Agriculture · all questions

Soil Science
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Q901

Match the following columns:

Column I (Rhizobium sp.)	Column II (Crops)
a. R. lupini	1. Lupine group
b. R. trifoli	2. Clover group
c. R. japonicum	3. Soybean
d. R. meliloti	4. Alfa-alfa

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Q902

Urea contains . . . . . . . . nitrogen

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Q903

Effective particle diameter for Ion exchange is

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Q904

Amino acids produced during Photorespiration is

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Q905

Which of the following condition is suitable for denitrification?

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Q906

From top 25% of effective root zone depth how much quantity of total water extraction take place by roots

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Q907

Aromaticity is highest in

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Q908

Wind blown materials, comprised primarily of silt with some fine sand and clay, are called

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Q909

Area (Mha) under physical degradation (water logged) in india is

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Q910

Match the following columns:

Column I (Available nutrients)	Column II (Extractant)
a. Boron	1. 0.15% CaCl₂ Solution
b. Nitrogen	2. Hot water
c. Sulpher	3. Alkaline KMNO₄

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Q911

An alkali soil must have pH value of

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Q912

The cation exchange capacity is highest of

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Q913

The extent of Zn-deficient soils is approximately

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Q914

pH of Calcareous Soil is generally

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Q915

If fertiliser prices go up the optimum close should

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Q916

Olsen's method, which is used for phosphorus detection method used in soil is

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Q917

Chemical (Grigg & Tamn reagent) used for extraction of Mo is

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Q918

In Minimum thermometer, material used is

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Q919

Gypsum block can measure water potential up to

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Q920

The mineral chlorite has an extra layer of

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