Consider the following statements about organic farming
$I.$ Organic farming promotes the use of crop rotations and cover crops and encourages balanced host/predator relationships
$II.$ Integrated pest and weed management and soil conservation systems are valuable tools on an organic farm
$III.$ Organic farming protects the environment, minimize soil degradation and erosion and decrease pollution
Which of the statements given above are correct?
$I, II$ and $III$
$I$ and $II$
$I$ and $III$
$II$ and $III$
Mycorrhiza is a symbiotic association between
Match the columns :
Column - $I$ | Column - $II$ |
$(a)$ Mycrrohiza | $(1)$ Rhizobium |
$(b)$ Bt | $(2)$ Nucleopolyhydro virus |
$(c)$ Root nodules | $(3)$ Phosphorus |
$(d)$ Baculo virus | $(4)$ Bt -Cotton |
Root nodules for nitrogen fixation of a non-leguminous tree possess
Organic forming is the technique of raising crops through use of
The symbiotic association of fungi with plants is known as ____which is formed by many members of the fungal genus_____.