Effect of seeding rate and row spacing on the height of Medicago sativa plants

2019 ◽  
pp. 37-43
Author(s):  
H. I. Demydas ◽  
M. H. Kvytko
Keyword(s):  
Medicago Sativa ◽  
Plant Height ◽  
Geographical Origin ◽  
Growing Season ◽  
Row Spacing ◽  
Seeding Rate ◽  
The Third ◽  
Flowering Phase ◽  
Cultivation Technology ◽  
Second Year

The purpose of the research was to identify the influence of cultivation technology elements on the parameters of Medicago sativa plant height of different geographical origin. Methods. Field, measurement, statistical methods. Research results. Observations showed that in the year of sowing during the vegetation of Medicago sativa its stalks were stunted and ranged within 28.0—33.3 cm irrespective of the seeding rate, varietal features and row spacing. In the second year of life in the budding phase, the plant growth rates of the varieties maintained throughout the growing season, whereas in the early flowering phase, they varied according to mowing and had a sinusoidal nature. The intensity of growth processes in the third year of life changed and in the budding phase of Medicago sativa it remained stable only in the first-second mowing ranging within 61.3—69.3 cm, whereas in the third-fourth mowing the indicators decreased from 59.1 up to 44.5 cm, or 10.2—16.8 cm. In the flowering phase, plant height was the highest in the first mowing and reached 99.7—101.4 cm, which decreased to 55.2 in the second and third mowing to 59.6 cm, or by 39.5—41.8 cm, regardless of the factors studied. Conclusions. The tendency towards the decrease in plant height with reduction of row spacing to 12.5 cm and increase of seeding rate and its growth at row spacing of 25 cm was revealed. The sinusoidal nature of Medicago sativa formation according to mowing both between the varieties and row spacing was established.

scholarly journals FEATURES OF BRASSICA RAPA'S GROWTH AND DEVELOPMENT, DEPENDING ON THE TERRITORY OF SOWING THE SEED

2019 ◽  
pp. 183-194
Author(s):  
Serhii Vdovenko
Keyword(s):  
Seed Germination ◽  
Soil Temperature ◽  
Growth And Development ◽  
Total Yield ◽  
Growing Season ◽  
Vegetation Period ◽  
Row Spacing ◽  
The Third ◽  
Golden Ball ◽  
And Control

In order to study the effect of the time of sowing seeds on the passage of morphogenesis and productivity of rapeseed, the scheme included experiments where the seeds were sown in I, II, III in April, I and II in May. The experiment used varieties of Golden Ball, Purpurleopop, Purpurov and Geisha, and control was the variant in which the seeds of the Golden Ball varieties were sown in the second decade of April with a row spacing of 45 cm. laboratory - to determine the total yield; statistical - to establish the reliability of the investigated factors. Seed germination analysis used in the experiment ranged from 78.9% to 81.1% on average. The highest indicator of seed germination was characterized by the Purpulepop variety, where the studied value was 83.2%, which was dominated by the seed germination of the control variant by 2.1%. In the early stages of sowing seeds, the period of seedling formation was shorter. Seeding of seeds in the first two decades of April on the surface of the soil was observed for 8 days. The short sprouting period was characterized by all varieties of turnips. As a result of sowing turnip seeds at a later date, namely in the third decade of April - the first and second decade of May and the setting of a higher soil temperature, the period of germination was extended and ranged from 8 to 10 days. By using the term of sowing seeds I-II decade of April, the short interphase period was characterized by Purpleupop and Purpurova varieties, where the specified period was only 22 days. The sowing of turnip seeds at a later date ensured the formation of an interphase period of "seedlings - leaf rosette" in 23-25 days except Purpulopop variety. The interphase period "leaf rosette - the beginning of rooting" and "the beginning of rooting - technical maturity" determined the benefits of early seeding, namely in the first decade of April on varieties Purpulopop and Purpurov.The short vegetation period was characterized by the Golden Ball plants for sowing seeds in the first and third decades of April and the first of May. During the specified seeding period the duration of the growing season was only 40 days. A longer vegetation period was characterized by plants of the Geisha variety for sowing seeds in the first two decades of April. As a result of the use of the researched elements of technology to grow turnips in open soil, the total yield varied from 11.0 t / ha to 24.0 t / ha. The most productive is the first sowing of rapeseed, where its value ranged from 20.6 t / ha to 22.7 t / ha. At the same time, when sowing seeds in the first decade of April, the yield of turnip varieties Purpulepop was the highest and was 22.7 t / ha, or the increase was 2.4 t / ha.

