scholarly journals GROWTH AND DEVELOPMENT OF FIRST YEAR MISCANTHUS GIGANTEUS DEPENDING ON HYDROTHERMAL CONDITIONS

2017 ◽  
pp. 12-18 ◽  
Author(s):  
V.A. Gushchina ◽  
◽  
E.N Borisova ◽  
Keyword(s):  
Growth And Development ◽  
First Year ◽  
Hydrothermal Conditions ◽  
Miscanthus Giganteus

scholarly journals THE KEY ASPECTS OF THE PRODUCTION PROCESS OF MYSCANTHUS GIGANTEUS UNDER THE CONDITIONS OF THE MIDDLE VOLGA REGION

2021 ◽  
pp. 43-50
Author(s):  
В.А. Гущина ◽  
А.А. Володькин ◽  
Н.И. Остробородова ◽  
А.С. Лыкова
Keyword(s):  
Maximum Yield ◽  
First Year ◽  
Hydrothermal Conditions ◽  
Middle Volga Region ◽  
Perennial Plant ◽  
Net Productivity ◽  
Miscanthus Giganteus ◽  
Urgent Task ◽  
Key Aspects ◽  
Ground Mass

В настоящее время актуальной задачей является поиск экологически безопасных и экономически доступных источников энергии для многоцелевого использования. Одним из таких ресурсов является многолетнее растение из семейства Мятликовые – мискантус гигантский (Miscanthus giganteus), который отличается значительным нарастанием надземной массы по С4-фотосинтезу, но не может реализовать свои потенциальные возможности как культура с высокими темпами фотосинтетической деятельности, поскольку в год посадки слабо конкурирует с сорняками. Поэтому изучали способы борьбы с сорным компонентом в агроценозе мискантуса на светло-серой почве коллекционного участка ФГБОУ ВО Пензенский ГАУ. В годы проведения исследований, характеризующихся различными гидротермическими условиями (ГТК 0,64-1,29), установлено, что гербициды системного действия Балерина и Магнум по фону Торнадо 500 способствуют увеличению площади листовой поверхности мискантуса в первый год жизни до 18,36…19,09 тыс. м2/га, фотосинтетического потенциала до 496,1…508,7 тыс. м2∙сут./га. Максимальные показатели чистой продуктивности фотосинтеза 0,62…0,85 г/м2∙сут. отмечены в конце июня. За счет двукратной химической прополки снижение засоренности ведет к получению максимальной урожайности надземной массы 8,92…9,09 т/га. Наибольший сбор сухой массы 2,13…2,97 т/га получен при использовании Торнадо 500 в сочетании с гербицидами Балерина и Магнум. Currently, an urgent task is to find environmentally friendly and economically accessible energy sources for multi-purpose use. One such resource is a perennial plant from the bluegrass family, Miscanthus giganteus, which has a significant increase in above-ground mass by C4-photosynthesis, but cannot realize its potential as a crop with high rates of photosynthetic activity, because in the year of planting it competes poorly with weeds. Therefore, we studied ways to control the weed component in the agrocenosis of miscanthus on the light gray soil of the collection area of Penza State Agrarian University. In the years of the research, characterized by different hydrothermal conditions (HTC 0.64-1.29), it was found that the herbicides of systemic action Balerina and Magnum in the background of Tornado 500 contribute to an increase in the leaf area of miscanthus in the first year up to 18.36...19.09 thousand m2/ha, in the photosynthetic potential to 496.1...508.7 thousand m2∙day/ha. The maximum values of net productivity of photosynthesis (0.62...0.85 g/m2∙day) were observed at the end of June. Due to the double chemical weeding the decrease of weeds leads to the maximum yield of above-ground mass - 8.92...9.09 t/ha. The highest dry matter yield of 2.13...2.97 t/ha was obtained using the Tornado 500 in combination with the herbicides Balerina and Magnum.

