M.Sc. (Semester (CBCS) Examination Nov/Dec-2018
Agrochemicals and Pest Management
SOIL SCIENCE, FERTILIZERS, MICRONUTRIENTS AND PLANT GROWTH
REGULATORS
Time: 2½ Hours Max. Marks: 70
Instructions: All questions are compulsory.
Draw neat labeled diagram wherever necessary.
Figures to the right indicate full marks.
Q.1 Rewrite the sentences by choosing correct answer from given alternatives: 14
Which of the following statement is incorrect?
Auxins are the most important plant hormone.
Auxins are produced at the region of elongation
Indoleacetic Acid is a principal auxin
Auxins are also important in regulating the fall of leave and fruits
hormone is found in gaseous form.
Florigens Abscisic Acid
Ethylene Auxin
Product formed by mixing ammonium hydrate with 40% lime stone is called

Lime chalk Dolomite chalk
Nitro chalk Lime stone chalk
Gibberllic acid is found in
Avena sativa Gibberella fujikuori
Corn germ oil Micorhiza
Hydrogen ion concentration is increases in soil, causes
Active acidity Active alkalinity
Salinity None of these
The chemical composition of single super phosphate is
Ca (CH2PO4)2 H2O] Ca3 (PO4)2
[Ca(H2PO4)2 H2O] None of these
Interveinal chlorosis occurred due to
Ca Cu
K Mg
Cow pea (Vigna cajana) is an example of
Green manure Guano manure
Bulky organic manure Concentrated manure
Coconut milk contain type of growth hormone.
IAA GA
Cytokinin CCC
10) Chemical composition of bone meal is
Ca(PO4)2 CaF2
Ca3 (PO4)2 CaF2 CaHPO4
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SLR-VA-2
11) The root initiation is major role of
IBA 2-4 D
ABA 2-4 5D
12) Water holding capacity of soil is governed by
type of soil organic matter of soil
color of soil alkalinity of soil
13) Which one of the following is not micronutrient?
Zn CI
Mo P
14) Breaking of seed dormancy is made by the treatment of
Auxin Gibberellic acid
Cytokinin CCC
Q.2 Answer the following any four:-
1. Define the soil.
2. Enlist the phytohormons.
3. Define micronutrients
4. Define biofertilizers.
5. What is liquid manure?
08
Write Notes on any two
1. Organic matter in soil.
2. Role of potassium sulphate.
3. Role of ABA.
06
Q.3 Answer the following. (Any Two)
1. Write in brief manufacture of muriate of potash.
2. Deficiency symptoms of Mn MO.
3. Mass culture of rhizobium.
08
Answer the following. (Any One)
1. Describe the practical application of auxins.
2. Describe the properties and composition of soil.
06
Q.4 Answer the following. (Any Two)
1. Write in brief methods of application of organic manures to increase the
soil fertility.
2. Write in brief FYM.
3. Write in brief manufacture of sodium nitrate.
10
Answer the following. (Any One)
1. Position of fertilizers industries in India.
2. Biosynthesis of Auxin.
04
Q.5 Answer the following. (Any Two) 14
Describe the organic matter in soil and soil micronutrient.
What are the phosphate fertilizers? Write in brief triple super phosphate.
Describe the various methods of production of BGA.