scholarly journals Dwiroopa punicae sp. nov. (Dwiroopaceae fam. nov., Diaporthales), associated with leaf spot and fruit rot of pomegranate (Punica granatum)

2019 ◽  
Author(s):  
K.V. Xavier ◽  
A.N. KC ◽  
P.W. Crous ◽  
J.Z. Groenewald ◽  
G.E. Vallad
Keyword(s):  
Leaf Spot ◽  
Punica Granatum ◽  
Fruit Rot

scholarly journals Fungicide Application Timing Essential for the Management of Leaf Spot and Fruit Rot on Pomegranate (Punica granatum L.) in Florida

Plant Disease ◽  
2020 ◽  
Vol 104 (6) ◽  
pp. 1629-1637
Author(s):  
K. V. Xavier ◽  
A. N. KC ◽  
G. E. Vallad
Keyword(s):  
United States ◽  
Leaf Spot ◽  
Punica Granatum ◽  
Field Trials ◽  
Fruit Rot ◽  
Application Timing ◽  
Fungicide Application ◽  
Progress Curve ◽  
In The Beginning ◽  
Punica Granatum L

Pomegranate (Punica granatum L.) has emerged as an alternative fruit crop for growers dealing with devastating threats to citrus and avocado in the southeastern United States. However, foliar and fruit diseases are major constraints to commercial pomegranate production. Replicated field trials were performed in 2015 at three separate sites in Florida (Dover, Plant City, and Parrish) to evaluate Merivon (pyraclostrobin and fluxapyroxad), Luna Experience (fluopyram + tebuconazole), and a rotational program consisting of these two fungicides as well as Penncozeb 75DF (mancozeb) for the management of leaf spot and fruit rot of pomegranate. The fungicide programs were evaluated on the varieties Vietnam in Dover, FL; Angel Red in Plant City, FL; as well as Christina, Azadi, Vikusnyi, Alsirinnar, Sakerdze, and Wonderful in Parrish, FL. Mean leaf spot severity varied across sites at the end of each trial in August, with values ranging from 4.5 to 62.5% in Plant City, 7.5 to 45.8% in Dover, and 4.5 to 54.2% in Parrish. Based on area under the disease progress curve, all treatments that included at least one at bloom application significantly reduced disease levels compared with postbloom treatments and the nontreated control across all trial sites. Based on fruit rot incidence, Luna Experience and Merivon, when applied twice at bloom in the beginning of the season, reduced disease by 66.6 and 88.4%, respectively, in comparison with the nontreated control in Plant City. A rotational program further reduced disease by at least 97% at the end of the season in Parrish. The proper timing of fungicide application and rotation with different modes of action provided a feasible disease management option for pomegranate growers in the Southeast United States.

Phoma prunicola. [Descriptions of Fungi and Bacteria].

1967 ◽  
Author(s):  
G. Morgan-Jones
Keyword(s):  
United States ◽  
Great Britain ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Fruit Rot

Abstract A description is provided for Phoma prunicola. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Malus spp., Prunus spp., and a variety of other substrates. DISEASE: Leaf spot of apple, pear and species of Prunus. Thought to be a secondary invader. Isolated from fruit rot of lemon (31: 487). GEOGRAPHICAL DISTRIBUTION: Africa (Kenya, Nigeria, Tanzania); Asia (India, Israel); Australasia (Tasmania); Europe (Bulgaria, Germany, Great Britain, Italy, Netherlands, Norway, Spain, U.S.S.R.); N. America (United States). TRANSMISSION: Probably seed and soil borne. Dissemination by rain.

Pseudomonas lachrymans. [Descriptions of Fungi and Bacteria].

1967 ◽  
Author(s):  
J. F. Bradbury
Keyword(s):  
Central America ◽  
Cucumis Sativus ◽  
Geographical Distribution ◽  
Southern Africa ◽  
Leaf Spot ◽  
Crop Residue ◽  
Fruit Rot ◽  
Small Water ◽  
Rain Splash ◽  
Pseudomonas Lachrymans

