An economic threshold (ET) is defined as: ‘the pest population likely to cause damage equal in value to the cost of control (pesticide plus application).’ Such a population is known as the ‘critical’ or ‘break even’ population. It is always lower than economic injury level.
Which one of the following is aerobic asymbiotic N â‚‚ -fixing bacteria?
Aflatoxins is produced by
The cytoskeleton of an animal cell is made up of:
Which of the following is a physical change?
It is the yield of marketable crop produced per unit of water used in evapotranspiration -
It is also known as Chinese layering, Pot layering, Marcottage or Gootee-
Wetlands are vital ecosystems which sustain biological diversity. The government will promote their unique conservation values through……………â€...
Cotyledon remains in the soil and plumule grows or is pushed upward by the elongation of epicotyl. This type of germination is called____Â
The hydraulic brakes used in automobiles is a direct application of :
An important catalyst in the conception of the Codex Alimentarius Commission is: