EFFECTS OF ’VOLUNTEER’ WHEAT AND BARLEY ON THE GROWTH AND YIELD OF RAPESEED

1989 ◽  
Vol 69 (2) ◽  
pp. 445-453 ◽  
Author(s):  
GEORGE MARSHALL ◽  
IAN N. MORRISON ◽  
LYLE FRIESEN ◽  
WESLEY ROTHER
Keyword(s):  
Linear Regression ◽  
Field Experiments ◽  
Regression Coefficient ◽  
Linear Regression Analysis ◽  
Triticum Aestivum L ◽  
Growth And Yield ◽  
Linear Regression Coefficient ◽  
Hordeum Vulgare L ◽  
Brassica Napus L ◽  
Intermediate Density

Field experiments were conducted in 1982 and 1983 to determine the effects of increasing densities (0–60 plants m−2) of ’volunteer’ wheat (Triticum aestivum L. ’Neepawa’) and barley (Hordeum vulgare L. ’Bonanza’) on the growth and seed yield of rapeseed (Brassica napus L. ’Regent’). The results were plotted using linear regression analysis and described by the equation[Formula: see text]where y = biomass or yield (g m−2); b0 = intercept; b1 = linear regression coefficient and x1 = density of ’volunteer’ plants m−2. From the results obtained in 1982 and 1983, ’volunteer’ wheat interference reduced rapeseed yields as described by the equations[Formula: see text]and[Formula: see text]respectively. Similarly, the reduction in rapeseed yield in the two years caused by ’volunteer’ barley was described by the equations[Formula: see text]and[Formula: see text]Thus, an intermediate density of 30 ’volunteer’ wheat plants reduced the yield of rapeseed by approximately 17% in both years; whereas, an equivalent density of ’volunteer’ barley plants reduced rapeseed yields by approximately 27% in 1982 and 35% in 1983.Key words: Competition, rapeseed, volunteer, wheat, barley, yield loss

EFFECTS OF VOLUNTEER WHEAT AND BARLEY ON THE GROWTH AND YIELD OF FLAX

1990 ◽  
Vol 70 (4) ◽  
pp. 1115-1122 ◽  
Author(s):  
LYLE FRIESEN ◽  
IAN N. MORRISON ◽  
GEORGE MARSHALL ◽  
WESLEY ROTHER
Keyword(s):  
Linum Usitatissimum ◽  
Field Experiments ◽  
Yield Loss ◽  
Triticum Aestivum L ◽  
Growth And Yield ◽  
Regression Equations ◽  
Nonlinear Regression Analysis ◽  
Hordeum Vulgare L ◽  
Linum Usitatissimum L ◽  
Intermediate Density

Field experiments were conducted in 1982 and 1983 to determine the effects of increasing densities (0–70 plants m−2) of volunteer wheat (Triticum aestivum L. Neepawa) and barley (Hordeum vulgare L. Bonanza) on the growth and seed yield of flax (Linum usitatissimum L. Dufferin). Rectangular hyperbolic models were fitted to data using nonlinear regression analysis. Results indicated that both volunteer cereals severely reduced flax biomass and yield, with volunteer barley interference causing greater losses than volunteer wheat at equivalent densities. From the regression equations it was calculated that an intermediate density of 30 volunteer wheat plants m−2 reduced the yield of flax by 49% in 1982 and 53% in 1983, whereas an equivalent density of volunteer barley plants reduced flax yields by 56% in 1982 and 67% in 1983.Key words: Competition, flax, volunteer wheat, volunteer barley, rectangular hyperbola, yield loss

AGRONOMIC PERFORMANCE OF FLAX GROWN ON CANOLA, BARLEY AND FLAX STUBBLE WITH AND WITHOUT TILLAGE PRIOR TO SEEDING

1989 ◽  
Vol 69 (1) ◽  
pp. 31-38 ◽  
Author(s):  
G. H. GUBBELS ◽  
E. O. KENASCHUK
Keyword(s):  
Linum Usitatissimum ◽  
Field Experiments ◽  
Crop Residues ◽  
Conventional Tillage ◽  
Growth And Yield ◽  
No Tillage ◽  
Hordeum Vulgare L ◽  
Brassica Napus L ◽  
Tillage Practices ◽  
Linum Usitatissimum L

