scholarly journals Studies with Urochloa brizantha cv. MG5 Vitória in Okinawa, Japan: Vegetative propagation and a tractor tyre stress test

2021 ◽  
Vol 9 (2) ◽  
pp. 243-248
Author(s):  
Takashi Hanagasaki
Keyword(s):  
Stress Test ◽  
Ground Level ◽  
Good Growth ◽  
Production Potential ◽  
High Quality ◽  
Forage Crop ◽  
Chloris Gayana ◽  
Reproductive Rates ◽  
Urochloa Brizantha ◽  
High Quality Seed

Feeding of high quality grass is critical to ensure breeding cows remain healthy with high reproductive rates and growing and fattening cattle achieve good growth rates. The Brazilian grass cultivar, Urochloa brizantha cv. MG5 Vitória, is highly nutritious and is known for its drought tolerance. In view of its low seed production potential in subtropical Japan and of phytosanitary problems (contamination with soil particles) of imported seed, a study was conducted in Okinawa to assess 2 methods of propagating this cultivar vegetatively. Cutting stems (culms) at about 10 cm from ground level and inserting them 3 cm into a 50:50 compost:soil mixture produced a 77% success rate in terms of rooted plantlets in a glasshouse compared with 67% for cutting the culm at 3 nodes from the base, subsequently allowing 2 weeks for adventitious roots to form on the lowest node, then cutting below the node where roots emerged and planting the rooted propagule in the same mixture. It seems that the simple process of cutting stems at about 10 cm from ground level and inserting them into a suitable mixture of soil and compost should result in an acceptable yield of plantlets for establishment of an MG5 forage crop. However, locating a source of high-quality seed free of phytosanitary problems seed would seem to be a better solution to increase the areas in Okinawa planted to MG5.In the tractor tyre stress trial conducted over 2 years, an MG5 forage crop established from seed showed depressed yields on the treatment subjected to tractor tyre pressure but performed as well as Chloris gayana, a much-used forage grass in Okinawa.

The invisible BNR plant provides high quality effluent and recreational area for densely populated urban area

2009 ◽  
Vol 4 (1) ◽  
Author(s):  
E. Choi ◽  
Z. Yun ◽  
K.S. Min
Keyword(s):  
Nutrient Removal ◽  
Operating Temperature ◽  
Treatment Plant ◽  
Ground Level ◽  
Biological Nutrient Removal ◽  
High Quality ◽  
Sand Filter ◽  
Sport Facilities ◽  
Final Effluent ◽  
Removal System

In a densely populated area, a large wastewater treatment plant (WWTP) has been constructed in the underground. The plant is practically “invisible” to visitors and neighbours, and the ground level is used as a park and sport facilities in order to avoid the “not in my backyard” phenomenon. The WWTP has a 5-stage biological nutrient removal system utilizing the denitrifying PAO (dPAO) with a step feed in order to treat the weak sewage with higher nutrient removal requirement. Although the underground installation could be expected to increase plant operating temperature, the temperature increase was only 1°C. The polished final effluent from a sand filter produced average TN and TP concentrations of 5.11 mg/L and 0.91 mg/L, respectively with SS concentrations of 0.61 mg/L, indicating that the dPAO system combined with sand filter effectively produced a high quality effluent.

scholarly journals Seed research for improved technologies

1998 ◽  
Vol 55 (spe) ◽  
pp. 19-26 ◽  
Author(s):  
R.J. Bino ◽  
H. Jalink ◽  
M.O. Oluoch ◽  
S.P.C. Groot
Keyword(s):  
Cell Cycle ◽  
Cell Proliferation ◽  
Quality Assurance ◽  
Seed Germination ◽  
Seed Quality ◽  
Molecular Level ◽  
Control Mechanisms ◽  
High Quality ◽  
Production Chain ◽  
High Quality Seed

The production of high-quality seed is the basis for a durable a profitable agriculture. After production, seed is processed, conditioned, stored, shipped and germinated. For quality assurance, seed quality has to be controlled at all steps of the production chain. Seed functioning is accompanied by programmed transitions from cell proliferation to quiescence upon maturation and from quiescence to reinitiation of cellular metabolism upon imbibition. Despite the obvious importance of these control mechanisms, very little information is available at the molecular level concerning those elements that regulate seed germination. In the present study, the induction of cell cycle activity and the regulation of ß-tubulin expression is related to the water content and other physical properties of the seed.

