It is most pronounced during the refoliation period (February-March). Their greatest impact is associated with the disease mealy bug wilt of pineapple (MW) (Rohrbach et al., 1988). Avoid accumulation of rubber at the base of the trees. Manuring the rubber trees … Diseases of Fruit, Plantation, Medicinal and Aromatic Crops-: Course content creator :-Dr. V. B. Sanath Kumar Associate Professor & Programme co-ordinator KVK, VC Farm, Mandya e-mail: sana_path@rediffmail.com Spray Sulphur 50 WP at 2 g/lit or spray Dicofol 18.5 EC 2.5 ml/lit. Palmyrah 228 Urea @550 kg /ha -3 to 3.5 months. For immature rubber trees at pre-tapping stage and also raw materials for … The trees can be tapped for their latex sap once they have reach six years of age. Uses of the Rubber Tree (Hevea brasiliensis) Natural rubber is used in the production of tires. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Planting: Pit size of 1 m3 are dug and filled up with top soil and compost. It is one of the highly common diseases seen in rubber trees. The major symptoms of the disease in leaves are wilting and drooping and flaccidity; ribbing, paling/yellowing and necrosis of leaflets are typical symptoms of foliar diseases. Lecture 6.Diseases of Guava . Tapping panel dryness (Brown bast) RUBBER Avoid accumulation of rubber at the base of the trees. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. You can change your ad preferences anytime. Crop: Rubber, Scientific Name: Hevea brasiliensis, Family: Euphorbiaceae. the others removed. Give balanced manuring to increase tree vigour. starting right at the grafting point situated in the transition zone between the trunk and the roots, the collar. See our Privacy Policy and User Agreement for details. Symptoms often appear on one section of the plant. Domestic quarantine 7. 1.5 – 2 months after planting –10:10:4:1.5 NPKMg mixture -2500 kg/ha. It is expressed by a deterioration of the cortical tissues on the level of which are located in the conducting latex tissues. It is caused by the fungus Phellinus noxius. Dr. Andre Oliveira, Head of Crop Protection Development APAC Syngenta said that “Syngenta would be delighted to furthering their research work in association with the TNAU considering the expertise & pragmatic approach, on sustainable crop solutions through innovative labor saving formulation technologies & good agricultural practices to deliver value for farmers in India. Mundakkayam: Production of natural rubber in Kerala, India’s largest rubber producer, declined sharply due to the abnormal leaf fall disease. The control measures suggested for abnormal leaf fall will check this disease also. Method of propagation Ethrel is recommended to increase latex yield of trees. Seedling Nursery: Tropical climate with annual rainfall of 2000 – 4500 mm is suited for cultivation. They may infest developing plants and fruit, thereby becoming serious pests to the crop, reducing fruit quality and quantity by infuencing plant development (Carter, 1933). It requires deep and lateritic fertile soil with an acidic pH of 4.5 to 6.0 and highly deficient in available phosphorous. The diseases persist in the soil on infected dead roots. Season Syndrome characterized by prolonged dripping of latex with the gradual decline in volume yield, pre coagulation of latex and partial or complete drying of tapping area (10-25 per cent). When the fungicide dries up apply wound dressing compound. Brown root disease It is the major root disease of rubber in India. Chemical methods : - Use of attractants - Use of repellants - … Wash the wound again with fungicide solution. Diseases & Pests of the Rubber Tree Southern Blight. BARK NECROSIS(BN) The necrosis of the rubber tree is an affection of the stem. Coconut 212 vii. Scale insect 2) Horticulture - Deals with the production of fruits, vegetables, flowers, ornamental plants, spices, condiments and beverages. Crude oil is the primary raw material used in the production of synthetic rubber. However, continuous application of Ethrel is not recommended for periods of more than 3 years at a stretch. Secondary leaf fall Spray 1% Bordeaux mixture or 0.2% Mancozeb, or 0.1% Carbendazim at fortnightly intervals. Terms like IPM (Integrated Pest Management and IDM (Integrated Disease Management) have different meanings. Refill the soil and drench the base with fungicide solution. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. When it affects the rubber tree, you can see small oozing spots appearing around the leaves. Causative agent: Phytophthora meadii McRae. heart-disease, LDL oxidation, immune-system, diabetes, cancer Fiber most fresh fruits and vegetables, nuts, cooked dry beans and peas diabetes, heart disease Folate ... of other industries e.g. Prune off and burn the dried up branches after disinfecting by Bordeaux spraying. months and rested for the next 4 months. Diseases; Parasitic and non-parasitic maladies; Bee Keeping in rubber plantations; Diseases. Minimum and maximum temperature should be ranged from 25 to 34°C with 80 % relative humidity is ideal for cultivation. Symptoms of brown root rot disease are similar to those caused by many root rot pathogens: The first application may be done after a drought period preferably after a few pre-monsoon showers and subsequent applications may be done in September and November. Diseases Xanthomonas leaf spot is caused due to a bacteria named Xanthomonascampestris. Matured rubber trees under tapping In South