scholarly journals Preliminary evalution of artificial snow cover as a method for the protection of the vine during winter in Québec

OENO One ◽  
2000 ◽  
Vol 34 (4) ◽  
pp. 155
Author(s):  
Yvon Jolivet ◽  
Jean-Marie Dubois
Keyword(s):  
Snow Cover ◽  
Root Zone ◽  
Research Work ◽  
Ambient Air ◽  
Cold Season ◽  
Climatic Conditions ◽  
Cold Temperatures ◽  
Random Character ◽  
Natural Snow

<p style="text-align: justify;">The sensitivity of the vine to cold temperatures makes it a high risk crop in Québec. Winter colds during January and February can reach through the course of several days - 30° C and consequently the intense cold can damage the buds. However, during this same period, the snow cover normally present on the ground insures a certain protection to the aerial portions of the vine by insulating them from the intense cold air dominating the surface. Moreover, given the random character of the snowfall regime, vine growers must in addition ridge the vine stocks to protect them from the cold. This research work discusses artificial snow making as a method of protection for the vine and addresses one of the major problems faced by this type of culture under extreme climatic conditions.</p><p style="text-align: justify;">Temperature measurements were recorded over four experimental plots during the cold season in a vineyard in Québec. A plot covered by artificial snow for protection against the winter cold was compared with three others, one with a natural snow cover, one with a leaf cover and covered by natural snow and one covered by natural snow with fine ice crusts following snowfalls. Results show that during the major colds of January and February, the vine shoots located at 30 cm from the ground and protected by artificial snow conserved much higher negative minimum temperatures, by as much as 23°C compared to the vine shoots located at the same height on the other plots. Results also reveal that a snow cover of 15 to 20 cm is sufficient to insulate entirely the vine shoots from the ambient air. Hence, the use of artificial snow cover is an efficient method of protection against the cold. However, when using artificial snow covering in the fall while the natural snow cover is still absent, non crystallized water penetrates the ground down to the root zone through percolation and reduces the temperature by approximately 3°C down to a depth of 30 cm. In the same manner, in relation to traditional methods of protection, during spring the early thawing of the snow cover at the center of the ridges leaves the vine shoots without protection and exposes them to late frosts.</p><p style="text-align: justify;">Other results relating to the use of artificial snow for covering stocks with regards to bud mortality rate and fruit yield in the fall should permit the evaluation of the real impact of this method on stock productivity and the quality of production.</p>

Evaluation of the productivity of the hybrid vine Seyval blanc in function of several types of protection against frost in Quebec

OENO One ◽  
2003 ◽  
Vol 37 (1) ◽  
pp. 1
Author(s):  
T. Telebak ◽  
Yvon Jolivet ◽  
Jean-Marie Dubois
Keyword(s):  
Mortality Rate ◽  
Snow Cover ◽  
Sugar Content ◽  
Winter Season ◽  
Ambient Air ◽  
Bare Soil ◽  
Climatic Conditions ◽  
The Other ◽  
Potential Yield ◽  
Natural Snow

