scholarly journals Phytotoxicity of phosphorus acid in Leucodendron Safari Goldstrike

2008 ◽  
Vol 61 ◽  
pp. 392-392
Author(s):  
S.G. Casonato ◽  
M.A. Manning ◽  
P.A. Rheinl?nder ◽  
R.A. Fullerton

The efficacy of phosphorous acid (FoliRFos) was tested for the control of Phytophthora cinnamomi in the cut flower Leucodendron Safari Goldstrike The fungicide was applied monthly in accordance with the prescribed label rate commencing in December 2005 During the winter months of 2006 phytotoxicity was observed in the treated plants The treatment was suspended for 2 months to avoid further damage after which time the foliar applications began again No plant deaths caused by P cinnamomi occurred in the treatments with the phosphorous acid whereas there was a 20 death rate in the untreated plots Growers should be aware of potential phytotoxicity from phosphorus acid on Leucodendron Safari Goldstrike as it can cause stunting of the plants and affect the quality of the blooms Application on Leucodendron Safari Goldstrike should be made with caution during winter months when plants are not actively growing Further work should be undertaken to determine whether using lower rates of the chemical during the winter months when the plants are apparently more susceptible to infection would result in less phytotoxicity

2018 ◽  
Vol 39 (6) ◽  
pp. 2325 ◽  
Author(s):  
Maria Yumbla-Orbes ◽  
José Geraldo Barbosa ◽  
Wagner Campos Otoni ◽  
Marcel Santos Montezano ◽  
José Antônio Saraiva Grossi ◽  
...  

Flowering induction and control is a limiting factor when commercially producing cut flowers of lisianthus and seed exposure to low temperatures, a physiological event called vernalization, induces the differentiation of vegetative buds to reproductive buds, contributing to a flowering that is uniform and has quality. The objective of this study was to evaluate the influence of seed vernalization in three cultivars of lisianthus (Excalibur, Echo and Mariachi) for 12, 24, 36 and 48 days at temperatures of 5, 10 and 15°C, in the production and quality of buds, making this technology feasible to large-scale production. During cultivation it was observed that the lower the temperature and higher the vernalization period, the lower the cycle and the greater the number of plants induced to flowering for all three cultivars, and those are important features in the context of flower production in a commercial scale. The seeds subjected to vernalization originated plants that produce flower stems within the standards required by the market, showing that vernalization was efficient to induce flowering without affecting the quality of the buds. To produce lisianthus as a cut flower of quality, it is recommended seed vernalization of Mariachi and Echo cultivars for 24 days at 5°C and Excalibur for 36 days at 5°C.


2016 ◽  
Vol 22 (2) ◽  
pp. 166
Author(s):  
Gláucia Moraes Dias ◽  
José Maria Monteiro Sigrist ◽  
Patricia Cia ◽  
Sylvio Luís Honório

Rosa sp. is the leading cut flower commercialized in Brazil and in the world; and to maintain stem quality it should be stored at 1 °C, however, there are still doubts about the storage of roses, especially whether the stems should be cold stored in water before marketing. In order to assess the feasibility of wet and dry storage, rose stems, ‘Avalanche’ were stored for 28 days in both conditions at 1 ± 2 °C / 95% RH. Weekly stems batches were transferred to 25 °C / 70% RH and kept in vessels containing tap water for postharvest assessment. It was observed that the decrease in the quality of the roses was inversely proportional to the storage time in both treatments. Although wet storage can occur for up to 21 days, when you need to store roses for a week or two, cold storage in dry condition is advised since it is more economical and viable for the producer.


2020 ◽  
Vol 24 ◽  
Author(s):  
Ismael Leonardo Vera-Puerto ◽  
Jorge Leonardo Olave-Vera ◽  
Sussy Tapia ◽  
Wladimir Antonio Chávez ◽  
Carlos Arias

The aim of this work is to evaluate the reuse of municipal wastewaters treated through subsurface constructed wetlands (SS-CWs) as irrigation water in cut flower aeroponic cultivation under arid conditions. For this purpose, two experimental aeroponic cultivation systems were installed with the cut flower Lilium ‘Tresor’ planted and irrigated with SS-CWs treated water. The results showed that the quality of the SS-CWs wastewater has to be improved to be used in irrigation. Despite that, Lilium ‘Tresor’ grew under arid conditions with normal stem diameters and number of flowers but with heights under 0.65 m, which would restrict their commercialization to local markets. Water electrical conductivity (> 2300 µs/cm) and luminosity (> 120 klux) were factors that affected plant height. When compared to other cultivation systems, the aeroponic cultivation system used between 10 % and 20 % of the amount of water needed to produce Lilium ‘Tresor.’ Thus, this work showed the feasibility to produce cut flowers using an aeroponic cultivation system under arid conditions and irrigated with SS-CWs effluents. Likewise, it was detected that improvements to water quality and luminosity must be made for industrial scaling.