Field experiments were conducted to determine the effect of mature crop residues and volunteer seedling residues of canola (Brassica napus L.), barley (Hordeum vulgare L.) and flax (Linum usitatissimum L.) on the growth and yield of subsequent flax crops seeded after conventional tillage. A second set of field experiments was also conducted which included both flax and barley as test crops on canola and barley stubble and included an additional comparison between conventional tillage and no tillage. Flax yields were generally lower on canola and flax stubble than on barley stubble with conventional tillage before seeding. Averaged over 6 yr the reduction was 9% on canola stubble. With no tillage prior to seeding, flax yielded as well on canola as on barley stubble. Spring volunteer seedlings of canola and flax often reduced flax yields but fall volunteer growth had no marked effect. Barley yielded better on canola than on its own stubble, and tended to yield better with tillage prior to seeding than without.Key words: Flax, Linum usitatissimum L., crop residues, phytotoxins, tillage practices

The effect of time and rate of N application on the yield and N uptake of wheat, barley, flax and four cultivars of rapeseed

1991 ◽  
Vol 71 (2) ◽  
pp. 227-238 ◽  
Author(s):  
W. F. Nuttall ◽  
S. S. Malhi
Keyword(s):  
Field Experiments ◽  
Brassica Campestris ◽  
N Uptake ◽  
Triticum Aestivum L ◽  
Yield Response ◽  
Hordeum Vulgare L ◽  
Brassica Napus L ◽  
N Application ◽  
Linum Usitatissimum L ◽  
Nitrate Fertilizer

Field experiments were conducted for 3 yr on a Black Chernozemic soil at Melfort in northeastern Saskatchewan to determine the yield response and N uptake of seven crop/cultivars to autumn and spring applied N. The crop/cultivars were, rapeseed (Brassica napus L. 'Midas' and 'Target'; Brassica campestris L. 'Torch' and 'Echo'); wheat (Triticum aestivum L. 'Manitou'); barley (Hordeum vulgare L. 'Conquest') and flax (Linum usitatissimum L. 'Noralta') (main plots). Ammonium nitrate fertilizer treatments consisted of three rates of autumn broadcast N, 0, 34 and 67 kg N ha−1 (subplots), combined with N at 0, 11, 22, 45, 67 and 134 kg N ha−1 side-banded with seed in the spring (subsubplots). At the 67 kg N ha−1 rate, autumn application was inferior to spring application in increasing grain yield and N uptake for three of the seven crops (Torch and Echo rapeseed and Manitou wheat). Nitrogen fertilizer applied at 134 kg N ha−1 in spring produced grain yields that were not significantly higher than the split application of 67 kg N ha−1 applied in autumn and 67 kg N ha−1 applied in spring. All crops responded to spring applied N and continued to increase in yield up to the high rates of 67 or 134 kg N ha−1. Key words: Time of N application, N, crops, cultivars

EFFECT OF SPRING SEEDLING RESIDUES ON THE AGRONOMIC PERFORMANCE OF SUBSEQUENT FLAX AND BARLEY CROPS SEEDED WITH AND WITHOUT PRIOR TILLAGE

1989 ◽  
Vol 69 (1) ◽  
pp. 151-159 ◽  
Author(s):  
G. H. GUBBELS ◽  
E. O. KENASCHUK
Keyword(s):  
Hordeum Vulgare ◽  
Linum Usitatissimum ◽  
Field Experiments ◽  
Growth And Yield ◽  
Plant Residues ◽  
Barley Seedling ◽  
Hordeum Vulgare L ◽  
Brassica Napus L ◽  
Toxic Compounds ◽  
Linum Usitatissimum L

Field experiments were conducted to determine the effect of spring seedling residues of canola (Brassica napus L. and B. campestris L.), barley (Hordeum vulgare L.), flax (Linum usitatissimum L.) and a weed mixture on the growth and yield of subsequent crops of flax and barley seeded after tillage of the seedling plots. Some treatments were also tested without tillage, the seedlings being killed with paraquat. The large quantities of spring seedling residues had variable effects on flax yields, resulting in increases in some years and decreases in others compared to seedling-free plots. Flax yields were generally reduced by canola, flax and weed seedling residues, and increased by barley seedling residue. Averaged over 6 yr, canola seedlings reduced flax yields by 2% and barley increased flax yields by 3% with conventional tillage. On the other hand, barley yields were reduced 7% by conola and 17% by barley seedling residues. Yields of flax and barley were higher without than with tillage of the seedlings prior to seeding. The results are discussed in relation to the effects of the seedling residues on soil crusting, toxic compounds in the residues and toxic compounds formed during decomposition of the residues.Key words: Flax, Linum usitatissimum L., barley, Hordeum vulgare L., plant residues, tillage systems

scholarly journals Pengaruh Biaya Promosi dan Biaya Distribusi Terhadap Hasil Penjualan Produk Bawang Goreng Pada UD Bawang Goreng di Desa Pagedangan Kecamatan Adiwerna Kabupaten Tegal