India, the annual yield of rubber is 375 kg/ha from seedlings trees, whereas budded plants yield 800 - 1000 kg/ha. Rubber yield steeply increases year by year, reaching a peak after 14 years of planting. Diseases of Field Crops and Their Management Author TNAU, Tamil Nadu . For matured rubber trees under tapping apply NPK 10:10:10 grade mixtures at the rate of 900 g/tree (300 kg/ha) every year in two split doses. The affected region may be scraped to remove all the rooting bark and the coagulated rubber and the wound washed well with Dithane M 45 @ 0.75 %. In advanced cases apply Bordeaux paste and when it dries up scrape off the superficial mycelium and damaged bark and apply Bordeaux paste once again. The sap flows from the trees once a piece of the bark is removed. IARI Toppers Provides Agriculture Notes,ICAR E Course Notes,JRF Notes,IBPS AFO,E krishi Shiksha,TNAU Notes,ANGRAU Notes,Agriculture Jobs Update,JRF Mock Test,JRF Old Exam Paper for agronomy horticulture,plant science,agriculture statistics,soil science,social science,icar ecourse pdf download,best agriculture books etc Propagated by green budding, brown budding and crown budding. "Vast swathes of rubber trees have already been lost to the Fusicoccum pathogen, and more losses are due until a concrete solution is found to combat this dilapidating disease," Muruganathan wrote. Control At the start, it grows and surrounded by yellow discolorations. Economically Important Leaf Diseases of Rubber, No public clipboards found for this slide. Causative agent: Oidium heveae Powdery mildew is the most widespread cause of the diseased condition of rubber known as secondary leaf fall (SLF). Regulatory methods : - Plant quarantine a.             Stump budding – 60 x 60 cm             Budded stumps – 30 x 30 cm c. Propagation and dissemination of specific bacterial, viral, fungal and protozoan diseases. Repeated sprayings with Bordeaux mixture 1% or Mancozeb or Copper oxychloride 0.2%. Completely killed and dried roots may be traced and pruned. Young plants dry up due to attack. Freshly planted rubber trees remain healthy until their roots come into contact with pieces of diseased root. Genetic methods : - Use of sterile male technique 6. Apply 10:10:4:1.5 NPK andMg as per schedule given below: Apply 400 kg of mixture/ha in 2 doses, once in April/May and another in September/October from the 5th year till the tree is ready for tapping. It makes the leaves turn yellow and die. Clipping is a handy way to collect important slides you want to go back to later. Wash the wound again with fungicide solution. Growing of cover crops, incorporation of cover crops and weeding are important operations. Infected plants first develop a dull green color, eventually wilt and turn straw-color. Oil Palm 225 ix. concentration with a brush below the tapping cut to a width of 5 cm after light scraping of the outer bark. Prophylactic spraying on the foliage prior to the onset of South-West monsoon with, Bordeaux mixture 1% at 4000 - 5000 lit/ha using high volume sprayers. Now customize the name of a clipboard to store your clips. December 13, 2020 Uncategorized Uncategorized (half spiral, alternate day for 6 months and rested for 3 months), (half spiral, daily for one month and rested for next Open up the root system. Cuttings should be obtained from virus – free indexed stocks. The stem with brown bark is affected anywhere from the base to branches. The fungus, Thielaviopsis paradoxa is the causal agent of the disease. Wet weather and high relative humidity are favourable for disease development. 5. It is leading to the cessation of latex production, showed differences in latex biochemical characteristics, attacks the tree vascular tissues. A fungal disease declared as a quarantine pest •Sclerotium collar rot(Sclerotium rolfsii) Nursery disease spread due to mal practices •Foot Canker & Sudden wilt (Nattrassia mangiferae) Secondary infection on cracks resulted due to heat injury Lecture 7.Diseases of Apple . If you continue browsing the site, you agree to the use of cookies on this website. Drench the soil at the base of affected plants with Chlorpyriphos 20 EC 2 ml/litre. Lecture 8. In man's continued effort to enhance food production, new high yielding crop varieties and new techniques for crop and field management are being constantly evolved resulting in a parallel increase in disease occurrence which calls for their efficient management. Diseases Root rot:Soil drenching with Copper oxychloride 2.5 g/lit or Trifloxystrobin + Tebuconazole @ 0.75 g/litre or Difenoconazole @ 0.5ml/l Leaf spot: Foliar application of Mancozeb @ 2.5g/l or Azoxystrobin @ 1g/l Chrysanthemum mosaic disease 1. 3) Forestry – Deals with production of large scale cultivation of perennial trees for supplying wood, timber, rubber, etc. Aftercultivation Drench soil at the base of plants in the affected area with the solution of Chlorpyriphos 20 EC 2 ml/litre. When it dries up apply a wound dressing compound. Spacing: Seedling stumps – 23 x 23 cm, 30 x 30 cm and 34 x 20 cm When severe infestation is noticed, spray Organophosphorus insecticides like malathion 50 EC 2 ml/lit. GROUP : E. Affected bark and wood show black lines. Caused by the fungus Sclerotium rolfsii, southern blight is an easily preventable moisture-related... Crown Gall. Lecture 1.Diseases of Citrus. Brown root disease Open up the root system. Rubber (Hevea brasiliensis Muell-Arg.) 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