Rubber tree disesae
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Disease of horticulture crop and there management. The presentation is all about disease of rubber tree . It only covers the major disease of rubber tree in india.there are four type of diseases 1.stem 2.panel 3.leaf 4.root.
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Rubber diseas
This document discusses common pests and diseases that affect rubber trees. It outlines several categories of diseases including leaf diseases, stem diseases, panel diseases, and root diseases. Some key leaf diseases mentioned are Colletotrichum secondary leaf fall and Oidium secondary leaf fall. Important stem diseases include bark necrosis, ustulina stem disease, and pink disease. The document also covers common pests such as termites, slugs and snails, mites, mealybugs, and scale insects. It provides details on symptoms and control methods for many of the major diseases and pests that can impact rubber production and economics.
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Wilt is a pernicious disease of guava in India.
In India the disease was first recorded near Allahabad in 1935 . The infection was reported 15 -30 %.
The disease is a serious threat to guava cultivation in U.P. In West Bengal it reduces the yield in affected orchard by 80% .
The disease is also prevalent in Haryana Rajasthan , A.P ,
Punjab and M.P.The exact cause of the disease is still not fully understood but the pathogens viz. Fusarium oxysporum f. sp. psidii (Prasad, Mehta & Lal), Rhizoctonia spp. (Taub.) and various pathogens are reported by different workers may be the incitant of the disease.
Survival and spread:
Through movement of plants containing sick soil in virgin areas.
Short distance spread is by water.
Root injury predisposes wilt disease.
It has forced uprooting of about 150 acre of guava orchard in Panjab and 300 acres in Haryana during 1971-81.
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Guava diseases ppt
Wilt is a pernicious disease of guava in India.
In India the disease was first recorded near Allahabad in 1935 . The infection was reported 15 -30 %.
The disease is a serious threat to guava cultivation in U.P. In West Bengal it reduces the yield in affected orchard by 80% .
The disease is also prevalent in Haryana Rajasthan , A.P ,
Punjab and M.P.The exact cause of the disease is still not fully understood but the pathogens viz. Fusarium oxysporum f. sp. psidii (Prasad, Mehta & Lal), Rhizoctonia spp. (Taub.) and various pathogens are reported by different workers may be the incitant of the disease.
Survival and spread:
Through movement of plants containing sick soil in virgin areas.
Short distance spread is by water.
Root injury predisposes wilt disease.
It has forced uprooting of about 150 acre of guava orchard in Panjab and 300 acres in Haryana during 1971-81.
Bhendi shoot and fruit borer
Bhendi shoot and fruit borer, which is highly destructive to the bhendi crops, damaging most of the economic part of the crops,yield of crop will reduce and fruit become unsuitable for the consumption .
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This document summarizes the ear-cockle and yellow ear-rot diseases of wheat caused by Anguina tritici. It describes the nematode's diagnostic characters, life cycle, symptoms, interaction with other pathogens like Clavibacter tritici which causes more damaging tundu disease, and control methods like seed cleaning and use of certified seed. While the nematode acts as a vector for the bacterium, under favorable conditions for the bacterium, it multiplies rapidly creating an environment where the nematode cannot survive.
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Pest risk analysis and detection and diagnosis. ppt.pptx
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Cup-shaped flowers solitary or clustered, axillary or sub-terminal, fascicles at or near the ends of the branches, when the tree is bare of leaves, an average of 7–11 centimetres (2+5⁄6–4+1⁄3 in) wide, 14 centimetres (5+1⁄2 in) in width, petals up to 12 centimetres (4+2⁄3 in) in length, calyx is cup-shaped usually 3 lobed, an average of 3–5 centimetres (1+1⁄6–2 in) in diameter. Staminal tube is short, more than 60 in 5 bundles. The stigma is light red, up to 9 centimetres (3+1⁄2 in) in length, ovary is pink, 1.5–2 centimetres (2⁄3–5⁄6 in) in length, with the skin of the ovary covered in white silky hair at 1mm long. Seeds are numerous, long, ovoid, black or gray in colour and packed in white cotton.
