Primary sludge is used for</h2></div>

Which of the following symbiotic association is useful as biofertilizer?<br> </h2></div>

<span>How do bacteria and cyanobacteria increase soil fertility? Explain.</span></h2></div…

What does gobar gas produced from animal and plant waste contain?</h2></div>

A common biocontrol agent for the control of plant disease is</h2></div>

Write the difference between manure and biofertilizers.</h2></div>

Benzo-diazepene is an?</h2></div>

Which of the following is a function of pectinases?