Boron concentration is irrigation water is considered safe only upto_________________?

Related Mcqs:

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

   A. Mixed indicator B. Phenolpthalein C. Diphenyle D. Azomethine-H Submitted by: Shafiq Rehman...

2. The horizontal flow of water in irrigation channel or canal leading to water loss is called as:_________?

   A. Infiltration B. Percolation C. Seepage D. All of these Submitted by: Shafiq Rehman...

3. In tomato, Boron deficiency leads to:__________?

   A. Silvering B. Piffiness C. Cracking D. All of the above Submitted by: Mir Mehrbiyar...

4. The safe limit of No2 in drinking water is_____________________?

   A. 10 mg L-1 B. 15 mg L-1 C. 20 mg L-1 D. None of the above...

5. The EC: SAR and RSC values suggested by WAPDA for 3rd class irrigation water(C,S,R,) are____________________?

   A. ECi:<1.5, SAR < 10 & RSC< 2.5 B. ECi:>1.5, SAR > 10 & RSC> 2.5 C. ECi:>1.5, SAR 2.5 D. Both a & b...

6. An atmosphere with reduced concentration of O2 and increased concentration of CO2 is called_______________?

   A. Refrigeration B. Oxidation C. Humidity control D. Controlled atmosphere...

7. The depth of irrigation water required for the full crop period is called_________?

   A. Delta of water  B. Water required C. Crop water required D. None of these Submitted by: Mukhtir Ali jan...

8. What is the concentration of pure water?

   A. 55.5 mol/L B. 45.5 mol/L C. Both a and b D. none of these Submitted by: Shafiq Rehman...

9. Which method of irrigation is possible under the economical conditions of Pakistan __________________?

   A. Canal system B. Modified basin system C. Drip irrigation D. All the above...

10. Sprinkler irrigation is suitable, where soil has:_________?

    A. Clayey texture B. Undulating topography C. Loamy texture D. All of these  Submitted by: Shafiq Rehman...