Regional Sericultural Research Station

Salem, Germany

Regional Sericultural Research Station

Salem, Germany
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Mohan A.,Kandaswami Kandars College | Ravikumar J.,Regional Sericultural Research Station | Senthilkumar D.,Kandaswami Kandars College
Journal of Entomological and Acarological Research | Year: 2017

Mulberry is a silkworm food plant (Bombyxmori. L) that is seriously affected by many insect pests. The incidence of Diaphania pulverulentalis (Hampson), Maconellicoccus hirsutus (Green), Paracoccus marginatus (Williams and Granara de Willink), Aleurodiscus dispersus (Russels) and Pseudodendrothrips mori (Niwa) and their natural enemies, viz. coccinellids and spiders (/100 plants), were observed through survey and surveillance for 3 months. In February 2013, the incidence of insect pests in Vaikkalpattarai and Reddipudur villages (India) was: D. pulverulentalis, 1.20 and 0.85%; P. marginatus, 6.80 and 33.10%; P. mori 42.98 and 45.50%, respectively. Further, the infestation of M. hirsutus (1.40%) and A. dispersus (59.72%) was also observed in February at Vaikkalpattarai. The population of coccinellids was high in December (1.02 and 0.84/100 plants), but the spider population was even higher in February and January (1.04 and 1.81/100 plants). Population of pests had a significant positive correlation with relative humidity. The population of coccinellids and spiders have positive correlation with temperature and mulberry pests infestation. The natural enemies observed in the study were mostly the ladybird beetles, Psyllobora bisoctonotata and unidentified species of spiders. © Copyright M. Arthanari et al., 2017.

Krishnamoorthy T.S.,Silkworm Seed Production Center | Radhakrishnan S.,Regional Sericultural Research Station
Indian Journal of Sericulture | Year: 2012

The study was conducted in Udumalpet and Krishnagiri areas in Tamil Nadu to measure the level of knowledge and adoption of new sericulture technologies and also to find out the extent of the association of the socio-economic characteristics of the small mulberry farm size holders in determining the level of knowledge and adoption. The knowledge and adoption level in Udumalpet was found to be higher when compared to the same in Krishnagiri as evident from the knowledge and adoption indices worked out. The knowledge and adoption indices in Udumalpet were to an extent of 88.5% and 77.2% and the same in Krishnagiri were to an extent of 72.0 % and 54.7% respectively. The variables scientific orientation, extension contact and extension participation in Udumalpet and in Krishnagiri cocoon yield, extension participation, mass media participation and social participation were found to have positive and significant relationship with the knowledge. In Udumalpet the variables such as dfls consumption, cocoon yield/acre/year, income, training scientific orientation, and mass media participation were found to have positively significant and experience was found to have highly significant relationship with adoption. In Krishnagiri cocoon yield/acre/year, extension participation, mass media participation and social participation were found to have positive and significant relationship with knowledge and training alone was found to have positive and significant relationship with the adoption. The main constraints faced by the sample fanners were lack of full awareness, high cost and non-availability of quality in-puts, labour intensiveness of the technology and uncertainty in crop success.

Singh S.,Regional Sericultural Research Station | Bhat M.M.,Regional Sericultural Research Station | Khan M.A.,Regional Sericultural Research Station
Pertanika Journal of Tropical Agricultural Science | Year: 2012

The mulberry silkworm, Bombyx mori L., is prone to infection of various pathogenic organisms. Microsporidiosis of the silkworm, caused by highly virulent parasitic microsporidian or Nosema bombycis (Nageli), is one of the most serious maladies, which determines the success or failure of sericulture industry in any country. Infections of the disease ranging from chronic to highly virulent can result in heavy loss to the sericulture industry. Several strains and species of microsporidia have since been isolated from the infected silkworms, and the disease is becoming increasingly more and more complex. Epizootiology, development of immunodiagnostic kit, fuorescent antibody technique and use of ideal disinfectant, chemotherapy and thermo-therapy techniques and management strategies have been addressed for identification, destruction, prevention and control of disease causing micro-organisms. Techniques of forced eclosion test and delayed mother moth examination have also been stated to play important roles in the detection of the disease. An attempt has also been made in this review article to briefy elucidate the various aspects of the pebrine disease and to help the researchers to develop effcient model(s) for the prevention, control and management of microsporidia infecting mulberry silkworm, Bombyx mori L. © Universiti Putra Malaysia Press.

