scholarly journals Unconscious selection drove seed enlargement in vegetable crops

2017 ◽  
Vol 1 (2) ◽  
pp. 64-72 ◽  
Author(s):  
Thomas A. Kluyver ◽  
Glynis Jones ◽  
Benoît Pujol ◽  
Christopher Bennett ◽  
Emily J. Mockford ◽  
...  
Keyword(s):  
Vegetable Crops ◽  
Unconscious Selection

Thermal/electric energy generation and CO2 production for greenhouse facilities

2019 ◽  
Vol 2 (3) ◽  
pp. 141-151
Author(s):  
O. E. Gnezdova ◽  
E. S. Chugunkova
Keyword(s):  
Carbon Dioxide ◽  
Power Distribution ◽  
Power Plants ◽  
Electric Energy ◽  
Electricity Consumption ◽  
Vegetable Crops ◽  
Carbon Dioxide Injection ◽  
Electricity Rates ◽  
Traditional Patterns ◽  
Generation Power

Introduction: greenhouses need microclimate control systems to grow agricultural crops. The method of carbon dioxide injection, which is currently used by agricultural companies, causes particular problems. Co-generation power plants may boost the greenhouse efficiency, as they are capable of producing electric energy, heat and cold, as well as carbon dioxide designated for greenhouse plants.Methods: the co-authors provide their estimates of the future gas/electricity rates growth in the short term; they have made a breakdown of the costs of greenhouse products, and they have also compiled the diagrams describing electricity consumption in case of traditional and non-traditional patterns of power supply; they also provide a power distribution pattern typical for greenhouse businesses, as well as the structure and the principle of operation of a co-generation unit used by a greenhouse facility.Results and discussion: the co-authors highlight the strengths of co-generation units used by greenhouse facilities. They have also identified the biological features of carbon dioxide generation and consumption, and they have listed the consequences of using carbon dioxide to enrich vegetable crops.Conclusion: the co-authors have formulated the expediency of using co-generation power plants as part of power generation facilities that serve greenhouses.

Bok Choy, an Asian Leafy Green Vegetable Emerging in Florida

EDIS ◽  
2019 ◽  
Vol 2019 (6) ◽  
pp. 5
Author(s):  
Hai Liu ◽  
Guodong Liu
Keyword(s):  
Graduate Students ◽  
Crop Production ◽  
Health Benefits ◽  
Extension Agents ◽  
Vegetable Crops ◽  
Green Vegetable ◽  
General Overview

Asian vegetable crops are rapidly expanding in Florida in the last decade due to their health benefits combined with their high profitability. These crops can help increase vegetable growers’ income and diversify Florida’s crop production, and they are new to most Floridians. This new 5-page article provides a general overview of bok choy for vegetable growers, crop consultants, certified crop advisors, Extension agents, and graduate students. Written by Hai Liu and Guodong Liu and published by the UF/IFAS Horticultural Sciences Department.https://edis.ifas.ufl.edu/hs1337

Specific composition and structure of population phytopathogens of vegetable crops

2019 ◽  
Vol 326 (3) ◽  
pp. 76-78
Author(s):  
V.L. Nalobova ◽  
◽  
N.S. Opimah ◽  
M.V. Nalobova ◽  
I.V. Haponenka ◽  
...  
Keyword(s):  
Vegetable Crops ◽  
Specific Composition ◽  
Composition And Structure ◽  
Structure Of Population

Establishment theoretical of recommendation fertilization guide of vegetable crops in Algeria: concept and validation

2015 ◽  
Vol 5 (1) ◽  
pp. 606-620
Author(s):  
Mahtali Sbih ◽  
Zoubeir BENSID ◽  
Zohra BOUNOUARA ◽  
Fouad DJAIZ ◽  
Youcef FERRAG
Keyword(s):  
Soil Fertility ◽  
Field Experiments ◽  
Soil Analysis ◽  
Critical Value ◽  
Yield Response ◽  
Published Data ◽  
Vegetable Crops ◽  
Fertilizer Recommendation ◽  
Continuous Models ◽  
Poor Soil

