INDIAN PHYTOPATHOLOGY
VOL. 52 , NO. 1 , 1999
CONTENTS
Jeersannidhi Award Lecture
Pathogen diversity and plant disease management R,P. Thakar 1
Virology
Virus - vector relationships of yellow vein mosaic virus and whitefly (Bemisia tabaci) m pumpkin 10
K. Jayashree, K.B. Pun and Sabitha Doraiswamy
Comparative host range and serological studies of papaya ringspot potyvirus isolates Gourgopal Roy 14
R.K. Jam, A.I. Bhat and A. Varma
Mycology
Effect of Cyperus rotundas rhizome extract on Fusarium udum U.P. Singh, B. Prithiviraj, S. Khiste
Vinod Kumar, J.S. Srivasfava, M. Manickarn and Amitabh Singh 18
Evaluation of Prosopis pods as a source of carbohydrate for enhancing the growth of soilborne fungi
Satish Lodha, M.D. Bohra and L.N. Harsh 24
Fungal Pathology
Mating type distribution, fertility and pathogenicity of rice isolates of Magnaporthe grisea in four rice
growing regions of India V. Brindha Priyadarisini, G. Viji and S.S. Gnanamanickam 28
Multiplication and infectivity ofsporidia of Tilletia barclayana, the causal organism of kernel smut of rice
S.S. Chahal, Gnrbaj Singh and P.P.S. Pannu 35
My coparasitic action of some fungi on spot blotch pathogen (Drechslerei sorokiniana) of wheatSudhamoy
Mandat, K.D. Srivastava, Rashmi Aggarwal and D.V. Singh 39
Biocontrol ofSclerotima sclerotiorum causing stem rot of chickpea S.K. Sharma, B.R. Verma and B.K.
Sharma 44
Parasitism of Sclerolium rolfsii by Trichoderma Suseelendra Desai and E. Schosser 47
Effect of soil solarization on Fusarium oxysporum f. sp Carthami populations in endemic soils
R. Kalpana Sastry and C. Chattopadhyay 51
Role of inoculum density and incubation period on saprophytic behaviour of Rhizoctonia solani and
Rhizoctonia bataticola S. Pandey, S.N. Srivastava, Ram Ji Lal and R.C. Tripathi 56
Influence of herbicides on the antifungal activity of some fungicides against Phytophthora blight ofpigeonpea
Birendra Singh, S.N. Chaturvedi and R.H. Singh 59
Variation in the production of enzymes by different isolates of Myrothecium roridum causing leafspot of
mungbean S.N. Singh and P. Shukla 63
Nematology
Effect of Heterodera cajani and Meloidogyne mcognita with Fusarium adum and Bradyrhizobnimjapomcum
on the wilt disease complex of pigeonpea Zaki A. Siddiqui and Irshad Mahmood 66
Short Communications
Alarming epidemic of rice tungro disease in North-West India A. Varma, F.R. Niau, J. Dasgupta, J.
Singil, S.S. Cheema and S.S. Sokhi 71
Changes in different nutrients and enzyme contents in mango leaves infected with Colletotfichum
gloesporioides M. Tofazzal Hossain, M. Zahangir Alam and N. Absar 75
Biochemical changes in Jasminum grandiflorum infected by Uromyces hobsoni P.K. Jite and J. Tressa 77
Fungi responsible for seedling emergence problem in different soybean cultivars in Tarai region Uma
Singh and P.N. Thapliyal 79
Fusarial wilt, a new groundnut disease in Meghalaya - Rapid screening technique for disease resistance
M. Santhalakshmi Prasad, M. Srinivas Prasad, Sangit Kumar and Satish Chandra 82
Reaction of some chickpea cultivars to Fusarium oxysporum f.sp. ciceri and Meloidogyne incognita disease
complex V. Krishna Rao and K. Krishnappa 84
Inheritance of resistance in linseed to powdery mildew (oidium lini) disease G.S. Saharan and M.S.
Saharan 86
Screening for reaction to downy mildew (Pseudoperonospora cubensis) in melonsSanjay Singh, Tarsem
Lal and P.P. Singh 88
A preliminary screening study of pot marigold cultivars for resistance to powdery mildew S. lqhal
Husain and Mohd. Akram 90
Effect of organic soil amendments against rice sheath blight B. Meena and M. Muthusamy 92
Chemical control of banded leaf and sheath blight of maize R.C. Sharma and S.N. Rai 94
Management of mungbean Cercospora leaf spot through fungicides H.J. Kapadiya and LU. Dhmj 96
Puccima cannacearum, a new rust taxon on Canna indica G. Bagyanarayana and P. Ramesh 98
New Records 100
News 103
Book Review 104