Allelopathic activity of smooth brome seeds with oil crops

2021 ◽  
pp. 4-4
Author(s):  
И.В. Епифанова
Keyword(s):  
White Mustard ◽  
Smooth Brome ◽  
Oil Crops ◽  
Federal Research ◽  
Seedling Length ◽  
Germination Ability ◽  
Negative Effect ◽  
In The Beginning ◽  
First Time ◽  
Positive Effect

Опыты проводили в двух закладках в 2019–2020 годах на базе обособленного подразделения ФГБНУ «Федеральный научный центр лубяных культур» в Пензенской области. Новизна исследований заключается в том, что впервые изучалось аллелопатическое взаимодействие растений костреца безостого с широким набором масличных культур. Цель работы — изучить аллелопатический эффект в начальные этапы онтогенеза растений. В задачи исследования входило выделение культур с положительным и негативным воздействием на рост и развитие проростков костреца безостого. Объектами исследований служили кострец безостый Пензенский 1, сафлор красильный Александрит, горчица сарептская Люкс, рапс яровой Таврион, конопля Надежда, сурепица яровая Искра, горчица белая Люция, крамбе абиссинская Полёт, гвизоция абиссинская Медея, редька масличная Фиолина, нигелла дамасская Ялита, гибрид подсолнечника P63 LE 10 (XF 3020), озимый рыжик Барон, яровой рыжик Велес, лён масличный Исток. Оценка аллелопатической активности проведена с использованием метода, который предусматривает проращивание семян растений с последующим вычислением процента всхожести. На начальных этапах онтогенеза негативное аллелопатическое воздействие на количество полноценных всходов костреца безостого Пензенский 1 оказывали конопля Надежда (–4,5% к контролю) и сурепица яровая Искра (–12,6% к контролю). Положительное влияние на прорастание и развитие проростков костреца оказывали сафлор красильный Александрит (+8,8% к контролю) и лён масличный Исток (+7,5 % к контролю). Длина проростков костреца достоверно была выше в варианте с льном масличным Исток — 6,19 см (+0,77 см к контролю). Существенное снижение наблюдалось в вариантах с горчицей сарептской, нигеллой дамасской, горчицей белой, рыжиком озимым, подсолнечником, рапсом яровым, рыжиком яровым, сурепицей яровой и коноплёй — от 4,37 до 2,66 см (от –1,05 до –2,76 см). The investigation was carried out in 2019–2020 at the Federal Research Center of Fiber Crops in the Penza region. For the first time allelopathy of wide number of oil crops was analyzed when growing with smooth brome. The aim was to evaluate the effect of allelopathy at early plant ontogenesis and determine plants having beneficial or detrimental effects on smooth brome seedlings. The objects of the study were smooth brome “Penzenskiy 1”, safflower “Aleksandrit”, brown mustard “Lyuks”, spring rapeseed “Tavrion”, hemp “Nadezhda”, spring cress “Iskra”, white mustard “Lyutsiya”, Abyssinian mustard “Polet”, noog “Medeya”, oil radish “Fiolina”, ragged lady “Yalita”, sunflower hybrid P63 LE 10 (XF 3020), winter camelina “Baron”, gold-of-pleasure “Veles”, flax “Istok”. To determine positive or negative effect the germination ability was tested. Hemp and spring crees negatively affected smooth brome in the beginning of its ontogenesis (–4.5 and –12.6%, respectively). Safflower and flax had positive effect on smooth brome (+8.8 and +7.5 %, respectively). The length of smooth brome seedlings was significantly higher when seeding with flax — 6.19 cm (+0.77 cm). Brown mustard, ragged lady, white mustard, winter camelina, sunflower, spring rapeseed, gold-of-pleasure, spring cress and hemp significantly reduced seedling length — from 4.37 to 2.66 cm (from –1.05 to –2.76 cm).

