Proceedings of the Consultative Group Discussion on Research Needs and Strategies for Control of Sorghum Root and Stalk Rot Diseases (Bellagio, Italy 27 Nov - 2 Dec 1983). — ICRISAT (International Crops Research Institute for the Semi-Arid Tropics), 1984. — 267 pp.Despite several decades of research, diseases remain a major constraint to sorghum production throughout the world. That was the reason ICRISAT and Texas A&M University cosponsored the first international workshop on sorghum diseases, hosted by ICRISAT at Hyderabad, India, in December 1978. It was also the reason for a second major international effort exactly 5 years later, by INTSORMIL and ICRISAT, to gain more understanding for better control of these diseases. This took the form of a highly specialized consultants' group meeting to make recommendations on the research needs and strategies for control of sorghum root and stalk rots.
Root and stalk rots are a group of diseases that reduce crop stands in the emergence and seedling stages, or most commonly cause stalk lodging in the postflowering and grain-filling stages of plant development. The improved high-yield potential varieties and hybrids under good management tend to be particularly susceptible to lodging induced by root and stalk rot. Although good progress has been made against other diseases of sorghum, research for control of root and stalk rots has been painfully slow. This is due to the complexity of the diseases themselves and the paucity of intensive interdisciplinary research on them.
Contents:
Foreword.
Inauguration.
Opening address and objectives of the meeting (L.K. Mughogho).
Welcome from ICRISAT (C.R. Jackson).
Welcome from INTSORMIL (E.R. Leng).
Basic Disease Problems.
Charcoal rot of sorghum (L.K. Mughogho and S. Pande).
Fusarium root and stalk disease complex (N. Zummo).
Pythium root and seedling rots (G.N. Odvody and G. Forbes).
Anthracnose stalk rot (R.A. Frederiksen).
Periconia root rot (G.N. Odvody and L.D. Dunkle).
Acremonium wilt (R.A. Frederiksen).
Plant-parasitic nematodes affecting sorghum (L.E. Claflin).
Spatial and temporal succession of fungal species in sorghum stalks as affected by environment (J.E. Partridge, J.E. Reed, S.G. Jensen, and G.S. Sidhu).
Summary and synthesis (L.K. Mughogho).
Discussion.
Physiological and Environmental Factors in Root and Stalk Rot Diseases.
Role of edaphic factors in disease development (W.R. Jordan, R.B. Clark, and N. Seetharama).
The association of plant senescence with root and stalk diseases in sorghum (R.R. Duncan).
Morphological and physiological factors associated with stalk strength (J.W. Maranville, and M.D. Clegg).
Relation of senescence, nonsenescence, and kernel maturity to carbohydrates and carbohydrate metabolism in sorghum (G.G. McBee).
Sorghum sensitivities to environmental stresses (J.D. Eastin, C.Y. Sullivan, J.M. Bennett, A.M. Dhopte, T.J. Gerik, V.A. Gonzalez-Hernandez, K.-W.Lee, V. Ogunlela, and J.R. Rice).
Summary and synthesis (D.F. Schoeneweiss).
Discussion.
Experience with Root and Stem Rots of Crops Other than Sorghum.
The maize root rot, stalk rot, lodging syndrome (A.J. Pappelis and J.N. BeMiller).
Root and stalk rots caused by Macrophomina phaseolina in legumes and other crops (J.B. Sinclair).
Summary and synthesis (J.E. Partridge).
Discussion.
Control of Sorghum Root and Stalk Rots.
The role of fungicides in the control of sorghum root and stalk diseases (R.J. Williams and O. Nickel).
Cultural and biological control of root and stalk rot diseases of sorghum (B. Doupnik, Jr.).
Breeding for resistance to root and stalk rots in Texas (D.T. Rosenow).
Breeding for stalk rot resistance as a component of acceptable agronomic performance (A.B. Maunder).
Lodging, stalk rot, and root rot in sorghum in Australia (R.G. Henzell, R.L. Dodman, A.A. Done, R.L. Brengman, and P.E. Mayers).
Summary and synthesis I (R.W. Schneider).
Summary and synthesis II (J.F. Scheuring).
Discussion.
Group Discussions and Recommendations.
Meeting Organization and Participants.
