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581.

To assure adequate population in rice, the number of hills per square meter area should be maintained at:

A.	50	B.	80
C.	40	D.	60

582.

To attain maximum yield of sorghum per hectare, plant population should be maintained at:

A.	1,50,000	B.	1,60,000
C.	1,75,000	D.	1,25,000

583.

To avoid rotting in early planting of potato, seeds should be treated with:

A.	0.5 per cent Diathane M-45	B.	2.0 per cent Diathane M.45
C.	1.5 per cent Aretan	D.	2.0 per cent Tafasan

584.

To encourage response of rice productivity in saline alkaline soil the age of seedling for transplanting should be:

A.	15-20 days	B.	20-25 days
C.	25-30 days	D.	30-40 days

585.

To get maximum yield of maize the number of plants required in one hectare land are:

A.	60-65 thousand	B.	80-85 thousand
C.	25-35 thousand	D.	90-95 thousand

586.

To obtain maximum yield of wheat the number of tillers per square meter required is:

A.	100	B.	250
C.	500	D.	750

587.

To quick up the sprouting of potato which of the following is used?

A.	Chlorine	B.	Ethereal
C.	Carbon disulphide	D.	Methyl Bromide

588.

Tobacco belongs to the family:

A.	Compositeae	B.	Solanaceae
C.	Crucifereae	D.	Leguminoseae

589.

Tobacco has been classified as a _____ crop:

A.	Cash	B.	Catch
C.	Inter	D.	Relay

590.

Tobacco requires _____ ?C temperature for uniformly rapid germination:

A.	16-22	B.	19-25
C.	27-32	D.	29-42