| low rate of japanese encephalitis infection in rural children in thanjavur district (tamil nadu), an area with extensive paddy cultivation. | in thanjavur district, the occurrence of japanese encephalitis (je) is very low and the district is free of epidemics. among children aged 5-12 yr, the infection rates for je in two consecutive transmission seasons of 1991-92 and 1992-93, were 1.8 and 5.1 per cent respectively. a high cattle to pigs ratio (400:1) could possibly be an important factor for the low je infection rate in children in the district. | 2000 | 10969489 |
| household food security in urban tamil nadu: a survey in vellore. | food security has been a matter of concern in recent years due to the global food crisis and rising food prices. we aimed to study the level of food security in a densely populated urban area in southern india. | 2010 | 21250582 |
| detection of aspergillus spp. and aflatoxin b1 in rice in india. | twelve hundred rice samples consisting of paddy (675) and milled rice (525) were collected from 20 states across india. these samples were assessed for aspergillus spp. infection on selective medium and aflatoxin b(1) (afb1) by indirect competitive elisa. in this investigation, aspergillus flavus contamination dominated in all the seed samples. the other major contaminants were aspergillus niger, aspergillus ochraceus and aspergillus parasiticus. out of 1200 rice samples, 67.8% showed afb1 rangi ... | 2009 | 19028301 |
| management of mine spoil for crop productivity with lignite fly ash and biological amendments. | long-term field trials using lignite fly ash (lfa) were carried out in rice crops during the period 1996-2000 at mine i, neyveli lignite corporation, tamil nadu. lfa, being alkaline and endowed with an excellent pozzolanic nature, silt loam texture, and plant nutrients, has the potential to improve the texture, fertility, and crop productivity of mine spoil. the rice crops were the first, third, fifth, and sixth crops in rotation. the other crops, such as green gram (second) and sun hemp (fourth ... | 2006 | 16256262 |
| leptospirosis among rice mill workers of salem, south india. | leptospirosis is not commonly reported from the salem district in central tamil nadu in india. in october 2000, a rice mill worker, who had fever and jaundice, tested positive in leptospiral igm enzyme-linked immunosorbent assay (elisa). microbiological and serological investigations were performed on the patient, a sample population of the rice mill workers, and the animal and rodent populations living in the same premises. leptospira was isolated from the patient about 2 weeks after the onset ... | 2002 | 12501258 |
| diversity of azospirillum strains isolated from rice plants grown in saline and nonsaline sites of coastal agricultural ecosystem. | the diversity of indigenous azospirillum spp. associated with rice cultivated along the coastline of tamil nadu was analyzed. twelve sites with varying soil characteristics such as salinity, texture, and the host variety were chosen. of the 402 strains isolated using nfb media, 302 were confirmed to be azospirillum spp. and subjected to dna polymorphism analysis using pcr-rflp of 16s rdna. they were also screened for their salt tolerance and microaerobic n2-fixing-dependent growth. on species id ... | 2002 | 12209252 |
| population dynamics of mosquito immatures and the succession in abundance of aquatic insects in rice fields in madurai, south india. | studies on the breeding pattern of mosquito immatures and the successional changes in the abundance of aquatic insects were conducted in rice fields near madurai, south india. the population of late (iii/iv) larval instars of culicines peaked on day 28 and pupae (culex tritaeniorhynchus, cx. pseudovishnui and cx. vishnui) peaked on day 9 after transplantation, whereas the population of late (iii/iv) larval instars of anophelines peaked on day 19 and pupae of anopheles subpictus and an. vagus on ... | 1999 | 11304916 |
| plant diseases in india and their control. | the concept of development is reviewed in terms of sustainability. food production in india driven by pressure from an increasing human population uses 90,000 t per year of technical-grade pesticide: 12% of this is fungicide and a good part is insecticide for the control of vectors of plant viruses. a change in the cropping pattern and irrigation have provided a summer 'green bridge' along tamil nadu/andhra pradesh border areas for the tungro virus that affects rice and its vector. epidemics occ ... | 1993 | 8149823 |
| composite fish culture for mosquito control in rice fields in southern india. | composite culture of edible fishes (common carp, cryprinus carpio; silver carp, hypopthalmithys molitrix, grass carp, ctenopharyngodon idella; catla, catla catla; rohu, labeo rohita; and mrigal, cirrhinus mrigala) in rice fields in the cauvery delta of tamil nadu, southern india, resulted in 81.0% reduction in the immature mosquito population of anophelines and 83.5% of culicines. analysis of fish feces for mosquito larval head capsules showed that common carp and silver carp are effective larvi ... | 1994 | 7777919 |
| evaluation of the water fern azolla microphylla for mosquito population management in the rice-land agro-ecosystem of south india. | the floating water fern azolla microphylla kaulfess was evaluated as a biocontrol agent against mosquitoes breeding in rice fields in tamil nadu, south india. anopheles subpictus grassi, culex pseudovishnui colless and culex tritaeniorhynchus giles were the predominant species of mosquitoes, with peak densities of late instar larvae and pupae occurring during the second week after transplantation of rice seedlings of short-term (c. 80 days from transplantation to harvest) or medium-term (c. 95 d ... | 1991 | 1768923 |
| effects of organic and inorganic fertilisers on mosquito populations in rice fields of southern india. | the effects of nitrogenous (inorganic) fertilisers, organic manures and blue-green algae (bga) biofertiliser on mosquito populations (diptera: culicidae) were studied in rice fields of madurai, tamil nadu, south india, with particular attention to culex vishnui theobald, cx. pseudovishnui colless and cx. tritaeniorhynchus giles, the vectors of japanese encephalitis (je). the application of urea, a nitrogenous fertiliser, in rice fields significantly increased the grain yield and the population d ... | 2000 | 11129699 |