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CSS :: Agronomy


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251.  Nicotiana rustica has been derived as an amphidiploid from a cross between:
A. Nicotiana tabacum x Nicotiana paniculata B. Nicotiana paniculata x Nicotiana sylvestris
C. Nlcotiana undulata x Nicotiana sylvestris D. Nicotiana undulata x Nicotiana paniculata

252.  Nicotine content of the leaves of Nicotiano rustica ranges between _____ percent.
A. 2.0 and 5 B. 3.0 and 4.5
C. 3.5 and 8.0 D. 5.0 and 10.5

253.  Nitrogen application of safflower influences:
A. Seed yield B. Seed composition
C. Both of these D. None of these

254.  Nitrogen is taken by the plants in the form of:
A. Chloride B. Oxide
C. Nitrate D. None of the above

255.  Normally recommended N + P2O5 K2O dose for soy soyabean is ____ kg/ha, respectively:
A. 20 - 30 + 70 - 80 + 50 - 60 B. 20 - 30 + 100 - 120 + 50 - 60
C. 50 - 60 + 70 - 80 + 50 - 60 D. 50 - 60 + 70 - 80 + 80 - 100

256.  Once the phenoxy herbicide penetrates the cuticle, it moves inside the plant:
A. Only apoplastically B. Only symplastically
C. By both mechanisms D. None of these

257.  One acre is equivalent to:
A. 0.603 ha B. 0.040 ha
C. 0.404 ha D. 1.8 ha

258.  One of the following herbicides is a selective herbicide:
A. Simazine B. Bisulphide
C. Pentachlorophenol D. Sodium chlorate

259.  One of the following herbicides is a selective herbicide:
A. Atrazine B. Paraquat
C. Diquat D. Glyphosate

260.  One of the following stages of rice is not critical in respect of irrigation:
A. Seedling B. Panicle initiation
C. Flowering D. Maturity




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