Black spot
Assessment of environmental quality through analysis of frequency of the black spot disease in an assemblage of fish, Guaíba lake, RS, Brazil
... the black spot disease caused by digenetic trematodes in fish was tested as an indicator of the quality of water in the watershed of Lake ...the black spot disease in fish, and environments ...
10
ABSTRACT Resistance to citrus black spot by the analyses of disease progress curves
... varieties ‘Hamlin’ (early), ‘Pera’ (mid-season), and ‘Valência’ (late) to citrus black spot was assessed in a commercial grove, under conditions of natural infection. Disease severity and disease incidence ...
6
Interference of spray volume, fruit growth and rainfall on spray deposits in citrus black spot control periods
... Citrus black spot (CBS) caused by Guignardia citricarpa is one of the most serious Brazilian citrus diseases. This study aims to assess the interference of three application volumes in spray deposition ...
7
Selection of fungi with biocontrol potential against the black spot disease of papaya
... An alternative strategy that may be adopted is the biological control. This type of control is considered a promising method to reduce the pesticide use and protect crops, thus adding value to the product going to the ...
8
ON THE PREVENTION OF THE BLACK SPOT OF SHRIMP.:;'
... From Table VI, the author observed that L-ascorbic acid, sodium thiosulfate anil EDT A were valuable in preventing black spot for- mation caused by tyrosinase.. L-a[r] ...
11
Acceleration of the decomposition of Sicilian lemon leaves as an auxiliary measure in the control of citrus black spot
... In the current study, various treatments were used in the acceleration of decomposition in Sicilian lemon leaves as an auxiliary measure to control citrus black spot. The treatments tested were: 1) urea ...
6
The occurence of black spot disease in Astyanax aff. fasciatus (characiformes: characidae) in the Guaíba Lake basin, RS, Brazil
... that black spot agents can result in reduced survival, growth and health of fish in natural systems (Quist et ...that black spot disease is known to reduce energy reserves in infected fish, ...
8
Testers for combining ability and selection of papaya hybrids resistant to fungal diseases
... to black spot, phoma spot and chocolate ...phoma spot and black spot on leaves and the lesion area of black spot and chocolate spot on fruits were evaluated ...
7
Effect of temperature, leaf wetness, and rainfall on the production of Guignardia citricarpa ascospores and on back spot severity on sweet orange
... of black spot symptoms including hard spot, virulent spot, and false melanose occur on affected fruit and reduce its value for the fresh market (Kotze, ...to black spot causes ...
6
MOLECULAR AND PATHOGENIC VARIABILITY OF Drechslera ISOLATES FROM OATS
... The black spot symptoms were characterized by elliptical to circular spots with a whitish center and a dark- brown to black border, 2-3 cm and rarely more than 5 cm in ...the black spot ...
7
MOLECULAR DIAGNOSIS OF Guignardia citricarpa IN ASYMPTOMATIC SWEET ORANGE TISSUE
... Citrus black spot (CBS), caused by Guignardia citricarpa (=Phyllosticta citricarpa), is one of the main fungal diseases in citriculture. All varieties of sweet orange (Citrus sinensis) and species such as ...
7
Temporal progress and spatial patterns of quiescent diseases in guava influenced by
... The progress rates of anthracnose and black spot were higher when crop residues were present (p ≤ 0.05), which suggests that both pathogens can survive in these residues that perpetuate within-field ...
9
Identification key to the Gerridae (Insecta: Heteroptera: Gerromorpha) from the Amazon River floodplain, Brazil, with new records for the Brazilian Amazon
... I-II black; male connexival spines reaching middle of genital segment I ...to black, with a pair of elongated light maculae centrally; middle tarsi with claws; connexival spines present ...to black, ...
11
A new species of the characid genus Hollandichthys Eigenmann from coastal rivers of southern Brazil (Teleostei: Characiformes) with a discussion on the diagnosis of the genus
... Small black chromatophores scattered over rays of all ...Small black spot vertically expanded at base of median caudal-fin rays ...two black vertically elongate humeral spots; anterior ...
12
Control of Guignardia citricarpa by Bacillus subtilis and Trichoderma spp.
... ABSTRACT – The ability of isolates of Bacillus subtilis and Trichoderma spp. to control citrus black spot (CBS) was investigated in ´Natal´ sweet orange orchards. The first experiment was conducted during ...
8
In vitro effect of UV-C irradiation on Guignardia citricarpa and
... Black spot, caused by Guignardia citricarpa, is one of the main diseases affecting citrus ...of black spot in postharvest ...citrus black spot on fruit at a satisfactory level; ...
6
Incidence of postharvest diseases on ‘Kumagai’ and ‘Pedro Sato’ guavas at wholesale markets in Brazil
... - black spot; ▲ - Fusicoccum rot) in ‘Kumagai’ (A and B) and ‘Pedro Sato’ (C and D) guavas, collected every fifteen days from November to April of 2009/10 and 2010 /11 at CEASA (Campinas, SP) (A and C) and ...
5
SYSTEMATICS, MORPHOLOGY AND PHYSIOLOGY New Species of Tomoplagia Coquillett (Diptera: Tephritidae) from Capitula of Asteraceae in Brazil
... posterior black spot, in some specimens additional pair of lateral vittae present, from transverse suture to lateral margin of sublateral black spots; setulae fine, yellow to pale brown, evenly ...
23
ZOOLOGIA 29 (6): 557–562, December, 2012 Available online at www.scielo.brzool
... short black spot near anterior margin; lateroanterior tubercle ...two black an- terior tubercles; behind them two black, elongate spots not reaching basal edge; entire pronotal surface with ...
6
Immune response of black tiger shrimp (Penaeus monodon Fabricius) to yellow head virus (YHV) and white spot syndrome virus (WSSV)
... origin of lymphoid cells in the penaeid prawn Penaeus monodon. Dis. Aquat. Org. 40: 85-92. Bell, T.A. and Lightner, D.V. 1988. A Handbook of Normal Penaeid Shrimp Histology. World Aquaculture Soceity, Baton Rouge, USA. ...
14