Abstract A description is provided for Pseudomonas lachrymans. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Cucumis sativus and C. anguria. It may also attack C. melo var. inodorus (26: 140) and some other cucurbits. Elliott (31: 105) lists 10 hosts, all in the Cucurbitaceae. DISEASE: Angular leaf spot of cucumber. Small water-soaked spots appear on the leaves, petioles, stems, and fruits. On leaves they enlarge and become angular as they are delimited by veins They become tan to brown and the necrotic centres may fall out. On petioles, stems, and fruit spots develop white crusty bactenal exudate. A fruit rot develops if the bacteria penetrate deeply. GEOGRAPHICAL DISTRIBUTION: North and parts of Central America, most of Europe, U.S.S.R., China, Japan, W. Australia, Israel, southern Africa. (CMI Map 355, ed. 2, 1964). TRANSMISSION: The pathogen is seed-borne and infects the cotyledons dunng germination. It can overwinter on infected crop residue in the soil and has been found viable in dry leaf matenal after two and a half years (36: 677). The bacteria are carried from plant to plant within a crop by rain splash and probably by insects (Carsner, 1918; 31: 272). Workers can also spread the disease, particularly when foliage is wet with rain or dew (35: 810).

Leaf spot and fruit rot of strawberry caused by Neopestalotiopsis clavispora in Indo-Gangetic plains of India

2018 ◽  
Vol 71 (2) ◽  
pp. 279-283 ◽  
Author(s):  
Sunita Mahapatra ◽  
Joydeep Banerjee ◽  
Kailash Kumar ◽  
Subhrajyoti Pramanik ◽  
Krishnendu Pramanik ◽  
...  
Keyword(s):  
Leaf Spot ◽  
Fruit Rot ◽  
Gangetic Plains

scholarly journals Diversity and occurrence of major diseases of vegetables and fruit crops during spring season at Aanbukhaireni rural municipality of Tanahun district, Nepal

2019 ◽  
Vol 2 (1) ◽  
pp. 60-74
Author(s):  
Subash Subedi ◽  
Sheela Koirala ◽  
Saraswati Neupane
Keyword(s):  
Leaf Spot ◽  
Control Measure ◽  
Disease Incidence ◽  
Fruit Rot ◽  
Spring Season ◽  
Cercospora Leaf Spot ◽  
Survey Period ◽  
Rural Municipality ◽  
Vegetables And Fruits ◽  
Leaf Curl

A survey has been conducted to assess the diversity and occurrence of major vegetables and fruits cultivated in Aanbukhaireni rural municipality of Tanahun district, Nepal during spring season of 2019.The surveyed areas were Satrasayaphant, Baradiphant and Dumridanda villages of ward no 1, Yeklephant, Markichowk and Pateni villages of ward no2 , Gaadapani village of ward no 3, Saakhar village of ward no 4 and Ghummaune village of ward no. 5. The surveyed area consists of upper tropical and sub tropical climate. The total no of farmers field selected for the survey was 34, 32, 24, 17 and 21 from ward no 1,2,3,4 and 5 respectively.The major vegetables cultivated during survey period in the surveyed area were bean, bitter-gourd, brinjal, chilli, cowpea, cucumber, okra, pumpkin, sponge-gourd, tomato, snake-gourd and bottle-gourd. Similarly, the fruits found in the region were banana, papaya,  grapes, mango, litchi, peach, guava, lemon, mandarin orange etc. The major diseases of vegetables noticed were early blight, late blight, cercospora leaf spot, powdery mildew, downey mildew, fruit rot, bacterial wilt, bacterial spot, leaf curl and mosaic. In case of fruits, sigatoka leaf spot,  panama wilt, black rot, algal leaf spot, canker, root rot, foot rot, sooty mold, red rust, anthracnose, rust, mosaic, alternaria leaf spot, downey mildew and leaf curl were the major diseases. The higher disease incidence (70%) and severity (48%) in vegetables were recorded in ward no 2 where as the lower incidence (45.2%) and severity (37.71%) were found in ward no 4. Similarly, the higher fruit disease incidence (70.24%) and severity (51.27%) in ward no 1 followed by ward no 2 with disease incidence and severity of 66.79% and 45.14% respectively. The reasons for those results are low educational level, lack of best bet technology, no proper irrigation and fertilizer, unavailability of pesticides for controlling the diseases. This study will be useful to identify the major diseases of vegetables and fruits of terai and inner terai region of Nepal and applying control measure, looking for the best possible solutions.

