interferons

Proteins secreted by vertebrate cells in response to a wide variety of inducers. They confer resistance against many different viruses, inhibit proliferation of normal and malignant cells, impede multiplication of intracellular parasites, enhance macrophage and granulocyte phagocytosis, augment natural killer cell activity, and show several other immunomodulatory functions.

interrow tillage

Tillage between the rows of growing plants

iodine value

In rendering, a measure of the chemical unsaturation of the fat expressed as the number of grams of iodine absorbed by 100 grams of fat sample.

irrigation

Application of water to soil for the purpose of plant production.

ketone bodies

Chemical substances such as diacetic acid, hydroxybutryric acid and acetone, which are produced in the liver of animals. Excessive amounts in the body result in ketosis. Elimination of ketones in urine is called ketonuria.

latex agglutination test

Agglutination tests in which the antigen is adsorbed onto latex particles before mixing with the antibody specific for the adsorbed antigen

leaf area index

The total area of the upper surface of leaves per unit area of ground that is directly below the plant.

leaf arrangement

The arrangement of leaves on a stem

plant litter

The accumulation of leaves, twigs, bark, needles, stems, fruits, branches and other plant parts on the surface of the soil.

leghemoglobin

A hemoglobin-like oxygen binding heme protein present in the nitrogen fixing root nodules of leguminous plants

light harvesting complex

A pigment-protein complex that harvests light energy and converts it to exciton energy that can migrate to the photosynthetic reaction center where photosynthesis occurs. The light is absorbed by pigment molecules (e.g., chlorophyll, bacteriochlorophyll, carotenoids, phycobilin) that are attached to the protein.

lignin

The second most abundant constituent of wood, located principally in the secondary wall and the middle lamella, which is the thin cementing layer between wood cells.

line planting

Woody perennials in a linear arrangement adjacent to cropland or grassland.

linkage

The co-inheritance of two or more non-allelic genes due to their being located more or less closely on the same chromosome

livestock

Domestic or farmed animals raised for food and fiber such as hogs, sheep, cattle, and horses

Fumigants

These are volatile chemicais applied into confined spaces or into a soil which produce gas that destroys weed seeds and acts as a soil sterilant. The most common soil sterilants are methylne bromide, methane, allyl alcohol, carbon disulphide, chloroprin and tetrachlorocthane. They are packed in particular soild carries suitalble for direct soil application.

Gap Filling

Resowing or replanting or re transplanting in sown ,planted or transplanted field crops where gropping of plants found.

Germination:

Awakening of dormant embryo of seed.

Grains:

The fruit of large seesed grasses .Botanically a grain or kernel is fruit containing seed

Grass:

boanically any plant that is in� the family Gramineae