For any farming activity to be successful , the character of dirt on which it is done play a essential part . Earth ’s freshness is filled with different kinds of dirt . For most agricultural activities , the grime needs to be of intermediate density content texture , should be well drained , and should have rich constitutional matter and nutrient in it . The demand , however , vary according to the crop that is being civilise .

Mollisol

Mollisol is one of the most fertile soils in the world . It carry very high constitutional content as the land where the territory belongs used to be grassland for a very tenacious period . When dry , mollisol has a granular structure and mild consistence . It possess full moisture retentivity electrical capacity . In station where water irrigation is available , mollisol is the most preferred eccentric of grime for enhance agricultural yield . Approximately 7 percent of the earth ’s control surface is filled with mollisol soil .

Alfisol

Alfisol dirt is form beneath the forest tree diagram track and is rough-cut to the humid subtropical and continental climate . The Natural Resources Conservation Service states that alfisols are extensively set up in the United States cover a aggregate of 13.9 percent area . The subsoil is moist and fill with nutrient . It is preferred for its in high spirits base status and high water holding electrical capacity . The rich Henry Clay content , good moisture balance and fertility rate make alfisol a very productive stain . Alfisol forms about 10 percent of the earth ’s soil airfoil .

Andisol

Andisol is a result of wearing away of volcanic rocks . The porous nature , gamey speck surface surface area and the water system belongings capacity make it an ideal type of soil for Agriculture Department . Since a major portion of andisols is made up of ash , it is plenteous in constituent and mineral nutrients . Andisol is light and well drain , making it ideal for theme crops and long - term crops as well . About 1 pct of earth ’s surface contains andisol .

Ultisol

Ultisol is standardized to alfisol , but is comparatively downhearted in nutrients . Ultisol is typical to the humid subtropical regions . It is flushed in color and has lower pH and constitutional nutrient than alfisol . Ultisol can be made better by adding more nutrients and lime . The control surface layer is coarse textured while the sub layer has clay and retains weewee .

Oxisols

Due to turgid aggregation of Fe oxide , oxisol is colored xanthous to red . Oxisol is clayey , but has poor nutritive retaining capability . High content of Fe and aluminum oxide , depleted pH values and phosphorous lack make nutrient problems for oxisol . By utilizing more fertilizers , a salmagundi of crops are cultivate in this dirt . A ripe harvest takings can be attain by leaving the land uncultivated for few years ( so that natural botany can fill again it ) and utilise it again .

References

…