Isolation and In vitro Compatibility of Fungal Antagonists of Mango Anthracnose with Fungicides

The compatibility of antagonists of Colletotrichum gloeosporioides (Nigrospora spharica (Sacc.) E.W. Mason, Gliocladium roseum Bainier and Aspergillus sp.) in mango, with different   fungicides was tested through poisoned food technique. Two systemic fungicides viz., carbendazim (0.1% -1 g/L), hexaconazole (0.05% -1/2 ml/L) and a non-systemic fungicide viz., Sulphur (0.2% - 2g /L) were evaluated for their compatibility with potential antagonists. The antagonist Nigrospora sphaerica (95.56%) and Aspergillus sp. (91.11%) were most compatible with sulphur whereas Gliocladium roseum, was more compatible with Hexaconazol (73.11%). The results of present study are quite encouraging for the eco-friendly management of the mango anthracnose

In-vitro Evaluation of Fungicides and Botanicals against Uromyces ciceris arietini Inciting Chickpea Rust Disease

Chickpea, commonly known as gram is one of the important pulse crops in India. The crop faces numerous disease attacks, resulting in losses to both quality and quantity. Among the diseases, rust caused by Uromyces ciceris arietinum, is a sporadic disease of chickpea. Considering the notoriority of disease A study was conducted at department of plant Pathology and Agril Microbiology, PGI MPKV, Rahuri during 2021-22 which aimed to assess the efficacy of fungicides against the pathogen causing rust disease under in vitro conditions. Among five fungicides, Tebuconazole 50% + Trifloxystrobin 25% w/w WG and Azoxystrobin 18.2% + Difenoconazole 11.4% w/w SC were found cent per cent effective against U. ciceris arietini, which completely inhibited uredospore germination at all three concentrations, viz. 50 ppm, 100 ppm, 500 ppm. However, Propiconazole 25% EC, Tebuconazole 25% EC and Hexaconazole 5% SC were found cent per cent effective against test pathogen only at 500 ppm. Among botanicals, Azadirachtin and Pongamia oil showed effective treatments to some extent. Maximum uredospore germination (63%) was recorded in control (Tap water)

Varietal Screening and Management of Basal Rot Disease of Onion

Onion (Allium cepa L.) belongs to the family Amaryllidaceae. It is known as common onion, bulb onion or biennial herb, and is one of the most important vegetable crops in India. However, the crop faces numerous diseases attack, resulting in losses to both quantity and quality. Among the diseases, the basal rot caused by Fusarium oxysporum f. sp. cepae, is one of the most significant soil-borne diseases. This work aimed to screen various onion varieties for resistance against basal rot in pots under glasshouse condition as well as to assess the efficacy of fungicides against the pathogen under both in vitro and in vivo conditions. It was observed that all onion varieties screened were highly susceptible while Bhima red was just susceptible; none of the varieties were resistant to basal rot. Under in vitro conditions the Fungicides Carbendazim and Tebuconazole, of the given concentration, were cent per cent effective in inhibiting mycelial growth of Fusarium oxysporum f. sp. cepae. For the field condition, the module of [carbendazim (2 g/kg) followed by tebuconazole (0.1 %) followed by azoxystrobin (0.1 %)] was the most effective.&nbsp