<p style="text-align: justify;">In Quebec, winter frost is one of the determining factors influencing vine survival and yield. To evaluate the quality of the different types of winter protection, ground temperature data under different covers (ground knolls, leaf mounds, carried over snow and natural snow) and ambient air temperatures were recorded. Results show that the Seyval blanc, if not protected against winter frost, can sustain quite serious damages when the air temperature reaches -30 °C. Ridging, leaf covering and the natural snow cover as well as carried over snow have a positive effect on ground temperatures, since over the site without protection, frost penetrated down to a depth of 50 cm. However, it seems that the root System did not sustain significant damages from the ground frost since regrowth occurred in the Spring. Because of its direct exposure to radiation and surface climatic conditions, bare soil warms up more quickly in the Spring compared to the other sites benefiting from protection. Results also indicate that the mortality rate of the vine stock fruit buds without protection is nearly 100 % compared to the protected vine stocks with a fruit bud mortality rate varying from 22.5 to 35.8 %. The protected vine stocks, regardless of the type of protection used, had satislactory yields from 7.2 t/ha to 24.4 t/ha. On the other hand, the raisin yield of the vine stocks without any winter protection is null. The best raisin yields were obtained over sites where vine stocks were protected by ridging (40 cm of earth), while the vine stocks protected by leaf covering showed an average yield. We also observed that when vine stock leaf covering is coupled with lodged vine shoots, raisin yields are higher than when the vine shoots are erect. However, in both cases, potential yield per hectare is satisfactory. Hence, the lodging of vine shoots becomes a useless operation. The vine stocks protected by natural snow as well as by leaf covering (30 cm + carried over snow and lodged vine shoots) gave the fruit with the highest sugar content. Snow is also an excellent insulator because a 37 cm high snow cover permitted the survival of the vine stocks protected by snow even when the temperature reached -30 °C. The only problem still posing a threat is snow cover variability during the winter season. A reduced snow cover, coupled with temperature conditions under the threshold of tolerance of the vine to cold, could not insure satisfactory protection ol the fruit buds.</p>

scholarly journals Formation and evolution of melt holes on vine-shoots during the winter in Quebec

OENO One ◽  
2002 ◽  
Vol 36 (3) ◽  
pp. 143
Author(s):  
G. Bertrand Carrière ◽  
Yvon Jolivet ◽  
Jean-Marie Dubois
Keyword(s):  
Snow Cover ◽  
Empty Space ◽  
Climatic Conditions ◽  
Primary Role ◽  
Large Variability ◽  
Cold Temperatures ◽  
Cold Air ◽  
Solar Radiation Intensity ◽  
Natural Snow ◽  
Protective Methods

<p style="text-align: justify;">Vine cultivation in Quebec is confronted with the problem of an unfavorable climate specially because of winter frost. Over the last few years, artificial snow has been used, at the experimental level, as one of the protective methods implemented during winter at the Sous les Channilles vineyard, in southern Quebec. However, towards the end of January, the increase in solar radiation intensity is instrumental in causing the fonnation of inelt holes along the vine shoots thus reducing the protective effect of the snow cover. According to varying climatic conditions, we show that there are many factors at the origin of the formation and the metamorphoses of melt holes. These melt holes can be fonned by sublimation or fusion of the snow and can sometimes present mixed fonns. Through their presence, they modify the vertical temperature gradients in the snow cover and play a primary rôle in the evolution of snow metamorphoses near the stocks. The formation of melt holes near the vine shoots can also damage the fruit buds submitted to cold temperatures prevailing on the surface. The empty space created near the stocks can permit the infiltration of cold air and, in situations of extreme cold, damages can be sustained by the fruit buds. On the other hand, our observations also show that, when melt holes are covered by snow, a constructive metamorphosis is initiated and the melt holes can fill themselves up through the evolution of internal frost. If the melt holes are not too large, the formation of frost can obstruct the surface orifice and restrict the infiltration of cold air from the exterior within the snow cover. Furthermore, the widening of melt holes early in the spring can cause the premature disappearance of the snow cover in the vine rows and, accordingly, can expose the buds to congelifraction temperatures below the cryotolerance threshold. Artificial snow is more efficient than natural snow in the sense that, since its volumetric mass is normally superior to that of natural snow, the development of melt holes is a lot slower. Accordingly, artificial snow provides more durable protection in the spring. The study of the pro¬ cesses controlling the formation and the evolution of melt holes has also shown the large variability of the snow cover according to local meteorological conditions. Finally, the understanding of the processes at the base of the formation of melt holes sheds new light on the rôle of snow in agriculture.</p>

scholarly journals ANALYSIS OF USING DIFFERENTIATED APPROACH WHEN IRRIGATING AGRICULTURAL CROPS

2020 ◽  
Author(s):  
A. N. Babichev ◽  
◽  
A. A. Babenko ◽  
Keyword(s):  
Growth And Development ◽  
Irrigation System ◽  
Research Work ◽  
Climatic Conditions ◽  
Agricultural Crops ◽  
Critical Periods ◽  
Irrigation Regime ◽  
Agrochemical Properties ◽  
Quality Of Products

