Apple scab

The present study was undertaken to: (1) develop a spray schedule involving commonly available systemic and non systemic fungicides (II) evolve new EBI fungicides in schedule to provide multidisease control in the apple orchards.

15p chauchaungayxua10 19-03-2021 14 2   Download

Scab is the most serious disease of apple, particularly in years with cool wet springs and summers. Symptoms occur on leaf blade, fruit, petioles, sepals, blossoms, young shoots, and bud scales. The lesion increase in size as olive green colored which become progressively darker brown raised and velvety in appearance due to the abundant production of conidiophores and conidia.

12p gaocaolon5 14-06-2020 6 1   Download

The prevalence of favorable weather conditions during the month of April to June. Disease incidence increased of scab was more in Auli and Gangotri valley then Purola- Naugaon, Tuni, KotiKanasar and Gwaldam of Garhwal hills. The study area included seven districts of Garhwal division and six district of Kumaon division. Scab was wide spread appearance in all the areas surveyed and incidence varied from 0 to 100 percent in tree.

19p nguathienthan5 04-06-2020 9 1   Download

A scabbed leaf collected on 30 April was the most effective date that results 25 percent partial decomposition. The partial decomposition rate was observed low in the month of May with collected leaves on 30 Dec. (0.37 %), 30 Jan. (3.51 %), 28 Feb. (9.76%), and 30 March (18.01 %) at Jochira, Gangotri Fruit valley of District Uttarkashi, Uttarakhand. The interaction between collection date and category was found highly significant.

12p cothumenhmong5 17-05-2020 14 1   Download

A wide range of phytochemicals are present in apple (Malus domestica Borkh), their production was accelerated when apple was subjected to biotic stress. These chemicals were measured in the leaf of apple cultivar Shireen, healthy and infected by Venturia inaequalis and examined by microscope. Scab-induced metabolic re-programming was analyzed by methanol leaf extract by using Gas Chromatography-Mass Spectrometry, while the mass spectra of the compounds found in the extract were matched with the National Institute of Standards and Technology (NIST) library.

12p caygaocaolon4 04-04-2020 8 2   Download

Scab caused by Venturia inaequalis (Cke.) Wint. is the most important fungal disease of apple. The development and deployment of genetic resistance is reliable and a safe option to combat the dreaded disease with palpable advantage as compared to chemical control. A variety Firdous developed by SKUAST-K has been known for its resistance, however, genetic basis of resistance has not been proved or established till date.

6p nguaconbaynhay4 22-03-2020 11 0   Download

Apple (Malus × domestica) is an important fruit crop cultivated worldwide. Apple orchards are exposed to a diverse set of environmental and biological factors that affect the productivity and sustainability of the apple cultivation. Many of the efforts for apple production rely on reducing the incidence of fungal diseases, and one of the main diseases is apple scab caused by the fungus Venturia inaequalis (Cooke) Wint. Apple scab is the most devastating important disease of cultivated apple causing economic losses in terms of fruit quality and yield in many apple growing areas.

21p chauchaungayxua1 04-12-2019 27 1   Download

The aim our research was to develop effective methods for organic apple farming, based on the use of plant extracts to control the asexual reproduction of Venturia inaequalis. Plant extracts of artemisinin, chelidonine, thymol, and populin tested in vitro under laboratory conditions significantly slowed down the germination of V. inaequalis conidia.

8p vimb123 11-01-2019 24 2   Download

Turkey, the third leading apple producer in world, produces approximately 2.6 million tons of apples per year. Venturia inaequalis, the causal agent of apple scab, is a major fungal disease among apples varieties. This study was conducted in accordance with the plant protection method for isolates collected from the apple production areas in Isparta Province.

10p danhdanh11 09-01-2019 33 1   Download