Answer to Question #170075 in Chemistry for Shubhangam Sharma

Question

Soil samples were collected from different land use areas. When these samples were assessed, then the corresponding major contaminants were found as shown in the table,

Soil sample Major contaminants Land Use

А Metallic residues, Commercial

plastic, thermocol

B DDT, endosulfan, nitrates, Agriculture

animal manure, fertilizers

and biosolids (sewages sludge), urea

C Plastic, glass, human excreta, Residential

organic contaminants from

food, poultry farms

D Heavy metals like Industrial

mercury, cadmium

Based on the above table, suggest the possible soil management methods for the soil sample B and D; compare the soil sample A and D in terms of their potency to contaminate underground or surface water; and discuss the impact of contaminants in soil sample B on agricultural productivity and human health

Answer 1

In developing country like India, a marketable surplus of agriculture is the most important factor which 

influences the economic development of a country. To meet the demands of agriculture goods adequately 

and to feed the increasing population, the phenomenon of Green Revolution came into existence. Green 

Revolution, allowed developing countries like India to overcome continual food scarcity by producing 

more food and other agricultural products by using high-yielding varieties of seeds, modifying farm 

equipment, and substantially increasing use of chemical fertilizers. For an optimum production of 

agriculture produce and to feed the growing population, application of chemical fertilizers and pesticides 

has become necessary. Such type of agriculture practices allowed growth and sustainability of food grains 

but at the same time have the major impact on the environment and human health. This article provides 

a sketch of effects of chemical fertilizers and pesticides on human health and environment.

Demonstration of Incremental Sampling Methodology for Soil Containing Metallic Residues

In sample B

Soil pollution can have a number of harmful effects on ecosystems and human, plants and animal health. ... Soil pollution can also cause neuromuscular blockage as well as depression of the central nervous system, headaches, nausea, fatigue, eye irritation and skin rash.