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Which among the following is the yellow stemborer
One of these is not a common name of Helicoverpa armigera
Which of the following pests of coconut some time ago devastated almost all the coconut growing areas in the CALABARZON and other regions extending to Zamboanga causing yellowing and drying of leaves?
The level of insect pests at which control must be applied to prevent an increasing pest population from causing economic losses
Pests that are the focal point of pest management systems
The following are destructive only during the larval stage, except
This is a vector of citrus greening disease or Huanglongbing disease.
The larva enters the seeds and feeds inside the stored rice grains. Once fully grown, the adult eats its way out of the grain or seed. With severe infestation, the grain becomes unsuitable for human consumption.
The growth stages of the rice plant that are most preferred by the rice black bug
Which of the following statements is correct?
All are damages produced by chewing insects except
Tiger and Asian tiger mosquitoes transmit this insect-borne disease
All are major insect pests of rice except
The most damaging insect pest of cabbage and other crucifers
The biggest among the species of rats destructive to agricultural crops
The growth stages of the rice plant that are most preferred by the rice bug
What is the vector of the oriental rat flea
Which among the following is under a different family?
The color code of Category IV pesticides.
Defined as chemicals that cause insects to make oriented movements away from their source
Involves the introduction of a pest’s natural enemies to a new locale where they do not occur naturally.
These are mainly free-living species that directly feed on a large number of other insect pests.
This involves altering the DNA of pest species or irradiating male insects to become sterile and then releasing the altered organisms into their wild populations.
A control action that prevents the introduction of potential pests to another area or prevent further dissemination of those already present in the locality
Popular hymenopterous parasitoids as Biocon agent of Asian corn borers
The following are mechanisms of host plant resistance except
The point of entry of fumigant insecticides
The following are examples of organophosphate insecticides except
Latay 15 EC will be applied in a field measuring 1.5 ha at a rate of 2.2 kg a.i./ha. How many liters of Latay 15 EC will be used?
An insecticide contains 75 % a.i. and the recommended rate of application is 2.3 kg a.i./ha. The area to be treated measures 20,000 m^2. What will be the required amount of the insecticide?
A farmer finished calibrating his knapsack sprayer. It has a spray discharge of 0.75 L/min. He sprayed an area of 41 m^2 in one minute. What is the application rate per hectare of his sprayer?
For numbers 4-7: Björn wishes to apply 300 liters of spray solution per hectare to a 0.5 ha area. The recommended spray concentration of the 45% EC pesticide is 0.04%.
The spray volume needed for the treated area is:
The amount of pesticide required for the treatment is:
Using a 16 L capacity sprayer, how many sprayer loads will be done?
The amount of pesticide needed per sprayer load is