GROWTH AND DEVELOPMENT OF NEGRO INFANTS

PEDIATRICS ◽  
1955 ◽  
Vol 16 (1) ◽  
pp. 24-30
Author(s):  
Roland B. Scott ◽  
Angella D. Ferguson ◽  
Melvin E. Jenkins ◽  
Fred F. Cutter
Keyword(s):  
Environmental Factors ◽  
Private Practice ◽  
Growth And Development ◽  
First Year ◽  
Daily Care ◽  
Patterns Of Behavior ◽  
First Year Of Life

The time of occurrence of 12 neuromuscular patterns of behavior in the development of 2 groups of Negro infants from different socio-economic levels during the first year of life is presented. The Negro infants from the clinic showed acceleration over the Negro infants from private practice in their development from the 8th to the 35th week of life, after which time, the development of the 2 groups was essentially the same. The Negro infants as a group showed acceleration in their development when compared with a group of white infants studied in a similar manner by Aldrich except in 2 patterns, "smiling" and "vocalization." A marked similarity was noted during the first 30 weeks of life in the development of the white and Negro infants from private practice whose socio-economic backgrounds were substantially similar. The differences and similarities observed in the neuromuscular behavior in the 3 groups studied may be attributed mainly to environmental factors. The observed acceleration in the Negro infants is apparently an expression of greater permissiveness in daily care as practiced by the mothers or mother substitutes in the lower socio-economic classes.

scholarly journals A Field Study of Brine Drainage and Oil Entrainment in First-Year Sea Ice

1979 ◽  
Vol 22 (88) ◽  
pp. 473-502 ◽  
Author(s):  
Seelye Martin
Keyword(s):  
Sea Ice ◽  
Growth And Development ◽  
Salt Transport ◽  
First Year ◽  
Field Observations ◽  
Melt Pond ◽  
Ice Surface ◽  
Melt Ponds ◽  
Brine Channel ◽  
Horizontal Layers

AbstractFrom field observations this paper describes the growth and development of first-year sea ice and its interaction with petroleum. In particular, when sea ice initially forms, there is an upward salt transport so that the ice surface has a highly saline layer, regardless of whether the initial ice is frazil, columnar, or slush ice. When the ice warms in the spring, because of the eutectic condition, the surface salt liquifies and drains through the ice, leading to the formation of top-to-bottom brine channels and void spaces in the upper part of the ice. If oil is released beneath winter ice, then the oil becomes entrained in thin lenses within the ice. In the spring, this oil flows up to the surface through the newly-opened brine channels and distributes itself within the brine-channel feeder systems, on the ice surface, and in horizontal layers in the upper part of the ice. The paper shows that these layers probably form from the interaction of the brine drainage with the percolation of melt water from surface snow down into the ice and the rise of the oil from below. Finally in the summer, the oil on the surface leads to melt-pond formation. The solar energy absorbed by the oil on the surface of these melt ponds eventually causes the melt pond to melt through the ice, and the oil is again released into the ocean.

scholarly journals Anemia in relation to body mass index among female students of North Kerala: a pilot study

2018 ◽  
Vol 6 (11) ◽  
pp. 3607
Author(s):  
Veena Thamban ◽  
Kavana G. Venkatappa ◽  
Swarnalatha P. K. ◽  
Sparshadeep E. M.
Keyword(s):  
Body Mass Index ◽  
Pilot Study ◽  
Body Mass ◽  
Growth And Development ◽  
Mean Value ◽  
Normal Weight ◽  
Female Students ◽  
First Year ◽  
Nutrition And Health ◽  
Larger Sample

Background: Anemia among women causes many serious health problems and is pervasive in developing country. Many research studies have documented that malnutrition affects body growth and development, especially during the crucial period of adolescence. The association between anemia and body mass index (BMI) is a measure of nutrition and health status of adults. Aim was to study the association between anemia and BMI among female students.Methods: An observational study was conducted among first year medical and dental female students (n=109) aged 18-20years. Hemoglobin (Hb) levels (g/dL) by Sahli’s hemoglobinometer and BMI (kg/m2) were estimated. Anemia was defined as Hb content <12g/dL. Subjects were classified by BMI categories as underweight (BMI <18.5kg/m2), normal weight (BMI:18.5-24.99kg/m2), overweight (BMI ≥25kg/m2) and obesity (BMI ≥30kg/m2) according to WHO. Then the relation between anemia and BMI were statistically analyzed.Results: Overall, 48.62% female students were anemic. Of which 43.4% were underweight, 22.6% normal weight and 34.5% were above normal weight (over weight and obese). Mean value of hemoglobin was significantly decreased in underweight and overweight compared to normal weight (p<0.001). Anemia was significantly associated with BMI (χ2 =46.48, p=0.000).Conclusions: The study concludes the occurrence of anemia in both undernourished and over-nourished individuals which were significantly associated. Further studies are needed with larger sample size to document the factors that may be associated with anemia in females.

