Quiz 4
31)Heavy infestation of which of the following causes poor ploughing performance
(A) E. Colonum
(B) Cyprus rotundus
(C) Cynodon dactylon
(D) None of these
Correct Answer :Cynodon dactylon
32) Based on morphology, the weed is classified into
(A) Grass
(B) Sedge
(C) Broad leaved weeds
(D) All of these
Correct Answer :All of these
33) Examples of broad leaved weed is
(A) Flavaria australacica
(B) Digeria arvensis
(C) Abutilon indicum
(D) All of these
Correct Answer :All of these
34) Which of the following is not a indigenous weed?
(A) A. indica
(B) A. indicum
(C) P. hysterophorus
(D) None of these
Correct Answer :P. hysterophorus
35) Total root parasite on tobacco is
(A) Parthenium
(B) O. Cermua
(C) D. Stramonium
(D) W. Somnifera
Correct Answer :O. Cermua
36) Eichhornia crassipes is
(A) Submerged weed
(B) Marginal weed
(C) Floating weed
(D) All of these
Correct Answer :Floating weed
37) Zygogramma bicolorata beetle feed on leaves of
(A) Water hyacinth
(B) Parthenium
(C) Lantana
(D) All of these
Correct Answer :Parthenium
38) Phytophthora palmivora causes root rot in
(A) Morrenia Odorata
(B) A. Virginica
(C) S. Halepense
(D) All of these
Correct Answer :Morrenia Odorata
39) Application of volatile chemical on confined spaces to produce gas that will
destroy weed seeds is called
(A) Fumigation
(B) Herbigation
(C) Band application
(D) All of these
Correct Answer :Fumigation
40)A herbicide which kills some species in a mixed growth plant species are termed
as
(A) Selective herbicides
(B) Nonselective
(C) Contact
(D) None of these
Correct Answer :Selective herbicides
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Keyword :- Agronomy mcq with answers
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Agronomy is a science that looks at agriculture from an integrated, holistic perspective, informing practical decisions pertaining to food and fiber production. Agronomy requires integration of many sciences, and collaborations among many diverse fields, including soil, plant, and weed sciences, as well as the disciplines such as ecology, entomology, climatology, and economics. Effective crop production methods are grounded in scientific research and thus are by nature continually evolving and improving.
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