ZOO506 Final Term Subjective by Qamar

ZOO-506 Final Term Subjective

1) Scientific name of early shoot borer? 2

Trichogramma chilonis is the scientific name of early shoot borer.

2) Define arthropods? 2

A group with remarkable differences of structure and so abundant that all the other animals taken together are less than one-sixth as many as the arthropods

3) What is biological control? 2

It is possible, however, for man to encourage such beneficial forms by introducing them into new areas, by growing them artificially for liberation whenever they become scarce in nature.

4) Order of termites 2

Isoptera is the order of termites.

5) Appearance of adult rice-ear.2

The adult of Leptocorisa oratorius is green, light brown or mixed yellow in color. The adult are slender and about 20mm long.

6) Economically importance of insects. 2

to insect attack.

7) Why fuzz is used? 2

It is used in production of mattresses, surgical cotton, photographic film and paper.

8) What is sanitary control? 3

Methods to avoid introducing a pest into a field by 1Cleaning field equipment 2Planting certified seed 3Quarantines

9) What are attractant? 3

Sometimes called attrahents are materials used to lure insects to traps and poisoned baits. The use of geraniol in Japanese beetle traps, sugar sirups for ant baits, and fermenting sirup solutions for trapping various moths are good examples.

10) Advantage of weeds destruction in cultural control? 3

The destruction of vegetable trash and weeds, frequently called clean culture, is also an important factor, especially in the control of hibernating insects. Weeds not only interfere with successful crop growth by crowding, but they may reduce the vigor of the crop by competing for plant food in the soil. The destruction of weeds and brush along fences is of advantage in the reduction of insects. But it results in the elimination of nesting and hiding places for insectivorous and game birds.

11) Why foreign insects brought in the country.3

From abroad to combat those foreign insect pests brought to this country accidentally but without their natural enemies.

12) Damage control by termites. 3

The use of partially decomposed manure should be avoided Locate and destroy the termite colony nearby field. Irrigation water with crude oil emulsion. The removal of decaying organic matters cow dung, wood or dry stubbles from the field. Setts treatment with Imidacloprid (0.1%) or Chlorpyriphos 20 EC 0.04 % for 5 min. Application of well rotten Neem cake manure 60 Cartloads/ ha. Spray Chlorpyriphos 20%EC 750 ml/ha.

13) Time of planting of sugarcane for cultural control? 5

Time of planting:

1. Early planting during December –January to escape the shoot borer incidence.
2. Detrashing
3. Internode borer and Stalk borer
4. Manuring
5. Avoid excess use nitrogenus fertilizers.
6. Stalk borer and internode borer.
7. Trash mulching and earthing up.

14) Economic importance of insects? 5

to insect attack. Although, it is the general practice to express losses in terms of dollar valuation. It probably would be safer to give them in bushels, tons, because the relative values of different crops and products change from year to year. Because there never has been a season free from the ravages of insects which might serve as a standard for comparison, much of this loss is not appreciated. If there could once be such a year entirely insect free, the difference would be apparent at once.

15) What things keep in mind during field scouting? 5

A field scout’s objective is to provide an accurate and unbiased objective of pest populations. What tools and procedures do you use for alfalfa weevil for potato leafhopper, etc?

Both of these examples are pests on alfalfa, however, the sampling procedure is different. We cannot monitor their damage, nor are they easily counted on alfalfa foliage because they are small and easily fly when disturbed. Instead, we must use and insect sweep net and count the number of adults and nymphs caught.