0000001526 00000 n Additional data on efficacy of a large number of fungicides would provide a wide range of efficient products, allowing producers to have a diversity of substances that could be combined wisely to prevent resistance. Edgington, L.V., Khew, K.L. The shift towards the late maturating mango varieties is driven by market opportunities in big cities and for export during that period. (2007) Alteration of Post Harvest Diseases of Mango Mangifera indica through Production Practices and Climatic Factors. The tests were carried out in 3 mango orchards with trees of more than 15 years of age and a size ranging from between 8 and 20 m in height. Ministre de lAgriculture (Sngal). endstream endobj startxref Singh, D. and Agarwala, R.K. (1987) Differential Reaction of Fungicides to Anthracnose of Citrus (C. gloeosporioides) in Vitro and in Vivo. However, efficacy data from field testing are of great importance to make the right choice. 3.2. Indian Journal of Mycology and Plant Pathology, 17, 323-324. 0000005534 00000 n pages methyl thiophanate spinosad inquiry (In each column, numbers followed by different letters are significatively different, Tukey test, n = 20, p 0.05). 2Qd"E1f#\md032=, +R.-AW?TU6q\dH~DJ%n{H&V6E[+%*QwhMYM5#a!tg.hDA d)u_i3'.$Uz ?.APKOl,w`uhqLSDR/ >/ mF5ECg( Direction de lHorticulture (2003). 0000006843 00000 n 0000165561 00000 n This property is of great importance in the local conditions of Casamance where rainfall can be very frequent. The assessment for the incidence of anthracnose on fruits was performed as described in the literature [4] . This could be mainly due to its non systemic effect because the major part of the active substance is probably washed off by frequent rainfall in Ziguinchor. Untreated mango trees, used as control, were also sampled. 0000008500 00000 n methyl hydroxylamine ylidene In 2009, only systemic fungicides were used. In the same tree, mangoes from foliage parts not covered by the fungicide exhibited 46.6% of healthy fruits (Table 2). This disease is caused by, Colletotrichum gloeosporoides, a fungal pathogen in the class of ascomycetes which teleomorph, Glomerella cingulata, is observed rarely on mango. The symptoms observed were first described and classified. http://creativecommons.org/licenses/by/4.0/, Received 13 May 2014; revised 10 June 2014; accepted 25 June 2014. adsorption methyl figure pulse polarographic relation determination soil fungicide study its 0000079309 00000 n Influence of Treatment of Entire Foliage on the Incidence of Anthracnose. 103 0 obj <>stream Fungicide treatments in 2009, helped preserve between 30% and 80% of mangoes in the treated foliage portion and 5% to 50% from untreated foliage portions of sprayed mango trees. This region has boundaries to Gambia in the north and Guinea Bissau in the south whereas the coast of the Atlantic Ocean represents the western border. d~8gN=/e!wV 'zJ~f L4;[?q:yz69G +vr1jb'u&. Mango business is a strong driver of socio-economic development by providing labor but it also attracts other players in the value chain like fruit processers and suppliers. In the first year, with treatment consisting with covering half of the mango foliage with the fungicide spray, both treated and untreated mangoes from the same tree were sampled. endstream endobj 802 0 obj<>/ViewerPreferences<>/Metadata 20 0 R/Pages 19 0 R/StructTreeRoot 22 0 R/Type/Catalog>> endobj 803 0 obj<>/Font<>/ProcSet[/PDF/Text/ImageC]/ExtGState<>>>/Type/Page>> endobj 804 0 obj<> endobj 805 0 obj<>stream Rebollar-Alviter, A., Madden, L.V. The first application took place on 03/06/10 and the second on 26/06/10. Copyright 2006-2013 Scientific Research Publishing Inc. All rights reserved. alternata azoxystrobin efficacy concentrations In these late years, the economic activities around mango business tend to slow down drastically or even stop by onset of the rainy season because of post harvest rot due to anthracnose. ,>"mw%Ve*!%[QntqP8%$Ju(CwPj STs9M.s`D6DK+"$B["!-["#KG%RaDjDZ t|' upM)mDO".(.YAE^$$~Y~6+o fungicide wdg azoxystrobin 0000195876 00000 n Assessing for the Incidence of Anthracnose. pubchem Characteristics of fungicides tested. About SCIRP | Sitemap 0000172696 00000 n 801 60 The first treatments in 2009 took place in the rainy season, while 20% of mangoes on trees exhibited anthracnose lesions. |?5 [w@d,B0Ot\Zbgv[. Mancozeb and myclobutanyl were less effective. ~|@ M9Jt5Ut.