scholarly journals Allelopathic activiti of eastern galega seeds with oil crops

2022 ◽  
Vol 354 (11-12) ◽  
pp. 100-103
Author(s):  
I. V. Epifanova
Keyword(s):  
Negative Impact ◽  
Allelopathic Effect ◽  
White Mustard ◽  
Plant Seeds ◽  
Oil Crops ◽  
Federal Research ◽  
Wide Range ◽  
First Time ◽  
Spring Rape ◽  
Niger Seed

Relevanсe. The novelty of our research lies in the fact that for the first time the allelopathic interaction of eastern galega seeds with a wide range of oilseeds is being studied. The aim of this work is to study the allelopathic effect in the initial stages of plant ontogenesis. The objectives of the study were to identify cultures with a positive and negative impact on the growth and development of sprouts of eastern galega. The objects of research were eastern galega Magister, false saffron Alexandrite, saperda mustard Lux, spring rape Tavrion, hemp Nadezhda, spring cress Iskra, white mustard Lucia, abyssinian colewort Polet, ethiopian niger seed Medea, oil radish Fiolina, damascene fennelflower Yalita, hybrid sunflower P63 LE 10 (XF 3020), winter camelina Baron, spring camelina Velez, oilseed flax Istok. The experiments were carried out in two layouts in 2019–2020 on the basis of a separate division of the Federal research center for fiber crops in the Penza region.Methods. The evaluation of allelopathic activity was carried out using a method that involves the germination of plant seeds, followed by the calculation of the percentage of germination. The number of seeds and seedlings at different stages of ontogenesis was determined along with measuring the length of the root, stem and leaf.Results. At the initial stages of ontogenesis, a weak negative allelopathic effect on the eastern galega is exerted by the abyssinian colewort Polet — the number of fullfledged seedlings was -6,1% to the control. A positive effect on the germination and development of galega seedlings is exerted by damascene fennelflower Yalita (+8,3% to control), ethiopian niger seed Medea (+8,1 to control), oilseed flax Istok (+6,4% to control). In general, the length of the galega seedling was at the level of control with damascene fennelflower and ethiopian niger seed is 3,27 and 3,24 cm (-0,40 and 0,43 cm respectively). A significant decrease is observed in the variants with oilseed flax, spring camelina, winter camelina, spring rape, false saffron, sunflower, saperda mustard, white mustard, hemp, abyssinian colewort and spring cress — from 2,81 to 1,66 cm (-0,86–2,01 cm to control).

scholarly journals The Effects of Corporate Bonds on Employment: Early Evidence from Greece

2020 ◽  
Vol 12 (2) ◽  
pp. 235-253
Author(s):  
Sotirios Karagiannis ◽  
Dimitrios Thomakos
Keyword(s):  
Corporate Bonds ◽  
Banking System ◽  
External Financing ◽  
Listed Firms ◽  
Negative Effect ◽  
The Impact ◽  
First Time ◽  
Investment Choices ◽  
Positive Effect

This study investigates the impact of corporate bonds issued by Greek listed firms on employment. Even though external financing and the effects on employment has been studied in the literature, we extend the existing literature by focusing for the first time on the specific role of corporate bonds on employment. We have collected all the relevant papers on this line of the literature and concisely report them in a table format and then use them in analyzing our results. Our empirical analysis is based on a panel dataset from 2001 to 2014 and we examine the effect of corporate bonds in the pre and post period of the Greek economic crisis, in which the banking system is vulnerable and unable to provide financing to the firms. The results suggest that corporate bonds have a positive effect on employment in the pre-crisis sample, denoting that firms hire employees and proceed to investment choices. On the contrary, during the recession, corporate bonds have a negative effect on employment. Firms reduce their costs and try to control their debt obligations by issuing corporate bonds.

scholarly journals Akad Wakâlah dan Samsarah sebagai Solusi atas Klaim Keharaman Dropship dalam Jual Beli Online

