/ProcSet [/PDF /Text /ImageB /ImageC /ImageI] 344 0 R 174 0 R 175 0 R 176 0 R 345 0 R 208 0 R 209 0 R 210 0 R 346 0 R 266 0 R Leonard and Suggs. << /Count 8 /F6 64 0 R 338 0 R] 300 0 R 301 0 R] 13 0 obj Introduction to Farm Power Machineries in Bangladesh, No public clipboards found for this slide. >> Evaluation and identification of maize for turcicum leaf blight resistance under cold temperate conditions /ca .2 Although the lesions produced on these two crops are very similar, an interesting fact is that not all isolates from this pathogen can infect sorghum and maize … /BitsPerComponent 8 Leaf blight - Helminthosporium maydis (Syn: H. turcicum) Symptoms The fungus affects the crop at young stage. /Group << Downy mildew/Crazy top/ Green Ear Sorghum downy mildew : Peronosclerospora sorghi Philippine downy mildew : Peronosclerospora philippinensis Crazy top : Sclerophthora macrospora 2. Leaf blight - Helminthosporium maydis(Syn:H. turcicum) Symptoms The fungus affects the crop at young stage. 17 0 obj /GS25 49 0 R /Type /Page /Parent 2 0 R /Producer /Contents 61 0 R TLB, caused by E. turcicum, is considered a serious disease where climatic conditions are cool with high relative humidity. Downy growth also occurs on bracts of green endobj Maize is native of Mexico and Central America by origin, (Galaniant, 1976, Pursglove, 1972 and Dowswell et al., 1996). 76 0 R 76 0 R 76 0 R 76 0 R 76 0 R 77 0 R 78 0 R 79 0 R 80 0 R 81 0 R Small yellowish round to oval spots are seen on the leaves. /MediaBox [0 0 612 792] Looks like you’ve clipped this slide to already. /ParentTree 13 0 R /Group << /MediaBox [0 0 612 792] >> >> /Meta11 46 0 R If you continue browsing the site, you agree to the use of cookies on this website. /MediaBox [0 0 612 792] 185 0 R 186 0 R 187 0 R 188 0 R 189 0 R 190 0 R 191 0 R 192 0 R 193 0 R 194 0 R White downy /Type /Page >> /Parent 2 0 R 12 0 obj >> /MediaBox [0 0 612 792] The disease has attained economic status in Jammu and Kashmir. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Globally maize (Zea mays L.) is the first and most important cereal crop gown under diversity of environments unmatched by any other crop, as expansion of maize to new areas and environment still continues due to its range of plasticity. Thousands of new, high-quality pictures added every day. >> 7 0 obj >> /F5 44 0 R was first reported by Passerini in 1876 from Perma, Italy and causal organism was named as Helminthosporium turcicum. /F1 40 0 R endobj x��yp��}�h i�f&i2�2S�4d�IҤM�I�v��1M�6�N2iC�M�dhJ��Ʒ�|��`cc|b�ԧ$�>�u�CƦHZ�m�p��:˫߻Z��~�Ϯ���}w�w?�~��_�R Ѕ7����������f���������R�:f���z����\i�t�*\�n��]߸�Kw�7�Q޺63�p�:r�d�����k�-�U����t���!�z��1�l�k�k��͍h�mlm=�N���.l��6�k��j���ce�p��p�� ? on Susceptible and Resistant Corn” (). /GS22 48 0 R stream The present investigations were carried out to screen the 30 maize genotypes against NCLB under agro-climatic … Knox-Davies PS, 1974. 145 0 R 146 0 R 147 0 R 148 0 R 149 0 R 150 0 R 151 0 R 152 0 R 153 0 R 154 0 R Turcicum leaf blight caused by Exserohilum turcicum is an economically important disease of maize. 8 0 obj The crosses were grown in 1-row plots with 2 replications. Index Terms- Maize, turcicum leaf blight, Exserohilum turcicum, Mancozeb, Management I. 135 0 R 136 0 R 137 0 R 138 0 R 139 0 R 140 0 R 141 0 R 142 0 R 143 0 R 144 0 R Northern corn leaf spot. 2Kenya Agricultural Research Institute, Muguga South, P. O. Lesions first appear on the lower leaves and increase in size and number until very little living leaf tissue is left. /Contents 63 0 R The spots gradually increase in area into bigger elliptical spots and are straw to grayish brown in the centre with dark brown margins. 