通过小区对比试验,研究了生防菌剂对烟草主要土传病害的防治效果。结果表明:生防菌剂XE01与X23能有效降低烟草青枯病发病几率和发病程度,其中施用生防菌剂XE01 7500 m L/hm^2+X23 4500 m L/hm^2处理,在打顶期和中部叶采收期防效较72%农...通过小区对比试验,研究了生防菌剂对烟草主要土传病害的防治效果。结果表明:生防菌剂XE01与X23能有效降低烟草青枯病发病几率和发病程度,其中施用生防菌剂XE01 7500 m L/hm^2+X23 4500 m L/hm^2处理,在打顶期和中部叶采收期防效较72%农用硫酸链霉素5000倍液分别提高了11.17%、13.53%,具有较好的推广应用价值。生防菌剂虽能在一定程度上降低烟草黑胫病发病几率和发病程度,但其防治效果与72%甲霜·锰锌相比还有一定的差距。展开更多
Aloe vera (L.) Burm.f. is one of the important medicinal plants, has been commercially cultivated in the Northern part of Bangladesh. An experiment was conducted to detect A. vera leaf disease collected from Natore di...Aloe vera (L.) Burm.f. is one of the important medicinal plants, has been commercially cultivated in the Northern part of Bangladesh. An experiment was conducted to detect A. vera leaf disease collected from Natore district, Bangladesh. Fungal leaf spot disease caused by Pseudopestalotiopsis theae (Sawada) Maharachch., K.D. Hyde & Crous was identified through morphological features and sequencing of internal transcribed spacer region of ribosomal DNA. After submitting nucleotide sequences to NCBI, we received an accession number MH333081.1: Pseudopestalotiopsis theae. The growth pattern of the isolated fungal pathogen was evaluated on different solid culture media, at different temperature and light conditions. The results showed the maximum mycelial growth of the fungus on the Richard Agar medium under the complete dark condition at 25°C. We evaluated fungal antagonists against the isolated pathogenic fungus, in which Trichoderma asperellum showed optimistic results. Synthetic fungicides—Tilt 250EC and Ridomil Gold completely inhibited the studied fungus’s vegetative growth. Pseudopestalotiopsis theae causing A. vera leaf spot disease in Bangladesh is a new record to the best of our knowledge.展开更多
文摘通过小区对比试验,研究了生防菌剂对烟草主要土传病害的防治效果。结果表明:生防菌剂XE01与X23能有效降低烟草青枯病发病几率和发病程度,其中施用生防菌剂XE01 7500 m L/hm^2+X23 4500 m L/hm^2处理,在打顶期和中部叶采收期防效较72%农用硫酸链霉素5000倍液分别提高了11.17%、13.53%,具有较好的推广应用价值。生防菌剂虽能在一定程度上降低烟草黑胫病发病几率和发病程度,但其防治效果与72%甲霜·锰锌相比还有一定的差距。
文摘Aloe vera (L.) Burm.f. is one of the important medicinal plants, has been commercially cultivated in the Northern part of Bangladesh. An experiment was conducted to detect A. vera leaf disease collected from Natore district, Bangladesh. Fungal leaf spot disease caused by Pseudopestalotiopsis theae (Sawada) Maharachch., K.D. Hyde & Crous was identified through morphological features and sequencing of internal transcribed spacer region of ribosomal DNA. After submitting nucleotide sequences to NCBI, we received an accession number MH333081.1: Pseudopestalotiopsis theae. The growth pattern of the isolated fungal pathogen was evaluated on different solid culture media, at different temperature and light conditions. The results showed the maximum mycelial growth of the fungus on the Richard Agar medium under the complete dark condition at 25°C. We evaluated fungal antagonists against the isolated pathogenic fungus, in which Trichoderma asperellum showed optimistic results. Synthetic fungicides—Tilt 250EC and Ridomil Gold completely inhibited the studied fungus’s vegetative growth. Pseudopestalotiopsis theae causing A. vera leaf spot disease in Bangladesh is a new record to the best of our knowledge.