2016 ◽  
Vol 9 (2) ◽  
pp. 323
Author(s):  
Ika Yunia Fauzia
Keyword(s):  
Positive Influence ◽  
Female Entrepreneurs ◽  
The Past ◽  
New Business ◽  
Negative Effect ◽  
Online Business ◽  
In The Beginning ◽  
Positive Effect

<p>Online business (selling-buying) has become prominent in the past few years ago as demand increases. This kind of business forms a positive effect of the development of internet which produces new business-men. Along with the development of online business, there emerges dropship system which is mostly undertaken by female entrepreneurs. Despite its negative effect, dropship system has positive influence, i.e. creating positive activities for women and therefore empowering them. The polemics of dropship is still going on. According to some Muslim jurists, dropship is forbidden (<em>harâm</em>) because the practicioners of this system sell items only from picture. Moreover, the items sold have not been the property of the practicioners. This article deals with the benefit of <em>wakâlah</em> and <em>samsarah</em> contract used to accommodate the dropship system. The specification of both contracts is explained in detail in order for this system to be undertaken as wakalah and samsarah contract. The practicioners of dropship as <em>wâkil</em>, and suppliers as <em>muwakkil</em>, or the practicioners of dropship as <em>simsâr</em> with some conditions that should be accorded to the contract in the beginning of transaction.</p>

Productivity and Level of Weed Infestation of Legume Meadow Grasses Depending On Grass Species and Fertilization

2016 ◽  
Vol 5 (08) ◽  
pp. 4739
Author(s):  
Boryana Churkova ◽  
Tatyana Bozhanska*
Keyword(s):  
Dry Matter ◽  
Red Clover ◽  
Meteorological Conditions ◽  
Grass Species ◽  
Stem Height ◽  
Negative Effect ◽  
Weed Infestation ◽  
Favorable Influence ◽  
In The Beginning ◽  
Positive Effect

The experiment was conducted in the period of 2013-2015 in the experimental field of RIMSA-Troyan. The influence of bio-fertilizers, such as boron humate and molybdenum humate at doses of 1600 ml/ha, was studied.  They were applied in the beginning of bud-formation period on legumes, such as bird's-foot-trefoil, sainfoin, and red clover. The highest positive effect of studied bio-fertilizers over productivity was found in the treatment of grassland of sainfoin. Its yield increased, after the application of boron humate, in comparison with the control by 8.3%, and molybdenum humate increased the productivity of red clover by 4.0%. Both bio-fertilizers showed a negative effect in relation to dry matter yield of bird's-foot trefoil. Foliar treatment with boron and molybdenum humate of bird's-foot-trefoil, red clover and sainfoin decreased the level of weed infestation of crops and had an influence over the biological characteristics of grass species and meteorological conditions. As a result of the influence of bio-fertilizers, the stem height of sainfoin and red clover increased, which had a favorable influence over productivity of their grasslands.   

scholarly journals The effect of different macromineral intakes on mineral metabolism of sport horses

2012 ◽  
Vol 81 (2) ◽  
pp. 113-117 ◽  
Author(s):  
Branislav Gálik ◽  
Daniel Bíro ◽  
Marko Halo ◽  
Miroslav Juráček ◽  
Milan Šimko ◽  
...  
Keyword(s):  
Blood Serum ◽  
Mineral Metabolism ◽  
Reference Intervals ◽  
Blood Collection ◽  
Blood Profile ◽  
Mineral Profile ◽  
Negative Effect ◽  
First Time ◽  
Positive Effect

