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Antagonism of Trichoderma spp. strains against pea ( Pisum sativum L.) Fusarium wilt caused by Fusarium oxysporum f. sp. pisi. Acta Agron. (Palmira)
Checa Coral,Oscar Eduardo; Toro Criollo,Maribel; Descanse Vallejo,Jesica.
Abstract The antagonistic effectiveness of native strains of Trichoderma spp. on Fusarium oxysporum f. sp. pisi. in vitro, greenhouse and field conditions, were evaluated. in vitro conditions, the antagonistic capacity of 12 strains of Trichoderma spp., C2, C7, C12 and C21 strains, exhibited a better behavior measured by the following variables: inhibition halo and mycelial growth. In greenhouse conditions, the four strains, which showed the best in vitro antagonistic behavior, were evaluated using a DIA experimental design with factorial arrangement for three factors, which corresponded to strain, concentration and dose. The results of this evaluation, showed that C12 and C21strains at doses of 20 mL, and at concentrations of 108 and 106 conidia.mL-1,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antagonistic capacity; Inhibition halo; Inoculum; In vitro; Field conditions; Greenhouse; Mycelial growth.
Ano: 2017 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000300442
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Productive potential of cassava plants (Manihot esculenta Crantz) propagated by leaf buds Anais da ABC (AABC)
NEVES,REIZALUAMAR J.; DINIZ,RAFAEL P.; OLIVEIRA,EDER J. DE.
ABSTRACT New techniques of rapid multiplication of cassava (Manihot esculenta Crantz) have been developed, requiring technical support for large-scale use. This work main to evaluate the agronomic performance of plantlets obtained by leaf buds technique against stem cuttings in the field conditions. The work was conducted using the randomized block design in a factorial scheme with 3 varieties (BRS Kiriris, 98150-06, 9624-09) × 4 origins of the plantlets (conventional - stem cuttings of 20 cm length, leaf buds of the upper, middle and inferior stem part) × 2 agrochemicals (control and treated). There was a remarkable decrease in some agronomic traits that ranged from 23% (number of branches) to 62% (shoot weight) when using leaf buds plantlets. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Propagation; Vigor; Field conditions; Root production.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401733
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UV-B resistant yeast inhabit the phyllosphere of strawberry. Repositório Alice
CASTELIANI, A. G. B.; KAVAMURA, V. N.; ZUCCHI, T. D.; SÁBER, M. L.; NASCIMENTO, R. dos S.; FRIGHETTO, R. T. S.; TAKETANI, R. G.; MELO, I. S. de.
Abstract: The increase on the worldwide influx of solar ultraviolet radiation (UV-B) has inflicted a considerable challenge, due to its deleterious effects to live beings and pose a special threat to phyllosphere communities. However, UV-B influence on epiphytic yeasts associated with agricultural crops remains limited. Main aim of the present study was to determine the effect of ultraviolet-B radiation on the epiphytic yeast populations associated with strawberry under field conditions. Thus, strawberries (Fragaria x ananassa Duchesne cv. Oso Grande) were grown under three different treatments: a) environmental UV-B, b) enhanced UV-B and c) decreased UV-B; thereafter, their yeast epiphytic populations were analyzed by T-RFLP prior to yeast isolation,...
Tipo: Separatas Palavras-chave: T-RFLP; Field conditions; Leaf surface; Levedo; Morango; Raio ultravioleta; Clima; Strawberries; Yeasts; Phyllosphere; Ultraviolet radiation; Global warming.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1000403
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