=.A "C 0000116986 00000 n 0000012390 00000 n Treatment with Mancozeb (contact fungicide) was less effective than thiophanate methyl and azoxystrobin. nT=7q 0000195850 00000 n and Subramanian, K.S. 0000195487 00000 n The tests were performed in two production seasons in 2009 in 2 orchards and 2010 in 3 orchards. The analysis of variance showed a significative difference between treatments (p < 0.05). It covers 7301 km2, representing 3.74% of Senegalese territory and harbors the Casamance River [3] . 0000172967 00000 n (1996) Chemical Control of Die-Back of Acid Lime Caused by Colletotrichum gloeosporioides. Table 1 . 0000195236 00000 n From the non treated control trees, no ripe disease free fruit was recorded. Agence Nationale pour la Statistique et la Dmographie (2008) Situation conomique et sociale de la rgion de Ziguinchor. 0000000016 00000 n In orchard 2 all fruits from untreated trees were rotten because of anthracnose after 10 days of incubation. An effort to promote commercial fruit orchards by the government included the introduction of exotic species and improved varieties since the year 1860. 0000009471 00000 n FRh2O,$G#J^AD!b AKi;p^j41>2SA8x7)|v!58VID~#< The better results for protection on tree portions physically covered by the fungicides may indicate that the systemic fungicides were not fully absorbed and mobile within the tree. Treatment with azoxystrobin gave the second best result with 92% of mangoes free of anthracnose while treatment with mancozeb allowed protecting 84% of mangoes. Fungicide treatments of mango trees during fruit development in the field showed to be very efficient to control anthracnose. Indian Journal of Mycology and Plant Pathology, 26, 112. 0000001839 00000 n Treatment with myclobutanyl was the least effective, with only 26.6% and 6.6% of uninfected mangoes from the treated and untreated tree portion respectively. prothioconazole pesticide phytopathology 0000220345 00000 n In the second year, five (5) mangoes were sampled randomly on each tree or treated tree part. Treatment with thiophanate methyl allowed no mango rotting due to anthracnose (100% of mangoes disease free at ripe stage). 4gM]Kqq;J5$V^%"COCx7%ua0jHME;X:VKXL` YKj0&rCi_ e%NLDI q05.A&`:gQ:z*[j9)4Ky xH [A+\%UxXeUo^'*K@ QU0[Ux#xJmxR;,TFebmy4'j64fV1>@pCPF5=nlWAl{#cPolc.'cAqkohj%#'9j_!-N%]9,q Y$Ggg0tQU)=ZA B&TE9#;~lci?eTYZp0sRBx0j!Td6. Effect of pre-harvest treatments on incidence of mango anthracnose in 2009. 801 0 obj <> endobj Keywords:Anthracnose, Fungicides, Mango, Soudanian Agroclimate, Senegal. xref As a consequence, new orchards are set up resulting in an increasing activity and land surface dedicated to mango production. 0000014727 00000 n 0000165306 00000 n v.T B|hs" iKP\$%$!cX|29b%7w}2Ru[x[&/-*B In a column, means followed by a common letter are not significantly different at the 5% level. 0000002036 00000 n Anthracnose is the one of the most devastating diseases of mango produced in the southern part of Senegal. 0000006403 00000 n Indeed, the frequency of rain could be a limitation factor for contact pesticides. Effect of pre-harvest treatments on incidence of mango anthracnose in 2010. 0000013082 00000 n Treatment with myclobutanyl was less effective. 0000004679 00000 n DH2, Dakar, 15 p. Arauz, L.F. (2000) Mango Anthracnose: Economic Impact and Current Options for Integrated Management. The tallness of the mango trees and the large volume of foliage to be covered are additional reasons for the preference of systemic fungicides. 0000007950 00000 n The absence of atomizers capable of propelling the spray into the canopy of trees (more than 10 meters high), because of their high cost, is an additional constraint to the use of contact fungicides. 2.6. To date, fungicides are the most reliable strategy to achieve effective control of anthracnose and safeguard production in humid regions [2] . These results show a fair curative efficacy of the used fungicides as already reported for azoxystrobin [5] . Green mature mangoes were sampled at harvest stage, identified by the producers. 0000014939 00000 n It is the most rainfall rich part of the country with between 700 and 1500 mm over 70 to 80 days. endstream endobj 635 0 obj <>stream In a column, means followed by a common letter are not significantly different at the 5% level. The better efficacy of the fungicides in 2010 could be related to the early (preventive) treatment, before anthracnose lesions were seen on fruits. Mean values was separated through Tukeys tests pairwise comparisons. 0000143065 00000 n difenoconazole pda amended graminearum methyl thiophanate fusarium schwabe prothioconazole vitro pesticide phytopathology laboratory

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