Agriculture Exams (Agri Croppro) – Page 1

#0. The main goal of weed science is :
A the formulation of the most satisfactory, most efficient with optimum cost of controlling weeds.
B the application of control measures which may not assure complete success but at least reduce weed
C the formulation of the most satisfactory, most efficient yet least expensive methods of controlling weeds
D to hold pest populations below their economic threshold level
Answer: the formulation of the most satisfactory, most efficient yet least expensive methods of controlling weeds
#1. One of the following is not a definition of a weed
A a plant that is growing out of place
B a plant that interferes with man’s objectives
C a desirable plant
D a plant that has no economic value
Answer: a desirable plant
#2. If Sumicidin 3EC has to be mixed at 5 tbsp/16L water, what is the percentage of Sumicidin 3EC in the spray solution?
A 0.31
B 5
C 8
D 32
Answer: 0.31
#3. At the seedling stage of the rice plant, insecticide M should be applied at 19 16 li-sprayer loads per hectare. How many liters of spray solution have to be sprayed for 1.25-hectare rice farm at seedling stage?
A 304
B 19
C 380
D 16
Answer: 380
#4. Recommendation calls for 40 and 30 ml of insecticide M per sprayer load. If 19 and 31 sprayer loads will be used during the seedling and vegetative stages of the rice plant, respectively, how much more insecticides M is needed in spraying a hectare at vegetative than at seedling stage?
A 120 ml
B 10 ml
C 17 ml
D 170 ml
Answer: 170 ml
#5. A carbamate insecticide, effective against thrips, has 500 g Methiocarb per kg formulated product. What is the concentration in percent of formulated product?
A 5
B 50
C .05
D 31.25
Answer: 50
#6. For severe infestation, a pyrethroid insecticide with 25% active ingredient should be used at 5 tbsp/16 liter of water. What is the concentration in percent of the spray solution?
A 0.025
B 0.05
C 0.075
D 0.08
Answer: 0.08
#7. If 150 liters of the spray solution should be prepared, how many kilograms of the formulated product are needed with the recommendation that it has to be applied at 5 tbsp/16 liters of water?
A 4.7
B 0.5
C 0.47
D 15
Answer: 0.47
#8. A slurry, good for 1 kg of seeds, is prepared by mixing 12.5 ml of insecticide ST in 10 ml of water. How much of the slurry is needed for 4.5 tons of seeds?
A 101.25 L
B 10.12 L
C 1.25 L
D 1.21 L
Answer: 101.25 L
#9. How much water is needed in the preparation of a slurry for 4.5 tons of seeds if the dilution rate is 12.5 ml of insecticide ST in 10 ml water?
A 54 L
B 45 L
C 450 L
D 102 L
Answer: 45 L
#10. If a farmer would so his own seed treatment how much of insecticide ST would he need to treat 20 kg seed enough to plant a hectare given a dilution rate of 12.5 ml of insecticide ST in 10 ml of water?
A 25 ml
B 10.5 ml
C 20 ml
D 250 ml
Answer: 250 ml
#11. A farmer used 360 ml of Insecticide Y in his farm. He followed the recommended dosage of 3 tbsp/16 liters of water and spray volume of 160 liters per hectare. What is the area of his farm?
A 1.02
B 1.2
C 1.12
D 1.45
Answer: 1.2
#12. What is the rate of application in amount of formulated product per hectare if the recommended dosage is 3 tbsp/16 liter of water with spray volume of 160 li/ha?
A 35 ml/ha
B 350 ml/ha
C 300 ml/ha
D 30 ml/ha
Answer: 300 ml/ha
#13. What is the rate of application in terms of g ai/ha if Insecticide Y which has 2.5% active ingredient, has to be diluted at 4 tbsp/16 li of water and applied 240 li/ha?
A 5
B 10
C 15
D 20
Answer: 15
#14. How much of insecticide G is needed for 1.75-hectare eggplant farm if the recommended rate of application is 6 kg/ha/application?
A 10 kg
B 10.5 kg
C 17.5 kg
D 15 kg
Answer: 10.5 kg
#15. At spray volumes of 240 and 176 L/ha, a molluscicide should be diluted at 70 and 100 liters of water, respectively. Which of the spray volumes would require les of the molluscicide?
A 176 L/ha
B 240 L/ha
C A & B
D It depends
Answer: 240 L/ha
#16. Among the invertebrates, only insects have these characters?
A Segmentation
B Wings
C Antennae
D 3 pairs of jointed legs
Answer: 3 pairs of jointed legs
#17. From which character was the name “Arthropoda” derived?
A Segmentation
B Wings
C Antennae
D Jointed legs
Answer: Joined legs
#18. Which of these is important in distinguishing beetles from earwigs?
A Wings
B Cerci
C Eyes
D Antennae
Answer: Cerci
#19. In insects, where are the cerci located?
A Head
B Thorax
C Abdomen
D Legs
Answer: Abdomen