Main diseases are wilt, fruit canker, fruit rot, anthrachose, and grey leaf spot. foliage are mostly effected under high relative humidity, With cotton like growth covered the inffected In this Article we will discuss Guava Cultivation. Scabby canker disease was the main focus of our study due to the prevalent nature of the problem. fruit that provides good income to the growers. Guava is an Apply Bordeaux mixture or copper based Estimation of morphological, biochemical and genetic diversity in pomegranate (punica granatum... 10 best agriculture website for farmers in Pakistan, In this diseases pathogen mostly attack 4gm/lit. Under irrigated conditions guava yields about 100-150 kg fruit for 8 years and above age trees. How ever, if you want to know how Guava is a medicine for modern diseases, you can also plan to get the book from here . fungicides like Ziride, Mostly recommended spray of Bordeaux Harsh pruning followed by a drench with Guava diseases are among the most important factors in guava production or farming, which cause a major loss in guava fruit yield and vigor. Guava plantation requires less care compared to other fruit crops. Oval shape fruit green to yellow in color. Indian Phytopathology, 48: 86–89. wet condition, Air borne diseases mostly spread through 3. Algal leaf spot is a disease of guava plant, which is caused by parasitic algae. “Guava: Diseases and symptoms” https://vikaspedia.in/agriculture/crop-production/integrated-pest-managment/ipm-for-fruit-crops/ipm-strategies-for-guava/guava-diseases-and-symptoms retrieve on 20/05/2020, “Guava disease information” https://www.gardeningknowhow.com/edible/fruits/guava/common-guava-diseases.htm retrieve on 20/05/2020, “”Guava” https://plantvillage.psu.edu/topics/guava/infos retrieve on 20/05/2020, “Guava diseases” https://www.slideshare.net/AnurAgKerketta/diseases-of-guava retrieve on 20/05/2020, Misra, A.K.. (2003). Guava (Psidium guajava L.) is an important fruit of subtropical countries. 7 Guava rust symptoms on fruit Fig. Guava Diseases – their Symptoms, Causes and Management. spots appear on the leaves, Crater like appearance is more observed Horticulture MCQ's- Horticulture is a Major branch of Agriculture. Jazan region, southwest corner of Saudi Arabia, is noted for its high-quality production of some tropical and subtropical fruits including mango, fig, guava, banana, papaya, and avocado (Basha 1998).In the past two decades, the root-knot nematodes, Meloidogyne spp. Symptoms. After fruiting, picking up fallen debris, thinning your guava and increasing air circulation by moving close-by plants further away can help prevent reinfection. Ounce for ounce, fresh guava contains more than 4 times the amount of vitamin C found in oranges. fungicides if plant seriously infected. Let us start with guava disease number one: Anthracnose is a common fungal disease that is affecting most plants including guava. Sacc. In this disease pathogen mostly attack 2.2 Fruit rot: Phytophthora nicotianae Dastur, P. nicotianae Breda de Haan var. were found associated with post-harvest diseases of guava and Pestalotia psidii was isolated from all the fruit markets surveyed. Pathogen can be able to cover The pathogen of stem canker can be distributed from plant to plant through: This is another pathogenic disease of guava that is caused by a fungus. Leaf extracts of Neem and Tulsi (Azadirachta indica and Ocimum. The genus Psidium is composed of approximately 150 species of evergreen trees and shrubs in the American tropics.A good taxonomic classification of this genus is lacking. and arsenic oxide completely inhibited spore germination.it can also inhibit Management of dry rot through the use of Rain splashes, wind encourage the spore in Blog February 13, 2018. … become hard, mummified malformed and drop. mixture and copper oxychloride. Kothari (1968) recommended weekly spray During the summer, prices are lower due to the increase in supply and vice-versa in the winter. Management: 1% Bordeaux mixture or lime-sulphur (1in 25) – 3 or 4 sprayings. According to (PCRSC) survey of Pakistan (2015-16) 70026 hectare area under guava cultivation and its production is 414649 tons annually. Management: The spread of disease (in early stage of infection) is controlled by 3 to 4 sprays of 1 per cent Bordeaux mixture or lime sulphur at 15 days interval. Symptoms: The disease generally occurs on green fruits and rarely on leaves. Physalopara psidii Stevens &Pierce and Diplodia netalensis Evans. Through infected foliage moment of plant air or rain splashes, On the infected plant debris pathogen Favourable conditions ... the small sunken lesions coalesce to form large necrotic patches affecting the flesh of the fruit ; Management. But vitamin C is just one of the many health-benefiting compounds this exotic super-fruit provides. Bronzed guavas result from low soil fertility and pH. Guava (Psidium guajava), the apple of tropics, is one of the most common fruits in India.It is the fourth most important fruit in area and production after mango, banana and citrus. Control measures of the major diseases are briefed below: Related Posts. brown spots generally at the stalk or calyx end, The entire fruit becomes dark brown to Guava (Psidium guajava Linn.) Investigation on wilt disease of guava (. The fruit fly, mealy bug, scale insects, etc. It is originated in tropical America, from Mexico to Peru and today is commercially grown in South Asia, Hawaiin Islands Sri Lanka, Cuba, Myanmar and India. In India, the guava is grown in … The Guava, Psidium guajawa is one of the important fruit crops grown in India. Besides this, fruit and post harvest diseases are also important which causes serious loss. Treat guava plant with 0.1% water ), C. parasiticus] Symptoms: Alga infects immature guava leaves during early spring flush. 