Hitting the seed with force against a hard surface to break seed dormancy is called_______________?
A. Impaction
B. Abrasion
C. Stratification
D. Scarification
The value of regression and correlation is the same when the correlation between two variables is_________________?
The value of regression and correlation is the same when the correlation between two variables is_________________?
A. Imperfect
B. Perfect
C. Positive
D. Negative
The given off water vapours from the surface of leaves is called________________?
The given off water vapours from the surface of leaves is called________________?
A. Transpiration
B. Respiration
C. Exudation
D. Evaporation
Mg in plants act as___________________?
Mg in plants act as___________________?
A. Protein activator
B. Enzyme activator
C. Starch activator
D. None of the above
Tensiometer is used for measuring____________________?
Tensiometer is used for measuring____________________?
A. Soil moisture
B. Water pressure
C. Wind pressure
D. None of the above
The contact herbicides are less effective to_________________?
The contact herbicides are less effective to_________________?
A. Broad leaved weeds
B. Perenial plants
C. Seasonal plants
D. All the above
Two much Mg may create deficiency for_____________________?
Two much Mg may create deficiency for_____________________?
A. P
B. Ca
C. N
D. K
In wheat total crop N uptake per ton of grain is about__________________?
In wheat total crop N uptake per ton of grain is about__________________?
A. 50-60 Kg
B. 20-30 Kg
C. 15-20 Kg
D. 70-80 Kg
The sever salinity problem has taken lands out of production as___________________?
The sever salinity problem has taken lands out of production as___________________?
A. 50%
B. 10%
C. 45%
D. 30%
Pakistan has a total forest area of about_________________?
Pakistan has a total forest area of about_________________?
A. 22 million ha
B. 32 million ha
C. 12 million ha
D. 20 million ha