A. Soil tilth depth
B. Soil moisture
C. Soil compaction
D. Soil seepage
Agronomy
2,4-d is synthetic herbicide derived from……………?
A. Amino acid
B. Valine
C. Auxins
D. Cytokmins
In wheat total crop P uptake per ton of gram is about;………………?
A. 5-20 Kg
B. 2-3Kg
C. 5-7 Kg
D. 20-25 Kg
N mineralization is effected by soil pH……………?
A. Below 6
B. Above 6
C. Above 10
D. None of the above
Low soil pH is the indication of……………?
A. High Mg and Ca
B. High N and S
C. Low N and Ca
D. Moderate Mg and Ca
The K is predominantly in…………..?
A. Leaves
B. Straw
C. Grain
D. All the above
In Pakistan the area effected due to water erosion is about……………..?
A. 12 million to
B. 13.05 million lia
C. 22 million ha
D. 15 million lva
In Pakistan, the total length of canal system exceeds…………….?
A. 59000 Km
B. 52000 Km
C. 58000 Km
D. 60000 Km
Number of crops grown on the same piece of land in a year and expressed in percentage is known as……………?
A. Cropping pattern
B. Cropping index
C. Crop rotation
D. Cropping intensity
The transport of a substance across a biological membrane against a concentration gradient is called……………….?
A. Passive transport
B. Active transport
C. Absorption
D. Dissolution