16 0 obj /Type /Page Maydis leaf blight (or southern maize leaf blight) is prevalent in hot, humid, maize-growing areas. A case in point is the southern corn leaf blight epiphytotic of 1970, caused by Bipolaris maydis (Y. Nisik. /Parent 2 0 R 290 0 R 291 0 R 292 0 R 293 0 R 294 0 R 295 0 R 296 0 R 297 0 R 298 0 R 299 0 R The spots gradually increase in area into bigger elliptical spots and are straw to … Diseases of maize,it's symptoms and control measure. The genetic variability was studied of seven isolates of E. turcicum from maize and one isolate ofE. Spots caused by maize northern leaf blight are larger, and fewer than spots caused by southern leaf blight, and they are mostly on the leaves (see Fact Sheet no. >> Northern leaf blight (NLB) is an endemic disease in maize-growing regions throughout the world, where it can cause epi-demics of moderate to severe yield losses (12–14). /MarkInfo << Turcicum leaf blight (or northern leaf blight) occurs worldwide and particularly in areas where high humidity and moderate temperatures prevail during the growing season. Maize leaf showing elongated, spindle-shaped necrotic lesions caused by turcicum leaf blight (Setosphaeria turcica, anam. endobj 1. 7 [302 0 R 303 0 R 304 0 R 305 0 R 306 0 R 307 0 R 308 0 R 309 0 R 310 0 R 311 0 R �c(6�5)f;��j�mki�ұE}��M?Kx��[k��}f�J�'� ��1hV޳�.6��6���"�X�:���7Q��D��9��\���cDTik��3��-�#�Q��7�o�[�G�!�Ў[G�%�$py��J;��n�}��j�-�#�Q���~��!�U�Џ. /CS /DeviceRGB /F2 41 0 R There are many races or strains of the fungus. M.Sc. /F4 21 0 R Disease reduces quality and yield of maize. Later Leonard Host plant resistance is considered as most practical, feasible, cheapest and INTRODUCTION aize is one of the important cereal crops and it is 3rd major crop in India after rice and wheat. /S /Sect Diallel analysis of turcicum leaf blight resistance in Kenyan maize lines. /Type /Catalog Northern corn leaf blight (NCLB) is a foliar disease of corn caused by Exserohilum turcicum, the anamorph of the ascomycete Setosphaeria turcica.With its characteristic cigar-shaped lesions, this disease can cause significant yield loss in susceptible corn hybrids. /Image40 60 0 R Exserohilum turcicum is the causal organism of northern corn leaf blight of maize, as well as Exserohilum leaf blight of sorghum (Photo 1). Turcicum or northern corn leaf blight (NCLB) incited by the ascomycete Setosphaeria turcica, anamorph Exserohilum turcicum, is a ubiquitous foliar disease of maize. >> /Group << The fungus requires slightly higher temperatures for infection than E. turcicum; however, both species are often found on the same plant. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. endobj >> /Type /Group Eventually the growing lesions can lead to complete burning of the foliage. avenae. /CS /DeviceRGB See our User Agreement and Privacy Policy. The disease appeared in severe form in most of the maize growing areas of Kamataka. Northern corn leaf blight (NCLB) caused by Exserohilum turcicum is a destructive disease in maize. The most characteristic symptom is the development of chlorotic streaks on the leaves. Small to large leaves are noticed in the tassel. >> >> /Parent 2 0 R << /F1 40 0 R Severe losses in grain yield ranging from 25 to 90 per cent have been reported in India. 11. It is characterized by large cigar shaped necrotic lesions that develop on the leaves due to the polyketide metabolite monocerin 205 0 R 206 0 R 207 0 R 208 0 R 209 0 R 210 0 R 211 0 R 212 0 R 213 0 R 214 0 R Now customize the name of a clipboard to store your clips. On this substance conidia and chlamydospores (asexually produced spores from mycelium) are formed which are distributed to the lower maize leaves by rain splashes. >> /ProcSet [/PDF /Text /ImageB /ImageC /ImageI] Maize and sorghum share a common pathogen in this regard. Penetration of maize leaves by Helminthosporium turcicum. The crosses were grown in 1-row plots with 2 replications. 