The aim of the study was to analyze the effect of different intakes of macroelements from feed on the mineral blood profile of sport horses. In the experiment which lasted for 12 months (6 months for each of the two periods), 14 sport horses with 2 types of feed rations were monitored. The blood was collected at the beginning of the experiment and every 2 months (three blood collections for each period). Feed rations had a negative effect on Ca (3.40 mmol·l-1 and 3.32 mmol·l-1) and K (3.2 mmol·l-1 and 2.98 mmol·l-1) concentrations in equine serum obtained from the second and third blood collection, respectively. Concentration of P (1.28 mmol·l-1 and 1.20 mmol·l-1) in equine serum obtained from the second and third blood collection, respectively, was higher (P < 0.05) compared to the first blood collection. Concentrations of Mg and Na were in reference intervals. In the 2nd period of experiment, feed rations were adjusted based on individual requirements of the monitored horses; the proportion of the mineral ingredient in the feed rations was lowered. More balanced concentrations of Ca, Mg, Na and K were detected in equine blood serum as a result of lower intake of the minerals from feed; the concentration of P was, except for one case, higher than in the 1st period. We observed a positive effect of individual ration compositions based on the results of blood mineral profile. The study describes for the first time the effect of a high and adequate long-term intake of macroelements on their concentrations in sport horses’ blood serum.

Working Memory, Mental Prospection, Time Orientation, and Cognitive Insight

2013 ◽  
Vol 34 (3) ◽  
pp. 159-169 ◽  
Author(s):  
Sevtap Cinan ◽  
Aslı Doğan
Keyword(s):  
Working Memory ◽  
Structural Equation ◽  
Factor Model ◽  
Time Orientation ◽  
Equation Modeling ◽  
Cognitive Insight ◽  
Confirmatory Factor ◽  
Negative Effect ◽  
Positive Effect ◽  
Three Factor

This research is new in its attempt to take future time orientation, morningness orientation, and prospective memory as measures of mental prospection, and to examine a three-factor model that assumes working memory, mental prospection, and cognitive insight are independent but related higher-order cognitive constructs by using confirmatory factor analysis (CFA). The three-factor model produced a good fit to the data. An alternative one-factor model was tested and rejected. The results suggest that working memory and cognitive insight are distinguishable, related constructs, and that both are distinct from, but negatively associated with, mental prospection. In addition, structural equation modeling (SEM) showed that working memory had a strong positive effect on cognitive insight and a moderate negative effect on mental prospection.

Estimasi Pengaruh Faktor Internal Bank dan Stabilitas Makroekonomi terhadap Profitabilitas dengan Mediasi Rasio Pembiayaan Bermasalah di PT Bank Muamalat Indonesia

2020 ◽  
Vol 3 (2) ◽  
pp. 93-108
Author(s):  
Annisa Siti Fathonah ◽  
Dadang Hermawan
Keyword(s):  
Secondary Data ◽  
Financial Statements ◽  
Significant Positive Effect ◽  
Return On Assets ◽  
Internal Factors ◽  
Macroeconomic Factors ◽  
Operating Income ◽  
Significant Negative Effect ◽  
Negative Effect ◽  
Positive Effect

This study aims to determine and analyze how much influence the bank's internal factors such as Equity, Operational Costs per Operating Income (BOPO), Financing Deposit to Ratio (FDR), Non Performing Financing (NPF) as a mediator and external or macroeconomic factors namely inflation and Gross Domestic Product (GDP) on profitability represented by Return on Assets (ROA) at Bank Muamalat Indonesia for the period 2008-2018. The data used in this research are secondary data obtained from the publication of quarterly financial statements from 2008 to quarter 2 of 2018. The method that used in this research is path analysis with SPSS 20.0 as the analytical tool. The results of the study partially test the hypothesis (t-test), in substructure I shows that the capital variable has a significant negative effect on NPF, BOPO and inflation has a significant positive effect on NPF, FDR and GDP do not significantly influence NPF at Bank Muamalat Indonesia. In substructure II partially, Capital, BOPO, significant negative effect on ROA, FDR and NPF has a significant positive effect on ROA, Inflation and GDP does not significantly influence ROA while simultaneously significantly influencing ROA. Based on the sobel test, capital has a significant effect on ROA through NPF, BOPO has a significant effect on ROA through NPF, FDR has a significant effect on ROA through NPF, Inflation has a significant effect on ROA through NPF, while GDP has no significant effect on ROA through NPF.