Huge trunk of Red Cotton Tree
Immature fruits of Bombax ceiba in Hong Kong.
The fruit, which reaches an average of 13 centimetres (5 in) in length, is light-green in color in immature fruits, brown in mature fruits.
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App 301
This document provides information on diseases that affect horticultural crops like citrus. It discusses several diseases in detail, including their symptoms, economic importance, favorable conditions, and management strategies. The diseases described include gummosis caused by Phytophthora species, Diplodia gummosis, dry root rot caused by a fungal complex, citrus scab caused by Elsinoe fawcetti, citrus canker caused by Xanthomonas axonopodis pv. citri. For each disease, the document discusses the pathogens involved, symptoms on leaves, fruits or roots, and integrated measures to control the diseases.
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Study on major diseases of major crops in Bangladesh
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Fungal diseases of fruit crops grapes
This document discusses 22 fungal diseases that affect fruit crops like grapes. It provides the symptoms and control methods for each disease. The diseases include anthracnose, angular leaf spot, powdery mildew, downy mildew, black rot, botrytis bunch rot, eutypa dieback, and phymatotrichum root rot. The symptoms vary by disease but include spots or lesions on leaves, stems, and berries. Some diseases cause premature defoliation while others cause berries to rot or become misshapen. Control methods include fungicides, removing diseased plant material, and cultural practices like pruning and irrigation.
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Rubber tree disesae
- 1. Disease of horticultural crops and their management By- PARTH PATIDAR
- 3. RUBBER TREE Hevea brasiliensis, the Pará rubber tree, sharinga tree, seringueira, or, most commonly, the rubber tree or rubber plant, is a tree belonging to the family Euphorbiaceae. It is the most economically important member of the genus Hevea because the milky latex extracted from the tree is the primary source of natural rubber.
- 5. The first commercial Hevea plantations were established at Thattekadu in Kerala in 1902. In later years the plantation expanded to Karnataka, Tamil Nadu and the Andaman and Nicobar Islands of India. India today is the world's 3rd largest producer and 4th largest consumer.
- 6. Diseases of Rubber tree LEAF DISEASES ● Oidium secondary leaf fall ● Bird’s eye spot STEM DISEASE ● Bark necrosis ● Pink disease PANEL DISEASE ● Black strips ● Mouldy rot ROOT DISEASE ● Red root disease ● White root disease
- 7. LEAF DISEASE OIDIUM SECONDARY LEAF FALL C.O.- Oidium heveae (fungus) (Powdery mildew) ● Infect mostly to young shoots that refoliate after wintering Sign of attack is presence of numerous leaves let on ground. SYMPTOMS - leaf defoliation Young leaves covered with Powdery mildew. EFFECT- Reduces latex yield.
- 8. Control- ● sulphur dusting may prevent oidium secondary leaf fall. ● Field sanitation.
- 9. STEM DISEASE C.O.-Corticum salmonicolor (fungus) SYMPTOMS:- ● Pink colour mycelia growth on the bark surface with streaks on latex oozing out from the lesions. ● More damaging for plant in the age group of 2 to 12 years ● Main seat of infection is usually the fork region ● Sprout developed from below the affected portion. CONTROL:- PINK DISEASE
- 11. BLACK STRIPE DISEASE C.O.- phytophthra palmivora, p.meadii SYMPTOMS:- Renewed bark region ● Small depression are formed due to localized rotting. ● During of bark which get pressed to the wood. ● When scrapped vertically blank line running downward into tapping bark & upward into the renewed barked. ● Reduces yield ● Renew bark highly uneven. CONTROL:- ● Spray or brush fungicide to the panel. PANEL DISEASE
- 13. Root disease C.O.-Rigidoporus lignosus SYMPTOMS:- Root infection, colonization within the taproot & other part of the root. ● Foliage discoloration ● Tree branch die back ● Tree eventually die White root rot disease