Quality of stored potatoes improved by chemical treatment

1978 ◽  
Vol 55 (3) ◽  
pp. 155-159 ◽  
Author(s):  
S. S. Leach
Keyword(s):  
Chemical Treatment

scholarly journals Physiological quality and economic evaluation of treated cowpea seeds stored in different packaging

2020 ◽  
Vol 9 (7) ◽  
pp. e686974625
Author(s):  
Erick Almeida Andrade ◽  
José Eldo Costa ◽  
Rosilene de Morais da Silva ◽  
Julian Junio de Jesus Lacerda ◽  
Bruno Ettore Pavan ◽  
...  
Keyword(s):  
Chemical Treatment ◽  
Storage Period ◽  
Dry Mass ◽  
Hypocotyl Length ◽  
Seed Moisture Content ◽  
Chemical Treatments ◽  
Pet Bottles ◽  
Cowpea Seeds ◽  
Physiological Quality

The objective of this work was to evaluate the physiological quality of cowpea seeds and the economic viability of storage in different types of packaging and with different chemical treatments. Seeds were submitted to one of the following chemical treatments of active ingredients: fipronil; fipronil + pyraclostrobin + thiophanate methyl; and fludioxonil + metalaxyl. Seeds without chemical treatment constituted the control. Seeds were placed in permeable cotton bags, permeable raffia bags, semipermeable kraft paper bags, and impermeable PET bottles. The following were evaluated: seed moisture content; germination test; first germination count; germination speed index; hypocotyl length; root length and hypocotyl dry mass and root dry mass. Cost analysis of treatments was also performed. The physiological quality of cowpea seeds was more markedly reduced under storage conditions in permeable packages with fludioxonil + metalaxyl treatment. Impermeable packaging without chemical treatment decreased deterioration of physiological quality in cowpea seeds and is economically viable for a storage period of up to 90 days.

scholarly journals Influence of abiotic factors on seed quality of maize hybrids in the process of its storage

2021 ◽  
Vol 5 (1) ◽  
pp. 30-37
Author(s):  
M. Ya. Kyrpa ◽  
Yu. S. Bazilieva ◽  
O. F. Stasiv
Keyword(s):  
Growth Rate ◽  
Moisture Content ◽  
Chemical Treatment ◽  
Seed Quality ◽  
Abiotic Factors ◽  
Seed Mass ◽  
Seed Storage ◽  
Maize Hybrids ◽  
Storage Methods

The research results of influence of various abiotic factors on seed quality of maize hybrids during long storage are given. The most effective of them are: temperature regime, seed moisture content and oxygen access. The storage methods (dry and cold, and controlled atmosphere storage) that have the greatest impact on the seed quality were established. It was found that the optimal moisture content of seed depends on the storage duration, if for 1–2 years – 10–11 %, 3 years and more – 7–8 %. In order to stabilize the moisture content, it is recommended to store the seeds in airtight containers, limiting the humidity access from the outside. During the long-term seed storage, particularly for the breeding purposes, the temperature range should advisably maintain within 8–10 °C in seed storage place. With that the laboratory germination of seeds increased by 3–5 %, field germination – by 6–8 %, growth rate by number of sprouts– by 5–9 % and by the weight of sprouts – by 2–5 g compared to the 18–20 °C temperature in a typical storage. Methods of pre-sowing improvement of seed quality were established – it is separation and chemical treatment (seed dressing). Separation is the sifting of the seed mass through sieves with round holes in order to divide from the smallest fraction, the content of which was 15–23 % depending on the seed uniformity of maize hybrids. It was found that in order to assess objectively the effectiveness of different chemicals and establish their suitability for presowing seed treatment, it is necessary to determine laboratory germination, especially the growth rate by the number of sprouts and weight of 100 sprouts. Premature chemical treatment of seed should be avoided. Key words: maize hybrids, storage methods, abiotic factors, seed quality, presowing treatment.

