SSAC-353 Objective Questions, BSc Agri Study

SSAC-353 Objective Questions

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In this post, you will get the Objective questions of SSAC-353 Manures, Fertilizers and Soil Fertility
Management. These questions are provided along with along with their answers. It will be very helpful for the Final Semester Theory Examination. These questions are gathered here from the previous year question papers.

SSAC-353 Objectives

Year 2014-15

Do as Directed

  1. Name one edible and non edible oil cakes.
    Ans: edible-groundnut cake(7-8%N),non-edible-safflower.
  2. Give two examples of fungicides.
    Ans: mancozeb, captain, sulphur.
  3. state one example of herbicide.
    Ans: glyphosate, paraquat
  4. example of amide fertilizer
    Ans: Urea
  5. what are the C:N ratio of soil & sawdust.
    Ans: soil(10:1-12:1),sawdust(400:1)
  6. earthworm spp used for vermicomposting.
    Ans: Eisenia fetida, Lumbricus rubella.
  7. examples of chelates
    Ans: EDTA, DTPA

Define the following:

  • Poudrette : A fertilizer made from dried night soil mixed with other substance, as gypsum and charcoal.
  • Compost -the decomposed organic matter made from decomposition of wastes.
  • Herbicides – a chemical used to kill or control weeds.
  • Denitrification – formation and loss of gaseous form of nitrogen by biological reduction of nitrate and nitrite are known as denitrification.
  • Acaricide – a chemical used to kill mites and ticks.
  • Vermicompost – compost prepared with the help of earthworms is called vermicompost.

Year 2015-16

Match the pairs:

  1. Blood meal = conc. organic matter
  2. Green leaf manuring= glyricidia
  3. Defoliants = Sodium chlorate
  4. Schoenite = marine salt
  5. Chlorinated hydrocarbon = methyl bromide.
  6. This bacillus = Sulphur oxidising microorganism
  7. Nematicid = Aldrin
  8. Attractant = Muscalure.

Fill in the blanks.

  1. C:N ratio of sawdust is 400:1
  2. During anaerobic decomposition of cowdung slurry methane gas is evolved.
  3. The clear liquid that escapes from settling of sludge is known as sewage water.
  4. Lime induced chlorosis in field crop is due to deficiency of Zn micronutrient.
  5. Ammonium molybdate contains 54% of Mo.
  6. Azolla is a living floating association of aquatic fern and algae which fixes atm nitrogen in submerged soil.
  7. Carbaryl is classified as carbamate insecticide.
  8. Organophosphate insecticide affect the chollinsterase enzyme present in synapse.

Year 2013-14

Match the pairs.

  1. Bone meal = 22% P205
  2. Quinone = paraquat
  3. Ammonium phosphate = 52% P205
  4. Vapam = Dithiocarbamate
  5. Gibbreline = Gibbane structure
  6. Waxes = undecomposed organic matter
  7. Thiodan = Endosulphon
  8. Sawdust = 400:1

Define the following.

  1. Rodenticide – chemical substance used to kill rats and mice is called as rodenticide.
  2. Molluscicide – chemical substance used to kill snails and slugs.
  3. Sludge – semi-solid residue from industrial processes and treatment of sewage and wastewater.
  4. Sewage – sewage is a waste water from homes and factories, which flow away through sewers.
  5. Defoliants – a chemical used to drop off leaves from tree pre-maturely.
  6. Green manuring crops – are the crops whose green undecomposed material is used as manure.

Year 2012-13

Do as directed.

  1. Name two green manuring in-situ crops.
    Ans: sunhemp, Dhaincha.
  2. State two examples of hygroscopic fertilizers.
    Ans: Ammonium nitrate, Calcium Ammonium nitrate.
  3. State two examples of carbamate.
  4. Ans: Carbaryl, Carbofuron.
  5. C:N ratio of microorganisms.
  6. Ans: 4:1-9:1

Define:

  1. Fungicides – a chemical used to kill the fungus or inhibits it’s growth.
  2. Ammonification: the formation of ammonia or its compounds from nitrogenous compounds, especially as a result of bacterial action.
  3. Inhibitors: a substance that reduces or suppresses the activity of another substances.

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