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Soni, K. K.
- Development of Arbuscular Mycorrhizae and Leaf Blight Disease in Young Plantation of 25 Species of Bamboos
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Indian Forester, Vol 134, No 9 (2008), Pagination: 1236-1244Abstract
Arbuscular mycorrhizal ischolar_main colonization, spores of AM fungi in rhizosphere soil, incidence and intensity of leaf spot disease caused by Drechslera rostrata in 3-7 years old plantations of 25 different bamboos at Amravati, Maharashtra State was evaluated. Root colonization, spore number and disease incidence and intensity varied in different bamboos. There is no definite correlation in these parameters. Maximum ischolar_main colonization was recorded in Bambusa vulgaris, B. nutans and Dendrocalamus asper. Maximum disease incidence was recorded in Dendrocalamus hamiltonii, D. asper, Bambusa ventricosa and Meloncanna baccifera. Among AM species Acaulospora scrobiculata showed the maximum frequency followed by Glomus intraradices, A. laevis and G. etunicatum.Keywords
Arbuscular Mycorrhizal Root Colonization, AM Fungi, Leaf Blight Disease, BambooPlantations
- Studies on Charcoal Root Rot of Tropical Pines in Orissa
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Indian Forester, Vol 126, No 3 (2000), Pagination: 289-294Abstract
Rhizoctonia bataticola caused severe charcoal ischolar_main-rot in tropical Pines of Orissa, India. Out of three species, surveyed Pinus caribaea was found more susceptible to this disease. Mortality rate was higher in hill top as compared to sloping and flat areas. Disease severity was noticed during hot and dry months. Bavistin or Dithane M-45 0.2 percent when combined with 0.2 percent KH2PO4 gave better protection to plants from ischolar_main-rot infection by M. phaseolina than when used alone. The antagonistic fungi G. virens and T. viride were also found effective in controlling this infection.- First Record of Trichurus spiralis Hasselbring on Seeds of Acacia nilotica : a New Report
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Indian Forester, Vol 136, No 3 (2010), Pagination: 344-348Abstract
Thirteen different provenances of Acacia nilotica were collected from different agroclimatic zones of India. Before sowing in the field, all the provenances were tested for seed mycoflora and germination. Large number of fungi belonging to different taxonomic groups were identified from seeds of A. nilotica. Aspergillus terreus showed the highest dominance in different provenances. The frequency of fungi was less in the provenances of Mandla and Jabalpur. A fungus Trichurus spiralis was recorded first time only on 6 provenances. The fungus was secreting the inhibitory substances, which possibly reduced the germination of seeds.Keywords
Trichurusspiralis, Seeds of Acacia nilotica, A New Record, Germination- In-vitro Efficacy of Trichoderma Species and Fungicides against Ganoderma lucidum
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Indian Forester, Vol 132, No 11 (2006), Pagination: 1499-1503Abstract
Study was made to test the efficacy of five Trichoderma species (biocontrol agents) and two fungicides, on suppression of Ganoderma lucidum Karst. invasion in ischolar_main block of Albizia procera Benth., tree in two type of media in-vitro. The fungicides used were Bavistin(0.2%) and Bordeaux mixture (5:5:50) while the biocontrol agents were Trichoderma pseudokoningii, T. longibrachiatum, T.atroviride. T.polysporum and an unidentified Trichoderma sp. isolated from A.procera living ischolar_main surface. The test fungus, Ganoderma lucidum was isolated from A.procera. After 8 weeks of incubation (27±2°C), Bavistin and Bordeaux mixture were found equally effective in minimizing weight losses in different combination of biocontrol agent. The best treatment combination was Bordeaux mixture + T.polysporum in sand soil medium.- Diseases of Tropical Pines in Central India
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Indian Forester, Vol 132, No 12 (2006), Pagination: 1581-1590Abstract
Tropical pines are being increasingly used in pulp and paper industry and to meet their increased demand these are being raised in plantations. Exotic and indigenous plant species are seen to suffer from various diseases. Of these, damping off of Pinus caribaea in nursery beds can be controlled by drenching the soil mix with Blitox or Fytolan. Cercospora needle blight is seen affecting P.caribaea and P.roxburghiana. Fungicides Bavistin and Dithane can be applied during monsoon period to check spread of this disease. Lophodermimam needle fall is caused by various pathogens but the damaged caused is insignificant as the pathogens are rather weak. Diplodia die back in P.caribaea plantation was seen to affect poorly growing plants and is almost absent in vigorously growing trees. Charcoal ischolar_main rot in P.caribaea can be managed by modifying nursery practices such as weeding out leguminous weeds, avoiding intercropping, avoiding fertilizers during nursery stage, planting replacements in fresh pits, so that infection does not take place.- Die Back of Leguminous Trees in Young Plantations Caused by Haplosporella in Central India
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Indian Forester, Vol 123, No 7 (1997), Pagination: 652-655Abstract
A die back disease caused by Haplosporella bakeriana in Acacia nilotica and H. beaumontiana in Albida lebbek and Pongamiapinnata is reported in the young plantations (1-5 years) ofleguminous tree species from Central India. The disease caused 25.5%, 20.8% and 11.3% damage in Acacia nilotica, Albizia lebbek and Pongamia pinnata respectively.- Susceptibility of Different Provenances of Pinus roxburgii to Cercospora Needle Blight at Amarkantak (M.P.)