scholarly journals Improving the Mechanization of High-Quality Seed Production

2018 ◽  
Author(s):  
Vladimir Ivanovich Orobinsky ◽  
Alexander Pavlovich Tarasenko ◽  
Aleksey Mikhailovich Gievsky ◽  
Aleksey Viktorovich Chernyshov ◽  
Ivan Vasilyevich Baskhakov
Keyword(s):  
Seed Production ◽  
High Quality ◽  
High Quality Seed

scholarly journals DEVELOPMENT OF FIELD CROP SEED PRODUCTION IN RUSSIA

2020 ◽  
Vol 8 (3) ◽  
pp. 81-85
Author(s):  
Artem Lukomec
Keyword(s):  
Food Security ◽  
Seed Production ◽  
Production System ◽  
Selection Process ◽  
Biological Properties ◽  
Field Crop ◽  
High Quality ◽  
Main Condition ◽  
Field Crops ◽  
High Quality Seed

Seed production of field crops plays a key role in ensuring food security of the country and is a continuation of the selection process, a necessary link for the development and maintenance of the variety. In seed production, the main object is a variety that is genetically close to each other a certain group of plants, homogeneous in morphological and biological properties. The finish of high-quality seed production is seeds with good varietal and sowing qualities. The main condition for effective production of field crops is a well-established seed production system, which is a set of functionally interconnected structures engaged in the production of elite and reproductive seeds. Seed production of field crops solves two main tasks: variety exchange and variety renewal. When a variety is changed, one zoned variety is replaced by another with more valuable economic characteristics. During variety renewal, varietal seeds in farms are replaced with seeds of the same varieties, but of higher reproductions. Usually, seeds for cereals and legumes are updated every 3-4 years, for millet - every 2 years, for sunflower - annually. The main goal of seed production of field crops is to maintain a set of characteristics of the variety, its most valuable qualities and economic indicators.

Evaluation of spring soft wheat varieties and zonal features of seed production in the Altai Territory

2021 ◽  
pp. 54-71
Author(s):  
S. V. Zharkova ◽  
E. I. Dvornikova
Keyword(s):  
Seed Production ◽  
Field Studies ◽  
Quality Parameters ◽  
Scientific Data ◽  
Soft Wheat ◽  
Forage Crops ◽  
High Quality ◽  
Wheat Varieties ◽  
Spring Soft Wheat ◽  
High Quality Seed

One of the leading grain crops in Russia is spring wheat. This is a strategic food crop of our country; it is also an important component in the structure of forage crops for monogastric animals, such as pigs and poultry. The purpose of the research was to evaluate spring soft wheat varieties of different maturity groups in order to identify genotypes as the starting material for obtaining varieties adapted to the cultivation zones, and to determine the areas optimal for the production of grain for seed purposes with high quality indicators. Field studies have been carried out in three ecologically different zones: the Priobskaya zone, the Prialtaiskaya zone, and the Prisalairskaya zone. Under the conditions of the Altai Territory, genetic sources of spring soft wheat have been identifi ed for different soil and climatic parameters of the study zones, the use of which will allow obtaining high-yielding varieties with high quality grain for specific cultivation conditions. The variability of the indicators of the characteristics of varieties in three ecologically different zones has been determined. The indicators of adaptability and stability of spring soft wheat varieties in different zones of cultivation have been determined. The optimal zones for conducting breeding work and seed production of varieties have been identifi ed. New scientific data on the quality parameters of seed grain in various agro-climatic zones of the Altai Territory have been obtained. The share of the contribution of the factors “variety”, “year”, “environment” to the variability of grain quality characteristics has been established. The economic efficiency of cultivating varieties of spring soft wheat for the production of high-quality seed grain has been determined.

scholarly journals A SUMMER FIELD GRAFTING TECHNIQUE FOR PINE

1959 ◽  
Vol 35 (1) ◽  
pp. 30-35
Author(s):  
D. P. Fowler
Keyword(s):  
Growing Season ◽  
Early Summer ◽  
High Quality ◽  
Grafting Technique ◽  
High Quality Seed ◽  
Pine Species

Field grafting is an important tool of tree breeders and other foresters concerned with the production of high quality seed for forestry purposes. Field grafting of many pines is carried out in the early summer during a period which is usually crowded with pollination and nursery work. This paper describes a summer grafting technique by which it is possible to successfully field graft pine species late in the growing season using current year's growth for scion and stock material.

scholarly journals The potential for production of high quality seed potatoes in Tierra del Fuego Island, Argentina

1999 ◽  
Vol 42 (1) ◽  
pp. 9-23 ◽  
Author(s):  
D. O. Caldiz ◽  
O. H. Caso ◽  
G. Vater ◽  
L. V. Fernandez
Keyword(s):  
Tierra Del Fuego ◽  
High Quality ◽  
Seed Potatoes ◽  
High Quality Seed
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