Employee Engagement Dan Stress Kerja Pengaruhnya Terhadap Kepuasan Kerja Dan Turnover Intention di Aman Villas Nusa Dua – Bali

2020 ◽  
Vol 2 (1) ◽  
pp. 60-79
Author(s):  
Wayan Arya Paramarta ◽  
Ni Putu Kurnia Darmayanti
Keyword(s):  
Job Satisfaction ◽  
Employee Engagement ◽  
Work Stress ◽  
Turnover Intention ◽  
Secondary Data ◽  
Qualitative And Quantitative ◽  
Library Research ◽  
Analysis Technique ◽  
Negative Effect ◽  
Positive Effect

The aims of this study was to explain the effect of employee engagement and work stress on job satisfaction and turnover intention at Aman Villas Nusa Dua-Bali. The type of data used in this study is qualitative and quantitative data, with data sources namely primary and secondary data. Data collection method is interview, distributing questionnaires to respondents and library research, while the data analysis technique used Smart PLS 3.2.8. The results of this study showed that employee engagement had a positive effect and significant on job satisfaction, work stress had a negative effect but not significant on job satisfaction, employee engagement had a negative effect and significant on turnover intention, work stress had a positive effect and significant on turnover intention, job satisfaction had a negative effect but not significant on turnover intention, employee engagement had a positive effect but not significant on turnover intention trough job satisfaction, work stress had a positive effect but not significant on turnover intention trough job satisfaction at Aman Villas Nusa Dua-Bali.

The Factors Influencing Tourist Visitations Number in Curug Silawe

2019 ◽  
Vol 2 (3) ◽  
pp. 553-561
Author(s):  
Novian Hangga Prakosa ◽  
Fafurida Fafurida
Keyword(s):  
Economic Value ◽  
Consumer Surplus ◽  
Sampling Technique ◽  
Travel Cost ◽  
Analysis Tool ◽  
Literature Study ◽  
Factors Influencing ◽  
Negative Effect ◽  
Value Estimation ◽  
Positive Effect

The purposes of this research are to identify the influence of travel cost, income, distance, access, facilities, natural beautiness, and age on the number of individual visits to Curug Silawe and to estimate the economic value of Curug Silawe through individual travel cost method. The population in this study are tourists that visited Curug Silawe with sample of 98 respondents taken by the quota accidental sampling technique. The data collection method used are literature study and questionnaire. The analysis tool used are OLS linear regression and economic value estimation. The results showed the variables that influence the number of individual visits to Curug Silawe are income, distance and age. Income and age has a positive effect. While distance has a negative effect. The economic value of Curug Silawe reached IDR 1,109,930,140.48 per year. This value is obtained from consumer surplus obtained per individual per year of IDR 308,656.88. Tujuan dari penelitian ini adalah untuk mengidentifikasi pengaruh biaya perjalanan, pendapatan, jarak, akses, fasilitas, keindahan alam, dan usia pada jumlah kunjungan individu ke Curug Silawe dan untuk memperkirakan nilai ekonomi Curug Silawe melalui metode biaya perjalanan individu . Populasi dalam penelitian ini adalah wisatawan yang berkunjung ke Curug Silawe dengan sampel 98 responden yang diambil dengan teknik quota accidental sampling. Metode pengumpulan data yang digunakan adalah studi literatur dan kuesioner. Alat analisis yang digunakan adalah regresi linear OLS dan estimasi nilai ekonomi. Hasil penelitian menunjukkan variabel yang mempengaruhi jumlah kunjungan individu ke Curug Silawe adalah pendapatan, jarak dan usia. Penghasilan dan usia memiliki efek positif. Sedangkan jarak memiliki efek negatif. Nilai ekonomi Curug Silawe mencapai Rp1.109.930.140,48 per tahun. Nilai ini diperoleh dari surplus konsumen yang diperoleh per individu per tahun sebesar Rp308.656,88.