Sakthivel N.,Research Extension Center | Balakrishna R.,Regional Sericultural Research Station | Qadri S.M.H.,Central Sericultural Research and Training Institute
Indian Silk | Year: 2011

Recent outbreak of papaya mealy bug Paracoccus marginatus Williams and Granara de Willink causing extensive damage in number of crops including mulberry in Tamil Nadu had drawn the attention of scientists to devise measures to overcome the menace and prevent tremendous crop losses. A simplified and user-friendly water jetting system has been developed for mulberry garden which is fertile and effective against papaya mealy bug as well as other sucking pests. Mulberry is normally irrigated at an interval of 7-10 days depending upon the soil condition. Additional provision of the PVC pipes is made to ensure the reach of the system across the mulberry garden, while one end of the main pipe line is connected to the outlet of irrigation system providing a gate valve opening to the irrigation channel, another set of PVC pipes are connected to each saddle with garden hose for jetting of water. Water jetting is harmless to the natural enemy complex system and is compatible with biological control program.

Sakthivel N.,Regional Sericultural Research Station | Balakrishna R.,Regional Sericultural Research Station | Ravikumar J.,Regional Sericultural Research Station | Samuthiravelu P.,Research Extension Center | And 2 more authors.
Journal of Biopesticides | Year: 2012

Efficacy of some promising botanicals and the synergists were compared to the commonly used chemical dichlorvos (76EC) against jassid Empoasca flavescens F. infesting mulberry as well as their biosafety to natural enemies. Among the botanicals, sole application of neem oil (3%), FORS (2%) and pongamia oil (3%) recorded 48.73, 46.88 and 42.49% reduction in jassid population respectively, whereas the NSKE (5%) exhibited least among all (33.59% at 1 DAS).The synergistic effect of neem oil and FORS recorded the best, 72.64% reduction followed by Pongamia oil + FORS (62.81%) and neem oil + pongamia oil (60.16%). Though dichlorvos was effective than all treatments (88.57% reduction) the chemical also eliminated more than 90% population of predatory coccinellids and spiders but the botanicals found relatively safer. Hence, the combination of neem oil (3%) with fish oil rosin soap (2%) could be used as an alternate to dichlorvos to manage jassid menace in mulberry as well as to conserve the natural enemies. © JBiopest.

Sakthivel N.,Research Extension Center | Balakrishna R.,Regional Sericultural Research Station | Qadri S.M.H.,Central Sericultural Research and Training Institute
Journal of Biopesticides | Year: 2011

Comparative efficacy of user friendly water jetting technique by diverting a portion of irrigation water through a garden hose and chemical measures [0.1 % dichlorvos (76EC) / 0.05% dimethoate (30 EC)] practised by farmers against the major sucking pests of mulberry was studied. Two treatments with water jetting at 15 and 25 days after pruning (DAP) of mulberry plants was more effective in control of papaya mealybug than all concurrent chemical measures viz. two sprays of dichlorvos, dichlorvos followed by dimethoate, dimethoate followed by dichlorvos and two sprays of dimethoate. Against spiralling whitefly and jassid water jetting exhibited at par results with two sprays of dimethoate and dimethoate followed by dichlorvos but superior to the rest of the chemical measures. But against thrips, it was recorded lower efficacy than two sprays of dimethoate and dimethoate followed by dichlorvos, at par with dichlorvos followed by dimethoate and better than two spray of dichlorvos. Water jetting in mulberry garden showed slight or no deleterious effect on predatory coccinellids and spiders whereas there was drastic reduction in their population on chemical measures. However, the additional treatment of water jetting a third time at 35 DAP supported to reduce the population of all sucking pests in a greater extent constantly till 45 DAP and the highest population of natural enemies in the water jetted plots also worked to keep the pest population reduced which resulted in higher leaf yield and economy than all chemical measures. © JBiopest. 270.