scholarly journals 070 EVALUATION OF APPLE TREE TRAINING TECHNIQUES FOR HIGHER-DENSITY ORCHARD SYSTEMS IN NORTH CAROLINA

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 438a-438
Author(s):  
Michael Parker ◽  
Eric Young
Keyword(s):  
North Carolina ◽  
Apical Meristem ◽  
Apple Tree ◽  
Growing Season ◽  
Leaf Removal ◽  
Training Techniques ◽  
The Third ◽  
Second Year ◽  
Leader Training ◽  
Different Climates

Controlling vegetative growth resulting from a long growing season in the southeast is difficult while trying to promote early fruiting. This study was initiated in 1990 to evaluate higher density leader training techniques, cultivar interactions, and the benefits of pre-plant fumigation on apple replant sites. Another objective was to evaluate these management parameters in four regions with very different climates and elevations. The training techniques evaluated were, weak leader renewal, bending of the leader during the growing season, and partial terminal leaf removal every 10 inches of leader growth (without injuring the apical meristem). The cultivars used were Jonagored, Spur Gala, and Red Fuji, all on Mark rootstock. First and second year branching was not significantly different between the various training techniques. Yields during the third year did not appear to differ between the leader training techniques. Pre-plant fumigation appeared to be beneficial in increasing tree growth in only two of the four sites.

scholarly journals Закономірності формування урожайності насіння проса прутоподібного в умовах Лісостепу України

2018 ◽  
pp. 85-99
Author(s):  
М. І. Кулик ◽  
І. І. Рожко
Keyword(s):  
Crop Yields ◽  
Graphical Representation ◽  
Weather Conditions ◽  
Growing Season ◽  
Forest Steppe ◽  
Row Spacing ◽  
Seed Material ◽  
Cultivation Technology ◽  
Number Of Stems

Акцентовано увагу на необхідності дослідження особливостей формування урожайності насіння проса прутоподібного (світчграсу) для забезпечення виробничих площ достатньою кількістю насіннєвого матеріалу. Здійснено спроуа визначення залежності урожаю насіння від елементів технології вирощування у зв’язку з погодними умовами веґетаційного періоду. Експеримент із вивчення насіннєвої продуктивності світчграсу проведено в умовах Лісостепу з використанням методичних рекомендацій вітчизняних та зарубіжних авторів. За результати дослідження визначено комплексний вплив елементів технології вирощування на фоні контрастних умов веґетації культури на урожайність насіння світчграсу. Встановлено, що на урожайність насіння світчграсу мають вплив погодні умови вирощування (середньодобова температура повітря та кількість опадів) протягом веґетаційного періоду. Найбільша урожайність насіння формується за вирощуванні рослин за ширини міжряддя 60 см, Як ширші, так і вужчі міжряддя зменшують даний показник. Визначено рівнозначний вплив біометричних показників рослин (висоти та кількості стебел) на урожайність насіння світчграсу. При цьому застосування весняного підживлення посівів певною мірою нівелює негативний вплив погодних умов. The article focuses attention on the necessity of studying the peculiarities of the formation of switchgrass yield for providing productive areas with sufficient amount of seed material. An attempt to determine the dependence of yield on the elements of cultivation technology in connection with the weather conditions of the growing season has been made. The experiment on studying seed efficiency of switchgrass was carried out under the conditions of the Forest-Steppe using methodolo-gical recommendations of domestic and foreign authors. The yield of seed was determined by weighing method by weighing the seed material from each variant of the field experiment. In our study we used both general scientific methods (dialectics, experiment, analysis and synthesis) and special ones, among them: laboratory – the determination of quantitative indices of plants (height and density of stems); field – determination of the interaction of the subject with the object of research; calculation-weight – establishment of seed productivity and yield of seeds; mathematical analysis of interconnections and graphical representation of data in the experiment.  Complex influence of the cultivation technology elements during the contrast conditions of crop vegetation upon the switchgrass yield has been established. It has been determined that the weather conditions (average daily air temperature and rainfall) during the growing season influenced on switchgrass yield. The highest seed yield is formed by growing plants at a width of rotation of 60 cm, both wider and narrowed row spacings reduce this figure. The equivalent effect of biometric indices of plants (height and number of stems) on the yield of the seed of the switchgrass is determined. At the same time the application of spring crop yields to some extent offsets the negative effects of weather conditions.  Application of fertilizers in plant cultivation with row spacing of 60 cm – from 0.57 t/ha to 0.72 t/ha has the greatest influence on swithgrass yield. Both increase and decrease of the width of row spacing leads to decrease of  crop yield. Swithgrass yield depends on the height of the plants by 25% under the coefficient of correlation r = 0.51 and by 23% – on the number of stems according to the correlation coefficient r = 0.48.

