A Resource Hub For Young Agriculturists
Importance of evaluation in programme planning The process of evolution has a direct bearing on good program buildings and program execution. According to Kelsey and Hearne (1949), it makes the …
Steps and Purposes of Evaluation Steps of Evaluation The various steps involved in an extension programme evaluative process maybe as follows 1. Identification of program goals and objectives:The …
Definition, Importance of Monitoring and Evaluation, and Types and Principles of evaluation Definition of Monitoring Monitoring can be defined as the continuous or periodic surveillance of program activities …
Ion Uptake Mechanism (Contact exchange theory, CO2 exchange theory) Ion Uptake Theory Scientists have postulated many theories about adsorption of ions, among them following 2 are most important 1. Contact exchange theory. 2. CO2 exchange theory. 1. Contact exchange theory Contact exchange theory In 1951 aenni and his associates develop this theory. This is a process of direct ion exchange between root cells and soil colloids. They observe that cations of soil colloids are generally moving around their own shell and similarly H+ ions of root surface are also moving around their own shell. In this process, once upon a time when two shells are come in contact closely they overlap each other. Then the ions of these two shells, exchange each other. Result by, H+ ions are replaced by other cations. H+ [Root] + K+ [Clay] → K+ [Root] + H+ [Clay]. 2. CO2 …
Ion uptake and Transport Mechanism Ion uptake mechanism Mechanism: Ion uptake mechanism is a two way processes Step 1: The first step of the ion uptake by the …
Definition, properties, and classification of colloids are given below. Definition of Colloids Graham was the first man who introduced the term colloids in 1849. A Colloid may be defined as …
Symbiosis vs Non symbiosis Difference between symbiosis and non symbiosis Symbiosis Non-symbiosis The Biochemical reduction of atmospheric inert dry nitrogen carried out by an association of two dissimilar organism living intimately to the soil and water. This process is called symbiosis. The Biochemical reduction of atmospheric inert dry nitrogen carried out by an individual organism living freely soil and water. This process called Nonsymbiosis. Two organism are responsible. One organism is responsible. It is impossible without 2 organism are living together. It is possible to …
Legume Rhizobium symbiosis Process Establishment of Legume-Rhizobium symbiosis involves 2 way transfer of information to the legume root and from legume roots to the Rhizobium. · Symbiosis begins with …
Concept of Biological Nitrogen Fixation (BNF) and its Reaction, and Classification Concept of Biological Nitrogen Fixation (BNF) Biochemical reduction of atmospheric inert N2 by certain microorganism with the help …
Definition of Crop Reporting Crop reporting is the description of the crop in the growing stage, mentioning the present condition involving yield status and pest management with comments for …