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state the harmul effects of acidity of soil acidity of soil may have harmful effects on plants due to the effect on enzymatic changes reduced
what are the advantages of acid soils the acid soils formed by any of the above processes behave as very strong acids so much so that ph is quite low
state the process of formation of acid soilsthe soil acidity is mainly caused by hydrogen and aluminium ions depending upon the degree of existing
determine how ion exchange data is helpfulthe ion exchange data is helpful middot in soil management middot indicating nutrient
illustrate the physical and chemical properties of soilthe cation exchange property is very significant because it affects the physical and chemical
what is cecthe cec of most soils increases with ph below ph 60 the charge for clay mineral is relatively constant while above ph 60 the charge on the
ion exchange property of soilsion exchange is a reversible process soil has capacity to exchange its ions due to its colloidal property the water
determine about the silicate claysthe silicate clays develop charges because of an imbalance which takes place due to an exchange of one cation by
determine the architectural units of silicates this common architectural unit sio44- of silicates is of remarkable stability the different silicates
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