Growth and Development of Bigroot Morningglory (Ipomoea pandurata)

1991 ◽  
Vol 5 (4) ◽  
pp. 805-810 ◽  
Author(s):  
Michael J. Horak ◽  
Loyd M. Wax
Keyword(s):  
Root Growth ◽  
Growth And Development ◽  
Dry Weight ◽  
First Year ◽  
Growing Degree Days ◽  
Degree Days ◽  
Root:Shoot Ratio ◽  
Shoot Dry Weight ◽  
Second Year ◽  
Final Harvest

Growth and development of bigroot morningglory was observed and quantified. Emergence occurred 75 ± 5 growing degree days (GDD) after seeding. Flower and seed production began 630 ± 20 GDD after emergence and continued until the first frost killed the shoots. Seedlings needed approximately 460 GDD of growth to become perennial. In the second year of growth, plants emerged in early May and flowered within 425 ± 50 GDD. Shoot dry weight accumulation in first-year plants was 3.5 g for the first 600 GDD after which a fifteenfold increase in dry weight occurred. Root growth followed the same pattern, however the large increase in dry weight occurred approximately 300 GDD later than that of the shoots. The root:shoot ratio was 0.2 to 0.3 for the first 900 GDD and increased to greater than 1.0 by the final harvest.

scholarly journals Methane Yield Potential of Miscanthus (Miscanthus × giganteus (Greef et Deuter)) Established under Maize (Zea mays L.)

Energies ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4680 ◽  
Author(s):  
Moritz von Cossel ◽  
Anja Mangold ◽  
Yasir Iqbal ◽  
Iris Lewandowski
Keyword(s):  
Dry Matter ◽  
Zea Mays L ◽  
Methane Yield ◽  
Yield Potential ◽  
First Year ◽  
Biotic And Abiotic Stress ◽  
Yield Gap ◽  
Fiber Analysis ◽  
Miscanthus Giganteus ◽  
The Mean

This study reports on the effects of two rhizome-based establishment procedures ‘miscanthus under maize’ (MUM) and ‘reference’ (REF) on the methane yield per hectare (MYH) of miscanthus in a field trial in southwest Germany. The dry matter yield (DMY) of aboveground biomass was determined each year in autumn over four years (2016–2019). A biogas batch experiment and a fiber analysis were conducted using plant samples from 2016–2018. Overall, MUM outperformed REF due to a high MYH of maize in 2016 (7211 m3N CH4 ha−1). The MYH of miscanthus in MUM was significantly lower compared to REF in 2016 and 2017 due to a lower DMY. Earlier maturation of miscanthus in MUM caused higher ash and lignin contents compared with REF. However, the mean substrate-specific methane yield of miscanthus was similar across the treatments (281.2 and 276.2 lN kg−1 volatile solid−1). Non-significant differences in MYH 2018 (1624 and 1957 m3N CH4 ha−1) and in DMY 2019 (15.6 and 21.7 Mg ha−1) between MUM and REF indicate, that MUM recovered from biotic and abiotic stress during 2016. Consequently, MUM could be a promising approach to close the methane yield gap of miscanthus cultivation in the first year of establishment.

scholarly journals Influence of increasing nickel content in soil on Miscanthus × giganteus Greef and Deu. Yielding and on the content of nickel in above-ground biomass / Wpływ wzrastającej zawartości niklu w glebie na plonowanie Miscanthus x giganteus Greef i Deu. i zawartość niklu w nadziemnej biomasie

2015 ◽  
Vol 41 (1) ◽  
pp. 72-79
Author(s):  
Maciej Bosiacki
Keyword(s):  
Nickel Content ◽  
Mineral Soil ◽  
Nickel Sulfate ◽  
First Year ◽  
Above Ground Biomass ◽  
Miscanthus X Giganteus ◽  
Miscanthus Giganteus ◽  
High Moor ◽  
High Nickel ◽  
High Moor Peat

Abstract The aim of the research conducted in a 2-year pot experiment in an unheated plastic tunnel was to determine suitability of Miscanthus × giganteus for phytoextraction of nickel from soil as well as to assess tolerance of this species on increasing concentrations of this metal in soil. Pots were filled with mineral soil (sand) and a mixture of soil with high-moor peat and three levels of nickel were introduced, i.e. 75 mg dm-3, 150 mg dm-3 and 600 mg dm-3 and the control combinations used substrates without the addition of nickel. Nickel was introduced only in the first year of the experiment in the form of nickel sulfate (NiSO4 · 6H2O). Miscanthus × giganteus accumulated a considerable amount of nickel in biomass. Miscanthus × giganteus growing in contaminated mineral soil turned out to be a species tolerant to high nickel concentrations

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