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991.
Prof. Dr. Steyer 《Journal of pest science》1928,4(4):47-48
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992.
Prof. Dr E. R. Keller 《Potato Research》1971,14(4):317-324
Ohne Zusammenfassung 相似文献
993.
Prof. Dr. Wd. Eichler 《Journal of pest science》1949,22(12):190-190
Ohne Zusammenfassung 相似文献
994.
995.
K. Escherich Dr. H. Heßler J. D. Alfken Prof. Dr. F. Stellwaag 《Journal of pest science》1925,1(8):94-96
Ohne Zusammenfassung 相似文献
996.
Prof. Dr. Albert Boerger 《Journal of pest science》1952,25(12):183-186
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997.
Paulo Cezar Rezende Fontes Camila Borges Antonio Tufik Marialva Alvarenga Moreira André Malacarne Milanez 《Communications in Soil Science and Plant Analysis》2020,51(10):1357-1369
ABSTRACT Potato is one of the most economically important crops in Brazil. In this crop, potassium (K) is the most accumulated nutrient and has significant and positive effect on potato plant growth and tuber yield. Thus, the aim of this work was to determine the effects of K doses on nutrients accumulation, biometric, chlorophyll, and K indexes in potato plants grown. Two experiments were installed simultaneously in an unheated greenhouse with Agata cultivar. The experiment 1 was carried out in pot with commercial organic substrate with five K doses (0, 0.66, 1.32, 1.98, and 2.64 g dm3?1). The experiment 2, nominated hydroponic system, with washed sand above a layer of expanded clay pebbles where the plants received daily nutrient solution application. The treatments were five K doses (0.0, 2.5, 5.0, 7.5 e 10.0 mmol L?1). The biometrics data were collected 21 days after emergence and at harvest. Both experiments were set at a randomized block design with four replications. In both experiments, no visual symptoms of deficiency or excess were observed but only in plants at 0 mmol L?1 of K. In both experiments, K doses interacted with some biometric and chlorophyll indexes measured in the fourth completely expanded leaf with portable SPAD and Dualex devices, commonly used as a guide to in-season fertilizer N management, leading to recommend their use only in plants properly nourished in K. K critical concentration in the fourth fully expanded leaf was 61.7 g kg?1. 相似文献
998.
Bacterial diversity studied by next‐generation sequencing in a mature phototrophic Navicula sp‐based biofilm promoted into a shrimp culture system
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Luis Rafael Martínez‐Córdova Marcel Martínez‐Porchas Marco Antonio Porchas‐Cornejo Teresa Gollas‐Galván Susana Scheuren‐Acevedo Miguel Antonio Arvayo José Antonio López‐Elías Marco Antonio López‐Torres 《Aquaculture Research》2017,48(5):2047-2054
The bacterial diversity of a phototrophic biofilm used as nutrient‐recycler into a shrimp aquaculture system and as direct food‐source for shrimp was studied by next‐generation sequencing, considering the 16S rDNA and metagenomics sequence classification using exact alignments. Biofilm was promoted by the modification of cabon:nitrogen ratio and by the addition of the diatom Navicula sp. as promoter. Results revealed a wide diversity of bacteria thriving into the biofilm; most of the bacteria detected in the biofilm belonged to the Proteobacteria (47%), Chlamydiae/Verrucomicrobia (11%), Bacteriodetes (8%), Planctomycetes (5%) Phylum. Species involved in the decomposition of organic matter, nitrogenous‐ and sulfurous metabolites were detected; moreover, filamentous species known as biomass‐bulking enhancers and producers of adhesin‐like compounds were also detected. Surprising results were also obtained by detecting both, strictly anaerobic and aerobic bacteria involved into the metabolism of nitrogenous compounds. Other species not belonging to the marine environment were also detected, but their role is unclear. Finally, the detection of most of these species may constitute a first case report for a phototrophic biofilm. The results suggest an important role of bacteria in this type of biofilm and a complex microbial‐interaction network. 相似文献
999.
Julieta Sandra CUEVAS-ROMERO Jos Luis CERRITE
O-SNCHEZ Rocío LARA-ROMERO Marco Antonio VEGA-L
PEZ Carmen RAMÍREZ-ESTUDILLO Humberto RAMÍREZ-MENDOZA Mikael BERG Karin L
VGREN-BENGTSSON 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2022,84(12):1595
Porcine rubulavirus (PRV) is a contagious virus that affects the Mexican swine industry. This work aimed to evaluate the immunogenicity of an recombinant hemagglutinin neuraminidase-Porcine rubulavirus (rHN-PorPV) candidate vaccine on pregnant sows, and the protective efficacy afforded to their 7-day-old suckling piglets against PRV lethal challenge. Three sows were immunized with rHN-PorPV formulated with immune-stimulating complex (ISCOMs) and two sows with rHN-PorPV protein alone as well as a mock-immunized pregnant sow (negative control). Quantitative ELISA detected a high concentration of anti-rHN-PorPV Immunoglobulin G (IgG) antibodies in sow sera after the second dose of vaccine administered on day 14 until farrowing, showing viral-neutralizing and cross-neutralization activity against different variants of PRV. Sera samples from piglets of immunized sows (with or without adjuvant), showed high concentrations of IgG antibodies. As expected, piglets from the negative control sow (n=5), exhibited severe signs of disease and 100% of mortality after PRV challenge study. Conversely, 75% and 87.5% of the piglets born from the rHN-PorPV and the rHN-PorPV-ISCOMs-immunized sows (n=8), survived, respectively, showing milder PRV clinical signs. Our data indicate that rHN-PorPV candidate vaccine produced in Escherichia coli induces efficient humoral response in pregnant sows and that the maternally derived immunity provides high protection to suckling piglets against PRV lethal challenge. 相似文献
1000.