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Dadwal, V. S.
- Economics of Biofertilizer Application on Production of Planting Propagules of Teak in a Commercial Nursery
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Indian Forester, Vol 134, No 7 (2008), Pagination: 923-931Abstract
Effect of application of biofertilizers, Azospirillum, phosphate-solubilising bacteria (PSB) and arbuscular mycorrhizal (AM) fungi was studied in a factorial experiment on production of planting propagules (stumps) of teak in nursery. Seed germination was maximum in Azospirillum treatment followed by its combination with AM and PSB after two months. Maximum height of seedlings was recorded in AM + Azospirillum, AM + PSB and AM+PSB+ Azospirillum combination after five months. Diameter of seedlings at collar region was maximum in AM, AM + Azospirillum and AM + Azospirillum + PSB combinations. The economics of biofertilizer application is also worked out. Application of biofertilizers increase the number of stumps produced per bed as well as the diameter of stumps. Therefore, an artificial profit index was calculated combining the both parameters to infer the real benefit of biofertilizers' application. Based on the profit index application of AM fungi along with Azospirillum was found the best treatment to produce quality planting propagules of teak in a commercial nursery.Keywords
Teak Propagules, Commercial Nursery, Biofertilizer Application, Economics
- Cultivation of Ganoderma lucidum (Fr.) Karst.
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Indian Forester, Vol 130, No 4 (2004), Pagination: 435-440Abstract
The extract of the fungus Ganoderma lucidum is used for treatment of joint pains, as elixer of life, good health and well-being. It is commercially cultivated in China, Japan, USA and Malayasia but so far it has not been cultivated in India. It has several host trees species in India and fresh isolates were obtained from infected ischolar_mains for taking up its cultivation. The results show that spawn and fruit bodies grown on chips and logs of Delonix regia are the best and in them those grown on chips, are still beter. Chips and logs of other species tried gave inferior results.- Biocontrol of Important Pathogens of Forestry Species by Streptomyces Formulation
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Indian Forester, Vol 129, No 10 (2003), Pagination: 1270-1280Abstract
Streptomyces sp. was isolated from soil and was screened in the laboratory for antagonistic activity against pathogens of forest tree species viz. Alternaria alternata ,Curvularia lunata , Sarocladium oryzae , Fusarium oxysporum , Ganoderma lucidum and Macrophomina phaseolina. On basis of laboratory studies , it was also tried to control the seed microflora of Albizia lebbek. Suitable formulation was developed after growing Streptomyces sp. in seventeen different substrates. Farm yard manure and chicken manure were found as the best substrates and they were found as the best carrier for this biocide. Streptomyces sp. was also multiplied in bulk by using lab fermentar in liquid PDA medium. The inoculum in bulk was prepared by using farm yard manure as the carrier for field application. Post emergence damping off diseases of A. procera , A. lebbek and D. sissoo were also controlled. The growth and biomass of these species were also enhanced by treatment with Streptomyces sp. The trial of Streptomyces sp. to control sheath blight disease of D. asper also gave good performance by encouraging the healthy culms. Trials of Streptomyces sp. in the present study exhibited successful control of differcnt pathogens as compared with the fungicidal treatments. The use of this bioagent was bencficial from pesticidal residue problems and also to safe guard the soil in nurscry and plantations. It is a self-multiplying species of Streptomyces in soil , which is antagonistic to a number of soil borne pathogens. It appears a new species of Streptomyces. It can be concluded that this Streptomyces sp. can be used to control the different pathogen which are responsible for causing seed borne diseases , ischolar_main diseases , damping off and leaf blight diseases in the nursery. The multilocational trials of the bulk cultures of this bioagent against ischolar_main pathogens are under trials.- Role of Storage Fungi in Germination of Strychnos potatorum Linn. f. Suppl.
