Sorghum Diseases in India

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Vidyabhushanam: In the case of diseases, control is based entirely on resistance/tolerance that is fortunately advantageous for (attempting control of) most of the diseases. However, with insects we are operating at a moderate level of tolerance and insect control is mainly based on avoidance and cultivation practices. Nevertheless in the breeding programs for crop improvement all aspects—like yield, pest and disease resistance, damage tolerance, and grain quality—are taken into account. 370 Obilana: Since many disease-resistant cultivars are susceptible to insects, it is pertinent to suggest that we utilize population-improvement techniques, which I see as the most plausible approach to incorporation of resistances to both insects and diseases. The sorghum-population breeding programs at SADCC/ICRISAT Sorghum and Millets Improvement Progarm and at ICRISAT Center are commendable but they need to be upgraded in research time towands providing adaptable breeding stock for national breeding programs.
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Abstract Citation: de Milliano, W.A
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INTSORMIL USAID Title XII Collabora
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Foliar Diseases of Sorghum G.N. Odv
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Despite all the complexities of the
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Resistance to ergot in pearl millet
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Sorghum and Pearl Millet Pathology
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inicola), head mold (Curvularia lun
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to W. A. J. de Milliano and S. D. S
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Table 1. Area ('000 ha) sown to sor
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annual regional meetings have been
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sowing of the ZSV 1 spreader rows a
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Zambia, and Zimbabwe. Several entri
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References Angus, A. 1965. Annotate
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Sorghum Diseases in Eastern Africa
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The Striga spp are invariably a maj
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Sorghum Diseases in Western Africa
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or six leaves only towards maturity
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Odvody, G.N. 1986. Gray leaf spot.
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Table 1. Forage sorghum production
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References Japan: Ministry of Agric
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keting problems, absence of financi
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lines) and tar spot (51 resistant l
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Karganilla, A.D., and Elazegui, F.A
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espectively. Elevation above mean s
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Sorghum Diseases in India: Knowledg
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India Coordinated Sorghum Improveme
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more from disease than did those ma
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Sundaram (1977) reported control of
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Multiple disease resistance insect
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1976. Control of foliar diseases of
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Sorghum Diseases in Brazil C.R. Cas
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tention is therefore being given to
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deficit and high temperatures are c
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Sorghum Diseases in South America E
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term, proposed by Glueck et al. (19
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Sorghum Diseases in Central America
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Zonate leaf spot, a disease incited
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National Research Efforts Crop impr
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America: importancia, localizacion
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eilianum). Both hybrids have female
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Disease research conducted in Mexic
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een observed, the disease is potent
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Mexico, particularly in Tamaulipas.
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cion de variantes del virus del mos
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Figure 1. Agroecological sorghum-gr
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Table 2. Continued Common name Caus
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Even so, certain diseases have been
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Part 2 Regional and Country Reports
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S. hermonthica predominates in Sahe
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sibly through doubled haploids. An
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Sclerotia in the soil germinate to
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easily identified than ergot resist
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Appadurai, R., Parambaramani, G, an
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Ramakrishnan, T.S. 1963. Disease of
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Thakur, R.P., Rao, V.P., Williams,
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Downy Mildew The downy mildew organ
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Ekukole (1985) found a few infectio
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Selvaraj, J.C 1979. Research on pea
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Table 1. Area ('000 ha) sown to pea
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Foliar diseases Foliar diseases in
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Charcoal rot was observed in drough
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isms of Mozambique. Tropical Pest M
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and Australia. In India, the diseas
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more than a decade ago, rust would
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Ergot Disease of Pearl Millet: Toxi
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ghum, the other cereal important in
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Part 3 Current Status of Sorghum Di
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Table 1. Bacterial diseases of sorg
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upwards of 20 cm with the leaf and
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strains produced a hypersensitive r
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at room temperature, or overnight a
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and high humidity. The bacteria are
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Bacterial Streak Causal organism X.
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Figure 10. Xanthomonas campestris p
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incited by Pseudomonas andropogonis
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Detection and Identification of Vir
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observed. Testing for potential vec
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acid hybridization, cloning, and se
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Smith, B.J. 1984. SDS Polyacrylamid
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direct effects on sorghum seedling
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cumbing to preemergent damping-off
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Sorghum in the Eighties. Proceeding
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Table 1. Foliar pathogens of sorghu
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sclerotia or on leaf lesions are bo
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pathogen(s) being evaluated. Isogen
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the length of rotation necessary to
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Frederiksen, R.A., and Rosenow, D.T
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Nematode Pathogens of Sorghum J.L.
