Essential plant nutrients, available forms and sources

Essential plant nutrients

Essential plant nutrients, available forms and sources   Nutrients    Available forms                          Specific sources Organic               Inorganic Carbon (C)  CO2 (mainly by stomata)                           Air, atmosphere Hydrogen (H) H2O, H+    …

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Everything about Ladybird Beetle

Ladybird Beetle  Ladybird Beetle Scientific name: Harmonia axyridis Family name:Coccinellidae Order name:Coleoptera Origin:Asia   Nature of damage   Ladybugs have always been considered beneficial insects, worthy of protection. Large numbers …

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Pros and cons of agriculture

pros and cons of agriculture

Pros and cons of agriculture The opportunities and constraints prevailing in the agricultural sector are as follows: Pros 1.      Agricultural sector is the single largest contributor to GDP.   2.      …

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Importance and Classification of Plant Disease

Importance and Classification of Plant Disease

Classification of plant disease: Plant diseases are classed as infectious or noninfectious based on the principal causative agent. Pathogenic organisms that cause plant illnesses include fungi, bacteria, viruses, viroid, nematodes, …

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3 most common vegetable pests and their control measure

common vegetable pests

3 most common vegetable pests and their control measure Epilachna beetle Scientific name: Epilachna dodecastigma. Family: Coccinelliadae. Order: Coleoptera.  This is one of the major pest for vegetable crops in Bangladesh causing considerable damage to  brinjal,tomato, potato, bean and cucurbitaceous vegetables. Nature of Damage The beetles as well as grubs cause damage by feeding upon the epidermis of leaf tissues leaving  parallel band of uneaten tissues between the leaves. Thus present a tube like appearance. They turn  brown, dry up and fall of completely defoliating of the plant. Life History 1. Eggs are laid in batches on the dorsal surface of the leaves.  2. Incubation period 4­-6 summer and 9-10 in winter. 3. There larval stages in up to 2 weeks, pupal stages in 1 week. …

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Chemical method of pest control

Chemical method of pest control

Chemical method of pest control: Different types of chemicals are used for the control of insect pests. Insecticides can be grouped in various ways, such as their chemical composition, mode …

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