Availability of Phosphorus is maximum at:__________?

Related Mcqs:

1. Phosphorus (P) is the second major nutrient essential for plant growth. With the exception of Nitrogen (N) and Potassium (K), Phosphorus is required by plants in_________?

   A. Lesser quantities
   B. Greater quantities
   C. Not required
   D. The above statement is wrong

   Submitted by: Shafiq Rehman

2. What is the effect of application of P2O5 fertilizer to a green manure leguminous crop in the availability of phosphorus to the succeeding crop?

   A. Green manure increases the availability in organic from to the next crop
   B. It does not affect the availability of phosphorous to succeeding crop 
   C. Greater amount of phosphorus is taken up and converted into organic form, which is released on decomposition of green matter
   D. It fixes the P2O5 through humus and reduces the availability..

   Submitted by: Shafiq Rehman

3. Phosphorus deficiency is widespread in most (_____%) 0f the soils of Pakistan.

   A. 54%
   B. 90%
   C. 68%
   D. 32%

   Submitted by: Shafiq Rehman

4. Availability of Zn is higher to crops in:_________?

   A. Acid soils 
   B. Sodic soils
   C. Saline-sodic soils
   D. Saline soils

   Submitted by: Shafiq Rehman

5. From the sources of plant nutrients availability in soil, which of the following statements are correct:

   A. The plant absorbs carbon as carbondioxides directly from the atmosphere.
   B. Water is the source of hydrogen
   C. Air & water is the source of oxygen & the chief source of soil nitrogen is organic matter & when organic matter decomposes it gives ammonia.
   D. All of the above

   Submitted by: Shafiq Rehman

6. In which form plant uptake phosphorus?

   A. H2po4
   B. HPO4-2
   C. Both
   D. Non of these

   Submitted by: gmsyed

7. In acidic soil which form of phosphorus uptake by plants?

   A. Primary orthophosphate
   B. Secondary orthophosphate
   C. Both
   D. None of these

   Submitted by: gmsyed

8. In alkaline soil which form of phosphorus uptake by plants?

   A. Primary orthophosphate
   B. Secondary orthophosphate
   C. both
   D. None of these

   Submitted by: gmsyed

9. Which mineral contains Phosphorus?

   A. Apatite
   B. Calcite
   C. Dolomite
   D. Gypsum

   Submitted by: Fahad Raza

10. The availability of essential nutrients from soil to the plants is controlled by the ________ properties of soil:

    A. Physical
    B. chemical
    C. Biological
    D. both A & B

    Submitted by: Shafiq Rehman