Ảnh hưởng của bổ sung nấm Trichoderma spp. phân hủy cellulose, đối kháng nấm Fusarium spp. đến sinh trưởng và năng suất quýt đường trồng trên đất phèn tại xã Long Trị, thị Xã Long Mỹ, tỉnh Hậu Giang

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Tác giả: Thị Xuân Đỗ, Vĩnh Thúc Lê, Ngọc Thanh Xuân Lý, Hồng Huế Nguyễn, Quốc Khương Nguyễn, Chí Nhân Trần, Đan Trường Trần, Ngọc Hữu Trần

Ngôn ngữ: vie

Ký hiệu phân loại: 641.637 Food and drink

Thông tin xuất bản: Nông nghiệp & Phát triển nông thôn, 2021

Mô tả vật lý: 48 - 57

Bộ sưu tập: Metadata

ID: 498206

Thêm vào giỏ

Objectives of this study were (i) to determine the efficacy of microbial fertilizer and biofertilizer on mandarin growth and yield
(ii) to evaluate the efficacy of Trichoderma spp. for reducing yellow leaf and root rot in mandarin. The field experiment was arranged in a completely randomized block design, with 8 treatments, 3 replications in Long Tri commune, Long My town, Hau Giang province. Treatments included (i) farmers' fertilization practice regarded as control, (ii) biofertilizer, (iii) microbial fertilizer plus monthly treated lime, (iv) microbial fertilizer plus liquid of Trichoderma spp. (v) microbial fertilizer plus monthly treated lime added by liquid of Trichoderma spp. (vi) treatment iv plus PNSB biofertilizer, (vii) treatment vi with 75% N, p does applied (25% reduction) and (viii) treatment vi with 50% N, p does applied (50% reduction). The results showed that application of microbial fertilizer containing fungi strains of cellulose decomposition T. harziamum T-HG2Fa, T. asperellum T-HG4Ga improved foot stump diameter, stalk diameter, fruit number, resulting in an improvement of mandarin yield. Moreover, application of microbial fertilizer, lime plus PNSB biofertilizer containing bacterial strains Rhodopseudomonas palustris TLS06, VNW02, VNW64 and VNS89 increased significantly mandarin yield 96.4-152.1% higher than control - farmer's practice. Addition of fungi strains Trichoderma spp. T-AG5Ab, T- AG5Da, T- AG5Ab, T- AG6Cb and T- AG6Cc remarkably reduced the number of yellow leaf branches, with 45-65 branches compared to 84 branches and reduced the number of 4th secondary root rot in up to 46.6%.Xác định hiệu quả của phân hữu cơ vi sinh chứa nấm Trichoderma spp. và chế phẩm vi sinh đến sinh trưởng và năng suất quýt đường, (ii) đánh giá hiệu quả của nấm Trichoderma spp. trong giảm thiểu bệnh vàng lá thối rễ trên cây quýt đường. Thi nghiệm đồng ruộng được bố trí theo khối hoàn toàn ngẫu nhiên bao gồm tám nghiệm thức, với ba lần lặp lại tại xã Long Trị, thị xã Long Mỹ, tỉnh Hậu Giang. Các nghiệm thức bao gồm (i) bón phân theo nông dân, (ii) chế phẩm sinh học, (iii) bón phân hữu cơ vi sinh kết họp xử lý vôi mồi tháng, (iv) bón phàn hữu cơ vi sinh kết hợp tưới năm dòng nấm Trichoderma spp. dạng dung dịch đối kháng nấm Fusarium spp., (v) bón phân hữu cơ vi sinh kết hợp xử lý vôi mỗi tháng và tưới 5 dòng nấm Trichoderma spp. dạng dung dịch đối kháng nấm Fusarium spp. (vi) nghiệm thức iv và bổ sung chế phẩm vi sinh PNSB, (vii) nghiệm thức vi, nhưng giảm 25% N, p, và (viii) nghiệm thức vi, nhưng giảm 50% N, P. Kết quả cho thấy bón phân hữu cơ vi sinh có chứa nấm T. harziamum T-HG2Fa, T. asperellum T-HG4Ga phân hủy cellulose đã cải thiện đường kính cây, số trái trên cây và năng suất quýt đường. Ngoài ra, bón phân hữu cơ vi sinh kết họp bón vói và chế phẩm vi sinh chứa các dòng vi khuẩn Rhodopseudomonas palustris TLS06, VNW02, VNW64 và VNS89 làm tăng năng suất quýt đường từ 96,4 đến 152,1% so với bón phân theo nông dân. Bổ sung nấm Trichoderma spp. T-AG5Ab, T- AG5Da, T- AG5Ab, T- AG6Cb và T- AG6Cc có khả năng đối kháng nấm Fusarium spp. giúp giảm số nhánh bị bệnh (45-65 so với 84 nhánh) và số rẻ cấp bốn bị bệnh giảm đến 38,0%.

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