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Indian Forester, Vol 116, No 1 (1990), Pagination: 58-62Abstract
The studies on needle blight disease caused by Cercospora pini-densiflorae in different provenances of P.roxburghii exhibited that there was no mortality in plants of Supkar (MP) origin and Rohri (HP) origin,whereas other provenance were highly susceptible to this infection. The heavily infected plants also exhibited a greater number of stomata and conidia in the needles. The size and septation of spores obtained from infected needles of different provenances also vary. The germination of conidia was very less or negligible in distilled water. The addition of glucose increased the higher percentage of germination. Bavistin and Dithane M-45 at 0.2 per cent concentration conSiderably checked the germination of different provenances under study. Fytolan at 0.2 per cent failed to check the germination but the germination was minimised to a considerable extent. On basis of the susceptibility of different provenances of p.roxburgii for C.pini-densiflorae it is recommended that the plants of Supkhar (MP) origin have developed a high tolerance to needle blight fungus as compared to other provenances. The plants of this origin may be used for plantation in Madhya Pradesh.- Eucalyptus Litter Decomposition in Tropical Dry Deciduous Forest of Madhya Pradesh
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Indian Forester, Vol 116, No 4 (1990), Pagination: 286-291Abstract
Fungal decomposition of Eucalyptus litter in tropical dry deciduous forest was studied for three successive years. Succession of involved mycoflora and its frequency were noticed in two litter layers at quarterly intervals. Members of Phycomycetes, Ascomycetes and Basidiomycetes were the weak colonizers whereas the Deuteromycetes were strong colonizer showing better adaptability and higher percentage distribution. Intially the C/N ratio was wide but wben the succession took place, the C/N ratio of Eucalyptus litter gradually decreased below 20 and slightly increased in the later stages of decomposition (35.5/3.02). A wide range of humidity and temperature were suitable for litter decomposition.- Charcoal Rot Disease of Boswellia serrata a New Host Record
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Indian Forester, Vol 113, No 5 (1987), Pagination: 379-380Abstract
Macrophomina phaseolina (Tassi) G. Goid. Causing ischolar_main rot and leaf blight of Boswellia serrata in nurseries at Jabalpur and Nepanagar, was a new record of tbe pathogen on the host. The disease caused severe losses to Boswellia serrata in the nursery. The infection was controlled by spraying with 0.2 and 0.1 percent bavistin or dithane M-45.- Note on Nomuraea rileyi (farlow) Samson, an Entomogenous Fungus on Tendu Defoliators, Hypocala rostrata
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Indian Forester, Vol 112, No 1 (1986), Pagination: 88-89Abstract
No abstract- Some New Host Records and Additions to Fungi of India
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Indian Forester, Vol 111, No 7 (1985), Pagination: 533-537Abstract
no abstract- Leaf Blight of Eucalyptus in Nurseries
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Indian Forester, Vol 111, No 12 (1985), Pagination: 1136-1138Abstract
no abstract- An Observation on the Incidence of Charcoal Root-rot Disease of Pinus caribaea Plantations of Bastar (M.P.)
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Indian Forester, Vol 110, No 6 (1984), Pagination: 552-557Abstract
The survey of charcoal ischolar_main-rot in Pinus caribaea caused by Macrophomina phaseolina (Tassi) Gold was conducted by random sampling technique in pine plantations of Bastar. The disease percentage was found to vary from compartment to compartment depending upon the land topography. Due to excessive run-off and lack of moisture on steep slopes as also under water logging conditions, the result of moisture stress causes maximum damage to plants on account of pathogen attack. Control measures have been suggested to prevent and minimize the disease menace in nursery and in plantation area.- Studies on Charcoal Root Rot of Pinus caribaea
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Indian Forester, Vol 108, No 9 (1982), Pagination: 618-622Abstract
Macrophomina phaseolina (Tassi) Goid caused a serious charcoal ischolar_main rot disease of Pinus caribaea seedlings in nurseries and plantations in M. P. It was estimated that the seedlings of P. ctiribaea suffered a heavy loss due to this infection. The whole of the ischolar_main system was involved in the processes of infection by M. phaseolina which penetrated Ihe vascular cylinder of the seedlings and young plants. It was much likely that the translocation the solutes was disturbed. A large number of sclerotia were developed during the process of senescence of the seedlings which exhibited the sign of death of the plants. The disease was favoured by bot summer months. Some measures for the control of the disease were suggested. A review of existing literature indicated that this disease is being reported for the first time from India.- Studies on Fusicladium Leaf Spot of Pongamia pinnata
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