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determine the structural units of silicate claysthe tetrahedral and octahedral sheets are the fundamental structural units of silicate clays they
surfaces of colloidal fractions of clay mineralsthe surfaces of colloidal fractions of clay minerals and humus are responsible for the cation and
determine about the soil humusthe organic constituents organic colloids are due to mainly the plants and partly the animals they form only a
what is clay mineralsthe fraction of secondary minerals is often mixed with primary minerals and oxides of iron aluminium and silicon and has a size
determine about the physico-chemical parametersthe possible combination of various elements found in the earths crust gives rise to a large number of
explain the cultural practices of single cropcontinuous cultivation of a single crop over years on the same site causes accumulation of a particular
what is soil aggregation and explain its beneficial rolesome organisms may play a beneficial role indirectly by creating better soil physical
explain about the biofertilizersbiofertilizers are the cultures of microorganisms used for inoculating seed or soil or both under ideal conditions to
beneficial role of soil organisms the soil organisms play a significant role in the life cycles of plant and animals through decomposition synthesis
explain in detail about the virusesviruses are the ultramicroscopic parasites which always require a living h ost for their multiplication since they
nematodesthese are next to protozoa and are the abundant soil microfauna in soil they are also called eelworms thread worms or
define the term - soil protozoathese are unicellular but larger than bacteria the size varying from a few microns to a few centimeters the protozoa
explain the term - ants ants are the most widespread species of insects in soil and consume plant residues but are more active in humifying
describe about the molesmolehills frequently observed in some fields are composed of subsoil deposited by moles they need a good reserve of
enumerate in brief about the earthwormsthere are several species of earthworms having slender cylindrical bodies with varying diameters these
discuss about the soil fauna the soil fauna inhabiting the soil are active partners of the soil flora in the decomposition of plant tissues when
enumerate the role of soil algae on soil florasoil algae are microscopic chlorophyll containing organisms being the simplest chlorophyllous plants
state in brief about the fungi it is heterotrophic plants larger than the bacteria those that live on the dead tissues of organic substances are
determine about the term actinomycetes - soil florait have characteristics which are transitional between bacteria and fungi and are sometimes called
define the role of bacteria in soil florathe most abundant soil organisms are primitive very minute unicellular organisms devoid of chlorophyll
define the term - soil florahigher plants are by and large the most important group of primary producer organisms in the whole soil the continuous
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state the important role of microorganismsthe important role of microorganisms was recognised as early as 1838 when jb boussingeutt a french
describe the biological parameters of living organismsbiological parameters which include living organisms constitute an important component of