2019 ◽  
Vol 6 (2) ◽  
pp. 38-41
Author(s):  
Reza Noviar ◽  
Jaenudin ◽  
Loura Weryco Latupeirissa

Based on preliminary studies conducted at Waled General Hospital the value of GDR and NDR has increased beyond the ideal standard set by the Ministry of Health, namely for GDR = ≤ 45 ‰ and for NDR = ≤ 25 ‰. The GDR in 2013 was 49.95 ‰, and in 2014 it was 61.10 ‰, while the NDR in 2013 was 19.71 ‰, and in 2014 it was 24.30 ‰. The results of the 2013 and 2014 calculations show the value of the GDR and NDR indicator numbers getting higher year after year. This type of research is a descriptive study. The method used is the observation method. The purpose of this study is to analyze the results of GDR and NDR calculations. Data collection procedures in this study by recording the results of monthly recapitulation of inpatient visits about GDR and NDR in 2013-2017. The population and sample in this study were GDR and NDR records from 2013 to 2017. The time of the study was conducted on 28 July 2018 in Waled County General Hospital. From the observations obtained the value of GDR and NDR in 2013-2017 tends to increase and decrease beyond the ideal limit that has been set. The lowest NDR was in 2013 with a value of 19.71 ‰, and the highest in 2015 with a value of 27.60 ‰. The lowest GDR was in 2013 with a value of 49.95 ‰, while the highest GDR was in 2016 with a value of 64.43 ‰. From the results of the study it is suggested that it is necessary to carry out medical audits and in-depth interventions regarding the improvement of GDR and NDR indicators and graph the GDR and NDR, so that they can always monitor the rise or fall of these indicator numbers, and for planning efforts to improve the quality of health services.


Author(s):  
Nita Arisanti ◽  
Trevino A Pakasi ◽  
Syarhan Syarhan

Covid-19  is  a  highly  contagious  disease  and  has  infected more than seven million people worldwide. Deaths due to this  disease  have  reached  418,000  deaths  in  June  2020.1 Based on data from the Indonesian Covid-19 Task Force, there were 172,053 cumulative cases with a death rate of 4.3% in Indonesia up to August 30, 2020.Indonesia  is  an  archipelago  country  which  has  different geographical  characteristics. Currently,  access  to  basic healthcare  and  quality  of  basic  health  services  has  not reached  all  regions,  especially  those  in  underdeveloped, remote  and  archipelago  areas. Health  problems  in  rural areas become a concern for Indonesian government. This is because around 43% of people live in rural areas or around 116  million  people.  Government  should pay  attention  to rural  health  problems  as  well  as  urban  health.  Likewise, during  the Covid-19  pandemic  rural  area  will  face  same problems to Covid-19. 


2005 ◽  
Vol 95 (10) ◽  
pp. 1237-1243 ◽  
Author(s):  
James J. Polashock ◽  
Jennifer Vaiciunas ◽  
Peter V. Oudemans

In New Jersey, Phytophthora cinnamomi is the pathogen most commonly isolated from diseased roots and runners of the cultivated cranberry (Vaccinium macrocarpon). A second distinct species of Phytophthora has been isolated from dying cranberry plants and surface irrigation water. This species is homothallic with paragynous antheridia and ellipsoid-limoniform, nonpapillate sporangia. It was tentatively identified as P. megasperma in an earlier report. Laboratory experiments demonstrate that the cardinal temperatures for vegetative growth are between 5 and 30°C with an optimum near 25°C. Sporangia are produced at temperatures between 10 and 20°C with the majority of sporangia produced at 10 and 15°C. In pathogenicity tests, no growth effect was observed on cranberry plants (cv. Early Black) when tests were conducted at 25°C; however, significant reductions in plant growth occurred when tests were conducted at 15°C. This species was insensitive to metalaxyl but was sensitive to buffered phosphorous acid. Sequence analysis of the internal transcribed spacer 1 (ITS1), 5.8S rDNA, and ITS2 regions place these isolates in Phytophthora clade 6 with greatest similarity to Phytophthora taxon raspberry. To our knowledge, this is the first report of isolates of this affiliation in North America. However, the observation of low temperature preferences makes this species unique in an otherwise high temperature clade. The isolates described in this study are tentatively classified as Phytophthora taxon cranberry.


2020 ◽  
Vol 77 (3) ◽  
pp. 527
Author(s):  
Afshan Rabnawaz ◽  
Riaz Ahmad ◽  
Muhammad Akbar Anjum

2014 ◽  
Vol 44 (5) ◽  
pp. 1262-1274 ◽  
Author(s):  
Izolde Bouloukaki ◽  
Katerina Giannadaki ◽  
Charalampos Mermigkis ◽  
Nikolaos Tzanakis ◽  
Eleni Mauroudi ◽  
...  

We aimed to compare the effect of intensiveversusstandard interventions on continuous positive airway pressure (CPAP) adherence 2 years after CPAP initiation, as well as on sleepiness, quality of life, depression, hospitalisation and death rate due to cardiovascular disease (CVD).3100 patients with newly diagnosed sleep apnoea were randomised into the standard group, with usual follow-up care, or the intensive group, with additional visits, telephone calls and education. Subjective daytime sleepiness (Epworth Sleepiness Scale; ESS), quality of life (36-item Short Form Health Survey; SF-36) and the patient’s level of depression (Beck Depression Inventory; BDI) were recorded before and 2 years after CPAP initiation, together with CVD hospitalisations and death rate.2 years after CPAP initiation, the intensive group used CPAP significantly more than the standard group (6.9versus5.2 h per night; p<0.001). ESS, SF-36 and BDI scores were also significantly better in the intensive group. Furthermore, the standard group had significantly more deaths and hospitalisations due to CVD.CPAP usage can be improved by both intensive and standard patient support. However, the patients who received intensive CPAP support had significantly better ESS, BDI and SF-36 scores, and lower cardiovascular morbidity and mortality, suggesting that an intensive programme could be worthwhile.


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