Fermentation : The incomplete break down of glucose, in the absence of oxygen, to ethyl alcohol and carbon dioxide especially by bacteria and yeast cells.

Fibres : Long narrow non-living cells (when mature) which serve a purely mechanical function. They are generally three types- surface, stem and leaf fibres.

Flag leaf : Leaf subtending the inflorescence in some cereal crops.

Fruits : Ripened ovary of the flower, enclosing seeds.

Fuzz : Outgrowth or hair from the epidermis if cotton seed in which the hairs are circular in cross section, at first thin walled but cellulose is then deposited until the lumen is almost obliterated.

Gari (Garri) : Grated , fermented, sieved and fried cassava mash. In its final form, it is a free-flowing granular meal used in a variety of ways.

Gining : Process of separating the lint from the seed and fuzz in cotton in a machine called a gin.

Related POST :   Pig feeds Preparation Methods: Wet or Dry Feed?

Glumes : The lower two sterile bracts as the base of grass spikelets.

Granaries : Storage structures made locally with mud and thatch.

Herbaceous : Not woody.

Husk: The coarse outer covering of some fruits, eg. Maize.

Hydrocyanic acid (HCN) : A very toxic compound found in many plants, including cassava.

In cassava, HCN is concentrated mainly in the peel of the tuber and in the leaves.

Indehiscen : Not opening when ripe.

Indeterminate : An inflorescence in which the terminal followers are the last to open, so that the floral axis may be prolonged indefinitely.

Inflorescence : The arrangement and mode of development of the flowers on the floral axis.

Lemma : The outer (lower) bract enclosing each floret in a grass spikelet.

Ligule : The thin membranous protection from the top of the leaf-sheath of grasses; the outgrowth separates the leaf sheath and leaf blade.

Linear : Long and narrow with parallel sides.

Lint : Outgrowth from epidermis of cotton seed in which the hairs grow to a greater length and the deposition of cellulose is reduced, giving a lumen or cavity so that the hairs collapse on drying to form a ribbon.

Lobed : Divided, but not into separate leaflets.

Locule : Compartment or cell of an ovary, fruit or anther.

Lodicules : The scales, usually two in number, at the base of the ovary in grasses, believed to be the rudimentary perianth, which swell to cause the opening of the floret.

Lycopene (lycopersicin) : A pigment which together with carotene impacts the red coloration on the fruit of tomatoes.

Minisett : Yam sett less than one quarter of the minimum size (100g) usually planted for seed tuber production.

Monocotyledon : Angiosperm having a single cotyledon or seed leaf.

Monoecious : When male and female flowers are separate, but borne on the same plant eg. in maize.

Nicotine : Alkaloid in tobacco, which produces stimulating effects.

Nodules : A tubercle formed on legume roots by symbiotic nitrogen fixing bacteria of the genus Rhizobium.

Nursery : Environment where plants are raised for a certain period before transplanting to the field.

Paddy : A term sometimes used to describe lowland rice or unmilled rice.

Palea : The inner (upper) of the two bracts enclosing each floret in a grass spikelet. It is usually thin and papery.

Panicle : An inflorescence with a main axis and subdivided beaches.

Parboiling : Pre-milling treatment of rice in which the unhusked rice is soaked in water and steamed under pressure until the outer layers of the starchy endosperm are partly sterilized.

Pedicel : Stalk of each individual flower of an inflorescence.

Related POST :   How to Grow and Manage Cocoyam Farm for Better Gains

Peduncle : The stalk of an inflorescence or partial inflorescence.

Peg : Same as carpophore.

Photoperiodism : The response of plants to different day lengths or light periods.

Plumule : The primary bud of an embryo IR germinating seed.

Prop roots : Roots which arise from nodes above ground in some cereals and help to support the plant. They may be thick, partially photosynthetic and often deeply pigmented.

Protandrous : Stamens shedding pollen before the stigma is receptive.

Protogynous : When the stigma is receptive before the pollen is shed.

Prussic acid : Same as HCN

Rachilla : Secondary axis of the stalk of grass spikelet.

Rachis : The principal axis of an inflorescence.

Radicle : The first root of an embryo or germinating seed.

Rosette : A cluster of spreading or radiating basal leaves formed naturally or induced by disease as in groundnut.

Scape : A leaf-less flower stalk arising from the ground.

Setts : Cut pieces of tubers of planting.

Sessile : Without stalk

Scutellum : A shield shaped organ surrounding the embryo of a grass seed, morphologically a cotyledon.

Silos : Unventilated structure for bulk storage of dry grains; made of concrete or metal.

Simple fertilizer : Fertilizer made up of one element.

Spadix : A flower spike with a fleshy or thickened axis.

Spathe : A large bract enclosing a spadix, or two or more bracts enclosing a flower cluster.

Spike : A simple indeterminate inflorescence with sessile flowers along a single axis.

Spikelet : The unit of inflorescence in grasses, consisting of two glumes and one or more florets.

Solanin : Poisonous glucoside in green grown for their stimulating effects due to the presence of some alkaloids.

Stolon : A trailing stem usually above the ground which is capable of producing roots and shoots at its nodes.

Striga : Parasitic weed

Sucker : A shoot produced from a crown or rhizome or axillary buds.

Tapioca : Made from cassava; it is a wet or partially dried sieved starch particles heated with continuous stirring.

Tendril : A thread-like climbing organ formed from the whole or part of a stem, leaf or petiole.

Tiller : A shoot from the axils of the lower leaves, as in some grasses.

Tuber : The swollen portion of an underground stem or root, which acts as a stronger organ and propagule.

Unisexual : Of one sex, having stamens only or pistils only.

Variety : A group of individuals within a species that differ from the rest of the species. An agricultural or horticultural variety is referred to as a cultivar.

Vegetative propagation: Propagation by asexual means e.g. by use of stem pieces, setts, suckers, etc.

Weed : A plant growing in a location where it is not wanted.