Chemical Treatment of a Potato Waste Effluent

1974 ◽  
Vol 9 (1) ◽  
pp. 172-187
Author(s):  
R. C. Landine ◽  
A. M. Ghauri
Keyword(s):  
Wastewater Treatment ◽  
Laboratory Investigation ◽  
Chemical Treatment ◽  
Wastewater Treatment Plants ◽  
High Chemical ◽  
Chemical Coagulation ◽  
Potato Waste ◽  
Plastic Media

Abstract Polishing of effluents from wastewater treatment plants is inevitable in order to prevent biological overloading of lakes and rivers. This paper concerns a laboratory investigation of chemical coagulation as a means of improving the effluent from a plastic media, biofiltration plant treating a potato wastewater. Several coagulants and coagulant-aids were tried. Coagulant dosages of 50 to 100 ppm were sufficient to produce satisfactory results when the quality of the raw effluent was good while 200 to 600 ppm of coagulants were needed in some instances. Sludge generation was studied and the sludge was found to be voluminous and sometimes floatation problems were experienced. Median efficiencies achieved were 48, 46, 56, 6 3 and 25% for the removal of BOD, COD, SS, P and N respectively. Therefore, moderate removals of pollutants were possible at moderate to high chemical dosages. The difficulty of successful chemical treatment of this non-highly-stabilized starch waste effluent was confirmed.

scholarly journals Chemical treatment and size of corn seed on physiological and sanitary quality during storage

2020 ◽  
Vol 42 ◽  
Author(s):  
Karen Marcelle de Jesus Silva ◽  
Renzo Garcia Von Pinho ◽  
Édila Vilela de Resende Von Pinho ◽  
Renato Mendes de Oliveira ◽  
Heloísa Oliveira dos Santos ◽  
...  
Keyword(s):  
Chemical Treatment ◽  
Seed Treatment ◽  
Standard Treatment ◽  
Accelerated Aging ◽  
Cold Test ◽  
Corn Seed ◽  
Pirimiphos Methyl ◽  
Physiological Quality ◽  
Effect Of Treatment

Abstract: The aim of this study was to investigate the effect of treatment with insecticides and fungicides on the physiological quality of corn seeds, classified in sizes, in different periods of storage. Seeds of the hybrid BM915 PRO, classified in two sizes (CH20/64 and CH24/64), were treated with a mixture of carbendazim + thiram (Derosal Plus®), pirimiphos methyl (Actellic®), deltamethrin (K-obiol®), and water (standard treatment). In addition to the standard treatment adopted by the company, treatments with clothianidin (Poncho®), thiamethoxam (Cruizer®), and fipronil (Shelter®) were added to the spray mixture. The seeds were stored in a non-climate-controlled environment in multi-ply paper packages. The physiological quality of the seeds was evaluated every ninety days over a period of 270 days by the germination test, cold test, and accelerated aging. Sanitary quality was also evaluated through the Blotter test. The physiological quality of seeds of the hybrid BM915 PRO is maintained up to ninety days of storage, regardless of the chemical treatment used and the size of the seeds. The addition of the insecticide to the standard treatment used in chemical seed treatment does not affect the action of the fungicides on the fungi in the seeds.

scholarly journals Assessment of the surface and structure of elements produced in additive manufacturing technology after chemical treatment

2021 ◽  
Vol 332 ◽  
pp. 01010
Author(s):  
Dawid Marciniak
Keyword(s):  
Additive Manufacturing ◽  
Chemical Treatment ◽  
Manufacturing Technology ◽  
Additive Manufacturing Technology ◽  
Vaporization Process ◽  
Geometrical Dimensions ◽  
Roughness Measurements

Samples made of ABS material were produced on devices from three different manufacturers: Stratasys, Velleman, 3Novatica. The quality of the printed surface was improved by vaporization with acetone vapours. Roughness measurements were performed, which proved the improvement of the surface after vaporization. The structure of the produced samples was also tested using a computer microtomography. It has been shown that excessive exposure to the solvent significantly changes the geometrical dimensions of models exposed to the vaporization process.

scholarly journals Possibility of treating Varroa acariasis (Varroa jacobsoni oud) with natural substances

