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VIRGINIA COMMERCIAL PESTICIDE APPLICATORS EXAM 7A(ACTUAL EXAM) WITH CORRECT QUESTIONS AND CORRECTLY WELL DEFINED ANSWERS LATEST 2024 ALREADY GRADED A+ $12.99
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VIRGINIA COMMERCIAL PESTICIDE APPLICATORS EXAM 7A(ACTUAL EXAM) WITH CORRECT QUESTIONS AND CORRECTLY WELL DEFINED ANSWERS LATEST 2024 ALREADY GRADED A+ name at least 2 disadvantages of WPs - ANSWERS -1. not easy to measure 2. inhalation hazard to applicator while mixing and measuring what is the term for a wettable powder formulation that has been compressed into granule -sized particles? - ANSWERS -Dry flowable (DF) or water -dispersible granule (WDG) what should you do first if you discover a pest that may need to be controlled? - ANSWERS -make sure the pest is actually responsible for the damage. then accurately identify the pest how can pest identification help you develop a good pest control strateg y? - ANSWERS -it allows you to determine basic information about the pest, including its life -cycle and when it is most susceptible to control measures. name the 5 basic pest groups - ANSWERS -weeds, parasites and diseases, mollusks, arthropods, and vertebr ates. why do weeds present such a challenge to pest managers? - ANSWERS -
weeds are often hardy, aggressive, and tolerant of harsh conditions. many produce large numbers of seeds which can spread over a wide area and remain dormant for a long time. how can you tell a monocot from a dicot? - ANSWERS -monocots (sedges and grasses) have one cotyledon, parallel leaf veins, flower parts in multiples of 3 and fibrous roots. Dicots have 2 cotyledons, broad leaves with netted veination, and flower parts in multiples of 4 and 5 and usually have taproots. Explain the difference between key pests, occasional pests and secondary pests - ANSWERS -Key pests are nearly always present and require regular control. occasional pests are migratory or cyclical and require intermittent control. secondary pests require c ontrol only under certain conditions, such as the elimination of a key pest or the absence of a natural host. what should you do first if you see damage to a plant, animal, or valuable product/ - ANSWERS -identify the cause name the pathogens that cause most plant and animal diseases - ANSWERS -fungi, bacteria, mycoplasma, and viruses what are the symptoms of viral plant diseases - ANSWERS -stunting, yellow rings on leaves, wilting, and mosaic patterns how do plant parasitic nematodes harm plants? - ANSWERS -by attacking the roots, stems and leaves. nematode root feeding interferes with a plants ability to take up water and nutrients. infected plants wilt and seem to be suffering from a l ack of water or nutrients. how do mollusks harm plants? - ANSWERS -by feeding on foliage and fruit. mollusks reduce the value of commercial produce if they feed on harvested plants and fruit. what are arthropods? how do they differ from vertebrates? - ANSWERS -arthropods are animals with segmented bodies and jointed appendages. Arthropods have an external skeleton and may have specialized appendages such as sucking tubes, chewing mouth parts, antennae, and pincers. they have no backbones like vertebrates
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