Agri-MCQs #2: Applied Conservation Agronomy

Top Multiple Choice Questions (MCQs) for Applied Conservation Agronomy.

Note: The answer with an “o” is the correct one.

1.         pH of saline soils is usually _____________.

            a. less than 10                            b. more than 8.5

            c. more than 10                       d. less than 8.5

2.         Exchangeable sodium percentage for saline soils is _____________.

            a. equal to 15                           b. less than 15

            c. less than 18                            d. more than 15

3.         EC for alkali soils is less than ___________ mmhos/cm.

         a. 4                                         b. 6

            c. 8                                          d. 10   

4.         If salinity is upto _______EC mmhos/cm its effects mostly negligible.

            a. 8                                          b. 2

            c. 16                                           d. 18

5.         Most salt tolerant grass is _________.

               a. para grass                         b.. giant star grass

            c. kallar grass                      d. dab grass                            

6.         Most salt tolerant fodder is ___________.

               a. berseem                                  b. oats

               c. lucerne                                 d. senji

7.         Among the following the most salt tolerant crop is _____________.

            a. maize                                   b. barley

            c, beans                                     d. cotton

8.         Soluble salts are less than 0.2% in _____________.

                a. saline soil                                  b. saline sodic soil

               c. sodic soil                                   d. water logged soil

9.         Saline sodic/sodic soils can be reclaimed by using.

                a. MgSO4.2H2O                            b. CaSO4.2H2O     

               c. BaSO4.2H2O                                d. K2SO4.2H2O       

10.       CO3 and HCO3 are absent in soils.

             o  a. saline                                           b. saline sodic

                c.sodic                                             d. water logged

11.       Which one is not the cause of water logging.

            a. rainfall                                                b. flooding by rivers

            c. defecting system of canals              d. sowing time

12.       Soil salinity can cause “TIRAK” in _______ crop.

            a. cotton                                          b. rice

                c. sugarcane                                     d. maize

13.       Cereals grown on saline cultures show _________ colour in the leaves when plant. approach maturity.

                a. blacking                                       b. yellowish

            c. reddish                                        d. greenish

14.       Which one is not the method to remove excess salts from the surface of the soil?

            a. flushing                                           b. scrapping

            c. leaching                                           d. evalaunching

15.       Which one is not the method for eradication of water logging?

            a. lining of canals                                    b. planting trees

            c. drainage                                           d. use of press mud

16.       Which one is not the local name of white alkali soils?

            a. kallar                                                    b. thur

            c. shor                                                  d. crust

17.       One cusec is equal to _______ gallons.

            a. 12.24                                               b. 6.24

            c. 10.24                                                              d. 8.24

18.       The top soil layer of _______ cm is considered the principle feeding zone of most of agricultural crops.

            a. 12.5 to 22.5                                             b. 25.5 to 35.5

               c.  40.5 to 50.5                                             d. 50.5 to 60.5

19.       The strips laid along the contour at right angles to the natural direction of the slope is called ________.

            a. wind strip cropping                                        b. buffer strip cropping       

            c. field strip cropping                                      d. contour strip cropping                

20.       The soils having organic matter more than 50% are called _____.

            a. muck soils                                                   b. peat soil

            c. colluvial soils                                                 d. glacial soils

21.       Which one is used to raise pH and correct acidity of the soil?

            a. magnesia                                                         b. lye

            c. ammonia                                                      d. lime        

22.       The process of removing excess soluble salts or excess exchangeable sodium from soils is called ______.

               a. fertilization                                               b. scarification

            c. reclaimation                                             d. starification

23.       Low infiltration in fine textured soils results in _________.

            a. water erosion                                           b. wind erosion

               c. both a & b                                                d. glacier erosion

24.       In soils _________ acts as commenting agent.

               a. organic matter and nitrogen                     b. organic matter and phosphorus

            c. organic matter and Ca                             d. organic matter and S

25.       Barani area counts for ______% of total area in Punjab.

            a. 10%                                                             b. 20%

            c. 30%                                                                d. 40%

26.       Final condition of soil after tillage have been performed is called ______.

            a. primary tillage                                                b. zero tillage

            c. minimum tillage                                          d. tilth

27.       The soil particle with ________ mm diameter move by suspension.

            a. > 0.005                                                        b. <0.05

            c. < 0.5                                                               d. < 5

28.       The particles with 0.05 to 0.5 mm in diameter move by _______.

               a. suspension                                                b. surface creep

            c. saltation                                                   d. none of them

29.       The particles larger than 1 mm diameter __________.

            a. move by suspension                                       b. surface creep

            c. saltation                                                       d. do not move by wind

30.       Which one is not a type of soil movement by wind?

            a. suspension                                                   b. splash

            c. saltation                                                          d. surface creep

31.       The velocity necessary to start the first particle moving is called ______.

            a. fluid threshold velocity                           b.  impact threshold velocity              

               c. economic threshold velocity                    d. none of them          

32.       Clean tilled crops _________ erosion.

               a. protect                                                      b. retard

            c. encourage                                         d. do not affect           

33.       Organic contents of soil can be increased by growing _______.

               a. clean tilled crops                                      b. close growing crops

            c. leguminous crop                                      d. no crop

34.       Application of agronomic principles to the solution of soil and water management is called _______.

            a. soil and water conservation                         b. conservation  Agronomy

            c. agronomic conservation                                 d. none of them

35.       The surface area of _______ soils particles is high.

            a. fine                                                          b. coarse

               c. medium                                                    d. both a & b

36.       There are _____ link canals in Pakistan.

               a. 7                                                               b. 8

            c. 9                                                              d. 10

37.       Downwards movement of water within soil is called _______.

               a. seepage                                         b. infiltration

            c.  percolation                                  d. absorption

38.       Which one is not a practice of controlling water erosion?

            a. terracing                                                         b. contouring

            c. leveling                                                        d. wind breaks

39.       ________ is mechanical manipulation of soil to provide soil condition suitable for crop growth..

            a. tilth                                                              b. tillage     

            c. mulching                                                         d. both a & b

40.       The objective of tillage is to:

            a. breaking of hard pan                                      b. controlling weeds

            c. separate diseased seeds                               d. both b & c

41.       Which one is example of natural mulch

            a. cultivation                                               b. crop residues

               c. organic manure                                         d. both a & b

42.       The soils containing more clay particles are _________ to water erosion.

            a. more susceptible                                          b. less susceptible

            c. none of them                                                  d. both a & b

43.       Which one is not a type of water erosion?

            a. sheet erosion                                                   b. gully erosion

            c. rill erosion                                                   d. run off

44.       Soil texture refers to:

            a. arrangement of soil particles                   b. relative proportion of soil particles

            c. organic contents of soil                               d. none of them

45.       Which one is form of wind erosion?

a. extrusion                                                         b. abrasion

c. suspension                                                   d. both a & b

46.       ___________  =         ( % sand + % silt) / % clay

            a. index of erodibility                                  b. index of texture

               c. index of fertility                                       d. index of productivity

47.       Which one is not a practice of water conservation?

            a. mulching                                                      b. fallowing

            c. contouring                                                      d. terracing

 

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