Purpose: to analyze the experience of Russian scientists in the field of application of a differentiated approach to agricultural crops irrigation. The overview of research work of domestic scientists on the use of an irrigation system in agriculture, in which the provision of agricultural crops with water to maintain a given level of the minimum water capacity will be carried out during the most critical periods of their growth and development is presented. During irrigation, the timing, frequency, irrigation rates depend on the level of groundwater occurrence, agrochemical properties of soils, weather and climatic conditions, phases of growth and development of crops. The application of a differentiated irrigation regime to maintain a given level of pre-irrigation moisture allows increasing the productivity of agricultural crops, the quality of products obtained while reducing irrigation and watering rates, the number of waterings. Conclusions. The study of the results of research work of domestic scientists in the field of influence of irrigation and the fertilization system on the yield and quality of agricultural products allows concluding that obtaining the planned yields is possible only if irrigation regimes are observed and the level of soil fertility is maintained by applying various fertilizers. The use of a differentiated approach to irrigation while maintaining a given level of pre-irrigation soil moisture during critical periods of crop development allows reducing irrigation water consumption and optimizing irrigation rates and their quantity. The study of a differentiated irrigation regime is promising now and in the near future, taking into account the deteriorating water supply in the territory of our country, associated with a change in weather and climatic conditions.

scholarly journals ПРИНЦИПЫ ПРИРОДОИНТЕГРАЦИИ В ФОРМИРОВАНИИ АРХИТЕКТУРНОЙ СРЕДЫ СОВРЕМЕННЫХ ОБЪЕКТОВ ЗДРАВООХРАНЕНИЯ

World Science ◽  
2019 ◽  
Vol 1 (3(43)) ◽  
pp. 30-35
Author(s):  
Скороходова Алина Валерьевна ◽  
Родик Янина Сергеевна ◽  
Даниленко Евгений Леонидович
Keyword(s):  
Natural Environment ◽  
Research Work ◽  
Climatic Conditions ◽  
Health Facilities ◽  
Favorable Result ◽  
Compositional Structure ◽  
The World ◽  
Architecture And Design ◽  
Functional Purpose

The relevance of health facilities formation taking into account principles of nature integration is substantiated in the article. It is shown that the concept of harmonious interaction with nature gives the best results for treatment and rehabilitation of patients; it gains more popularity and attracts attention of specialists in the field of medicine, architecture and design around the world. On the basis of the research work, several principles of nature integration in formation of architectural environment of health facilities can be distinguished. They depend on functional purpose of architectural objects, compositional structure, climatic conditions, ecosystem and location. It is proved that architectural formation of health facilities harmoniously associated with natural environment directly affects health of patients. In the process of architectural environment formation it is very important to take into account interests of environment users and nature itself, in order to obtain a favorable result of interaction of natural environment and man. Taking into account principles of nature integration in the design of health facilities contributes to improving the quality of medical and rehabilitation institutions environment, raising the level of services provided and harmonizing the environment.

Evaluation of thermal regime of Vitis vinifera L. var. Melon during winter time in Québec

OENO One ◽  
1998 ◽  
Vol 32 (2) ◽  
pp. 51
Author(s):  
Yvon Jolivet ◽  
Jean-Marie Dubois ◽  
Hardy Granberg
Keyword(s):  
Vitis Vinifera ◽  
Snow Cover ◽  
Thermal Regime ◽  
Root Zone ◽  
Complete Removal ◽  
Ambient Air ◽  
Active Management ◽  
Aerial Parts ◽  
Air Temperatures ◽  
Winter Time

