A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Borah, R. K.
- Cherrapunjee's Forest-fire: Need Immediate Control Measure
Authors
Source
Indian Forester, Vol 136, No 3 (2010), Pagination: 382-387Abstract
Forest Fire, an anti environmental human activity, is becoming a great threat for eco restoration of Cherrapunjee-the site famous as wettest place on earth. Human's carelessness, negligence and ignorance are the main causes of annual ground fire resulting into pronounced and prolonged ill effect on climate, land use, land cover, biodiversity and forest ecosystem. There is an urgent need of fire management practices based on scientific technology, where emphasis should be given on people's participation through Joint Forest Management Programme.Keywords
Wildgroundfire, Ill Effects, Management, Cherrapunjee- Vertwillium Wilt of Polyalthia longifolia - a New Disease Report from India
Authors
Source
Indian Forester, Vol 136, No 3 (2010), Pagination: 388-392Abstract
Verticillium dahliae was identified as a pathogen causing wilt disease of Polyalthia longifolia. It was isolated from the infected ischolar_mains of the seedlings collected from Central Forest Nursery of Imphal, Manipur, India. Four fungicides viz. Bavistin 50% WP, Dithane M-45, Dithane Z-78 and Fytolan 50% WP were screened against the pathogen at different concentrations using poison food technique in vitro and then in field-conditions using soil drenching technique. The results revealed that Bavistin 50% WP was most effective at 75 ppm with 100% growth inhibition followed by Dithane M-45, Dithane Z-78 and minimum efficacy was observed by Fytolan 50% WP with 31.27% growth inhibition in laboratory conditions. All selected fungicides were evaluated against pathogen in field conditions at 0.1% and 0.2 % concentrations. Bavistin 50% WP was found to be the most effective at 0.2% concentration. Thus the present study recommends soil drenching with Bavistin 50% WP at aminimal concentration of 0.2% for management of the disease.Keywords
Verticillium dahliae, Wilt, Polyalthia Longifolia, Disease Management- Biocontrol of Five Invasive Weeds of Meghalaya-A Case Study
Authors
1 Rain Forest Research Institute, Post Box No. 136, Jorhat - 785001, Assam, IN
Source
Journal of Biological Control, Vol 33, No 2 (2019), Pagination: 137-142Abstract
The state of Meghalaya, in North East India is endowed with a dense cover of natural forest. A vast majority of the forests are owned by communities who traditionally practice shifting cultivation. This has resulted in significant reduction of the original forest area leading to a drastic change in the floristic composition of the state. This is evident by the ubiquitous presence of various invasive weeds such as Mikania micrantha, Chromolaena odorata, Ageratum conyzoides, Spilanthes paniculata and Spermacoce hispida. A survey for natural fungal enemies against these weeds was carried out in the state with the objective of identifying potential biocontrol agents. A total of six pathogenic fungi were isolated from infected leaves of these target weeds. Of these, two fungi isolated from leaf spot and leaf necrosis disease of Mikania micrantha were identified as Gliocladium roseum and Phomopsis sp., respectively. The fungus isolated from S. paniculata, C. odorata, and A. conyzoides was Fusarium solani and from Spermococe hispida it was F. acuminatum. Pathogenicity test carried out on target weeds and agricultural crops grown in Meghalaya (Maize, Chilli, Tomato, Rice and Ginger) showed that all the isolated fungi were found infecting the weeds from which they were isolated and also maize and tomato. They were found non non pathogenic to seedlings of some economically important tree species of Meghalaya, viz., Pinus kesiya, Magnolia champaca, Alnus nepalensis, Chukrasia tabularis, Exbucklandia populnea and Castanopsis indica. Hence, these fungi can be tested in field condition on pilot scale, in forest areas but not in agricultural areas where maize or tomato is grown.
Keywords
Biocontrol, Fungi, Invasive, Meghalaya, Weeds.References
- Chetti MB, Hiremath SM, Prashanti SK, Mummigatti UV, Kulkarni. 2001. Survey and Screening of various Pathogens for Biological Control of Chromolaena odorata. Status of Mikania infestation in Northeastern India: Management options and Future Research Thrust, pp. 146-149. In: Sankaran KV, Murphy ST, Evans, HC (Eds.), Alien Weeds in Moist Tropical Zones: Benes and Benefits. Kerela Forest Research Institute, Peechi, Kerala, India.
- Gogoi AK. 2001. Status of Mikania infestation in Northeastern India: Management options and Future Research Thrust, pp. 77-79. In: Sankaran KV, Murphy ST, Evans HC (eds.), Alien Weeds in Moist Tropical Zones: Benes and Benefits. Kerela Forest Research Institute, Peechi, Kerala, India.
