Sowing seed without any tillage in the soil is called ______?
A. Minimum tillage
B. Zero tillage
C. Secondary tillage
D. None of the above
The CO, content of air is ______?
A. 1%
B. 10.3%
C. 0.03%
D. 0.002%
Azolla which fixes nitrogen in rice field is _____?
A. Bacteria
B. Fungi
C. Ferm
D. None of the above
Electrolytes leakage is defendant on ____?
A. Condition of cell membrane
B. Cracking of seed test
C. Both a & b
D. None of the above
Vigor index of seedings in rice can be determined on _______?
A. Quantitative basis
B. Qualitative basis
C. Both a & b
D. None of the above
The higher leachate conductivity is associated with _____?
A. Mature seeds
B. Immature seed?
C. Abnormal seeds
D. All the above
Better crop establishment especially for direct seeded rice can be obtained by using _____?
A. High density grain
B. Low density grain
C. Both a & b
D. None of the above
High density grains are found mostly at ______?
A. Top of panicle
B. Middle of panicle
C. Bottom of panicle
D. All the above
The seed dormancy of rice seed can be broken by putting into the oven at ______?
A. 50°c for 5 hrs
B. 53°c for 6 hrs
C. 45°c for 6 hrs
D. none of the above
genetic purity of seed is determined by ___?
A. Ageing test
B. Grow out test
C. Tz test
D. All the above