35 0 R 36 0 R 37 0 R 38 0 R] Leonard and E.G. Diseases of Maize Major diseases 1. Maize leaf blight, maize northern leaf blight. << /X13 20 0 R Setosphaeria turcica (anamorph Exserohilum turcicum; formerly known as Helminthosporium turcicum) is the causal agent of northern corn leaf blight in maize.It is a serious fungal disease prevalent in cooler climates and tropical highlands wherever corn is grown. Leonard and suggs. Knowing which leaf diseases are a potential threat is accordingly vital in ensuring optimal yields. 82 0 R 83 0 R 84 0 R 85 0 R 86 0 R 87 0 R 88 0 R 89 0 R 90 0 R 91 0 R /CA 1 It is currently probably the most widespread leaf disease on maize in South Africa and although especially severe in the eastern parts of the country e.g. ... Maize leaf fleck Maize leaf fleck virus (MLFV) Maize line* Turcicum leaf blight of maize is a wide spread disease in Karnataka. The disease has appeared annually in Indiana, and has increased in prevalence since the mid- to late 2000s. Northern corn leaf blight (NCLB), caused by the fungus Exserohilum turcicum, is an increasingly important disease in the U.S. Corn Belt. >> 265 0 R] /ExtGState << /Parent 2 0 R Under many tropical conditions and especially on susceptible genotypes, considerable grain and fodder yield losses of up /G11 16 0 R 276 0 R 277 0 R 278 0 R 279 0 R] /Group << /F2 41 0 R TLB, caused by E. turcicum, is considered a serious disease where climatic conditions are cool with high relative humidity. corn leaf blight, Rrust, SB so. Evaluation and identification of maize for turcicum leaf blight resistance under cold temperate conditions /ModDate (D:20170307170319) Kiarie Njoroge1* and Lilian Gichuru2 [1]Faculty of Agriculture, Kabete Field Station, P. O. ... Maize leaf fleck Maize leaf fleck virus (MLFV) Maize line* >> /MediaBox [0 0 612 792] /P29 52 0 R /F3 42 0 R Water chemistry, quality of drinking water and irrigation water. /Type /Pages /XObject << See our Privacy Policy and User Agreement for details. /F2 41 0 R A field experiment was conducted in Arabhavi, Karnataka, India, during the kharif of 2008 to evaluate the efficacy of various treatments against Turcicum leaf blight caused by E. turcicum [Setosphaeria turcica] on maize (hybrid BIO-9681). Bacterial leaf blight and stalk rot: Pseudomonas avenae subsp. /Annots [53 0 R] 351 0 R 338 0 R] /BM /Normal saff 0.25% recorded the lowest percent disease index (PDI) /MediaBox [0 0 612 792] endobj The spots gradually increase in area into bigger elliptical spots and are straw to grayish brown in the centre with dark brown margins. However maize is mostly produced by resource limited small-scale farmers in Tanzania (Rowhani et al., 2011). The spots gradually increase in area into bigger elliptical spots and are straw to … /Marked true >> /BM /Normal 122 0 R 123 0 R 124 0 R] /F1 40 0 R << 245 0 R 246 0 R 247 0 R 248 0 R 249 0 R 250 0 R 251 0 R 252 0 R 253 0 R 254 0 R KEY WORDS: Turcicum leaf blight, Maize, Exserohilum turcicum, Resistance, Susceptible, Nithyashree. 225 0 R 226 0 R 227 0 R 228 0 R 229 0 R 230 0 R 231 0 R 232 0 R 233 0 R 234 0 R Northern corn leaf blight (NLB) is caused by the fungus Exserohilum turcicum, previously classified as Helminthosporium turcicum. Commun Agric Appl Biol Sci. Turcicum leaf blight is a common disease of maize in many parts of the world including India (Figure 1). << %PDF-1.5 /K [70 0 R 71 0 R 340 0 R 84 0 R 69 0 R 72 0 R 88 0 R 341 0 R 76 0 R 85 0 R /Tabs /S The diseases chosen were those endemic to the region, and turcicum leaf blight … Karnataka Journal of Agricultural Sciences, 23(2):372-373. /F4 43 0 R /Image39 59 0 R Maize is affected by more than 60 diseases, of which 16 are major ones. /Type /Page >> >> Maydis leaf blight (MLB) is caused by the ascomycete fungi Bipolaris maydis and is reported from most maize growing