Soil Science Quiz 9

The lower limit of available water is called ________?

World biodiversity day is celebrated on:_________?

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

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

The salinity can be reduced by the application of___________________?

Which soil bolds more water ?

The zorawar is brand name of ___________________?

Organic soil are called________?

Wind transported materials if it is silt dominated is__________?

Tuff is__________________?

Secondary air pollution is _________?

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

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

How many different minerals deposits are found in Pakistan ?

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

Basalt is a __________ rock:

Which mineral contain phosphorus__________________?

Browning disease of rice is a_________?

The soil of Sindh (Pakistan) have pH__________?

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?

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

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?

Na and k can be determined by the use of________?

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

Principles of soil conservation does not include:

Which silica mineral is present in soil in abundant quantity________?

The evolution of new species is known as_____________?

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

The virus infecting bacteria is called:_________?

pF unit is used for the measurement of_________?

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

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

Microorganisms have C/N ratio of________?

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

What are diatoms?

Who will decompose organic matter first:

New soils, no or little profile development:

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

Father of agricultural chemistry is___________________?

The chemical formula of urea fertilizer is___________?

The albedo of the earth is:__________?

Rhizosphere is:

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

Percentage of N in Ammonium sulphate fertilizer is___________________?

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

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

Boron concentration is irrigation water is considered safe only upto_________________?

A and B horizon is called as_________?

Identify the fertilizer (s) containing potassium________?

Organic matter influences:_________?