scholarly journals Stand density effects on birdsfoot trefoil herbage yield grown for combined usage

2011 ◽  
Vol 27 (4) ◽  
pp. 1523-1530
Author(s):  
S. Petrovic ◽  
S. Vuckovic ◽  
A. Simic
Keyword(s):  
Seed Production ◽  
Stand Density ◽  
Birdsfoot Trefoil ◽  
Row Spacing ◽  
Seeding Rate ◽  
Seed Crop ◽  
The Third ◽  
Density Effects ◽  
Herbage Yield

Birdsfoot trefoil grown for seed (cv. Bokor) was examined in agroecological conditions of Western Serbia during period 2007-2009. The goal was to determine herbage yield which could be achieved growing seed crop, using different interrow spacing (12.5, 25 and 50 cm) and various seeding rates (2, 4 and 8 kg ha-1). The highest hay yield was obtained in the third production year at the narrowest spacing and using the highest seeding rate (5.26 t ha-1). Total hay production during 3 years using birdsfoot trefoil seed crop for herbage yield ranged from 9.11 to 14.83 t ha-1 depending on row spacing and from 10.74 to 13.2 t ha-1 depending on seeding rate. The highest stand density (8 kg ha-1 seeding rate and 12.5 cm interrow spacing) produced the highest herbage yield of birdsfoot trefoil in the combined usage (for forage and seed production).

Field germination and preservation of grain sorghum plants depending on the row-spacing width and the seeding rate

2021 ◽  
Vol 2020 (1-2) ◽  
pp. 73-83
Author(s):  
A.A. Rozhkov ◽  
S.Yu. Davydenko
Keyword(s):  
Agricultural Sector ◽  
Survival Rates ◽  
Grain Sorghum ◽  
Limiting Factor ◽  
Row Spacing ◽  
Seeding Rate ◽  
Significant Difference ◽  
Field Germination ◽  
Cultivation Technology ◽  
Adaptive Technologies