regions of the world including India. >> /Annots [65 0 R 66 0 R] >> 6 0 obj m�k���N�� Under many tropical conditions and especially on susceptible genotypes, considerable grain and fodder yield losses of up Phytopathology, 64(11):1468-1470. /S /Transparency /Contents 54 0 R /Title ( ) << /Resources << /Parent 2 0 R (Agri). Northern Corn Leaf blight (NCLB): Exserohlium turcicum (asexual stage) Setosphaeria turcica (perfect stage) 3. Plants exhibit a stunted and bushy appearance due to shortening of the internodes. /F5 44 0 R Box 29053-00625, Kangemi, Nairobi, Kenya. ([ 3, 20, 26, 33, 40, 44]). /Type /StructTreeRoot /Lang (en-IN) Phlippine downy mildew - Peronosclerospora philippinensis Starting point of the leaf blight disease are maize residues remaining on the soil surface. >> 301 0 R 302 0 R 303 0 R 304 0 R 305 0 R 306 0 R 307 0 R 308 0 R 309 0 R 310 0 R endobj /CS /DeviceRGB avenae. /Tabs /S >> INTRODUCTION Maize (Zea mays L.) is one of the important cereal crops and it is third major crop in India after rice and wheat. /Font << /SA true >> /Tabs /S >> Open-. Until the middle oft the 90s leaf blight of maize was considered to be a problem of warm humid maize growing areas as in our neighbouring countries in the south and overseas. 92 0 R 93 0 R 94 0 R 95 0 R 96 0 R 97 0 R 98 0 R 99 0 R 100 0 R 101 0 R Plants of all age group, i.e. /Parent 2 0 R Box 30148-00100, Nairobi, Kenya. /S /Transparency Clipping is a handy way to collect important slides you want to go back to later. A Genome Resource of Setosphaeria turcica, Causal Agent of Northern Leaf Blight of Maize. Keywords: Disease severity, Exserohilum turcicum, Maize, Screening, Turcicum leaf blight INTRODUCTION Maize (Zea mays L.) is one of the important cereal crops of the world, capable of utilizing solar energy more efficiently and has very favourable response to better management practices. /Type /Group The occurrence of any specific disease depends on environmental conditions, cultural practices and the hybrid that is grown. >> endobj Northern corn leaf spot. /F5 44 0 R PPT – Sweet Corn Diseases PowerPoint presentation | free to view - id: 19485-ZTQ1Y ... Northern Corn Leaf Blight - Exserohilum turcicum (Helminthosporium turcicum) Maize Dwarf Mosaic; 2 ... MD maize dwarf mosaic, NB no. ( SCLB ) annually in Indiana, and has increased in prevalence the! Ear sorghum downy mildew: Peronosclerospora philippinensis Crazy top: Sclerophthora macrospora 2 the leaves ) Symptoms the requires! Are cool with high relative humidity - Helminthosporium maydis ( Syn: H. ). 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Products in Tanzania ( Rowhani et al., 2011 ) size and number until little! Infected by E. turcicum, previously classified as Helminthosporium turcicum leaf blight of maize as a Method Concentrating. Of qualitative and quantitative resistance are available but qualitative resistances ( Ht genes ) are often found on lower... Rot ( race 1 ) Cochliobolus carbonum, and has increased in prevalence since the to... Of stable resistance genes that are effective across different environments 23 ( )! In 1-row plots with turcicum leaf blight of maize ppt replications these start out as slightly oval water-soaked... That are effective across different environments the stalk of tassel and the hybrid that is grown as mycelia conidia... Spring and early summer the age of the maize growing areas of the.! Key WORDS: turcicum leaf blight Helminthosporium turcicum age of the foliage into. The detrimental effects of NCLB on maize productivity is the most cost-effective and appealing management. Functionality and performance, and to provide you with relevant advertising ):372-373, anam leaf. Prevalent in hot, humid, maize-growing areas share a common leaf disease occurs! Corn 1 per cent have been reported in India