Disease Control
Bayani Gaba-gaba
Crop diseases are caused by tiny living things you cannot see without a microscope: bacteria, fungi and viruses. A single infected plant left in a field can become the source that spreads disease to a whole crop, turning a healthy harvest into a failure. Knowing what causes a disease, how it gets into the plant and how it spreads is the key to stopping it.
In this lesson you will study one named disease from each group: a bacterial disease, a fungal disease and a viral disease. For each you will learn how it infects the plant, the harm it does, and how it can be prevented and controlled. You will also meet the idea of the disease triangle, which explains why removing any one of three things, the pathogen, a susceptible crop or the right conditions, can stop a disease in its tracks.
Manufura
- (a) describe the mode of infection, harmful effects, prevention and control of one named plant disease from each of the following groups: • bacterial diseases • fungal diseases • viral diseases.
Darasin Sauti
Saurari wannan darasi a cikin manhaja
Taswirar tunani
An zana wannan batu don ka ga yadda ra'ayoyi ke hadewa.
Bude taswirar tunani a cikin manhaja
Katunan tunawa
Gwaji mai sauri kan abin da ake jarraba a wannan batu.
Yi atisayen wadannan katuna a cikin manhaja
Takardar Darasi
Cikakken Bayanin Darasi Yana Kan Manhajar Green Bridge
Sami manhajar Green Bridge CBT a wayarka ko kwamfutarka domin cikakken laburaren IGCSE: takardun jarrabawar baya, tsarin kimantawa, taswirar tunani, katunan karatu da darussan sauti.
Nazarin Darasi
Barka da kammala darasi akan Disease Control. Yanzu da kuka bincika mahimman ra'ayoyi da ra'ayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- Which conditions are most likely to encourage fungal diseases? A. Dry and cool B. Dry and warm C. Wet and cool D. Wet and warm Answer: D
- Maize streak virus is spread from plant to plant by: A. Rain splash B. Leafhoppers C. The wind alone D. Contaminated tools Answer: B
- Cassava bacterial blight is caused by a: A. Virus B. Fungus C. Bacterium D. Nematode Answer: C
- The most effective way to control a viral disease of a crop is usually to: A. Spray a fungicide B. Grow resistant varieties and control the insect carrier C. Add more fertiliser D. Water the crop more often Answer: B
- Which practice helps control a fungal disease by keeping the crop drier? A. Closer spacing of plants B. Flooding the field C. Wider spacing and good drainage D. Leaving infected plants in place Answer: C
Yi aikin wadannan tambayoyi a cikin manhaja
Yi aikin wadannan tambayoyi a cikin manhaja
Littattafan da ake ba da shawarar karantawa
Ƙarin koyo daga tushe na buɗe
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Sashen littafi
Fungal Parasites and Pathogens
Describe fungal parasites and pathogens of plants
"Biology: Fungal Parasites and Pathogens" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/24-4-fungal-parasites-and-pathogens. Access for free at https://openstax.org/books/biology/pages/1-introduction
Wasu ƙungiyoyi ne suka wallafa su ƙarƙashin lasisin buɗe, kuma muna ambaton su yadda suka nema. Hanyoyin suna buɗe shafukansu.
Yi Aikin Tambayoyin Gwaji
Kana son yin aikin tambayoyin gwaji kan Disease Control? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.
Sauke Manhajar Daga Google Playstore
Duk abin da kake buƙata don yin fice a JAMB, WAEC & NECO.
