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Agronomy-4

Q.1
_________ type of surfactant having both positive and negative charges.

Anionic
Non-anionic
Zwitterionic


Q.2
Methyl bromide acts as a soil __________ __in tobacco nursery.
Fumigent
Sterilant
Both


Q.3
________________ bioagent is used to control Parthennium histerophorus.
Zygograma
Hypena jussalis
Sameoides


Q.4
_______________ mycoherbicide is used to control Johnson grass.
Biolophos
Bipolaris
Collego


Q.5
____________ crop suppresses weed growth by smothering effect.
Castor
Cowpea
Cotton


Q.6
_____________ herbicide is used as broad spectrum herbicide for weed control.
Pendimethalin
Metoxuron
Isoproturon

Q.7
An application of herbicide after emergence of weeds is known as ___________.

Pre-emergence
Post-emergence
Early post-emergence


Q.8
An application of herbicide at last cultivation in the crop is known as __________.
Lay-by-application
Post emergence application
Early post-emergence


Q.9
___________ is a curative method for weed control.
Sieving
Searing
Keep vigilance


Q.10
An application of herbicide in restricted area of row length is known as_____ .
Spot application
Blanket application
Band application


Q.11
A text book entitled “Principles of weed science” is written by ________.
O. P. Gupta
V. S. Rao
N. C. Joshi


Q.12
Paraquat is a _______ herbicide.
Contact
Translocated
Both


Q.13
According to ontogeny, congress grass is classified as _______.
Annual
Biannual
Perennial


Q.14
_________ weed covered most of forest area in our country.
Lantana camera
Communist weed
Tiger grass


Q.15
_______ weed seed admix with wheat flour gives bread a bitter taste and irritates the gastric tract of the consumer.
Mexican poppy
Salvinia
Corncockel


Q.16
_______ weed is used for leafy vegetable.
Chicory
Crotolaria
Amranthus


Q.17
Lantana contains _______ toxic alkaloids.
Documarin
Oxalate
Lantradine-A


Q.18
_______ weeds has phenotypic mimicry in rice crop.
Samo
Canry grass
Crab grass


Q.19
_______ is a crop bound weed in mango orchard.
Loranthus
Broom rape
Witch weed


Q.20
_______ dormancy usually results of hard seed coat of weed.
Enforced
Innate
Induced


Q.21
______ are helps to antagonize phytotoxicity of specific herbicide to specific plant.
Antidotes
Modifiers
Antagonists


Q.22
______ allows herbicide to get through to the outer surface to inside of the treated area.
Penetrant
Spreaders
Humicants


Q.23
The study of relationship between communities of different weed spp. with their environment is known as _____ .
Climax community
Ecological succession
Weed synecology


Q.24
The presence of ______ weed is indicated by moisture stress appearance of the crop despite of adequate soil moisture.
Cattail
Witch weed
Canary grass


Q.25
The process of gene transfer to create herbicide resistance in crop plant is known as_________.
Transformation
Transgenic
Transgenes

Number of score out of 25 = Score in percentage =


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