Why do rodents may develop bait shyness to acute poison?

In which of the following will you suspect rodent infestation in your field?

Rats will produce two or three litters of__pups per cropping season, none of which will breed in that season.

To distinguish golden apple snails from native snails, what parameters are checked?

Why do golden apple snails able to attack rice seedlings upto 30DAT?

When is the critical time to manage golden apple snails in direct wet seeded rice?

A vertebrate pest which is a perennial problem in crop production that usually demands unified, coordinated, and sustaine community action to gain an effective control

These organism is introduced to Asia, from South America, in the 1980s as potential food for people, but it unfortunatel became a major pest of rice

White heads can also be caused by stemborer, how can you identify that the damage is caused mainly by rice-eating birds?

Damage caused by weeds is generally not visible or noticeable because

Not all weeds are destructive, some are useful to man in terms of

Weeds can also cause losses in terms of its effect on water management such as:

Some weed species can cause hazard to human health as well as livestock. This aquatic weed serves as host habitat to mosquitos carrying the parasite responsible for rural filiariasis and encephalomyelitis

Some weeds are toxic to humans and livestock. This species cause diarrhea resulting to death of animals

Perennial weeds are also called "evergreens" and reproduce by seeds and vegetative propagules. Water lettuce is an aquatic perennial that reproduce by

Seed dispersal through water run-off is common among weeds because of

Allelopathy in weeds-crop associated means

Seed dormancy is an important adaptive mechanism of weeds because

Which of the following weed species is an example of a monocotyledonous broadleaf?

Cyprus rotundus is able to persists because:

A grass is a weed, which has

Which of the following best describes a weed in relation to crop production:

The following species reproduce asexually EXCEPT

Poisoning specimens for herbarium collection means:

The tubers of Cyprus rotundus would remain dormant if:

The physical form of dormancy is brought about by the pressure of

The sedges possess the following traits except

Allelopathic plants are those that secrete substances

The critical period of competition is generally about

The allelopathic substances produced by plants which are effective against another plant

Weed control activities must be done during this stage to ensure good yield

The predominance of weed species in the field is due to all of the following reasons except:

The first sign of germination showing the root breaking into the weed seed is called

This weed is vine-like and can quickly spread and compete with sweet potato plants for nutrients and sunlight.

This involves evaluating the potential invasiveness and impact of weed species before their introduction into new areas

In this technique, weeds are allowed to emerge for at least 2 weeks before being killed.

Which of the following is a cultural control method for weeds?

What happens during seed imbibition?

In dry-seeded rice, what is the appropriate step in controlling weeds?

Mandibles are highly developed in what insects?

Banana and Abaca Bunchy Top is caused by a virus transmitted by a brown banana aphids known as

A category of pest cause no significant damage under the conditions currently prevailing, however, this can be a key or occasional pest if conditions in the field are disrupted

When the mouthpart are directed anteriad, this is known as

The insect order characterized by having scales on its membranous wings

These insects are omnivores, they feed on thin leafed perennials but also feed on other insects especially pests and commonly used as biocon agents in IPM

Why are Plecopterans are also known as indicators of water purity?

The larvae of the insects in this order are important predators in aquatic ecosystems and they also serve as food for fish and other aquatic vertebrates

To limit pest and disease damage, the most appropriate step is

Which of the following is TRUE about mole crickets?

Which of the following can favor population build up of rice stemborer?

Which of the following suggests rice hispa infestation?

These insects are known for their ability to feed on wood and other cellulose-containing materials.

Why are termites known as social insects?

In which of the following conditions root aphids are NOT favored to thrive?

This is the premier research institution in the Philippines dedicated to rice research and development. It conducts research on various aspects of rice production, including crop protection

Which botanical insecticide acts as a contact and stomach poison for insects?

In true bugs, the__are folded under the__ when at rest

Which of the following is a sensory structure in an insect's mouthpart?

Which of the following is a correct match?

Which of the following botanical insecticide is extracted from the seeds of the neem tree that disrupt insect growth and feeding?

Which of the following modified wing part is described as interlocking with a row of grooves or ridges on the posterior edge of the forewing?

What is the primary function of halteres in an insect wing?

This is a pest that affects various citrus trees. The larvae create winding tunnels within the leaves, leading to distorted and curling foliage

This is an invasive pest that has rapidly spread across many countries, including the Philippines, since its first detection in Africa in 2016. It primarily affects maize (com) crops but can also infest other crops such as rice, sorghum, sugarcane, and vegetables

Odd one out based on the insects' antennae

The larvae of this moth species feed on corn ears, causing damage to the kernels. They tunnel into the ear, leading to kernel injury and susceptibility to secondary infections

Cutworms are typically active during the___and hide in the soil during the

What is secreted by aphids?

A sugarcane farm has been reportedly infested with armyworms. Which of the following findings supports the claim that armyworms have infested the farm?

In what part of sugarcane can we observe Sugarcane whitefly infestation?

It is the largest segment of the thorax and carries the third pair of legs

The Integrated Pest Managementt does NOT encourage

insecticide X contains the active ingredient at 300g/liter of the formulated product, what percentage of the product is its active ingredient?

Insecticide Y has 3% active ingredient. Express the concetration of insecticide Y in parts per million

If 33.3kg Furadan 3G had been used and it has 30g Carbofuran active ingredient/kg product, how many kilograms of Carbofuran was applied?

Chemicals that are usually non toxic to insects by themselves but, when added to another substances makes an insecticide mixture with enhanced toxicity

Which of the following is the most lethal?

The relative number of heritable qualities in plants that influence the ultimate degree of damages by the pest

The pest density at which artificial control measures should be applied to prevent pest population increases ot pest outbreak

During severe corn borer infestation, Furadan 3G should be applied at 33.3kg.ha. How much of the product is needed for 15,000m2 of corn in case of severe corn borer infestation?

If the only available packaging in a farmer's favorite store is 250ml bottle of Confidor SL 100, how many bottles should the farmer buy if he needs 2.25L?

You wish 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:

Irradiation of fruits with gamma rays falls under what method of disease control?

Spraying of plants with a plant defense activator such as salicylic acid and dichloroisonicotinic acid falls under what principle of plant disease control?

ElL tells the maximum number of pests the crop could tolerate but it does not tell when to do something about the problem

This attribute of modern agriculture can aggravate pest and disease problems

In the development of crop protection, this phase is characterized by the use of traditional varieties and natural pest control methods

Pesticides can enter the body in a number of different ways. What is the mode of entry when pesticides can enter the body when a person is smoking while spraying?

Which of the following is INCORRECT about rodent control?

Which of the following denotes a pesticide as "harmful"?

The amount and type of protective equipment required for spray operators is determined by the:

A herbicide when applied to the foliage and kill only the plant part or plant tissues that are very close to the site of application

A name given to pesticides by a recognized authority on pesticides nomenclature is called

A pesticide label which refers to the physical properties of the pesticides is called

The main objectives of pest control which is based on occurrence, probabilities of frequency and intensity, distribution and potential for damage is called

Which among the following is NOT part of the category of pesticide toxicity?

The word "CAUTION" is the signal word for what category of pesticides

The breathing organ of insects is

Majority of stored product pests belong to the order

Adults bore through cabbage and legless larvae feed on the soft bud of the coconut resulting on the destruction of the whole crown. Asiatic Palm Weevil is also known as