Q.1 Gypsum is commonly used for reclamation of_________.
Saline Sodic soil Acidic soil All of these
Q.2 Unit of measuring electrical conductivity is__________.
Micro- gram/sq.cm Angstran/cm. Millimhos/cm None of these
Q.3 Which of the following soil control measures is a mechanical measure?
Stubble cropping Green manuring Strip cropping Basin listing
Q.4 Soil erosion of mostly affected by_________.
Rainfall intensity Rainfall variability Rainfall erosivity Total annual rainfall
Q.5 Tillage is most important to crop production because it________.
Destroy soil structure Prepares a good seed bed Improved soil colour Increase the acidity of the soil
Q.6 A green manure crop would_______.
Lower water penetration Decrease aeration Increase nitrogen content None of the above
Q.7 Micro organism such as bacteria and fungi are useful in the soil because they_________.
Are fed by plant Remove carbon dioxide Increase pore space Decay organic matter
Q.8 Inter-culture operation are meant for__________.
Rouging Destroying weeds Thinning Maintaining plant stand
Q.9 The main objective of intercultivation is to_________.
Conserve soil moisture Increase aeration Control weeds Increase water holding capacity
Q.10 which of the following developments has helped in the success of "Zero tillage "?
Insecticides Herbicides Fungicides Soil amendment
Q.11 The difference between photosynthesis and respiration which is referred as___________.
Crop growth rate Net assimilation Relative growth rate None
Q.12 The optimum temperature range for germination of most seeds is___________degree C.
20-25 15-30 25-30 None
Q.13 A fraction of the biological yield which is useful to mankind is known as___________.
Biological yield Harvest index Economic yield Grain yield
Q.14 Inverse yield nitrogen law proposed by__________.
Wilcox Von Liebig Black man Mitscherlich
Q.15 __________is the cheaper and long lasting source of carbon dioxide.
Dry ice CaCo3 Water Organic matter
Q.16 In a situation with different levels of plant population where the seeds per inflorescence and size of seeds are more resulting in higher yield..
Low population density Moderately dense stands Extreme dense stands None
Q.17 Plant lose about_________percent of the absorbed water just to maintain the optimum temperature .
65 75 80 70
Q.18 Baul unit indicate the amount of nutrient that when added result in moving yield_________way closer to maximum possible yield.
One half One third One fourth None
Q.19 Leaf orientation/ angle exceeds 60o intercept maximum sun light is known as_________.
Errectophile Planophile Plagiophile Both A & B
Q.20 ____________is one factor under which many environment is limiting and cannot be supply artificially to the crop.
Nutrient Water Co2 Solar radiation
Q.21 The organic matter content in arid sandy soils is____________%.
> 1 < 1 >2 1-2
Q.22 High temperature influence sex ratio in flower in__________crop.
Maize Castor Pearl mill ate Cotton
Q.23 Expansion of the leaf blades is maximum in__________portion of the spectrum.
Orange-red Blue violet Infra red Ultra violet
Q.24 Relative humidity and wind velocity are inter related and have___________relationship.
Negative Positive Antagonistic None of above
Q.25 Water is main constituent of the protoplasm comprising up to about_________% of its total weight.
80-85 90-95 70-75 60-70
Number of score out of 25 = Score in percentage =
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