<p style="text-align: justify;">The production of wine is a recent endeavour in Québec. In 1996, 95 p. cent of the commercial vineyards were found in the Eastern Townships and Montérégie regions, where climate puts severe constraints on viticulture. Very low winter time temperatures can occur and it is important to match vine hardiness to climate reality. This can be accomplished by plant selection and/or by application of variety of phytoprotective measures.</p><p style="text-align: justify;">Field measurements of the thermal regime of different parts of vines (<em>Vitis vinifera</em> L. var. Melon) are reported here. Intratissular temperatures were recorded semi-continuously using fine (A WG n° 40) thermocouples and datalogger system. Measurements were recorded throughout the winters 1993-1994 in a vineyard near Sherbrooke, Québec. The measurements show that snow is very important factor ameliorating root-zone temperatures. Snow is also very important to keeping the aerial parts of the plant at temperatures well above their winter hardiness. Temperatures of 0°C to 4°C were recordeding snow cover parts of the plants even at ambient air temperatures near -30°C. During cold spells, following periods of melt with complete removal of the snow cover, cooling was notes down to a depth of 60 cm in the soil and the aerial parts of the plants closely followed the air temperatures. By contrast, if the cold front marking the end of the melting event was accompanied by snowfall, such extreme cooling did not occur. Even just a few centimeters of snow had very important thermal effects.</p><p style="text-align: justify;">Our results suggest that noble grapes, which give a more interesting wine, but which are less hardy than their hybrid counterparts, can survive in Québec, provided they remain snow covered. A snow cover of only about 10 cm would suffice to protect the vines. Active management of snow cover conditions by means of snow fences, or even by production of artificial snow, may be useful venues to investigate.</p>

scholarly journals Climate influence on yield and grain quality of triticale varieties in the Volga region

2019 ◽  
pp. 9-14
Author(s):  
Tatiana Alexandrovna Goryanina ◽  
Anatoly Mikhailovich Medvedev
Keyword(s):  
Snow Cover ◽  
Grain Quality ◽  
Central Zone ◽  
Climatic Conditions ◽  
Summer Period ◽  
Winter Triticale ◽  
Yield And Quality ◽  
Excess Moisture ◽  
Winter Crops

  The research was carried out in 2002-2018 on the fields of breeding crop rotation of the Samara research Institute, located in the Central zone of the Samara region. 24 varieties of winter triticale were studied. The aim of the work is to establish the influence of climatic conditions on the yield and quality of triticale grain. During the study period, the trends of climate change were revealed: the increase in air temperature in the spring-summer period (April-June) by 0.23° C per year and during the sowing of winter crops (August-September) by 0.09° C per year. Quality of grain and bread, productivity depend on climatic conditions of vegetation. Excess moisture in the autumn and warm winters contribute to the appearance of rust pustules. Lack of precipitation in the summer period (may-June) was noted in 13 years out of 17 studied (11.4-74.7% of the norm). The yield is significantly influenced by the conditions of vegetation in the spring and summer (SCC April-June) r=0.63 * * ±0.15. The appearance of rust pustules was decisively influenced by the conditions of the autumn period and overwintering. Anti-nutrient substances, 5-alkylresorcinols, to a large extent accumulate at high temperatures in the autumn (r=0.73* * ±0.13) and with prolonged snow cover (r=0.56*±0.18). Indicators of quality of bread improve at sufficient height of a snow cover (r=0,28 ... 0,50*) and long spring-summer vegetation (r=-0,51*...-0,62**), and at a large amount of precipitation during may-June decrease (r=-0,28...-0,46). Analysis of the results indicates the need for stabilization of high-quality grain production in the region to create drought-resistant and precocious varieties of triticale.

scholarly journals GENETIC SOURCES AND NEW SOURCE MATERIAL FOR BREEDING PUMPKINS IN THE LOWER VOLGA REGION

2018 ◽  
pp. 39-43
Author(s):  
T. M. Nikulina ◽  
D. P. Kurunina ◽  
E. S. Maslennikova
Keyword(s):  
Abiotic Factors ◽  
Research Work ◽  
Climatic Conditions ◽  
Lower Volga Region ◽  
High Productivity ◽  
Lower Volga ◽  
Local Soil ◽  
Economically Valuable Traits ◽  
Selection Of

