Title:	Rice sheath blight biocontrol and growth promotion by Trichoderma isolates from the Amazon.
Authors:	SILVA, J. C. da TORRES, D. B. LUSTOSA, D. C. FILIPPI, M. C. C. de SILVA, G. B. da
Affiliation:	JOSEANI CASTRO DA SILVA, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA DARLYNE BARROS TORRES, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA DENISE CASTRO LUSTOSA, UNIVERSIDADE FEDERAL DO OESTE DO PARÁ MARTA CRISTINA CORSI DE FILIPPI, CNPAF GISELE BARATA DA SILVA, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA.
Date Issued:	2012
Citation:	Revista de Ciências Agrárias, v. 55, n. 4, p. 243-150, out./dez. 2012.
Description:	This study was carried out to select Trichoderma isolates from Amazon forest soil samples, identify their potential for sheath blight (Rhizoctonia solani) suppression in rice, and promote plant growth. Four out of the 13 isolates (T.06, T.09, T.12, T.52) which showed in vitro potential were evaluated through assays under greenhouse conditions utilizing four application methods: 1) preventive and curative sprays; 2) seed treatment + curative sprays; 3) seed treatment; 4) substrate treatment. These four isolates also showed reduced R. solani mycelial growth and sclerotial viability (>50%) and were positive for phosphate solubilization and cellulose degradation. They significantly reduced sheath blight severity when applied as seed treatment, substrate incorporation or foliar spray. However, the preventive and curative sprays were the most efficient method, reducing sheath blight severity by 43% and the area under the disease progress curve by 45%. Isolates T.12 and T.52 applied in substrate treatment increased aerial and root dry weight by 61.2 and 32.9%, respectively. These two isolates showed potential as growth stimulants and can be used as novel biological products and bioinoculants in agriculture for increasing grain yield.
Thesagro:	Arroz Oryza Sativa Thanatephorus Cucumeris Fator de Crescimento Queima da Bainha Trichoderma
NAL Thesaurus:	Rice Growth regulators Thanatephorus Integrated crop management
ISSN:	2177-8760
DOI:	10.4322/rca.2012.078
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPAF)