M. D. Mehrotra , S. N. Khan , R. K. Tivari , B. M. Misra

Abstract

A disease calendar for nine fungal diseases of Albhia lebbek is prepared for the first time. This will help in management of the diseases of this important tree species in the nursery. Camptomeris leaf spot, an important nursery disease has been effectively controlled by the application of Topsin-M, Jkstein and Dithane M-45. Three to four applications of any of the effective fungicides at tri weekly intervals are recommanded for disease management.

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R. K. Tivari , S. N. Khan , P. C. Pandey , B. M. Misra

Abstract

Phoma nivea(Syd) Shrivastava and Bhargava forming stem cankers and Myrothecium roridum Toda ex. Fr. Causing leaf spot recorded as new pathogens on Dalbergia sissoo Roxb. Disease symmptoms caused by these pathogenes are described.

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S. N. Khan , R. K. Tivari , B. M. Misra , D. S. Rawat

Abstract

Experiments were conducted to evaluate different fungicides against Cladosporium humile J.J. Davis, a serious foliage pathogen of poplars and to study disease development in Shilli Nursery, Solan (H.P.). Dithane M-45(0.35%) was found most effective followed by a mixture of Dithane M-45 and Bavistin (0.2 and 0.05% respectively) and Dithane M-45 (0.25%) Disease development studies revealed that the pathogen overwinters on the fallen leaves, dormant buds, in lenticels and bark crevices of the standing plants. The infection begin to appear on the plants in the month of May and progressed to a highest disease index in November. Measures to control and contain the disease have been suggested.

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H. S. Sehgal , R. K. Tivari , S. N. Khan , B. M. Misra

Abstract

The diseases of forestry species (except poplars) in nurseries, plantations and natural forests in H.P. are described along with their control measures, giving details only of potential important ones. The importance of continuous surveillance of forests is stressed.

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