Sardar Krushinagar Dantiwada Agricultural Uiversity 2010 B.Sc Agriculture for Competitive -paper36

MULTIPLE ques. FOR COMPETITIVE examination
(B.Sc. Agriculture)
Which of the subsequent weed having herbicide resistance?
a Avena fatua b Phalaris minor
c Tridox procumbens d Trianthema portulocastrum

Which of the subsequent causes more wastage of herbicide by drift?
a High quantity sprayer b Ultra-low quantity sprayer
c Hand sprayer d Low quantity sprayer

Which of the subsequent pair of weeds and crops is not correctly matched?
a Striga : Sorghum b Cuscuta : Lucerne
c Typha : Sugarcane d Orobanche : Tobacco

Which of the subsequent 1 capable of counteracting the effect of herbicide?
a Anathesia b Antidote
c Aborgines d None of these

Stale seed bed technique of weed control is a _______ method.
a Cultural b Mechanical
c Chemical d Biological

Thiocarbamates viz., EPTC, a soil- incorporated herbicide is readily absorbed by roots and coleoptile and is translocated by;-
a Only upward b Only downward
c Both of these d None of these

Photodecomposition plays an important role in the loss of urea herbicides from ____ soil surface.
a Moist b Wet
c Dry d None of these

______ a.i./ha has been recommended for weed control measure in mungbean.
a Fluchloralin @ one kg b 2,4 – D @ one litre
c Simazine @ one kg d Atrazine @ one kg

Which of the followings is a indicator plant for the bioassay of Atrazine?
a Sugarcane b Sesbania
c Sorghum d Soybean

The volume of alachlor (50%) needed for spraying one ha @ 0.75 kg a.i. ha-1.
a 1.5 kg b 1.25 kg
c 1.0 kg d 1.75 kg

When 10 kg 2,4–D is mixed in 1000 litres water, will provide concentration ____ .
a 100 ppm b 10000 ppm
c 1000 ppm d 100000 ppm

Which of the subsequent stages of a crop are more prone to weed competition?
a Germination to seedling b Vegetative
c Reproductive d Maturity

PF refers to;-
a Logarithm of H ion concentration b Logarithm of free flow water
c Logarithm of soil moisture tension d Logarithm of salt concentration

Which of the subsequent is a method of indirect measurement of soil moisture?
a Neutron moisture meter b Electron moisture meter
c Positron moisture meter d Proton moisture meter


Which of the subsequent formulae is correct?
a WR = ET +AW + INR b WR = IR + (ER+S)
c ET = IR + INR (-S) d IR = WR – (ER + S)

What will be CPE value when irrigation is scheduled at 0.8 IW/CPE with 6.0 cm depth of irrigation water?
a 7.5 cm b 75 mm
c 750 cm d Both a & b

Sugarcane crop needed maximum water at;-
a Germination stage b Grand growth stage
c Maturity stage d All of these

Which of the subsequent is not a component of the moisture potential in soils?
a Matric potential b Gravity potential
c Turger potential d Osmotic potential

Major irrigation project covers an area of _______ .
a 1000 ha b > 10000 ha
c 5000 ha d None of these

SAR and RSC values for normal water should be _________.
a > 10 and < 2.5 b <10 and > 2.5
c < 10 and <2.5 d None of these

Earning:   Approval pending.