- Haridasan K, Rao RR. 1985. Forest Flora of Meghalaya. Bishen Singh and Mahendra Pal Singh, Dehradun, Vol. 1.
- Kaur M, Aggarwal NK, Kumar V, Dhiman R. 2014. Fusarium solani as biocontrol agent against parthenium weed. Mycopathology 12: 83-86.
- Pimentel D, Zuniga R and Morrison D, 2005. Update on the environmental and economic costs associated with alien-invasive species in the United States. Ecol Econom. 52(3): 273-288.
- Rao RR, Sagar K. 2012. Invasive alien weeds in the tropics: the changing pattern in the herbaceous flora of Meghalaya in North East India, pp. 189-198. In: Bhatt JR, Singh JS, Singh SP, Tripathi RS, Kohli RK (Eds.). Invasive Alien Plants: An Ecological Appraisal for the Indian Subcontinent. CABI International, CPI Group (UK) Ltd., Croydon, UK.
- Richardson DM, Pysek P, Rejmanek M, Brbour MG, Panetta FD, West CJ. 2000. Naturalization and invasion of alien plants: Concepts and definitions. Divers Distrib. 6, 93-107. https://doi.org/10.1046/j.1472-4642.2000.00083.x
- Rosskopf EN, Charudattan R, DeValerio JT, Stall WM. 2000. Field evaluation of Phomopsis amaranthicola, a biological control agent of Amaranthus spp. Plant Dis. 84: 1225-1230.
- Vitousek PM, D’Antonio C, Loope LL, Rejmanek M, Westbrooks R. 1997. Introduced species: a significant component of human-caused global change. New Zealand J Ecol. 21: 1-16
- Waghmare MB, Waghmare RM, Kamble SS. 2011.Bioefficacy of plant extracts on growth of Botrytis cinerea causing leaf blight of rose. Bioscan 6: 643.
- Effect of IPM Modules on Major Pests and their Natural Enemies in King Chilli Capsicum Chinense in Northeast India
Authors
1 College of Horticulture, Central Agricultural University (Imphal), Thenzawl, Mizoram 796186, IN
2 College of PG Studies in Agricultural Sciences, Central Agricultural University (Imphal), Umiam, Meghalaya 793103, IN
3 Department of Entomology, Assam Agricultural University, Jorhat, Assam 785013, IN
4 Department of Plant Pathology, Assam Agricultural University, Jorhat, Assam 785013, IN
5 KVK, Central Agricultural University (Imphal), Andro, Manipur 795049, IN
Source
Indian Journal of Entomology, Vol 84, No 1 (2022), Pagination: 105-108Abstract
A field experiment to evaluate some IPM modules against major pests viz., Aphis gossypii, Myzus persicae, Bemisia tabaci and their natural enemies viz., coccinellids and spiders occurring in king chilli Capsicum chinense Jacquin was carried out during rabi (2014-16) at Jorhat, Assam. The results revealed that module M2 with seedling root dip treatment with imidacloprid 17.8 SL @ 40g a.i./ ha + growing of border crop (okra)+ spraying of imidacloprid 17.8SL @ 40g a.i./ ha at 20 days after transplanting at 15 days interval is the most effective in suppressing aphids and whitefly followed by lambdacyhalothrin instead of imidacloprid in both the seasons. The insecticidal treatment modules had a significant effect on the pest and the viral diseases, thereby increasing the yield, with maximum yield obtained in module M2 (3564.44 kg/ ha) and with a maximum cost-benefit ratio of 1: 4.85.Keywords
Capsicum chinense, IPM modules, Aphis gossypii, Myzus persicae, Bemisia tabaci, coccinellids, spiders, imidacloprid, lambdacyhalothrin, seed treatment, spray, yield, cost benefits, AssamReferences
- Baruah B R. 2014. Transmission and integrated management of viral disease complex of Bhut Jolokia. M Sc (Agri) Thesis, Assam Agricultural University, Jorhat, India.
- Baruah B R, Kashyap A, Nath P D. 2016. Incidence, detection and integrated management of viral disease complex in Bhut Jolokia, a chilli cultivar in Assam. Annals of Plant Protection Sciences 24(1): 136-141.
- Baruah S, Zaman Md K, Rajbongshi P, Das S. 2014. A review on recent researches on Bhut Jolokia and pharmacological activity of capsaicin. International Journal of Pharmaceutical Sciences Review and Research 24(2): 89-94.
- Begam N. 2015. Incidence and management of insect pests of hot chilli, Capsicum chinense Jacq. M Sc (Agri) Thesis, Assam Agricultural University, Jorhat, India.
- Begam N, Saikia D K, Borkakati R N. 2016. Seasonal incidence of major insect pests and their natural enemies of Bhut Jolokia. Annals of Plant Protection Sciences 24(2): 259-264.