2004 ◽  
Vol 58 (3-4) ◽  
pp. 359-368 ◽  
Author(s):  
N. Bacandritsos ◽  
E. Bourbos ◽  
Helena Anastassiadou
Keyword(s):  
Chemical Treatment ◽  
Varroa Jacobsoni ◽  
Eucalyptus Oil ◽  
Natural Substances ◽  
Different Doses

Bee acariasis, caused by the mite Varroa jacobsoni Oudemans [26], represents a serious problem for apiculture. It is caused primarily due to the application of synthetic chemical miticides, which under certain conditions may result in the parasitism of bees. They become vulnerable to chemical treatment, along with probable deterioration of the quality of honey produced. This assay examines the possibility of treating bee Varroasis with a mixture of thymol, menthol and ethereal oils of eucalyptus and citronella. This mixture, in different doses, was applied to experimental hives and to regular Langstroh hives by means of specially-prepared pieces of moss. The greatest efficacy (89.71-90.20%) was found in both hives when the mixture was used in a dosage of 15 grams of thymol to one gram of menthol, 3 ml eucalyptus oil and 1 ml citronella.

scholarly journals Chemical Treatment of CdTe and Solid Solution ZnxCd1-xTe and Cd0,2Hg0,8Te and Aqueous Solutions of HNO3–НІ-Lactate Acid

2016 ◽  
Vol 17 (2) ◽  
pp. 247-250
Author(s):  
E.E. Hvozdiyevskyy ◽  
Z.F. Tomashik ◽  
V.M. Tomashyk ◽  
R.O. Denysyuk
Keyword(s):  
Solid Solution ◽  
Organic Solvent ◽  
Aqueous Solutions ◽  
Solid Solutions ◽  
Chemical Treatment ◽  
Etching Rate ◽  
Semiconductor Materials ◽  
Kinetics Of Dissolution ◽  
Kinetics Of

The method of disk rotating kinetics of dissolution processes CdTe, ZnxCd1-xTe and Cd0,2Hg0,8Te in yodvydilyayuchyh etching compositions HNO3-NO-lactate acid. The dependence of etching rate of said material concentration oxidizer and organic solvent. Optimized polishing compositions herbalists and modes chemical dynamic polishing of semiconductor materials studied. The influence of Zn and Hg content in the composition of solid solutions on the quality of the resulting surface etching mixtures.

scholarly journals Late harvest and chemical treatment of cowpea seeds

2021 ◽  
Vol 17 (1) ◽  
pp. 25-35
Author(s):  
Mariana Zampar Toledo ◽  
Daniel Junior Bilck ◽  
Cleiton Banhara Machado
Keyword(s):  
Seed Coat ◽  
Chemical Treatment ◽  
Seed Quality ◽  
Fungicide Treatment ◽  
Cowpea Seeds ◽  
Seed Moisture ◽  
Seedling Length ◽  
Physiological Quality ◽  
Physiological Tests

Reduced quality ofcowpea due to late harvest and therefore pathogen incidence may influence the results of the germination test, whenever losses are associated with the agentsadhered to seed coat;in that context, chemical treatmentof seeds during the evaluations may reflect more accurately physiological quality of the samples, which in turn may assurethe emergence results of healthy seedlings and establishment of appropriate plant populations inthe field. This study had the objective ofevaluating the effects of fungicide treatment on minimizing physiological quality losses of cowpea seedsdue to lateharvestin germination and seedling development tests. The experimental design was the completely randomized with four replications. Treatments consisted of cowpea, cultivar BRS Guariba, harvested at different times (0, 3, 6, 9, 12 and 15 days after physiological maturity)andtreated or not with fungicide carboxim+thiramfor seed quality tests. Seeds were initially characterized by seed moisture and mass. Afterwards, sampleswere evaluated by tests ofgermination percentage, germination first count, seedling length and dry matter. Data was submitted to variance analysisand means were analyzed as a 2x6 factorial. Means from chemical treatment and harvest times were compared by the Tukey test and regression analysis (p≤0.05), respectively, with subsequent unfolding of any significant interactions. Delayed harvest of cowpea seeds sharply reduces germination and vigor; fungicide treatment before performing physiological tests enables to establish thatseed quality losses can bein part caused by pathogen vehiculationonthe seed coat.

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