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271.

Phalaris minor weed can be controlled effectively by using _____ herbicide:

A.	Isoproturon	B.	2, 4-D
C.	Fluchloralin	D.	Pendimetholin

272.

Phalaris minor found with:

A.	Dwarf wheat	B.	Tall wheat
C.	Barley	D.	Oat

273.

Avena fatua is crop-associated weed with:

A.	Wheat	B.	Maize
C.	Rice	D.	Cotton

274.

Phosphates enzymes play a major role in _____ of organic phosphates in soil:

A.	Mineralization	B.	Immobilization
C.	Mobilization	D.	None of these

275.

Which of the following ratios between nursery area and transplantation is correct when rice seedling is raised by "Dapog method"?

A.	1;50	B.	1;25
C.	100	D.	1;250

276.

Photodecomposition plays an important role in the loss of urea herbicides from the soil surface in _____ areas:

A.	Moist	B.	Wet
C.	Dry	D.	None of these

277.

Pigeonpea is commonly known as:

A.	Redgram	B.	Greengram
C.	Blackgram	D.	Bengalgram

278.

Podsols are:

A.	Acidic	B.	Alkaline
C.	Alkaline soil with oxidising agent	D.	Marshy soils

279.

Potassium in utilized more efficiently if applied:

A.	Before/at planting	B.	Side dressed
C.	Top dressed	D.	None of these

280.

Potassium salts are:

A.	More mobile than nitrates	B.	Less mobile than nitrates
C.	Less mobile than phosphorus	D.	As mobile as nitrates