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Indian Forester, Vol 129, No 10 (2003), Pagination: 1297-1299Abstract
No abstract- A Note on Sheath Blight of Dendrocalamus asper and its Control
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Indian Forester, Vol 128, No 4 (2002), Pagination: 470-472Abstract
No abstract- A Note on Basal Canker of Teak (Tectona grandis) in Plantations
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Indian Forester, Vol 127, No 3 (2001), Pagination: 365-366Abstract
No abstract- Bacillus firmus as Bio-controlling Agent for Seed-borne and Nursery Pathogens of Forest Tree Species
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Indian Forester, Vol 136, No 2 (2010), Pagination: 158-162Abstract
Antagoistic bacteria were isolated from soil samples collected from different forest areas of Jabalpur, Mandla, Umaria and Bilaspur. One antagonistic bacteria Bacillus firmus was isolated from the soil of Belkund teak forest nursery, Kundam Project, Forest Development Corporation, Jabalpur. To study its effectiveness against pathogen associated with leguminous seeds eleven days old culture of B. firmus was applied to the the seeds of Albiziaprocera, A. lebbek, Dalbergia sissoo and Acacia nilotica and was compared with culture of the bio-agent Trichoderma viride and fungicides namely Indofil and Bavistin 0.2%. The seeds treated with the culture of B. firmus did not show any fungal flora during germination and at the same time per cent emergence of treated seedlings was also high. The suspension of B. firmus was also applied to one month old seedlings of A. procera and A. lebbek inoculated with Fusarium oxysporum causing post emergence damping off disease in these seedlings. The experimental finding shows that the seedlings of A. procera and A. lebbek inoculated with B.firmus did not show any mortality, which proved that the application of B. firmus could be used as bio-controlling agent against post-emergence damping off disease inforest nurseries.Keywords
Bacillus firmus, Seed -Borne and Nursery Pathogens, Bio-Controlling Agent, Acacia nilotica, Albiziaprocera, Albizia lebbek and Dalbergia sissoo- Fusarium oxysporum - an entomogenous fungus on Bruchus bilineatopygus (pic) a Severe Seed Borer of Albizia lebbek
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Indian Forester, Vol 123, No 8 (1997), Pagination: 781-782Abstract
No abstract- Foot Rot, a New Dlfsease of Boswellia serrata Caused by Fusarium oxysporum and its Control
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Indian Forester, Vol 122, No 4 (1996), Pagination: 331-333Abstract
Foot rot, a new disease of Boswellia serrata caused by Fusarium oxysporum was recorded in young seedlings in the nursery during March and April. The pathogen is soil-brone and caused considerable loss in the nursery. The pathogenicity has been established on different substrates by standard methods. Some fungicides viz., P.M.A., topsin, bavistin, thiram, ceresan, fytolan and dithane M-45 have been used by seed treatment before sowing. Amongst the fungicides tried, thiram and topsin were found significant in controlling this disease.- A New Post-emergence Damping-off Disease of Eucalyptus Seedlings
Abstract Views :465 |
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Indian Forester, Vol 118, No 4 (1992), Pagination: 279-283Abstract
A new post-emergence damping-off disease of Eucalyptus hybrid caused by Verticillium sp. has been reported and studied in detail. It is an internally seed borne disease causing as much as 80% mortality, of seedlings. The disease can be controlled by seed dip treatment for 5 min. In 0.2% solution of Topsin-M or Bavistion.- A Leaf Spot Disease of Ficus religiosa and its Control
Abstract Views :282 |
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Indian Forester, Vol 118, No 8 (1992), Pagination: 599-600Abstract
No abstract- A New Canker Disease of Samanea saman
Abstract Views :236 |
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Indian Forester, Vol 117, No 1 (1991), Pagination: 77-77Abstract
No abstract- 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.- A New Record of Beauveria bassiana. an Entomogenous Fungus on Atteva fabriciella (Allanthus Webworm)
Abstract Views :223 |
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Indian Forester, Vol 115, No 3 (1989), Pagination: 194-195Abstract
No abstract- Role of Fungi in Weathering of Teak Fruits
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Indian Forester, Vol 114, No 6 (1988), Pagination: 328-330Abstract
A wide variety of fungal flora is involved during the process of natural weathering of teak fruit. Scytalidium sp. exhibited fast decomposition of epicarp from the fruit which resulted the completion of weathering of teak fruits within 21 days. The seeds extracted from such weathered lot through use of Scytalidium sp. exhibited high percentage of germination as compared with the other treatments. It is recommended that Scytalidium sp. can be used for fast weatherlng of teak fruits.- Cercospora Blight Disease of Melia azadirachta
