Allelocliemicals may enter in the soil through the process of_________________?

Related Mcqs:

1. Soil water in excess of hygroscopic and capillary water which moves downward through the soil by the force of gravity is called______________?

   A. Capillary water
   B. sub-surface water
   C. Gravitational water
   D. Run off water

2. Green revolution came into being due to evolution of_________________?

   A. Wheat varieties
   B. Sugarcane varieties
   C. Cotton varieties
   D. All the above

3. In pulses, for the production of nucleus seed we require minimum of_________________?

   A. 300 plant progenies
   B. 400 plant progenies
   C. 500 plant progenies
   D. 200 plant progenies

4. Breeders seed production is taken up from the nucleus seed B and A lines are pollinated in an isolation of 1 Km in a ratio of_________________?

   A. 1:2
   B. 1:3
   C. 1:4
   D. 1:5

5. The root of cotton plant goes up to depth of_________________?

   A. 2-3 ft
   B. 4-6 ft
   C. 8-10 ft
   D. non of these

6. The significance of difference among several means is tested with the level of_________________?

   A. F-test
   B. t-test
   C. Z-test
   D. X-test

7. Fumigating and warming soil by covering it with black plastic is called__________________?

   A. Mulching
   B. Fumigation
   C. Soil solarization
   D. None of the above

8. The crops which are grown to reduce the soil erosion and natural losses by leaching is known as______________?

   A. Companion crops
   B. Cover crops
   C. Mixed crops
   D. Ratooning crops

9. Sowing seed without any tillage in the soil is called__________________?

   A. Minimum tillage
   B. Zero tillage
   C. Secondary tillage
   D. None of the above

10. The soil are contains__________________?

    A. Less oxygen as compared 10 atmosphere
    B. More carbon dioxide as compared to atmosphere
    C. Both a & b
    D. None of the above