A Demonstration Centers
A Demonstration Centers
These provide effective communication about improved methods of farm practices to the farmers by practical displays.
A Line
A Line
This is a male sterile parent used for production of hybrid seeds as in case of maize,
A Chromosome
A Chromosome
Normal members of chromosome complement of a species which are essential for normal growth and development.
Abiogenesis
Abiogenesis
The Concept of the living from non-living matter.
Abiotic
Abiotic
Disease not due to any microorganism, but due to abiotic factors also known as physiological or non-pathological disease.
Abnormal Seedlings
Abnormal Seedlings
It refers to those seedlings which fail to develop into healthy and normal plants even after providing all the ideal conditions needed for growth and development of plants.
Aboricide
Abiotic
A chemical used for killing shrubs of bushes or trees (Silvicide).
Accelerated Erosion
Accelerated Erosion
Erosion much more rapid than normal, natural, geological erosion, primarily as a result of the activities of humans or, in some cases, of animals.
Acervulus
Acervulus
A small, dry, thin-walled fruit that does not split open when ripe, e.g.: dandelion.
Acid Cations
Acid Cations
Cations, principally and that contribute to ion activity either directly or through hydrolysis reactions with water.
Acid Equivalent (ae)
Acid Equivalent (ae)
The theoretical yield of parent acid from an active ingredient in acid-based herbicides.
Acid Rain
Acid Rain
Atmospheric precipitation with pH values less than about 5.6, the acidity being due to inorganic acids such as nitric and sulphuric that is formed when oxides of nitrogen and sulphur and emitted into the atmosphere.
Acid Saturation
Acid Saturation
The proportion or percentage of a cation-exchange site occupied by acid cations.
Acid forming Fertilizers
Acid forming Fertilizers
Those commercial fertilizers which have an acidic effect on soil ammonium sulphate, urea etc. are said to be acid-forming fertilizers.
Acid soils
Acid soils
Soil having an acidic reaction of pH below 7 due to leaching of soluble salts from the soil are called as acidic soil.
Acidity residual
Acidity residual
Soil acidity can be neutralized by lime or other alkaline materials but can not be replaced by an unbuffered salt solution.