Eco-Friendly Management of Chilli Anthracnose (Colletotrichum capsici)

Abstract

An investigation was carried out to determine the efficacy of some organic materials to manage anthracnose (Colletotrichum capsici) of chilli (Capsicum annuum L.) under natural field condition at Bangladesh Agricultural University, Mymensingh, Bangladesh. Plant extracts of neem (Azadirachta indica), mahogany (Swietenia mahagoni), koromcha (Carissa carandas) and garlic (Allium sativum) applied as foliar spray, singly or in combination to find out their efficacy and profitability compared with control (no spray) and chemical fungicide Ridomil 50 WP (as a positive control). All the treatments controlled the disease significantly providing higher yield compared to control. As chemical, the combined application of neem, mahogany and garlic extracts also showed significant impact on disease reduction as well as on yield of chilli. Relatively, this organic cocktail gave a higher benefit (BCR = 3.97) with minimum production cost and this approach is proposed to the chilli-growing farmers to mitigate the chilli anthracnose. So, organic combination might be a better option to control anthracnose of Chilli rather than chemical control as it is cost-effective and environment friendly.

Evaluation of Plant-based Pesticide containing Neem Extract (Azadirachta sp.) to Control Anthracnose Growth in Chili Fruits

“…Aplikasik ekstrak mimba pada 59, 66, 73, 80, 87, dan 94 hari setelah tanam efektif menurunkan keparahan penyakit antraknosa pada pertanaman cabai (Sopialena et al 2018). Penggunaan ekstrak mimba dengan interval 15 hari mampu mengurangi tanaman dan buah yang terinfeksi oleh C. capsici (Rashid et al 2015).…”

Anthracnose of Chilli: Status, Diagnosis, and Management

“…In chilli, several workers have shown the efficacy of plant extracts against Colletotrichum spp. [103][104][105][106][107][108]. Among the plant extracts, Allium sativum (10%) and Azadirachta indica (10%) demonstrated the highest inhibition of mycelial growth of C. gloeosporioides [91].…”

Management of Fruit Rot of Chilli caused by Colletotrichum capsici

“…Root dipping in Pseudomonas fluorescens (0.1 %) at the time of planting followed by spraying of carbendazim (1.0 %) or hexaconazole (0.1 %) or Iprobenphos (0.1 %) or Pseudomonas fluorescens (1.0 %) at the onset of disease and 15 days after showed that, chemical fungicide spray resulted in dry fruit yield of 2.83 to 3.06 q ha -1 with a decreased dieback and fruit rot, while, Pseudomonas fluorescens spray yielded 1.75 q ha -1 as against 1.31 q ha -1 in control (Ekbote, 2005). Foliar spray of ridomil or botanicals at 21 days after planting and 15 days after showed that, ridomil (0.2 %) spray gave dry fruit yield of 1.56 t ha -1 , while application of plant extract spray in combination (neem leaf extract + mahagony seed + garlic extract or neem leaf extract +mahagony seed +Crassia carandus fruit, 1:10 ratio) resulted in higher yield of 1.65 t ha -1 (Rashid et al, 2015). Rajput (2011) demonstrated that, seed treatment with neem oil was the best for inhibition of mycelia growth of Colletotrichum capsici by 36 % as compared to seed treatment with panchagavya, biodigestor, cow urine, butter milk, jeevamrutha or vermi-wash.…”