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Soil Science Quiz 9

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Soil Science Quiz 9

1 / 50

The albedo of the earth is:__________?

2 / 50

Which silica mineral is present in soil in abundant quantity________?

3 / 50

Conservation agriculture improves the water use efficiency of dryland systems. It has components:

4 / 50

The soil of Sindh (Pakistan) have pH__________?

5 / 50

Basalt is a __________ rock:

6 / 50

Secondary air pollution is _________?

7 / 50

Identify the fertilizer (s) containing potassium________?

8 / 50

Who will decompose organic matter first:

9 / 50

The indicator used for estimation of the soil available boron is_______?

10 / 50

Organic soil are called________?

11 / 50

New soils, no or little profile development:

12 / 50

The practice of managing rows of closely planted woody plants with annual crops planted in alleys in between hedges is called as:________?

13 / 50

The evolution of new species is known as_____________?

14 / 50

pF unit is used for the measurement of_________?

15 / 50

From the point of view of crop production, Soil testing refers to______________?

16 / 50

Percentage of N in Ammonium sulphate fertilizer is___________________?

17 / 50

Organic matter influences:_________?

18 / 50

Boron concentration is irrigation water is considered safe only upto_________________?

19 / 50

Microorganisms have C/N ratio of________?

20 / 50

Which of the following techniques is/are used for the soil fertility evaluation?

21 / 50

Browning disease of rice is a_________?

22 / 50

Which soil bolds more water ?

23 / 50

Radiation can be detected by the blankening of photographic film or by using___________________?

24 / 50

Father of agricultural chemistry is___________________?

25 / 50

Na and k can be determined by the use of________?

26 / 50

Tuff is__________________?

27 / 50

Which of the following is not the soil order prevail in Pakistan?

28 / 50

Which mineral contain phosphorus__________________?

29 / 50

The lower limit of available water is called ________?

30 / 50

The zorawar is brand name of ___________________?

31 / 50

According to a latest research, Pakistan is predominantly a dryland country; 80% of its land area is arid and semi arid, 12% sub-humid and 8% under humid climate. Thus , soils of arid & semi-arid regions are vulnerable to a wide range of degradation process. As the case in arid and semi-arid climates elsewhere in south-central/southern Asia and Sub-Saharan Africa; _________________ are among the major causes of soil degradation and desertification?

32 / 50

Wind transported materials if it is silt dominated is__________?

33 / 50

A and B horizon is called as_________?

34 / 50

The salinity can be reduced by the application of___________________?

35 / 50

The major soil fertility problems in Pakistani soils deficiencies of N, P and Zn. Deficiencies K, Fe, and B also occur in specific crop genotypes or soil types, while deficiencies of S, Cu, and Mn are negligible. however, the common nutrient deficiencies are_________________: and some micronutrients including Mo?

36 / 50

Rhizosphere is:

37 / 50

Principles of soil conservation does not include:

38 / 50

An expression of the intensity of the basic or a acidic condition of a liquid or of soil is called_________?

39 / 50

What are diatoms?

40 / 50

The chemical formula of urea fertilizer is___________?

41 / 50

Walkley and Blacks method of organic matter determination allows recovery of _____% organic carbon content:

42 / 50

Part of soil which is in contact with root surface is called___________________?

43 / 50

BGA was discovered as a nitrogen fixer in paddy field by ?

44 / 50

Solution containing molecular weight of a substance in gram per liter of a solution is known as__________?

45 / 50

The unit of a scale used to measure the level of acidity or alkalinity of chemicals is called:

46 / 50

Most common rocks, after exposed to weathering which cover about ______% 0f the earth:

47 / 50

World biodiversity day is celebrated on:_________?

48 / 50

The virus infecting bacteria is called:_________?

49 / 50

How many different minerals deposits are found in Pakistan ?

50 / 50

The soil air contains a number of gases ______________ & water vapours:

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