The goal of fertilization is to meet the nutritional needs of plants by completing the supply of soil nutrients in an economically profitable and environmentally friendly. Achieving on-farm optimum economic crop yields of marketable quality with minimum adverse environmental impact requires close attention to fertilization guide. The recommendations seek to do this by ensuring that the available supply of plant nutrients in soil is judiciously supplemented by additions of nutrients in fertilizers. The objective is that crops must have an adequate supply of nutrients, and many crops show large and very profitable increases in yield from the correct use of fertilizers to supply nutrients. The main objective of this work is to establishing a reference guide of fertilization of vegetable crops and cereal in Algeria. To meet this objective, we have processes in two steps: 1) Establishment of theoretical fertilizer recommendation from international guide of crop fertilization; 2) Validation of these developed theoretical fertilizer recommendation by trials in the fields. Sixteen fertilization guides of vegetable crops from the Canadian provinces (5 guides), USA (10 guides) and countries of northern Europe England (1 guide). Generally, the rating of these recommendation is ranging from poor soil to soil exceedingly rich; however, the numbers of fertility classes are very different. Indeed, Quebec Ontario, Minnesota, Wisconsin New England, Maryland and Kentucky and Florida guides are subdivided into 5 fertility classes, ranging from poor soil to soil exceedingly rich. The recommendation of New Brunswick and Manitoba contain six classes. The recommendation of Michigan, Nova Scotia and England contain 10 and 7 fertility classes respectively. The recommendation fertilizer of New York and New Jersey have 3classes. Unlike the systems of fertilization recommendation mentioned above, the recommendation fertilizer of Pennsylvania is based on continuous models of P, K and contains 34 classes for P and 22 classes K. Then we standardized the P soil analysis with conversion equations (Olsen method) and units of measurement (kg/ha, mg/kg…).Following this procedure we transformed discontinued systems of fertility classes in to continuous models to facilitate comparison between the different fertilization recommendation models in one hand, in other hand to obtain critical value (CV).Finally, we used statistics of the conditional expectation in order to generate the theoretical recommendation fertilization guide of fertilization with 7 fertility classes (VL, L, M, MH, OP, H and VH). The next step was calibrating soil tests against yield responses to applied nutrient in field experiments. A database (not published data) from agriculture and agri-food Canada, were used. Production of pumpkin responded positively and significantly to P or K soil fertility levels, increases being observed with P more often than with K. According to the Cate-Nelson methods, the critical value of Olsen-P in the top 20 cm of soil was about 25 mg/kg: at values of greater than or equal to 25 mg/kg, crops achieved about 80% of their maximal yield in the absence of fertilizer application. The CV of K in soil for this crop was about 140 mg/kg. The CV found was very close to this generated by the theoretical method for recommendation of fertilization guide. Finally, we used the procedure of Cope and Rouse in both sides of the CV in order to make subdivisions of different groups of soil fertility. One calibrates the soil-test value against yield response to tile nutrient to predict fertilizer requirement.

Итоги селекционно-семеноводческой работы с редечными культурами на Дальнем Востоке

2018 ◽  
Author(s):  
V  Leunov ◽  
Y  Mikheev
Keyword(s):  
Far East ◽  
Seed Plants ◽  
Vegetable Crops ◽  
Soil Pathogens ◽  
Climate Conditions ◽  
State Register ◽  
Golden Horn ◽  
The Far East ◽  
High Yielding Varieties ◽  
Technological Methods

Расширение ассортимента потребляемых овощных культур – одна из основных задач в селекционно-семеноводческой работе с редечными культурами на Дальнем Востоке. В статье приводятся данные о селекции редечных культур (лобы, дайкона, редьки и др.) на Приморской овощной опытной станции. В результате проведения многолетних исследований и реализации ряда научных программ был создан новый исходный материал для селекции. В настоящем материале также подведены итоги актуальных направлений в селекции редечных культур в условиях муссонного климата. Селекционно-семеноводческие исследования в условиях климата Дальнего Востока с использованием индивидуального, а также индивидуально-семейственного методов отбора, разработка и внедрение технологических приемов первичного и сортового семеноводства обеспечили создание перспективного селекционного материала. Выделены ценные генисточники для создания новых сортообразцов китайского, японского и европейского подвидов редьки с высокими иммунологическими, продуктивными и товарными качествами, повышенными биохимическими показателями, высокой устойчивостью к переувлажнению почвы и возбудителями болезней. Созданы и включены в Госреестр РФ высокопродуктивные сорта китайского подвида редьки (лоба) Малиновый шар и Золотой рог, европейского подвида зимней редьки Ночная красавица, устойчивые к переувлажнению почвы и цветушности, бактериальным заболеваниям. В результате более чем двадцатилетних исследований изучены морфологические и биологические особенности формирования семенных растений редьки, использование эффективных элементов отбора в сочетании с агротехническими приемами возделывания. Усовершенствованы технологические методы первичного и товарного семеноводства редьки, выделены благоприятные агроклиматические зоны выращивания семенных растений, способствующие получению высококачественных семян при сохранении ими высоких биологических и хозяйственных признаков. Для условий муссонного климата Дальнего Востока внедрена в производство система первичного и сортового семеноводства редьки с использованием пересадочной и беспересадочной технологии выращивания. Результаты работы открывают дорогу к созданию новых высокоурожайных российских сортов и гибридов редечных культур.Expansion of the range of consumption of vegetable crops is one of the main tasks in the breeding and seed work with regions cultures in the Far East. The article presents data on the breeding radishes cultures (loba, daikon, radish, etc.) on the Maritime vegetable experiment station. As a result of years of research and implementation of a number of research programs has created a new source material for breeding. In this paper also summarize the current trends in the selection of radishes cultures in conditions of monsoonal climate. Breeding and seed research in the climate conditions of the Far East with the use of individual and individual and family methods of selection, development and implementation of technological methods of primary and varietal seed production ensured the development of advanced breeding material. Allocated valuable genitocracy to create new varieties of Chinese, Japanese and European subspecies of radishes cultures with high immunological, productive and commercial qualities, elevated biochemical parameters, high resistance to waterlogging and soil pathogens. Created and included in the state register of the Russian Federation high-yielding varieties of Chinese subspecies of radish (loba) a Crimson ball and the Golden horn, the European subspecies winter radish Night beauty, resistant to waterlogging of the soil and bolting and bacterial diseases. As a result of more than twenty years studied the morphological and biological peculiarities of formation of seed plants of radishes, the use of effective elements of selection in combination with agrotechnical methods of cultivation. Improved technological methods of primary and commercial seed radishes allocated to favorable agro-climatic zones of cultivation of seed plants, which would produce high-quality seeds while preserving their high biological and economic characteristics. For the conditions of monsoon climate of the Far East implemented in the production system of primary and varietal seed radishes using transit and non-stop growing technologies. The results of this work open the way to the creation of new high-yielding Russian varieties and hybrids of radishes cultures.

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