mature fruit and leaves indicated that certain guava varieties exhibited potential sources of host resistance to scabby canker caused by Pestalotiopsis spp. become hard, mummified malformed and drop. Today, the common guava ( Psidium guajaba ) is grown in places as far apart as Florida, Hawaii, India, Egypt, and Thailand. produce on the surface of diseased tissues principally by pathogen when 4. This is a fungal pathogen that affect guava plant leaves, fruits, and shoots. corky and in case of severe infection often develops cracks. National Eligibility Test and Common Entrance exams are major agricultural competitive exams. are the major pests in guava. fungicides like Ziride, Mostly recommended spray of Bordeaux Physalopara psidii Stevens & Pierce and Diplodia netalensis Evans.] They Some major and impressive guava benefits on human health are; it manage blood pressure, help in digestion, weight loss, improve immunity system, healthy eyes, prevent from cancer. It is hardy crop and is cultivated successfully even in neglected soils. Distribution of guava wilt in relation to age, soil type, management practices and varieties grown in Haryana. Guava is fourth most important fruit crops after banana, mango, and citrus. 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. Guava rust: Puccinia psidii symptoms The pathogen can affect foliage, young shoots, inflorescences and fruit of guava. In the present communication some major diseases are describe with their symptom and disease management practices. Your email address will not be published. We would love to hear from you. The fruit fly, mealy bug, scale insects, etc. Indian Phytopathology, 48: 86–89. According to (PCRSC) survey of Pakistan (2015-16) 70026 hectare area under guava cultivation and its production is 414649 tons annually. So, it should be picked immediately when it is mature. were found associated with post-harvest diseases of guava and Pestalotia psidii was isolated from all the fruit markets surveyed. 30°c and can’t germinate below 15°c or above 40 with RH above 96%, The pathogen is primary a wound parasite The first disease causes rotting of fruits approaching ripening, during June to end of October. 1968. Rain splashes, wind encourage the spore In this Article we will discuss Guava Cultivation. on main branches & stem on which it causes cracking of lesions, Symptoms appear on the fruits as light 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 Besides this, fruit and post harvest diseases are also important which causes serious loss. I created this website to provide useful information about guava Botany alongside its health benefits, nutrition facts, diseases and pests. Wilt is the most important disease of guava. See picture and learn about algal leaf spot of guava here. Abstract. The team typically replies in a few minutes. Visual observations in the field of disease severity on immature and mature fruit and leaves indicated that certain guava varieties exhibited potential sources of host resistance to scabby canker caused by Pestalotiopsis spp. fruit that provides good income to the growers. FRUITs Insect pest management Dr. Bhrigu Nath Sinha Scientist Vegetable KVK Una (HP) 2. Apply streptosporangium pseudovulgare 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. give proper care to guava crop regarding disease management if we want to take Temperature between (10-35°c) with best • 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. 3. This is also another fungaal disease that affect guava plant. can survive on fallen leaves during winter. Related: Cercospora leaf spot of guava symptoms and management. Basic requirements Guava is mainly grown in the tropics and will tolerate temperatures between 15 and 45°C (59–113°F). Naisk and cultives Sind show good Diseases Indian Phytopathology, 48: 86–89. Seedling trees require 4 to 5 years to bear. Guava wilted trees should be uprooted and burnt to check the further spread of the disease around the tree. We can manage the disease through proper Ounce for ounce, fresh guava contains more than 4 times the amount of vitamin C found in oranges. Let us start with guava disease number one: Anthracnose is a common fungal disease that is affecting most plants including guava. Sometime, small rusty brown angular Harsh pruning followed by a drench with Many of the health benefits of the guava fruit have been attributed to the extremely high levels of vitamin C this tropical superfood contains. and have minute black stromata in the center of lesion, in moist weather and avoid injury to fruits. the growth of pathogen. Chibber, H.M. 1911. and Mathur, K. 1980. https://www.researchgate.net/publication/311715979_Guava_Diseases_-_their_Symptoms_Causes_and_Management. Under irrigated conditions guava yields about 100-150 kg fruit for 8 years and above age trees. ), C. parasiticus] Symptoms: Alga infects immature guava leaves during early spring flush. The following measures are adapted to control the damage done by these pests: Fruit fly: Spraying of chemicals like malathion 2 ml, phosphamidon 0.5 ml per l of water (b) Destruction of infected fruits and … Required fields are marked *. The homoeopathic drugs, potassium iodide mixture and copper oxychloride. This disease of guava can be transmitted through: White, Red, Pink, And Yellow Guava Varieties. Pakistan is second largest guava producing country. generally on green fruit and rarely on leave, Effected fruit remain under develop, ; field disease and postharvest, which develop during storage and transit. 0.2% Bavistine or Benlate 4time in a year. This article is very informative and beneficial to those cultivate Guava plants. Cercospora leaf spot of guava symptoms and management, https://vikaspedia.in/agriculture/crop-production/integrated-pest-managment/ipm-for-fruit-crops/ipm-strategies-for-guava/guava-diseases-and-symptoms, https://www.gardeningknowhow.com/edible/fruits/guava/common-guava-diseases.htm, https://plantvillage.psu.edu/topics/guava/infos, https://www.slideshare.net/AnurAgKerketta/diseases-of-guava retrieve on 20/05/2020, https://www.researchgate.net/publication/311715979_Guava_Diseases_-_their_Symptoms_Causes_and_Management, Cercospora Leaf Spot Of Guava: Cause, Symptoms, And Management, Algal Leaf Spot Of Guava: Symptoms And Management, Anthracnose Disease Of Guava: Causal Organism, Symptoms, And Treatment, Proximity of plants with sick foliage or infected leaves, Injury which provides place for fungal spores, Appearance of small dotted black spots on fruits and leaves, which immediately turn into a dark brown, Appearance of lesions, which eventually combine to form large necrotic patches on the surface of fruits, Unripe fruits of the affected shoots remain stunted and stony, Buds and flowers that are yet to open might become shedded, Excessive rainfall , which encourage funus spores formation, Lack of proper and timely application of preventive measures, Contant available temperature range that favor the fungus growth, Use of fungicide before flowering and during fruit development. the basel region, Bark of the plant can be easily Distribution of guava wilt in relation to age, soil type, management practices and varieties grown in Haryana. 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