- Begum K R, Patil S, Mohite P. 2016. Evaluation of newer molecules of insecticides against sucking pest complex infesting okra. Indian Journal of Applied Research 6(2): 30-34.
- Buragohain P, Saikia D K, Borkakati R N, Dutta B C, Thangjam R. 2017. Pest complex and the population dynamics of major pests of Bhoot jolokia. Ecology, Environment and Conservation 23(3): 265-272.
- Chiranjeevi C H, Reddy I P, Neeraja G, Narayanamma M. 2002. Management of sucking pests in chilli (Capsicum annuum L.). Vegetable Science 29(2): 197.
- Das G. 2013. Efficacy of Imidacloprid, a nicotinoid group of insecticide against the infestation of chilli aphid, Myzus Persicae (Hemiptera: Aphididae). International Journal of Biological Sciences 2(11): 154-159.
- Fritz L L, Heinrichs E A, Machado V, Andreis T F, Pandolfo M, de Salles S M, de Oliveira J V, Fiuza L M. 2013. Impact of lambda-cyhalothrin on arthropod natural enemy populations in irrigated rice fields in southern Brazil. International Journal of Tropical Insect Science 33(3): 178-187.
- Karthikeyan K, Jacob S, Purushothman S M, Revi S. 2008. Effect of spinosad against major insect pests and natural enemies in rice ecosystem. Journal of BioIogical Control 22(2): 315-320.
- Khani A, Ahmadi F, Ghadamyari M. 2012. Side effects of Imidacloprid and Abamectin on the mealybug destroyer, Cryptolaemus montrouzieri. Trakia Journal of Sciences 10(3): 30-35.
- Nadaf A M. 2002. Testing of IPM modules for the management of Helicoverpa armigera Hubner in chilli. M Sc (Agri) Thesis, University of Agricultural Sciences, Dharwad, Karnataka, India.
- Pandey S K, Mathur A C, Srivastava M. 2010. Management of leaf curl disease of chilli (Capsicum annuum L.). International Journal of Virology 6(4): 246-250.
- Pandurange G S, Vijayalakshmi K, Reddy K L. 2011. Evaluation of insecticides for managing of Bemisia tabaci and MYMV disease in mung bean. Annals of Plant Protection Sciences 19: 295-298.
- Parasar I, Deka N. 2013. Bhut Jolokia: A viable crop to mitigate the effect of climate change. Proceedings. Seminar on climate change and climate resilient agriculture. B N College of Agriculture.18th and 19th March, 2013. p. 143.
- Patil A S, Patil P D, Patil R S. 2002. Efficacy of different schedule doses of imidacloprid against sucking pest complex of chilli (Capsicum annuum L.). Pestology 26: 31-33.
- Pawar S A, Zanwar P R, Lokare S G, Dongarjal R P, Sonkamble M M. 2016. Efficacy of newer insecticides against sucking pests of okra. Indian Journal of Entomology 78(3): 257-259.
- Raju S G. 2010. Studies on chilli leaf curl complex disease. Ph D Thesis, University of Agricultural Sciences, Dharwad, Karnataka, India.
- Rodrigues E N L, Mendonca Jr M de S, Fritz L L, Heinrichs E A, Fiuza L. 2013. Effect of the insecticide lambda-cyhalothrin on rice spider populations in southern Brazil. Zoologia 30(6): 615-622.
- Sasikumar K, Kumar K. 2012. Effect of certain insecticides on spider population in sesame. Journal of Biopesticides 5(2): 135-139.
- Seal D R, Ciomperlik M, Richards M L, Klassen W. 2006. Comparative effectiveness of chemical insecticides against the chilli thrips, Scirtothrips dorsalis Hood (Thysanoptera: Thripidae), on pepper and their compatibility with natural enemies. Crop Protection 25: 949-955.
- Sechser B, Ayoub S, Monuir N. 2003. Selectivity of emamectin benzoate to predators of sucking pests on cotton. Journal of Plant Diseases and Protection 110(2): 184-194.
- Sherawat S M, Butt A, Tahir H M. 2015. Effects of pesticides on agrobiont spiders in laboratory and field. Pakistan Journal of Zoology 47(4): 1089-1095.
- Talukdar J, Saikia A K, Borah P. 2015. Survey and detection of the diseases of Bhut Jolokia (Capsicum chinense Jacq.) in Assam. Journal Crop and Weed 11: 186-192.
- Thangjam R, Borah R K, Saikia D K. 2017. Pest complex of king chilli, Capsicum chinense Jacquin in Assam, Northeast India. The Bioscan 12(4): 2069-2073.
- Varghese T N, Mathew T B. 2012. Evaluation of newer insecticides against chilli aphids and their effect on natural enemies. Pest Management in Horticultural Ecosystems 18(1): 114-117.