The results of the research work carried out during the period 2015-2017 are outlined. on the practical selection of pumpkin in the conditions of the Volgograd Transvolga. The results of studying the assortment of pumpkin varieties of domestic and foreign breeding in collection nurseries are presented. The most promising samples adapted to local soil and climatic conditions have high productivity (Sviteny, Chino, Marina di Chioggia, Silber Bell (USA), Kham (Laos), image (Spain), Local (Kazakhstan), Gribovskaya winter, Teshchenka , Zucchini Malchugan, and the quality of the fruit: (Chino, Chirimen nankin (Japan), Cachi JNTA (Argentina), Mantova Uyghur (Kazakhstan), Duchess, Vega F1, Sweetie, Pampushka, Green Warted Habbard (USA). A new hybrid material was obtained, an estimation of its productivity of consumer achestv, stability to bio- and abiotic factors. accessions selected promising superior standards major ecological and morphological and economically valuable traits. The characteristics of the best selected hybrid combinations are given in comparison with the standards. The most productive are hybrid combinations: Marina di Chioggia x Zorka, Zorka x Sweet banana, Silber Bell x Elegant, Sweet x Elegant, Local (Kirghizia) x Zorka, zucchini Mountain Anchor. The yield of these samples exceeds the standards by 13.3-92.2%. The quality of the fruit is distinguished by the hybrids: Marina di Chioggia x Zorka, Zorka x Marina di Chioggia, Pampushka x Elegant, Zorka x Sweet banana, Silber Bell x Elegant, Zaslavia x POOS6-07, Zorka x Oreshek, Altair x Elegant. The content of dry substances in the fruits of these samples is 2.0-8.8% higher than the standards.

Behavior of Some Varieties in the Kernel Group to the Attack of the Main Pathogens

2018 ◽  
Vol 12 (2) ◽  
pp. 1-7
Author(s):  
Sînziana Venera Morărița
Keyword(s):  
Chemical Composition ◽  
Climatic Conditions ◽  
Complex Chemical ◽  
Complex Chemical Composition ◽  
Large Production ◽  
Special Quality

Abstract Although relatively recent, peach culture has grown great in our country due to the special quality of the fruit, its very complex chemical composition and the large production that can be obtained without much effort. Peach is a species slightly adapted to our climatic conditions, suffers from winter frost, but can provide productive and long productions of 10-15 years.

Potato cultivation on soddy-podzolic soil of feeding crop rotation in the Komi Republic

2020 ◽  
pp. 26-28
Author(s):  
Н.Т. Чеботарев ◽  
Н.Н. Шергина
Keyword(s):  
Crop Rotation ◽  
Komi Republic ◽  
Climatic Conditions ◽  
Organic Fertilizers ◽  
Mineral Fertilizers ◽  
Natural Fertility ◽  
Potato Tubers ◽  
Organic And Mineral Fertilizers ◽  
Combined Use

