The toxicity level of Zn (mg/kg) in plants suggested by some workers is___________________?

Related Mcqs:

1. The deficient level of N (%) in plants suggested by various workers is____________________?

   A. 0%
   B. 3%
   C. 5%
   D. 10%

2. After self pollination of red flowered plants out of 40 plants of progeny were white flowered. this indicates that the plants are__________________?

   A. Heterogeneous
   B. Heterozygous
   C. Homogenous
   D. Homozygous

3. Urea Toxicity is also called ______________________?

   A. NH3 Toxicity
   B. Urine Toxicity
   C. Blood Toxicity
   D. None of above

4. The dominance of acidity creates toxicity?

   A. Mo
   B. Al
   C. Zn
   D. Mg

   Submitted by: Mir Mehrbiyar

5. Previously Essential nutrients required for the growth of plants were sixteen. In recent time the essential nutrients required for the growth of plants are:_________?

   A. 16
   B. 17
   C. 18
   D. None of the above

   Submitted by: Shafiq Rehman

6. 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

7. Generally speaking, only level to nearly level (0-2 % slope) & gently sloping lands (2-5 % slope) should be:

   A. brought under range crops
   B. Forests
   C. Both a & b
   D. None of the above

   Submitted by: Shafiq-ur-Rehman

8. Discriminant function of plant selection was suggested by____________________?

   A. Smith (1936)
   B. Yates (1947)
   C. Griffing (1956)
   D. Kempt Horne (1957)

9. Top cross was first suggested by__________________?

   A. Simmonds (1979)
   B. East (1908)
   C. Davenport (1908)
   D. Davis (1927)

10. The exact chemical formula of DAP fertilizer is___________________?

    A. (NH2) HPO4
    B. NH4H2PO4
    C. NH4H2PO4
    D. Both a & c