2018 ◽  
Vol 10 (1) ◽  
pp. 50-64
Author(s):  
Darnawi ◽  
Jaka Waskito ◽  
Mahben Jalil
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Significant Influence ◽  
Regression Coefficient ◽  
Linear Regression Analysis ◽  
Simple Linear Regression ◽  
Linear Regression Coefficient ◽  
Distribution Costs ◽  
Simple Linear Regression Analysis ◽  
Distribution Cost

The purpose of this study is 1). To know the effect of promotion cost to the sale result, 2). To know the effect of distribution cost on sales result, 3). To know the effect of promotion cost and distribution cost together to the sales result. Data collection techniques used in this study is the method of documentation and interviews. While the data analysis method used is classical assumption test, simple linear regression analysis, test of simple linear regression coefficient, multiple linear regression analysis, test of multiple linear regression coefficient, coefficient of determination. Based on the results of simple linear regression analysis calculations obtained results for the promotion variable in obtaining a probability significance value of 0.000 is smaller than 0.05 means there is a significant effect of promotion on sales results concluded that the first hypothesis that reads "Suspected there is the influence of promotional costs on sales results fried onion product "proved true. The result of calculation of simple linear regression analysis obtained result for the distribution variable in obtaining the value of probability significance of 0.000 is smaller than 0,05 meaning there is significant influence of distribution to result of sale can be concluded that second hypothesis which reads "allegedly there influence of distribution cost to result of sale fried onion product "is proven. The result of simultaneous influence test obtained by the significance level of 0,000 <0,05 means there is a significant influence between the cost of promotion and distribution costs together to the sales results can be said the third hypothesis that reads "It is suspected that there is influence of promotion costs and distribution costs together. same to the sale of onion garlic products on UD Bawang Goreng in Pagedangan Village Adiwerna District Tegal Regency "proved true.

scholarly journals PENGARUH MOTIVASI DAN KEPUASAN KERJA TERHADAP KINERJA KARYAWAN (Studi Pada Bank Kalsel Syariah Kandangan)

2019 ◽  
Vol 6 (2) ◽  
pp. 197
Author(s):  
Sri Winarsih ◽  
Ahmad Alim Bachri ◽  
Akhid Yulianto
Keyword(s):  
Job Satisfaction ◽  
Regression Analysis ◽  
Linear Regression ◽  
Work Motivation ◽  
Regression Coefficient ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Positive Sign ◽  
Test Statistic ◽  
Employee Job Satisfaction

<em>Results of multiple linear regression analysis in this study produces constant of 0354 stating that if there is no work Morivasi ( x1 ) and job satisfaction ( x2 ) then job satisfaction is equal to 0.354 . Regression coefficient of work motivation ( x1 ) of 0.396 states that any additions ( as a positive sign ) 1 point will increase the job satisfaction of job satisfaction on job satisfaction assuming 0.396 ( x2 ) fixed . Job satisfaction regression coefficient ( x2 ) of 0.688 states that any additions ( as a positive sign ) 1 point of work motivation will increase employee job satisfaction in 0688 with the notion of work motivation ( x1 ) remains.Significant test simultaneously / together ( test statistic F ) result in calculated F value of 78 145. At Kalsel Bank Syariah Kandangan or it can be said that the work motivation ( x1 ) and job satisfaction ( x2 ) jointly affect the performance of employees at Bank Syariah Kandangan South Kalimantan. Calculations using the t -test,  concluded that motivation is a significant effect on the performance of employees at Bank Syariah Kandangan Kalsel zero  hypothesis ( Ho ) is rejected and Ha accepted, so this hypothesis has been tested empirically.</em><br />

scholarly journals PENGARUH INVESTASI TERHADAP PENYERAPAN TENAGA KERJA DI JAWA TENGAH TAHUN 2009-2013

