List of top Physical Sciences Questions on Plant Nutrition

Trace elements that show affinity for sulphide minerals are called

The different pools of potassium in soils are
(A). Soil solution K
(B). Fixed K
(C). Exchangeable K
(D). Lattice K
Choose the correct answer from the options given below:

Element associated with urease activity

The characteristic of Saline-Alkali soil are

Elements associated with nitrogenase enzyme in biological nitrogen fixation
(A). Molybdenum
(B). Iron
(C). Copper
(D). Nickel

Choose the correct answer from the options given below:

Bone meal is a source of
(A). Ca
(B). N
(C). P
(D). Mo

Choose the correct answer from the options given below:

Mottle leaf of citrus is caused by the deficiency of

Stable compound formed during urea hydrolysis

The parameters of N use efficiency are
(A). Appaent N. recovery
(B). Agronomic efficiency
(C). Production efficiency
(D). Physiological N efficiency

Choose the correct answer from the options given below:

Arrange the following in increasing the amount of nitrogen in the fertilizers:
(A). Ammonium sulphate,
(B). Ammonium nitrate,
(C). Ammonium chloride,
(D). Calcium ammonium nitrate

Choose the correct answer from the options given below:

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).

Assertion (A) : Ammonium-based fertilisers are the major contributors to soil acidification.
Reason (R) : Especially the non-leachable nitrogen ions which have been taken up by plants contribute to the soil acidity.

In light of the above statements, choose the correct answer from the options given below.

Which of the following nutrient is related with deficiency symptoms like discoloration of leaf buds, breaking and dropping of buds?

According to Bray's Nutrient Mobility concept, which among following element is mobile in plants but immobile in soil?

Die back of citrus is due to deficiency of:

Boron regulates
(A).Ribosomal fraction
(B).Translocation of sugars
(C).Carbohydrate metabolism
(D).Calcium metabolism
Choose the correct answer from the options given below:

Given below are two statements:
Statement (I):High Cu in soil causes Fe chlorosis in citrus
Statement (II):Application of potassium increases Mn & Fe content in rice
In light of the above statements,choose the most appropriate answer from the options given below.

Given below are two statements:
Statement (I):Translocation of sugars is increased in K deficient plants
Statement (II):Potassium is taken by crops as chelates from the soil solution
In light of the above statements,choose the most appropriate answer from the options given below.

Growth factor necessary to produce yield that is 50% of the difference between maximum possible yield and yield before that unit was applied was given by ------
(A).Mitscherlich & Bray
(B).Mitscherlich & Baule
(C).Baule only
(D). Baule, Arnon & Bray
Choose the correct answer from the options given below:

The following are statements on fertilizer N use efficiency of crops. Which statement or the combinations are true?
(A) Partial factor productivity does not account for soil N-supply
(B) Agronomic efficiency requires data on soil N supply
(C) For soil N supply, the N-balance index is useful
(D) Soil N supply does not vary across soil types
Choose the correct answer from the options given below:

Given below are two statements:
Statement (I): Nitrogen is lost from waterlogged soils only by leaching
Statement (II): Waterlogged soils may develop iron toxicity to plants
In light of the above statements, choose the most appropriate answer from the options given below.

In highly acidic pH, the following nutrients are available in toxic amounts in soil:
(A). Fe
(B). Mg
(C). Mo
(D). Mn
Choose the correct answer from the options given below:

Which of the following purposes N - serve is used?

Match List-I with List-II

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Which of the nutrient element is luxury consumption?