Necrosis of sunflower

The isolates differed between itself in host range. All of these isolates except two were able to induce galls on kalanchoe, sunflower, datura, tobacco and chenopodium. Only five isolates produced galls on tomato. All isolates caused necrosis on grapevine explants.

7p schindler 30-12-2021 5 0   Download

Sunflower (Helianthus annuus L.) is an important edible oilseed crop in the country next to groundnut and soybean. One of the major factors for reduction in area of the crop is being attributed to the occurrence of fungal and viral diseases like sunflower necrosis disease (SND) and Sunflower leaf curl virus (SuLCV) resulting in yield loss in most of the sunflower growing regions of Southern and Northern India. In Karnataka, SuLCV has been reported to occur in almost all the popular sunflower hybrids grown during kharif, rabi and summer seasons with varied intensity.

5p cothumenhmong9 04-01-2021 8 1   Download

Cluster front line demonstrations were organized in sunflower crop under NMOOP-2016 to enhance the productivity and profitability by demonstrating Best Management Practices (BMP’s) about 24 ha area in farmer’s fields of KVK operational villages namely Kumarampalli village of Vempalli mandal and Jogireddypalli of Chakrayapeta mandal of Y.S.R district of Andhra Pradesh through participatory approach. KVK scientists demonstrated the BMP’s viz., Sowing of only two seeds per hill under Ridge and furrow system; Adopted Integrated Nutrient Practices viz.

8p caygaocaolon2 11-03-2020 17 0   Download

Field experiment was conducted at Oilseeds Research Unit, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola during kharif 2013 -14 and 2015-16, to study integrated management of Alternaria leaf blight and necrosis of Sunflower. Seed primimg with Trichoderma viride @10g/kg seed, Carbendazim 50 WP @ 2g/kg seed + Thiamethoxam 600 FS @ 4g/kg seed, Trichoderma viride @10g/kg seed + Thiamethoxam 600 FS @ 4g/kg seed with foliar spray of Propiconazole 25 EC @ 1ml/l + Thiamethoxam 25 WG @ 1.6g/l, 25 EC @ 1ml/l + Azadirachtin 1500 ppm @ 1.

9p kethamoi2 14-12-2019 14 0   Download

The present study was carried out to know the sap transmission nature of sunflower necrosis virus and detection by serological and molecular means. The disease was successfully transmitted through mechanical sap using 0.05 M potassium phosphate buffer. A maximum transmission of 52.33 per cent on cultivar KBSH-44, 51.33 per cent on KBSH-1, and 48.33 per cent on Morden. Under artificial inoculation, the newly emerged leaves showed slight downward curling, puckering and chlorosis followed by necrosis.

6p cothumenhmong1 11-12-2019 13 1   Download