2017 ◽  
Vol 3 (2) ◽  
pp. 139
Author(s):  
Abdul Haris Romdhoni
Keyword(s):  
Regression Analysis ◽  
Data Analysis ◽  
Linear Regression ◽  
Research Method ◽  
Quantitative Research ◽  
Regression Coefficient ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Test Methods ◽  
Central Java

This study aims to determine the effect of investment on employment in Central Java in 2009-2013. As it is known that investment plays an important role in the absorption of labor or can reduce unemployment. Thus with the increased investment hence the absorption of labor will also increase. The research method used in this research is quantitative research method. This research was conducted in Central Java. The test used is the instrument using the validity test. Methods of data analysis using multiple linear regression analysis, classical assumption test. The results of this study indicate that the increase can be explained by the regression equation is Y = 16595732.325 + 0.32 X. Where the constant is positive value of 16595732.325 indicates that if the investment variable is considered constant (0), then the value of labor absorption of 16595732,325 . Then the regression coefficient of the investment variable is 0.32, this means that if the investment is increased one unit, it will increase the labor absorption of 0.32.

scholarly journals Pengaruh Pertumbuhan Ekonomi dan Pertumbuhan Penduduk Terhadap Tingkat Pengangguran di Kabupaten Mimika

2021 ◽  
Vol 1 (1) ◽  
pp. 54-66
Author(s):  
Putri Nadya Djaelani ◽  
Habel Taime
Keyword(s):  
Economic Growth ◽  
Regression Analysis ◽  
Linear Regression ◽  
Population Growth ◽  
Unemployment Rate ◽  
Positive Relationship ◽  
Regression Coefficient ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Coefficient Of Regression

This study aims to determine the significance of the influence of economic growth and population growth on the unemployment rate in Mimika Regency. The method in this study is an associative method using multiple linear regression analysis tools with the help of SPSS statistic. Based on the results obtained in this study, the value of regression coefficient in economic growth variable was 0.058. The coefficient of positive value means that there is a positive relationship between economic growth and the unemployment rate. Then the coefficient of regression in the population growth variable was 0.451. The coefficient of positive value means that there is a positive relationship between population growth and the unemployment rate.

No-till alfalfa stand termination strategies: Alfalfa control and wheat and barley production

1999 ◽  
Vol 79 (1) ◽  
pp. 71-83 ◽  
Author(s):  
W. J. Bullied ◽  
M. H. Entz ◽  
S. R. Smith Jr.
Keyword(s):  
Field Experiments ◽  
Treatment Method ◽  
Triticum Aestivum L ◽  
Hordeum Vulgare L ◽  
Unique Problem ◽  
Crown Area ◽  
No Till ◽  
Cereal Grain ◽  
Medicago Sativa L ◽  
The Relationship

Crop rotations involving perennial alfalfa (Medicago sativa L.) present the unique problem of terminating the alfalfa stand. Intensive tillage currently used to terminate alfalfa increases the risk of soil erosion and reduces many of the rotational benefits from alfalfa. Inadequate alfalfa termination results in severe competition to the following crop by surviving alfalfa plants. Field experiments were conducted in Manitoba between 1991 and 1993 with the following objectives: 1) to investigate no-till vs. tillage management systems for successful alfalfa termination, 2) to compare fall vs. spring alfalfa termination, 3) to compare the performance of barley (Hordeum vulgare L.) and wheat (Triticum aestivum L.) seeded into alfalfa residue, and 4) to determine the relationship between alfalfa escapes and grain yield. Fall termination produced higher grain yields than spring termination, however this advantage was only achieved with the better termination treatments capable of lowering alfalfa regrowth below a critical level. The best herbicide treatment tested here was glyphosate at 1.78 kg a.i. ha−1. Successful treatments would have to reduce residual alfalfa basal crown area (a measure of alfalfa regrowth potential) after cereal grain harvest to below 2%. Alfalfa escapes reduced yield of following wheat and barley crops similarly (P > 0.05). When alfalfa termination treatment method allowed some regrowth, in-crop herbicide treatments significantly reduced alfalfa basal crown area. Results of this study indicate that it is feasible to terminate alfalfa with herbicides in the absence of tillage, however an overall cropping strategy, including adequate consideration of weeds present in alfalfa fields at time of termination, must be considered. Key words: Herbicides, competition, recropping, no-till, alfalfa regrowth, soil conservation, sustainable cropping

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