Onion growing areas

Xem 1-4 trên 4 kết quả Onion growing areas

Survey on onion basal rot disease incidence and evaluation of Aggregatum Onion (Allium cepa L. Var. Aggregatum Don.) genotypes against Fusarium oxysporum f. sp. cepae

Basal rot is a major fungal disease that occurs in onion crop caused by Fusarium oxysporum f. sp. cepae (Hanazawa) Snyder &Hansen. Severe yield losses occur in the onion crop due to the rotting of bulbs. Survey was conducted in onion growing areas of Tirunelveli, Thoothukudi and Tenkasi districts and five isolates of Fusarium were isolated under in vitro. The isolates were confirmed by both morphological and cultural characters.

8p nguaconbaynhay7 15-08-2020 11 2 Download

Survey on prevalence of stemphylium blight disease (Stemphylium vesicarium (Wallr.) E. Simmons) of onion (Allium cepa L.)in kashmir valley

Survey conducted during the year 2016 and 2017 at three stage of crop growth of onion in four districts of the Kashmir valley revealed the prevalence of disease in all onion growing areas of the valley during the month of May and June, while during the month of April prevalence of disease was recorded at only few locations, while as rest of the locations were disease free with overall incidence of 1.70, 28.02 and 60.33 and intensity of 0.30, 5.96 and 36.44 per cent, during the month of April, May and June, respectively.

7p angicungduoc5 12-06-2020 13 2 Download

Morphological and molecular characterization of alternaria isolates causing purple blotch disease of onion

Purple blotch is the most destructive disease commonly prevailing in almost all onion growing pockets except in very cool production areas of the world. The present study was carried out to understand the diversity in Alternaria population causing purple blotch disease of onion. Out of fifty six geographical Alternaria isolates of Karnataka seventeen were selected as descriptive isolates based on morphological characteristics for understanding the genetic variability.

16p nguathienthan4 21-04-2020 6 1 Download
Survey of purple blotch of onion (Alternaria porri) in major onion growing area in Nashik, India

Onion purple blotch caused by the fungus Alternaria porri is a major yield limiting factor in onion growing area. A survey was conducted to assess purple blotch disease severity in onion during kharif 2019 in Nashik district. The purple blotch disease severity ranged from 27.20 to 52.80 per cent. The highest disease severity noticed in Satana tahasil (52.80%) and lowest disease intensity was recorded in Nandgaon tahasil (27.20%) during kharif 2019. The highest purple blotch of onion was followed by Deola (51.20 %), Niphad (48.80%), Malegaon(43.20%), Chandwad (37.60%), Yeola (33.

6p nguaconbaynhay3 07-02-2020 10 0 Download