Пахотные угодья Республики Коми в основном представлены дерново-подзолистыми почвами с низким естественным плодородием, которые без применения удобрений быстро подвергаются деградационным процессам, что резко снижает их продуктивность. Цель исследований: оценка эффективности долговременного применения органических и минеральных удобрений при выращивании картофеля в кормовом севообороте в условиях Республики Коми. Методической основой выполнения работ были комплексные исследования дерново-подзолистых почв, клубней картофеля на участках многолетнего полевого эксперимента, заложенного на землях Института агробиотехнологий ФИЦ Коми НЦ УрО РАН в соответствии с «Методическими указаниями географической сети опытов с удобрениями». Длительный период исследований (более 40 лет) характеризовался различными климатическими условиями, которые отразились на количестве урожая и качестве клубней картофеля. Было проведено 7 ротаций (14 лет) с выращиванием картофеля. Вносили органические удобрения – торфонавозный компост (ТНК) в дозах 40 и 80 т/га (1 и 2 фон, соответственно) под картофель и минеральные удобрения – NPК в дозах 1/3; 1/2 и 1 для восполнения выноса растениями элементов питания. Установлено положительное влияние комплексного применения органических и минеральных удобрений на урожайность и качество картофеля, а также на плодородие дерново-подзолистой легкосуглинистой среднеокультуренной почвы в кормовом севообороте в почвенно-климатических условиях Республики Коми. В результате применения шестипольного севооборота и комплексного внесения удобрений с 1978 года к 2019 году в почвах снизилась обменная и гидролитическая кислотность; повысилось содержание гумуса на 0,5% (в контроле); на 0,2–0,5% (с тремя дозами минеральных удобрений); на 0,3–1,1% (с ТНК); на 0,2–1,6% (при совместном применении органических и минеральных удобрений). Наибольшие урожаи картофеля получены при совместном применении органических (80 т/га) и минеральных удобрений (1 NPК) и составили 37,1 т/га клубней (8,5 тыс/га кормовых единиц). При таком соотношении удобрений показано высокое качество клубней картофеля: содержание крахмала 15,5%, витамина С – 19,4 мг%, сырого протеина – 14,1%. Количество нитратного азота не превышало ПДК (ПДК 250 мг.с.м.). Экономические расчеты показали, что при внесении ТНК 40 т/га + 1 NPК в дерново-подзолистые почвы с.-х. использования в среднетаежной зоне Республики Коми при выращивании картофеля, условный чистый доход составит 68,4 тыс. р. с 1 га, себестоимость 1 т картофеля – 2,8 тыс. р., рентабельность 188,7%. The arable land of the Republic of Komi is mainly represented by dern-sub-ground soils with low natural fertility, which without the use of fertilizers are quickly subjected to degradation processes, which dramatically reduces their productivity. The aim of the research is to evaluate the efficiency of long-term use of organic and mineral fertilizers in the growing of potatoes in feed crop rotation in the conditions of the Komi Republic. The methodological basis for carrying out the works was comprehensive studies of dern-subhead soils, potato tubers on the sites of a multi-year field experiment laid on the lands of the Institute of Agrobiotechnology of the FRC Komi SC UB RAS in accordance with the «Methodological Instructions of the Geographical Network of Experiments with Fertilizers». A long period of research (more than 40 years) was characterized by different climatic conditions, which affected the number of crops and the quality of potato tubers. There were 7 rotations (14 years) with potato cultivation. Organic fertilizers – peat-avous compost (TNK) in doses of 40 and 80 t/ha (1 and 2 background, respectively) for potatoes and mineral fertilizers – NPK in doses of 1/3; 1/2 and 1 to replenish the carry-out of food elements by plants. The positive effect of the integrated use of organic and mineral fertilizers on the yield and quality of potatoes, as well as on the fertility of soddy-podzolic light loamy medium cultivated soil in fodder crop rotation in the soil and climatic conditions of the Komi Republic, has been established. As a result of the use of six-bed crop rotation and the integrated application of fertilizers, metabolic and hydrolytic acidity decreased in soils from 1978 to 2019; humus content increased by 0.5% (in control); 0.2–0.5% (with three doses of mineral fertilizers); 0.3–1.1% (with TNCs); 0.2–1.6% (with combined use of organic and mineral fertilizers). The largest potato yields were obtained from the combined use of organic (80 t/ha) and mineral fertilizers (1 NPK) and amounted to 37.1 t/ha tubers (8.5 thousand/ha feed units). The largest potato harvests were obtained with the combined use of organic (80 t/ha) and mineral fertilizers (1 NPK) and amounted to 37.1 t/ha of tubers (8.5 thousand/ha of feed units). With this ratio of fertilizers, the high quality of potato tubers was also determined: the starch content was 15.5%, vitamin C – 19.4 mg%, crude protein – 14.1%. The amount of nitrate nitrogen did not exceed the MPC (MPC 250 mg.s.m.). Economic calculations showed that if TNK is added 40 t/ha 1 NPK to the dern-sub-ground soils of agricultural use in the medium-sized zone of the Komi Republic when growing potatoes, the conditional net income will be 68.4 thousand rubles from 1 ha, the cost of 1 t of potatoes – 2.8 thousand rubles, profitability 188.7%.