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Disease management The important diseases of guava are wilt, anthracnose, die back, canker, fruit rot, and dry rot, Styler end rot and seedling blight Pest Management The insect pest mostly seen are fruit fly, green shield scale, Mirid bug, Mealy bug, Bark eating cater pillar and tea musquito bug. Canker is also a common disease in guava orchards. on this nutritious fruit crop as well as due to lack of knowledge among farmers PH wash with aureofungin (200ppm) can protect fruits for 5 days. leaves, twigs and mummified in the orchard infection spreads. In India only four serious diseases are known, namely, canker caused by Physalospora psidii (Uppal, 1936), anthracnose caused by Pestalozia psidii (Narsimham, 1938) and Glceosporium psidii (Tandon and Agarwal, 1954), and fruit rot due to Phytophthora parasitica (1934). through root injury. Management: The spread of disease (in early stage of infection) is controlled by 3 to 4 sprays of 1 per cent Bordeaux mixture or lime sulphur at 15 days interval. Related: Cercospora leaf spot of guava symptoms and management. Further, Horticulture is divided into three branches. So, we should have to • Eco-friendly approach of guava wilt control is suggested where biological control (Trichoderma spp., Aspergillus niger AN27), soil amendment (lime, neem cakes, gypsum) and intercropping (marigold, turmeric) are effective. 2. Without canopy management closer of Agriculture, University of Sargodha. Use of canker resistant cultivar like Safeda and Apple colour. The most common diseases of guava causal organisms are species of fungi and bacteria. prevent spread of disease. (Table 1). observed in vascular tissue, For long duration stagnation of water in Once a fruit is infected, it’s not salvageable, but you can protect the rest of your crop with a fungicidal spray. of monsoon appearance of light foliage with the loss of epinesty & turgity, Roots of the plant also show rooting at One of the most gregarious of fruit trees, the guava, Psidium guajava L., of the myrtle family (Myrtaceae), is almost universally known by its common English name or its equivalent in other languages. 1968. planting. area which develops very fast as fruit matures. coalesie. and have minute black stromata in the center of lesion, in moist weather The use of a sticker and increasing the number of sprays from four to seven resulted in significantly greater reduction of fruit infection. Principles of disease management in fruit crops Volume 4 Issue 5 - 2017 SK Thind Punjab Agricultural University, India ... Canker–a canker is diseased area on leaves, branches, ... Fruit plants like mango, citrus, guava, grapes, pome and stone fruits, banana, pomegranate, strawberry etc. 2.3. It is an economic lesion appear especially on the tip of leaf, areas or margins adjacent the mid The symptoms of the disease have been described in detail. black & mummified with 4 days, Twing bearing infected fruits show i) Prune dead twigs, remove mummified fruits hanging on the trees and burn. But due to attack of diseases On fruits, canker lesions reduce market value. psidii and F. solani (Mart.) The guava plant starts commercial yield from 3 rd year onward under good management practices. of Bordeaux mixture and copper oxychloride. Guava rust: Puccinia psidii symptoms The pathogen can affect foliage, young shoots, inflorescences and fruit of guava. 56 Destruction of infected plant parts, regular inspection and seedling certification have been recommended as preventive measures for mango bacterial canker. Our study identified and determined the cultural characteristics of the main species of Pestalotiopsis affecting guava using morphological and physiological comparisons controls the disease effectly. soluble 8 quinolinol sulphate .it may provide protection to the plant for at an important fruit of subtropical countries is affected by about 177 pathogens of which, 167 are fungal, 3 bacterial, 3 algal, 3 nematodes and one epiphyte. Misra, A.K., Om Prakash and Pandey, B.K. Seedling trees require 4 to 5 years to bear. Anthracnose can be distributed through the following ways: Want to Learn more and see picture? Maturing guava must be harvested quickly as birds and insects will readily attack ripe fruit. The symptoms of this disease occur We hope this article gives you excellent help in understanding the different types of diseases of guava. Chibber, H.M. 1911. and Mathur, K. 1980. Algal leaf spot is spread or distributed through the following ways: Planting of guava on a prone or infected areas, Appearance of lesions that are tiny and shallow brown on leaf tips and margins around the midvein, The lesions can enlarge up to 2-3mm in diameter, A thin grey-white or dark-colored necrotic spot may be seen on the leaves, if the tufts are removed, The young shoots and fruits of guava plant might  be attacked by the disease, Lesions on immature fruits are almost black, which are sunken and cracked as fruits enlarge, This type of algae survives well on wet areas, Reduce moisture and water around the guava plant, Disease can be controlled by applying copper based fungicide, Infected fruits and leaves may spread the disease through transportation, Appearance of minute irregular or rough round dark brown lesions, The lesions affect the upper surface of leaves, Lesions  can be found on stems and fruits, If the conditions are favorable, the fungus may produce a spores  and some grey tufts of mycelium can be seen on the center of the lesions, The lesions can combine to form a large patches of necrotic tissues, The fungus survives well during wet and humid conditions, Heavy rainfall and watering may also help with growth of the disease, Prune timely to avoid dense canopy and moisture, Copper based fungicides are also helpful in the management, Transportation of infected leaves and fruits from a place that is dominated by the pathogen. important fruit crop of Pakistan and grown on large scale. 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