Soil Science - Study Mode

[#321] Fertilizer Statistics & Fertilizer News are published by
Correct Answer

(A) Fertilizer Assoiciation of India

Explanation

Solution: Fertilizer Statistics and Fertilizer news are published by the Fertilizer Association of India (FAI) . FAI is a non-profit and non-trading company established in 1955 to bring together all parties concerned with the production, marketing, and use of fertilizers. It represents mainly the fertilizer manufactures, distributors, importers, equipment manufacturers, research institutes and suppliers of inputs.

[#322] Sulfur Column is related with which scientist?
Correct Answer

(A) Winogradsky

Explanation

Solution: The sulfur column is related to Winogradsky . It was invented in the 1880s by Sergei Winogradsky. The Winogradsky column is a simple device for culturing a large diversity of microorganisms. This device is a column of pond mud and water mixed with a carbon source such as newspaper, blackened marshmallows, or egg shells and a Sulphur source such as gypsum or egg yolk.

[#323] The particle size of clay soil is
Correct Answer

(D) Less than 0.002 mm

Explanation

Solution: Soil texture is determined by the relative proportion of the three kinds of soil mineral particles, called soil separates i.e. sand, silt and clay. These particles determine the properties like porosity, permeability, infiltration, shrink-swell rate, water holding capacity and susceptibility to erosion. Sand is the largest particle of the soil whereas clay is the finest one. The particle size of clay soil is less than 0.002 mm.

[#324] Pedology considers soil as a
Correct Answer

(A) Natural body

Explanation

Solution: Pedology is a discipline within soil science that focuses on understanding and characterizing soil formation, evolution and theoretical frameworks for modeling soil bodies, in the context of the natural environment. Pedology considers soil as a natural body . Soil not only supports vegetation but also acts as the locus of numerous interactions between climate, soil life, mineral elements, etc.

[#325] Chemical formula of single superphosphate is
Correct Answer

(A) Ca(H 2 PO 4 )

Explanation

Solution: SSP (Single super phosphate) is a widely used phosphatic fertilizer. It contains three essential plant nutrients i.e. phosphorus, Sulphur and Calcium along with traces of other micronutrients. Its chemical formula is Ca(H 2 PO 4 ) . It is preferred for oilseed crops as sulphur is an integral part of many edible oils.