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Indian Forester, Vol 114, No 12 (1988), Pagination: 894-895Abstract
No abstract- A Note on Parasitism of Aspergillus flavus on Ailanthus Web Worm
Abstract Views :209 |
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Indian Forester, Vol 113, No 10 (1987), Pagination: 707-708Abstract
No abstract- Note on Nomuraea rileyi (farlow) Samson, an Entomogenous Fungus on Tendu Defoliators, Hypocala rostrata
Abstract Views :177 |
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Indian Forester, Vol 112, No 1 (1986), Pagination: 88-89Abstract
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.- The Studies on Nodulation Behaviour in Leucaena leucocephala
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Indian Forester, Vol 110, No 12 (1984), Pagination: 1149-1154Abstract
The nodulation behaviour in different age group of Leucaene leucocephala K-28 was studied in detail. The number of nodules considerably increased with age. The culture of rhizobium enhanced the height growth of the seedlings in laborotory and nursery conditions. The height growth and survival percentage of Leucaene seedlings in the field trial plantations were more when the seedling stock for plantation was used from seedlings grown in polythene as compared to those directly transplanted from nursey beds. The application of nitrogen fertilizer (area) in potted mixture supressed the nodule formation. It has been found that rhizobium inoculation can boost up Ibe growth of nursery stock of L. leucoctphala by producing a healthy stock of high vigour for large scale plantation of Leucaena in silvipastrol systems and social forestry programmes.- Studies on Fusicladium Leaf Spot of Pongamia pinnata
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Indian Forester, Vol 107, No 8 (1981), Pagination: 500-504Abstract
Fusicladium pongamae Syd. Caused severe foliage blight of Pongamia pinnata Pierre in nurseries. The symptoms, histopathology and pathogenicity of the organism were studied. There was heavy conidiation by the organism which germinated at appropriate humidity and temperature thereby infecting the healthy leaves. Sugars, organic acids and phenolics were observed chromotographically in healthy and the diseased leaves. The increase in the organic acid and phenolics was related with the mechanism of disease resistance during infection processes. Amongst the fungicides tried, bavistin, ziride and benlate were more effective in controlling the infection. Any of these fungicides may be sprayed at 0.2 per cent when the inoculum in the form of spores very less.- Study of the Effect of Gibberellic Acid Urea and Rallis Tracel on the Growth of Teak in the Nursery-I. Enhancement of Growth of Seedling to Transplantable Size in the same Growing Season-a Veritable Possibility
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Indian Forester, Vol 104, No 10 (1978), Pagination: 706-713Abstract
The effect of gibberellic acid and nutrients on the growth of teak (Tectona grandis) seedlings in the nursery has been studied. Gibberellic acid when applied alone enhanced height growth of seedlings but at the same time caused ill effects on plant growth. The plants were lanky, chlorotic and developed leaves much reduced in size. The ill effects were more pronounced at 200 ppm than at 100 ppm. However, when the treatment of seedlings with gibberellic acid at 100 ppm was followed by weekly application of urea aad Rallis Tracel, it not only caused reversal of ill effects but alao increased appreciably overall growth of the plants. The plants were vigourously growing and were taller and stouter than the control seedlings. Teak seedlings responded positively to the application of urea The growth of seedlings was considerably enhanced and they developed leaves larger than the control seedllngs. Rallis tracel when applied in combination with urea further increased leaf size and the leaves in this treatment were largest in size. Root-shoot cuttings of the seedlings treated with urea, urea + Rallis Tracel, gibberellic acid at 100 ppm + urea + Rallis tracel and control seedlings when planted in the field showed 100% sprouting in all the cases. Utilization of nursery stock for planting in the same growing season has been emphasized. It is suggested that by early sowing of seed, adequate watering of seedlings during summer months, judicious application of growth hormones and nutrients it may be possible to increase growth of teak seedling. In the nursery to transplantable size by the middle of Jully in the same growing season, instead of middle of August as obtained in the present investigation.- Potential Pathogens and Insects Responsible for Low Seed Production in Teak Seed Orchard and their Management
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