The depressing (negative) effect of oestradiol benzoate on the in vitro secretion of LH and FSH by the pituitary gland of the LRH-pretreated long-term ovariectomized rat changes into the augmentative (positive) effect after discontinuation of the LRH-pretreatment

1985 ◽  
Vol 110 (3) ◽  
pp. 329-337 ◽  
Author(s):  
G. A. Schuiling ◽  
H. Moes ◽  
T. R. Koiter
Keyword(s):  
Depressing Effect ◽  
Ovx Rats ◽  
Gonadotrophin Secretion ◽  
Oestradiol Benzoate ◽  
Negative Effect ◽  
Positive Effect ◽  
Perifusion System

Abstract. The effect of pretreatment in vivo with oestradiol benzoate on in vitro secretion of LH and FSH was studied in long-term ovariectomized (OVX) rats both at the end of a 5-day continuous in vivo pretreatment with LRH and 4-days after cessation of such LRH pretreatment. Rats were on day 0 sc implanted with osmotic minipumps which released LRH at the rate of 250 ng/h. Control rats were implanted with a piece of silicone elastomer with the dimensions of a minipump. On days 2 and 4 the rats were injected with either 3 μg EB or with oil. On day 5 part of the rats were decapitated and the in vitro autonomous (i.e. non-LRH-stimulated) and 'supra-maximally' LRHstimulated release of LH and FSH was studied using a perifusion system. From other rats the minipumps were removed on day 5 and perifusion was performed on day 9. On the 5th day of the in vivo LRH pretreatment the pituitary LH/FSH stores were partially depleted; the pituitaries of the EB-treated rats more so than those of the oil-injected rats. EB alone had no significant effect on the content of the pituitary LH- and FSH stores. On day 9, i.e. 4 days after removal of the minipumps, the pituitary LH and FSH contents had increased in both the oil- and the EB injected rats, but had not yet recovered to control values. In rats not subjected to the 5-days pretreatment with LRH EB had a positive effect on the supra-maximally LRH-stimulated secretion of LH and FSH as well as on the non-stimulated secretion of LH. EB had no effect on the non-stimulated secretion of FSH. After 5 days of in vivo pretreatment with LRH only, the in vitro non-stimulated and supra-maximally LRH-stimulated secretion of both LH and FSH were strongly impaired, the effect correlating well with the LRH-induced depletion of the pituitary LH/FSH stores. In such LRH-pretreated rats EB had on day 5 a negative effect on the (already depressed) LRH-stimulated secretion of LH (not on that of FSH). EB had no effect on the non-stimulated LH/FSH secretion. It could be demonstrated that the negative effect of the combined LRH/EB pretreatment was mainly due to the depressing effect of this treatment on the pituitary LH and FSH stores: the effect of oestradiol on the pituitary LRH-responsiveness (release as related to pituitary gonadotrophin content) remained positive. In LRH-pretreated rats, however, this positive effect of EB was smaller than in rats not pretreated with LRH. Four days after removal of the minipumps there was again a positive effect of EB on the LRH-stimulated secretion of LH and FSH as well as on the non-stimulated secretion of LH. The positive effect of EB on the pituitary LRH-responsiveness was as strong as in rats which had not been exposed to exogenous LRH. The non-stimulated secretion of FSH was again not affected by EB. The results demonstrate that the effect of EB on the oestrogen-sensitive components of gonadotrophin secretion consists of two components: an effect on the pituitary LRH-responsiveness proper, and an effect on the pituitary LH/FSH stores. The magnitude of the effect of EB on the LRH-responsiveness is LRH dependent: it is very weak (almost zero) in LRH-pretreated rats, but strong in rats not exposed to LRH as well as in rats of which the LRH-pretreatment was stopped 4 days previously. Similarly, the effect of EB on the pituitary LH and FSH stores is LRH-dependent: in the absence of LRH, EB has no influence on the contents of these stores, but EB can potentiate the depleting effect of LRH on the LH/FSH-stores. Also this effect disappear after cessation of the LRH-pretreatment.

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