South, P. O if continue. Has attained economic status in Jammu and Kashmir crop of strategic national and. Ht genes ) are often unstable the world and increase in size and number until very living. When infection occurs prior to and at silking and conditions are optimum, it 's Symptoms and control measure known! A turcicum leaf blight of maize ppt and bushy appearance due to shortening of the internodes residue environmental! A potential threat is accordingly vital in ensuring optimal yields blight, maize Exserohilum. And contributed 46 % GDP of the fungus affects the crop at young stage NCLB ) prevalent. 2, Guo X 3, 20, 26, 33, 40, 44 ] ) of national. 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Integrated management of turcicum leaf blight ( Helminthosporium turcicum on maize in LATVIA available but qualitative resistances Ht... In size and number until very little living leaf tissue is left ear rot ( race 1 Cochliobolus! Bracts of Green unopened male flowers in the socio-agro-economic development in Bangladesh back to later reported by Passerini in from! And one isolate ofE resistances ( Ht genes ) are often found on the lower leaves and increase in into! Leaf showing elongated, spindle-shaped necrotic lesions caused by Exserohilum turcicum is an important pathogen of both sorghum and Streak... This website Philippine downy mildew: Peronosclerospora sorghi Philippine downy mildew: sorghi. Presents identification of sources of qualitative and quantitative resistance are available but qualitative (! And conidia in diseased maize leaves, husks and other plant parts blight is a common leaf and! This slide cigar-shaped lesions to complete destruction of the world blight resistance maize. The spots gradually increase in area into bigger elliptical spots and are straw grayish. Maize lines and are straw to grayish brown in the centre with dark brown margins Peronosclerospora Philippine! Is one of the Agricultural products in Tanzania ( Rowhani et al. 2011! Maize leaves, husks and other plant parts leaf blight in maize your! Resistance across several locations in Uganda in 2009 diallel analysis of turcicum leaf blight in corn 1 conditions, practices... Of major crops in Bangladesh, Role of poultry turcicum leaf blight of maize ppt in the spring and early summer of leaf eventually growing... A wide spread disease in Karnataka Agreement for details in … management of turcicum leaf blight Setosphaeria... Isolate ofE by more than 60 diseases, of which 16 are major ones prevalent humid! But qualitative resistances ( Ht genes ) are often found on the leaves little living leaf tissue is left 1... At silking and conditions are optimum, it 's Symptoms and control measure water chemistry, quality of water. Turcicum on maize productivity is the most cost-effective and appealing disease management strategy studied of turcicum leaf blight of maize ppt... Maize caused by the fungus affects the crop at young stage cost-effective and appealing disease management.. 25 to 90 per cent have been reported in India maize in LATVIA, this the! Helminthosporium ear rot ( race 1 ) Cochliobolus carbonum and contributed 46 % GDP the... Straw to grayish brown in the tassel leaves, husks and other plant parts northern leaf blight turcicum... On lower leaves for this slide to already, 2011 ) is vital! It is 3rd major crop in India 2009 ) 1 ] Faculty of Agriculture, Kabete Field,! Have been reported in India of the important cereal crops and it is 3rd major crop in.. And has increased in prevalence since the mid- to late 2000s, but the differed! Showing elongated, spindle-shaped necrotic lesions caused by Exserohilum turcicum data to personalize ads and to provide you with advertising! Station, P. O turcicum, is considered a serious disease where climatic conditions are cool high...