3501. N mineralization is effected by soil pH_______________?
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A. None of the above

B. Above 10

C. Above 6

D. Below 6

3502. The best soil for cotton cultivation is_________________?
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A. Silty soil

B. Clay loam soil

C. Loamy soil

D. Sandy soil

3504. The Indus basin irrigation system has__________________?
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A. 19 Barrages

B. 25 Barrages

C. 11 Barrages

D. 41 Barrages

3505. A nutrient element is said to be essential if___________________?
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A. Plants can not complete their life cycle in absence of that element

B. Deficiency symptoms can be removed by application of that putrid

C. All the above

D. Nutrients has some physiological function in metabolism of plant

3510. The crop which are cultivated for grain purposes are called_________________?
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A. Fodder crops

B. Cereal crops

C. Fiber crops

D. Leguminous crops

3511. The leguminous plants are important in agriculture because_________________?
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A. Help in nitrogen economy of nature

B. Six crops are harvested in a year

C. They are disease resistant

D. They need very little water to grow

3513. The depth of water required by crops during the base period is called_____________________?
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A. Duty of water

B. Frequency of water

C. Delta of water

D. Acre inch

3515. CLCV stands for__________________?
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A. cotton leaf curl virus

B. Cotton leaf cover virus

C. cotton leaf cotton virus

D. cotton leaf complete virus

3516. The K is predominantly in______________?
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A. All the above

B. Straw

C. Leaves

D. Grain

3518. The contact herbicides are less effective to_________________?
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A. Perenial plants

B. Broad leaved weeds

C. All the above

D. Seasonal plants

3519. The available form of nitrogen for plants is_________________?
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A. NO<sub>3</sub>

B. NH<sub>4</sub>

C. Both a and b

D. non of these

3520. Excess of nitrogen to plants causes_________________?
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A. Delay in ripening

B. Delay in germination

C. All the above

D. Delay in growth

3521. Main reason behind the shedding of flower in cotton is__________________?
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A. Cloudy day

B. High temperature

C. Low temperature

D. Humidity

3528. The productive branches of cotton are called________________?
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A. Fruiting branches

B. Sympodial branches

C. Monopodial branches

D. non of these

3529. Plants which grow on dry region are____________________?
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A. Thermophytes

B. Xerophytes

C. Haplophytes

D. Hydrophytes

3530. genetic purity is assessed through________________?
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A. Germination

B. Inspection

C. Seed testing

D. All the a b c

3533. AZR1 is___________________?
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A. Attock Zonal research institute

B. None of the above

C. Agriculture zonal research institute

D. Arid zone research institute
3534. Gassypium barbadense was originated in__________________?
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A. Central and South America

B. Central and North America

C. Central and South Asia

D. North Mexico and North America

3537. Effects of allelopathic compound in the life cycle of plants cause inhibition of________________?
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A. non of these

B. seed germination

C. Seed swelling

D. Seed deterioration

3538. CCRI stands for_______________?
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A. Cotton crop research institute

B. Center for crop research institute

C. Central cotton research institute

D. non of these

3539. The seed dormancy of rice seed can be broken by putting into the oven at____________________?
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A. none of the above

B. 53c for 6 hrs

C. 45c for 6 hrs

D. 50c for 5 hrs

3540. A region with an annual rainfall less than 10 inches comes under_________________?
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A. And climate

B. Semi-and climate

C. None of the above

D. Wet climate

3543. Best time of sowing for cotton is______________?
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A. non of these

B. Mid May to mid July

C. Mid March to mid April

D. Mid June to mid July

3544. In pulses, for the production of nucleus seed we require minimum of_________________?
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A. 400 plant progenies

B. 300 plant progenies

C. 200 plant progenies

D. 500 plant progenies
3548. Fertilizer requirements of wheat under medium loamy soil is________________?
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A. 100-70 NP kg/ha

B. 110-60 NP kg/ha

C. 75-90 NP kg/ha

D. 136-85 NP kg/ha
3549. Genus of cotton is___________________?
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A. Hirsutum

B. Gassypium

C. Triticum

D. Hordeunt