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Nitrogen fixation by Rhizobium is increased in the presence of :
Most herbicide interfere with :
Pests resistant to insecticides have :
A widely cultivated rice variety which has solved food problem in Asia and has been developed by IRRI Manila (Philippines)
Secondary home (Centre of production) of coffee is
Which of the following is the cyanobacterial group acting as biofertilizer ?
Which pesticide is lipophilic ?
In a gene bank, genetic material is stored in the form of :
Which of the following is a weedicide?
The aquatic Fern, which is an excellent biofertilizer is :
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