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Sikdar A Chakraborty GC Bhattacharya D Bakshi S Basak DK Chatterjee A Halder SK 《Tropical animal health and production》2000,32(3):165-171
Gangrenous syndrome/Degnala disease was recorded in a large number of buffaloes and cattle in Murshidabad district of West Bengal, India. Fusarium spp. had been isolated from the mouldy paddy straw which were fed to the animals. There was a reduction in the incidence of the disease following withdrawal of the mouldy paddy straw. Histopathological examination showed necrosis and loss of architectural details in the skin. 相似文献
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In India, mangroves occupy 6740 km2 of which the Mahanadi delta andBhitarkanika mangrove forests of Orissa cover 191.44 km2, most of whichhas been severely overexploited. World wide concern to conserve mangrovesnecessitated propagation of mangroves to re-establish them on barren andswampy land along tidal creeks around Paradeep port of Orissa. Avicenniaofficinalis, Aegiceras corniculatum, Bruguiera parviflora, B. sexangula,Ceriops decandra, Excoecaria agallocha, Heritiera fomes, Kandelia candel,Rhizophora mucronata, Sonneratia apetala were vegetatively propagated andplanted over 10 ha of degraded salt-marshy wetlands of Mahanadi delta inpure and mixed stands depending on the intensity and the frequency of tidalinundation at the experimental site. Survival was significantly higher(80%) in S. apetala followed by A. officinalis, R. mucronata, K.candel and H. fomes (70–75%). S. apetala recorded the maximumgrowth in height (3.0 m after 2 years) whereas C. decandra showed theminimum growth (0.5 m). Growth performance was better with plants in mixedstands than the plantation with single species. This gives us hope topropagate and re-establish mangroves for conservation in scientificallymanaged plantations in a physiologically arid environment. 相似文献
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Sakurai Y Itou M Barbiellini B Mijnarends PE Markiewicz RS Kaprzyk S Gillet JM Wakimoto S Fujita M Basak S Wang YJ Al-Sawai W Lin H Bansil A Yamada K 《Science (New York, N.Y.)》2011,332(6030):698-702
The high-temperature superconducting cuprate La(2-x)Sr(x)CuO(4) (LSCO) shows several phases ranging from antiferromagnetic insulator to metal with increasing hole doping. To understand how the nature of the hole state evolves with doping, we have carried out high-resolution Compton scattering measurements at room temperature together with first-principles electronic structure computations on a series of LSCO single crystals in which the hole doping level varies from the underdoped (UD) to the overdoped (OD) regime. Holes in the UD system are found to primarily populate the O 2p(x)/p(y) orbitals. In contrast, the character of holes in the OD system is very different in that these holes mostly enter Cu d orbitals. High-resolution Compton scattering provides a bulk-sensitive method for imaging the orbital character of dopants in complex materials. 相似文献
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Unver A Rikihisa Y Borku K Ozkanlar Y Hanedan B 《Berliner und Münchener tier?rztliche Wochenschrift》2005,118(7-8):300-304
Seroprevalence of Ehrlichia canis antibodies among dogs in Turkey were previously reported, however, the ehrlichial organism has never been characterized in this region. The current study examined dogs from Ankara with febrile illness for E. canis infection with E. canis-specific PCR. Three of the 12 blood specimens from dogs showing clinical signs compatible with canine ehrlichiosis were found to be positive by PCR using E. canis-specific primers. E. canis detected in one of the blood specimens was designated as Kutahya strain. The representative E. canis strain was characterized by 16S rRNA gene sequencing and Western blot analysis of the plasma sample from the dog infected with E. canis. The 16S rRNA sequence (1,388 bp) of the E. canis Kutahya was identical to that of Ehrlichia ovina from a sheep in Turkey and Venezuelan Dog Ehrlichia (VDE) and was closely related (99.9%) to that of type strain of E. canis, Oklahoma. The plasma of the dog infected with E. canis Kutahya was analyzed by Western blotting using the purified E. canis Oklahoma strain as antigen. The reactive antibody profiles of the dog infected with E. canis Kutahya was found to be similar to those of dogs infected with E. canis Oklahoma and VDE, suggesting the antigenic similarities among these strains. The findings in this study would help for a better understanding of epidemiology of canine ehrlichiosis. This is the first report of molecular detection and characterization of an ehrlichial agent in Turkey. 相似文献
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Hakan Basak K. Mesut Çimrin Metin Turan Ekrem Ozlu 《Communications in Soil Science and Plant Analysis》2019,50(3):350-361
Mycorrhiza has attracted interest as one of the microorganisms that increase a crop’s salt stress tolerance. This study was conducted to determine the impacts of mycorrhiza inoculation and applying salt at different ratios on the yield of peppers and amino acid concentrations. The study was conducted in greenhouse conditions on loamy soils with four salt treatments, two mycorrhiza inoculations and a control in a complete randomized block design. The present study indicated that salt treatment alone was significantly correlated with crop stem and root amino acid concentrations, RWC% and leaf sizes, whereas applying mycorrhiza showed a positive relationship to stem height, stem and root wet weight, and root amino acids but led to a decloine in root serine and glutamine, and stem amino acid and glutamine. In conclusion, inoculating with mycorrhiza was observed to make a positive contribution to salt stress tolerance at different levels in almost all the parameters examined. 相似文献
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Tarik Mitran Pabitra Kumar Mani Nirmalendu Basak Debasis Mazumder Manabendra Roy 《Archives of Agronomy and Soil Science》2016,62(1):1-18
A study on the rice–wheat cropping system was conducted at Bidhan Chandra Krishi Viswavidyalaya, West Bengal, India, to assess the effects of long-term manuring and fertilization on transformation of the inorganic phosphorus (P) fraction in soil after 22 years of the crop cycle. Soil samples were collected after Kharif from seven treated plots having different types of organic amendments like farm yard manure, paddy straw and green manuring with 50% substitution of nitrogen levels in rice crop only. The result showed that the yield trend of rice was maintained due to the buildup of P from various organic inputs. Although cultivation for 22 years without adding any fertilizer caused a significant decrease in almost all the forms of P viz. avail-P, saloid P, iron phosphorus fraction (Fe–P), aluminum phosphorus fraction (Al–P), calcium phosphorus fraction (Ca–P) and total P in control. Partial substitution of inorganic fertilizer N (50%) with organics, however, caused a significant increase in almost all the P fractions in soil over the control. The relative abundance of all the fractions of inorganic P irrespective of treatments was as follows: Fe–P > reductant soluble P fraction > occluded P > Al–P > Ca–P > saloid P. Saloid and Fe–P were the dominating fractions responsible for 92% variation of available P and total P levels, respectively. 相似文献
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B. B. Basak 《Archives of Agronomy and Soil Science》2013,59(11):1599-1609
ABSTRACTThe chemical reactivity of Indian rock phosphates (RPs) was measured by five chemical extraction methods (i.e. water, neutral ammonium citrate (NCA), 2% citric acid (CA), 2% formic acid (FA) and absolute citrate solubility (ACS)). These measurements were assessed by agronomic response data obtained by growing ryegrass and palmarosa in two highly weathered acidic soils under pot culture experiment. The phosphorus (P) solubility value of RP measured by different methods followed the order: ACS > 2% CA > 2% FA > NAC > water. Considering triple superphosphate (TSP) as a standard reference P fertilizer, the agronomic response of RPs followed the order Udaipur RP > Jhabua RP ≥ Purulia RP > Mussorie RP. Methods based on citrate solubility (i.e. NAC, 2% CA and ACS) were significantly and positively correlated with agronomic response irrespective of the plant species and soil types. The best correlation value obtained with NCA indicated that P solubility in NAC solution may offer better prediction of agronomic effectiveness of RP in terms of biomass yield, relative agronomic efficiency (RAE) and P recovery efficiency. So, the present investigation will help to predict the agronomic effectiveness of low-grade RP based on chemical methods. 相似文献
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