Myrothecium roridum Leaf Spot and Stem Canker on Watermelon in the Southern Great Plains: Possible Factors for Its Outbreak

2012 ◽  
Vol 13 (1) ◽  
pp. 47 ◽  
Author(s):  
Benny D. Bruton ◽  
Wayne W. Fish
Keyword(s):  
Great Plains ◽  
Leaf Spot ◽  
Natural Infection ◽  
Stem Canker ◽  
Differential Resistance ◽  
Fruit Rot ◽  
Wide Range ◽  
Myrothecium Roridum ◽  
High Level ◽  
Physical Features

In 2010, a foliar and stem-lesion disease was observed for the first time in Oklahoma causing moderate to severe defoliation. Using microscopic examination, the physical features of the fungus were consistent with Myrothecium roridum. There was a wide range of susceptibility among watermelon cultivars in the field indicating a moderately high level of resistance to Myrothecium leaf spot in some cultivars. In greenhouse inoculation experiments, cantaloupe, honeydew, cucumber, squash, and watermelon were all susceptible to the fungus with cantaloupe and honeydew being the most susceptible and watermelon the most resistant. Furthermore, greenhouse inoculations supported the field observations as differential resistance was exhibited among the watermelon cultivars as well as the cucurbit types. Although cantaloupe was most susceptible to the foliar phase of this disease, watermelon was most susceptible to the fruit-rot phase. Natural infection of watermelon fruit has never been reported. Accepted for publication 15 December 2011. Published 30 January 2012.

Establishment of seed-borne nature ofAlternaria alternatacausing leaf spot and fruit rot of chilli

2012 ◽  
Vol 45 (7) ◽  
pp. 869-872
Author(s):  
Manjul Pandey ◽  
Mukesh Srivastava ◽  
R. P. Mishra
Keyword(s):  
Leaf Spot ◽  
Fruit Rot

scholarly journals Pestalotia Leaf Spot and Fruit Rot of Strawberry

EDIS ◽  
2020 ◽  
Vol 2020 (5) ◽  
Author(s):  
Juliana S. Baggio ◽  
Natalia A. Peres
Keyword(s):  
Plant Pathology ◽  
Leaf Spot ◽  
Fruit Production ◽  
Causal Agent ◽  
Fruit Rot ◽  
Disease Development ◽  
Plant Parts ◽  
Pathology Department ◽  
And Control

Pestalotiopsis-like fungi cause diseases on many different species of plants worldwide, including strawberry. The pathogen is not necessarily new to strawberry and was first reported causing fruit rot in Florida and Israel in the 1970s. However, during the 2018–19 and 2019–20 strawberry seasons, severe and unprecedented outbreaks were reported in Florida, characterized by symptoms on nearly all plant parts including roots, crowns, petioles, fruit, and leaves. This new 4-page publication of the UF/IFAS Plant Pathology Department describes the disease and its causal agent and briefly covers what is known about disease development and control practices. This document will provide valuable information to strawberry nursery and fruit production growers. Written by Juliana S. Baggio and Natalia A. Peres.https://edis.ifas.ufl.edu/pp357

Alternaria citri. [Descriptions of Fungi and Bacteria].

1970 ◽  
Author(s):  
M. B. Ellis
Keyword(s):  
Geographical Distribution ◽  
Leaf Spot ◽  
Nutrient Balance ◽  
Fruit Rot ◽  
Black Rot ◽  
Mature Fruit ◽  
Limited Distribution ◽  
Rough Lemon ◽  
Leaf Drop ◽  
Necrotic Spots

Abstract A description is provided for Alternaria citri. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Citrus spp. DISEASES: Black rot of oranges; fruit rot of lemons and tangerines, leaf spot of rough lemon and Emperor mandarin. Probably found in general on Citrus spp., especially fruit. Internal decay in oranges begins near the styler end. There is no external sign of this but infected fruit tend to colour prematurely and some may drop. The condition may be aggravated by weather and host nutrient balance. On lemons a soft, central rot occurs in mature fruit, beginning at the button and spreading to the axis. The rind becomes translucent before the rot appears on the surface. There is also an end rot in which the external spread is almost as extensive as that inside the fruit. On leaves of rough lemon circular or irregular necrotic spots with concentric zoning are produced. A general chlorosis, curling and leaf drop follow. GEOGRAPHICAL DISTRIBUTION: The fruit rotting form is widespread although other forms may be of more limited distribution. TRANSMISSION: Presumably air-borne but no dispersal studies appear to have been reported.

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