The percentage of calcium content in single superphosphate?

Related Mcqs:

1. calcium is immobile in plants. Therefore, under conditions of deficiency, young tissue is affected first. calcium deficiency symptoms are:

   A. Death of terminal buds; roots tips also affected
   B. Abnormal dark green appearance of foliage
   C. Premature shedding of  blossoms & buds & weakened stem
   D. All of the above

   Submitted by: Shafiq-ur-Rehman

2. The available form of calcium to plant is________________?

   A. Ca(free cation
   B. CaO
   C. Ca
   D. None of the above

3. Product of microorganism that appears to chelate calcium is called_____________________?

   A. Pyruive acid
   B. 2-ketoghconic acid
   C. Carbon dioxide
   D. Phospheric acid

4. The moisture content below which a cohesive soil does stick to metal tools is known as______________________?

   A. Liquid limit
   B. Plastic limit
   C. Sticky limit
   D. Alter berg limit

5. Organic P content in soil, by ignition method is estimated by igniting the soil at ____________________?

   A. 250ºC
   B. 1000ºC
   C. 550ºC
   D. 1250ºC

6. According to FCO, the maximum permissible total N content in the form of urea in DAP should be:_________?

   A. 2.50 %
   B. 3.50 %
   C. 4,50 %
   D. 5.5 %

   Submitted by: Shafiq Rehman

7. Although some acid soils do exist in the northern mountainous regions of Pakistan (Mansehra, Sawat, Dir). Almost all cultivated soils of the country are ________________, with high base saturation and low organic matter content (generally less than 1%)?

   A. Alkaline
   B. Very much acidic
   C. Calcareous
   D. both A & C

   Submitted by: Shafiq Rehman

8. Walkley and blacks method of organic matter determination allows recovery of ______ ℅ organic carbon content:

   A. 44 ℅
   B. 45 ℅
   C. 33℅
   D. None of the above

   Submitted by: Shafiq Rehman

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

   A. 74 %
   B. 54 %
   C. 62.5 %
   D. 34%

   Submitted by: Shafiq Rehman

10. The forest soils have lower bulk density than agricultural soils because of their ______ content.

    A. High organic matter
    B. Low organic matter
    C. Both a & b
    D. None of these

    Submitted by: Adnan