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greenhouse tests. Furthermore, he o
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of soil Typical symptoms of L. afri
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Norton, D.C. 1958. The association
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African farmers on impoverished soi
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Taxonomy and biosystematics In spit
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Information about this genus is not
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and Millets Improvement Program Bul
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ern and southern Africa. Framida wa
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lar genetics to isolate resistance
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Obilana, A.T. 1983b. Striga studies
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Anthracnose of Sorghum M.E.K. Ali 1
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ales and Frederiksen (1979) reporte
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sociation (GSPA) and Sorghum Improv
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Physiological Races of Colletotrich
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Gerais, and at Jatai, Goias from th
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Current Status of Sorghum Downy Mil
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oospores in the soil (Odvody and Fr
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corn and sorghum in south Texas. I:
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Eighteen papers in the proceedings
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iliforme var intermedium, E solani,
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Table 2. Lodging, soft stalk, and y
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Figure 2. Periodical lodging (%) in
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Table 4. Lodging, soft stalk, nodes
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Mughogho, R. Bandyopadhyay, and S.
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Andhra Pradesh 502 324, India: Inte
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Rosenow, D.T. 1980. Stalk rot resis
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green and slightly shriveled, in co
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pollination (Patil and Goud 1980),
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Table 1. Reported hosts and nonhost
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pathogen and epidemiology of the di
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Shaw, B.L, and Mantle, P.G. 1980a.
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Table 1. Comparison of sorghum smut
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Figure 2. Scanning electron microgr
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Table 2. Comparison of disease inte
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Natural, M. 1983. Ultrastructural a
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Khare 1982; El Shafie and Webster 1
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estricted to the pericarp, but pene
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other areas of research, including
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Resistance mechanisms In the last 1
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ulum dynamics in disease developmen
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Naik, S.M., Singh, S.D., and Mathur
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Glume Lemma- Ovarian locule Nucellu
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high levels of free phenolic compou
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20 Figure 10. Free p-coumaric acid
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and glumes during development. Cere
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molds. In the early 1980s, sources
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Grains of all the F1S were brown an
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Table 2. Mean threshed grain mold r
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hardness and its relationship to di
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Table 5. Testa (B1-B2-) and spreade
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phenolic acids in mold-resistant so
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Part 4 Short Communications
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Abstract: Abstract: Sorghum disease
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Abstract: Studies on the biology of
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Part 5 Other Topics
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lated to seed-health requirements f
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Colletotrichum graminicola, the cau
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McGee, D.C. 1981. Seed pathology: i
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In recent years, the government has
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Table 1. Diseases and pathogens ide
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severities. Standard area diagrams
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Table 5. Yield and gray leaf spot s
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Cultivar CS 3541 is not.resistant t
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population densities for optimum yi
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example, in plant growth stage at w
Page 329 and 330: Using Germplasm from the World Coll
Page 331 and 332: for accurate evaluation of resistan
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Page 335 and 336: Using the World Germplasm Collectio
Page 337 and 338: that do not lodge are selected. Pos
Page 339: Part 6 Building for the Future
Page 342 and 343: orne conidia (asexual spores) of Pe
Page 344 and 345: fully established the pearl millet
Page 346 and 347: 4. Using male sterile and fertile c
Page 348 and 349: of resistance to grain deterioratio
Page 350 and 351: a. We recommend that ICRISAT assemb
Page 352 and 353: Each member of the discussion group
Page 355: Appendix
Page 358 and 359: develop technologies that can enabl
Page 360 and 361: Dalmacio: Mainly due to lack of mar
Page 362 and 363: Vidyabhushanam: What are the diseas
Page 364 and 365: Guiragossian: Farmers and children
Page 366 and 367: Odvody: Heavier (clay) soils retain
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Page 370 and 371: say, sooty stripe and leaf blight.
Page 372 and 373: the selection criterion that you ha
Page 374 and 375: cattle, but other studies suggest t
Page 376 and 377: If it is argued that oospore infect
Page 378 and 379: Craig: On the basis of our experien
Page 384: ICRISAT International Crops Researc
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Sorghum Diseases in India

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