The results of two-year research on the complex effect of different options of row-spacing width and the seeding rate on field germination and preservation of grain sorghum hybrids plants are presented. Problem statement. The conservatism of agricultural products producers, as well as the lack of adaptive technologies for growing sorghum, is a limiting factor of enlargement of sorghum sowing areas. That is why improving the technology of sorghum growing, which forms high and stable yields under arid conditions, is a relevant task at the current stage of country's agricultural sector development. The aim of the research was to determine the influence of various options of combining the seeding rate and row-spacing width on field germination and preservation of grain sorghum plants under conditions of the Northern Steppe of Ukraine. Research methods. Research on study the influence of three row-spacing width – 35, 45 and 70 cm and four options of the seeding rates of 100, 140, 180 and 220 thousand pieces/ha on field germination and preservation of sorghum plants of Svat and Flagg hybrids were held in 2019, 2020 on the basis of Farming Enterprise "Dyunis" of Kreminsk District, Luhansk Region. The area of sown and accounting plots was 40.0 and 30.0 m2, respectively. Research results. In experiments we have noted the tendency to increase field germination, under condition of the seeding rate increases and row-spacing widening. The influence of the studying options of the seeding rate and row-spacing on plant preservation was significantly higher than on field germination. On the crops of both hybrids, the influence of the seeding rate to a greater extent manifested on the options with row-spacing of 70 cm. Thus, with an increase in the seeding rate from 100 to 220 thousand pieces/ha, the plant preservation on the options with 35 cm row-spacing decreased by 3.5 %, while on the options with 70 cm row-spacing – by 6.7 %. There was no significant difference between the plant preservation indicators obtained on the options with row-spacing of 35 and 45 cm. With the widening of the row-spacing to 70 cm, this indicator significantly decreased. Conclusions. The studied element of the cultivation technology provided certain changes in the indices of field germination of seeds and the safety of sorghum plants. More influence they have on the safety of the plant, since the start of the growing competition between the plants is much less. An increase in the seeding rate caused a significant decrease in plant preservation, and to a greater extent with an increase in the seeding rate from 180 to 220 thousand pieces/ha. In the seeding rate from 100 to 180 thousand pieces/ha, there was no significant variation in the survival rates of sorghum plants. There was virtually no difference between the survival rates of sorghum plants in variants with row spacing of 35 and 45 cm, which indicates that within the boundaries of these row spacing, the competition between plants does not change significantly. Key words: row-spacing width, seeding rate, sorghum, hybrid, field germination, plants preservation.

scholarly journals Effect of seed rate and row spacing on grain yield of sorghum

2018 ◽  
Vol 15 (2) ◽  
pp. 81-91
Author(s):  
MR Gondal ◽  
A Hussain ◽  
S Yasin ◽  
M Musa ◽  
HS Rehman
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Plant Density ◽  
Morphological Changes ◽  
Grain Weight ◽  
Stem Diameter ◽  
Row Spacing ◽  
Seeding Rate ◽  
Seed Rate ◽  
1000 Grain Weight

An experiment to investigate the effect of seed rate (5, 7.5, 10, 12.5 and 15 kg ha-1) and row spacing (30, 45 and 60cm) on agronomic characteristics of plants including stem densitym-2, plant height, stem diameter, number of heads m-2, number of heads per plant, number of grains per head, 1000-grain weight and grain yield was conducted using the cultivar “Sorghum 2011” for two years 2016 and 2017. Seed rates and row spacing had significant effect on plant height, plant density m-2, number of heads m-2, number of grains per head and grain yield. Row spacing had non-significant effect on stem diameter, number of heads per plant and 1000-grain weight. Row spacing at 30 cm produced the highest number of plants m-2 and plant height. Plant height increased with increase in seed rate in all the row spacing. Stem diameter decreased with increase in the seed rate and row spacing. Narrow row spacing (30 cm) and low seeding rate (5 kg ha-1) produced the maximum grain yield consistently during both years. Lower yields were recorded in the treatments having greater row spacing (60 cm) and higher seed rates (7.5, 10, 12.5 & 15 kg ha-1). Higher seed rates and wider row spacing induced morphological changes rendering plants to lodging.SAARC J. Agri., 15(2): 81-91 (2017)

scholarly journals Effect of Row Spacing and Seeding Rate on Yield Component and Seed Yield of Alfalfa (Medicago sativa L.)

2010 ◽  
Vol 2 (1) ◽  
pp. 74-80 ◽  
Author(s):  
Gholamreza ABADOUZ ◽  
Abdollah HASANZADEH GORTTAPEH ◽  
Abdol Amir RAHNEMA ◽  
Adela BEHRADFAR
Keyword(s):  
Medicago Sativa ◽  
Seed Yield ◽  
Yield Component ◽  
Row Spacing ◽  
Seeding Rate ◽  
Medicago Sativa L

scholarly journals The influence of seeding rates and methods of sowing on the duration of the growing season of chickpea plants

2019 ◽  
Vol 2019 (2) ◽  
pp. 216-224
Author(s):  
A.O. Rozhkov ◽  
Y.U. Voropai
Keyword(s):  
Weather Conditions ◽  
Growing Season ◽  
Row Spacing ◽  
Seeding Rate ◽  
Complex Influence ◽  
Phenological Phases

