Lecture 5.Diseases of Pomegranate and Papaya. Dusting during the defoliation period commencing from the bud break in about 10% of the trees, giving 3 to 5 rounds at weekly to fortnightly intervals before 10.00 a.m. using 11 to 14 kg 325 mesh fine Sulphur dust per round per ha. It is expressed by a deterioration of the cortical tissues on the level of which are located in the conducting latex tissues. Season Crop Pests and Diseases. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Book Detail: Language: English Pages: 172 Author: TNAU Price: Free . When it dries up apply a wound dressing compound. Infected plants first develop a dull green color, eventually wilt and turn straw-color. Their greatest impact is associated with the disease mealy bug wilt of pineapple (MW) (Rohrbach et al., 1988). 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 Oil Palm 225 ix. c. Propagation and dissemination of specific bacterial, viral, fungal and protozoan diseases. Sulphur dust can be mixed with talc in the proportion of 7:3. OF 1. months and rested for the next 4 months. Partially affected and healthy roots washed withfungicide Carbendazim (0.1%) solution. Urea @550 kg /ha -3 to 3.5 months. Aftercultivation Ethrel treatment These trees widely found in the Amazon and bring profit to many indigenous tribes. Mealy bug Healthy ones are retained and The fungus survives in nurseries, self-sown seedlings, and in immature leaves of the shaded canopy. Mean percent disease incidence of coconut from 2008 –2013 S. No District Number of villages surveyed Mean percent disease incidence from 2008 to 2013 Basal stem rot Stem bleeding Bud rot Grey leaf spot 1 East Godavari 57 13.82 3.49 1.93 Traces 2 West Godavari 15 11.42 4.94 2.12 Traces 1.5 – 2 months after planting –10:10:4:1.5 NPKMg mixture -2500 kg/ha. 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. Growing of cover crops, incorporation of cover crops and weeding are important operations. Lecture 3.Diseases of Banana. Patch canker or Bark cankers Open up the root system. For immature rubber trees at pre-tapping stage 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. Wettable sulphur (1 kg in 4000 lit of water) is also effective in nurseries and for young plants as a spray. COMMON PESTS & DISEASES 2. Domestic quarantine 7. 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. concentration with a brush below the tapping cut to a width of 5 cm after light scraping of the outer bark. It is applied at 5% a.i. Terms like IPM (Integrated Pest Management and IDM (Integrated Disease Management) have different meanings. Release Austalian lady bird beetle, Cryptolaemus montrouzieri @ 10/tree. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads.  Manuring: Basal -2.5 t/ha of FYM and 350kg/ha of Rock Phosphate. the others removed. Abnormal leaf fall 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. Oil based Copper oxy chloride using low volume sprayer or through aerial application. Secondary leaf fall Soil and climate Now customize the name of a clipboard to store your clips. Planting: Pit size of 1 m3 are dug and filled up with top soil and compost. Bird's eye spot aggravates the disease. When it dries up apply a wound dressing compound. Coconut 212 vii. Symptoms: Termites feeds on the dead bark of trees and young plants and build covered passageways of soil on the tapping panel and collection cup. There are two types of rubber, natural rubber from rubber trees and synthetic rubber made by using petrochemicals. The symptoms appear as loss of shiny appearance of leaves drooping, yellowing and buckling (curving) of leaflets and … It is leading to the cessation of latex production, showed differences in latex biochemical characteristics, attacks the tree vascular tissues. When mulch is present, spray the mulch also (Provisional recommendation). Abnormal leaf fall. rubber, oil, gum, dyes, chemicals etc. In situ sowing: Germinated seeds are sown in situ in the pits. It is most pronounced during the refoliation period (February-March). Wash the wound again with fungicide solution. Spray 1% Bordeaux mixture or 0.2% Mancozeb, or 0.1% Carbendazim at fortnightly intervals. Lecture 6.Diseases of Guava . Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Clean up affected areas, by washing with Carbendazim (0.1%) solution. Uses of the Rubber Tree (Hevea brasiliensis) Natural rubber is used in the production of tires. Two rounds of spray using about 17 to 22 lit of fungicide oil mixture per ha per round (1:6 proportion) at 10 to 15 days interval (or) a single round of spray with about 30 - 37 lit of fungicide oil mixture per ha (1:5 proportion). Brown root disease Minimum and maximum temperature should be ranged from 25 to 34°C with 80 % relative humidity is ideal for cultivation. Control Brown root disease Open up the root system. The fungus, Thielaviopsis paradoxa is the causal agent of the disease. GROUP : E. Search for: diseases of wheat tnau. Affected bark and wood show black lines. December 13, 2020 Uncategorized Uncategorized Lecture 1.Diseases of Citrus. Tjir 1, PB 86, BD 5, BD 10, PR 17, GT 1, RRII 105, RRIM 600, PB 28/59, PB 217, PB 235, RRIM 703, RRII 5, PCK-1, 2 and PB 260. Pink disease is the most serious stem disease of affecting mainly the young rubber trees. Refill the soil and drench the base with fungicide solution.             Bud wood nursery – 60 x 90 cm or 60 x 120 cm. In South India, the annual yield of rubber is 375 kg/ha from seedlings trees, whereas budded plants yield 800 - 1000 kg/ha. Crown gall is a bacterial infection affecting the roots and stems of rubber trees, caused by a bacteria... Xanthomonas Leaf Spot. Avoid accumulation of rubber at the base of the trees. Tropical climate with annual rainfall of 2000 – 4500 mm is suited for cultivation. Disease management Vascular wilt (F.oxysporum f.sp. Scrape out the fructifications.             Budded stumps – 30 x 30 cm Clean up affected areas, by washing with Carbendazim (0.1%) solution. Provide shade in nursery. Manuring Working out cost of cultivation and economics. Pests Lecture 2.Diseases of Mango. Reduce tapping intensity or give a tapping rest for 3 to 12 months. Symptoms. Wet weather and high relative humidity are favourable for disease development. Add 10 kg commercial Magnesium sulphate for every 100 kg of the above mixture if there is magnesium deficiency. Cockchafer grub Spacing: Seedling stumps – 23 x 23 cm, 30 x 30 cm and 34 x 20 cm Plant protection However, continuous application of Ethrel is not recommended for periods of more than 3 years at a stretch. Brown root disease It is the major root disease of rubber in India. It is observed during the monsoon period. 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). Powdery mildew Mites Xanthomonas leaf spot is caused due to a bacteria named Xanthomonascampestris. Regions prone to heavy winds should be avoided. 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. Propagated by green budding, brown budding and crown budding. There has been a … Scale insect Clipping is a handy way to collect important slides you want to go back to later. Tapping panel dryness (Brown bast) Spray Sulphur 50 WP at 2 g/lit or spray Dicofol 18.5 EC 2.5 ml/lit. When the fungicide dries up, a thin coating with a wound dressing compound may be given. Diseases Spray fish oil rosin-soap 25 g/lit. It makes the leaves turn yellow and die. Pink disease June – July is optimum for cultivation. It is caused by the fungus Phellinus noxius. Crude oil is the primary raw material used in the production of synthetic rubber. 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. Rubber (Hevea brasiliensis Muell-Arg.) month), Half circumstances and cut alternate day for 12 Management: Drench the soil at the base of affected plants with chlorpyriphos 0.1% solution. The most serious diseases of rubber are root diseases which are caused by fungi that attack and eventually kill the roots. Drench soil at the base of plants in the affected area with the solution of Chlorpyriphos 20 EC 2 ml/litre. 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). Manuring 5. 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. Symptoms of brown root rot disease are similar to those caused by many root rot pathogens: A manual on the most important pests and diseases of the major food crops grown by smallholder farmers in Africa. 5. Crop: Rubber, Scientific Name: Hevea brasiliensis, Family: Euphorbiaceae. and also raw materials for … Genetic methods : - Use of sterile male technique 6. Prune off and burn the dried up branches after disinfecting by Bordeaux spraying. dianthi) Vascular wilt is the most troublesome disease of carnation. The stem with brown bark is affected anywhere from the base to branches. Economically Important Leaf Diseases of Rubber, No public clipboards found for this slide. Lecture 8. Rubber yield steeply increases year by year, reaching a peak after 14 years of planting. It requires deep and lateritic fertile soil with an acidic pH of 4.5 to 6.0 and highly deficient in available phosphorous. Dry rot, Stump rot, Collar rot or Charcoal rot Leaf spot Causative agent: Oidium heveae Powdery mildew is the most widespread cause of the diseased condition of rubber known as secondary leaf fall (SLF). COURSE OUTLINE: Disease of Horticultural Crops & Their Management. Young plants dry up due to attack. The sap flows from the trees once a piece of the bark is removed. 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