Bhatia N.K.,Regional Sericultural Research Station | Yousuf M.,Forest Research Institute
Annals of Forest Research | Year: 2013

With regard to forest management, rural livelihood, and poverty in India, it is often debated that JFM regime is not delivering livelihood functions of the forests to their dependents. This paper examines the state and scale of two decades old people-centric JFM system of India, and analyses the reasons with their indicators to shade offits shine in reducing poverty among forest dependent people in several parts of the country. Paper also discuss, how and to what extent, adoption of a multi-agency linked Collaborative Forest Management (CFM) system could be a better strategy over JFM regime to reassure delivery of livelihood functions of the forests to their dependents in rural India. Arguments in this communication are intended to provide forest managers and policy-makers with necessary input to consider some location specific forest based entrepreneurial activities in CFM mode to provide a continuous source of small income to forest dependent people to ensure long lasting success of their forest management endeavours. Paper concludes with a recommendation to convert unviable JFM areas of India into a multiagency linked CFM system in a phased manner.

Bindroo B.B.,Regional Sericultural Research Station
Indian Silk | Year: 2010

The indoor rearing of muga silkworm under controlled conditions exhibits good profits in certain economic characters with a marked reduction in the worm mortality. The technique implies the brushing of newly hatched muga worms on the leaves of the potted Som/Soalu plants or twigs in the polythene or polypaper bags kept indoors at the prevailing temperature and humidity regimes. The worms are then allowed to feed on the leaves across progressive growth stages. The replenishment of feed is carried at regular intervals after every consumption upto 3d stage of worms when ultimately they are shifted for feeding outdoors on the field plantations for progression of late age rearing with consequent mounting of ripened worms on Jails kept indoors to spin cocoons. The domestication of muga silkworms through more improvised indoor rearing practices needs due attention and exploration.

Sakthivel N.,Regional Sericultural Research Station | Qadri S.M.H.,Central Sericultural Research and Training Institute
Journal of Biopesticides | Year: 2010

A field experiment was conducted to study the impact of application of certain commonly used insecticides and botanicals in mulberry fields on the population built-up of predatory coccinellid beetles. The results revealed that the population of coccinellid beetles was drastically reduced 1 day after spray (DAS) in the plots treated with dichlorovos (88.63%), followed by phosalone (78.56%), dimethoate (72.19%) and metasystox (68.97%) whereas in the plots treated with pungam oil there was least reduction (29.72%) followed by neem oil (35.20%). The predators regained significant built up of their population at 5 DAS in plots treated with pungam oil and 10 DAS in the plots treated with neem oil, dichlorovos and phosalone whereas it continued to be at reduced levels (44.35%) in dimethoate followed by metasystox (32.61%) treated plots even at 10 DAS. © JBiopest.

Beevi N.D.,Regional Sericultural Research Station | Qadri S.M.H.,Central Sericultural Research and Training Institute
Journal of Biopesticides | Year: 2010

Mulberry (Morus indica L.), a commercially important crop, raised for its nutritious leaves required for production of most valued silkworm cocoons is currently encountering a serious problem due to rampant incidence ofroot rot disease caused mainly by species of Fusarium spp. resulting in excessive damage and reduction in acreage. The conventional chemical control measures are unable to provide total control. Hence, antagonistic microorganisms were evaluated individually and in combinations for their bio-control potential against Fusarium sp under sick plot condition. The combination of Trichoderma harzianum + T.viride + FYM (1:1:50) + Effective microorganisms (EM) as soil application at an interval of 30 days for three times recorded the highest degree of survival of the plant (72.00%) thus bringing down the disease incidence and further spread. The treatment was more effective, when the application of biocontrol agents were taken up at the initial stages of infection. © JBiopest.

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