It was shown the results of three-year research on the complex influence of different variants of row spacing and seeding rates on the phenological phases duration of chickpea plants development of different varieties. Reducing the competition between plants by narrowing the width of rows spacing and reducing the seeding rate provided lengthening periods of branching, formation and ripening of beans of both chickpea varieties. Keywords: weather conditions, sowing method, seeding rate, row spacing, chickpea, phenological phases.

scholarly journals Formation of alfalfa leafiness by the phases of growth and development

2019 ◽  
pp. 49-56 ◽  
Author(s):  
M. H. Kvytko
Keyword(s):  
Forest Soils ◽  
Growth And Development ◽  
Geographical Origin ◽  
Forest Steppe ◽  
Row Spacing ◽  
Seeding Rate ◽  
Local Variety ◽  
Leaf Mass ◽  
Gray Forest Soils ◽  
The Right

The results of two-year studies (2017—2018) on the effect of the seeding rate and row spacing on the leafiness of alfalfa plants of different geographical origin carried out on the gray forest soils of the right-bank Forest-Steppe are presented. It is established that the variety of the southern breeding Angelica prevailed over the local variety Rosan by its leafiness by 0.5—1.6 % regardless of the phase of growth and development. The highest leafiness indices were obtained when the seeding rate was 8.0 million/ha, which amounted to 50.9—51.8 %. The row spacing provided the growth of the leaf mass by 0.2 %.

scholarly journals Features of growth of sorghum [Sorghum bicolor (L.) Moench] plants depending on the width of rows and seeding rate in the conditions of the Right-Bank Forest-Steppe of Ukraine

2021 ◽  
Vol 17 (2) ◽  
pp. 139-145
Author(s):  
L. A. Pravdyva
Keyword(s):  
Growth And Development ◽  
Growing Season ◽  
Planting Density ◽  
Forest Steppe ◽  
Row Spacing ◽  
Seeding Rate ◽  
Density Reduction ◽  
Leaf Surface Area ◽  
The Right ◽  
Intensive Growth

Purpose. To establish the optimal row spacing and so­wing rate of sorghum seeds of grain varieties ‘Dniprovskyi 39’ and ‘Vinets’, to substantiate their influence on the growing season and biometric parameters of plants in the Right-Bank Forest-Steppe of Ukraine. Methods. Field, laboratory, mathematical and statistical. Results. The most intensive growth and development of sorghum plants was observed when sowing seeds with a row spacing of 45 cm and a seeding rate of 200 thousand pieces/ha. In particular, the duration of the growing season under such conditions was the smallest: 108 days for the ‘Dniprovskyi 39’ variety and 106 days for the ‘Vinets’ variety. At the same time, the indicators of field seeds germination, plant height and stem diameter were maximum in the experiment: ‘Dniprovskyi 39’ – 88.7%, 137.3 cm and 1.7 cm, ‘Vinets’ – 86.9%, 121.8 cm and 1.6 cm, respectively. It was found that an increase in seeding rate reduced indicators of productive tillering, leaf area and weight per plant. The most intense tillering of sorghum plants was observed at a seeding rate of 150 and 200 thousand pieces/ha for all the studied variants of the row spacing: on average, up to two panicles well filled with grain per plant, depending on the varietal characte­ristics. At the rate of 250 thousand pieces/ha, tillering of plants in both varieties was somewhat weaker – 1.0–1.1 panicles per plant. The largest indicators of leaf surface area and weight of one plant were with a row spacing of 45 cm: 1528–2320 cm2 and 169.2–185.6 g in the variety ‘Dniprovskyi 39’ and 1476–2180 cm2 and 143.1–162.3 g in the variety ‘Vinets’ depending on planting density. Reduction of row spacing up to 15 cm and its increase up to 70 cm led to a decrease in the main parameters of plant growth and development. Conclusions. Sorghum plants developed better when sown with a row spacing of 45 cm and a seeding rate of 200 thousand pieces/ha, which were recommended for growing crops in the conditions of the Right-Bank Forest-Steppe of Ukraine.

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