Variety study of parthenocarpic cucumber hybrids under conditions of the second light zone (Kirov)

2020 ◽  
pp. 33-36
Author(s):  
Е.Л. Макарова ◽  
Л.А. Чистякова ◽  
О.В. Бакланова ◽  
Ю.В. Борцова
Keyword(s):  
Research Work ◽  
Scientific Work ◽  
Negative Influence ◽  
Climatic Conditions ◽  
Federal State ◽  
Early Maturity ◽  
Russian Research Institute ◽  
Breeding Research ◽  
Northern Regions ◽  
Early Production

Приведены экспериментальные данные оценки по хозяйственно полезным признакам одиннадцати новых партенокарпических гетерозисных гибридов огурца в условиях весенне-летнего оборота Кировской области. Проблема возделывания теплолюбивых культур в северных регионах страны формирует цели селекционных исследований. Выращивание культуры огурца в Кировской области усугубляется неблагоприятными климатическими условиями второй световой зоны (короткая продолжительность вегетационного периода, низкие положительные температуры, заморозки в третьей декаде июля и в первой декаде августа). Цель научной работы – оценка и выявление перспективных партенокарпических гетерозисных гибридов огурца для выращивания в условиях необогреваемых теплиц в весенне-летнем обороте второй световой зоны. Исследования проводили в лаборатории северного овощеводства Кировской области во Всероссийском научно – исследовательском институте овощеводства – филиале ФГБНУ «Федеральный научный центр овощеводства» в условиях поликарбонатных необогреваемых грунтовых теплиц в течение 2018-2019 годах. В результате фенологических наблюдений и оценки биометрических показателей определены раннеспелость, скороспелость и товарность испытуемых партенокарпических гетерозисных гибридов огурца селекции Агрохолдинга «Поиск» и ВНИИО – филиала ФГБНУ «Федеральный научный центр овощеводства»: F1Авоська, F1 Атос, F1 Букет для мамы, F1Малахитовая шкатулка, F1 Мультифрут, F1 Новатор, F1Пилигрим, F1 Спринтер, F1 Реванш, F1 Тонус, F1Экспресс в сравнении с районированным гибридом огурца F1 Каролина. Определено сильное негативное влияние климатических условий второй световой зоны на продолжительность периода «всходы-плодоношение», который в среднем за годы исследований в зависимости от гибрида варьировал от 47 до 55 суток. Установлено, что для получения ранней продукции огурца в условиях поликарбонатных необогреваемых грунтовых теплиц Кировской области следует выращивать гетерозисные партенокарпические гибриды огурца F1Спринтер (3,6 кг/м2), F1 Авоська (2,1 кг/м2) и F1 Атос (2,5 кг/м2). Отмечены партенокарпические гибриды огурца F1 Спринтер и F1 Атос, которые имеют наиболее высокий выход товарной продукции 95,7 и 94,0%, соответственно. Выделен самый урожайный партенокарпический гибрид огурца F1 Новатор (16,1 кг/м2). В результате исследовательской работы рекомендовано выращивать в условиях необогреваемых теплиц весенне-летнего оборота Кировской области партенокарпические гибриды огурца F1 Новатор, F1 Спринтер, F1 Атос и F1 Авоська. The article presents the experimental data on the assessment of economically useful traits of eleven new parthenocarpic heterotic cucumber hybrids under the conditions of the spring-summer turnover of the Kirov region. The problem of cultivation of thermophilic crops, which arises in the northern regions of the country, is one of the stages of breeding research. The cultivation of cucumber in the Kirov region is aggravated by unfavorable climatic conditions of the second light zone (short duration of the growing season, low positive temperatures, frosts in the third decade of July and in the first decade of August). The purpose of the scientific work is to evaluate and identify promising parthenocarpic heterotic hybrids of cucumber for growing in unheated greenhouses in the spring-summer turnover of the second light zone. The research was carried out in the laboratory of northern vegetable growing of the Kirov region at the All-Russian Research Institute of Vegetable Growing - a branch of the Federal State Budgetary Scientific Institution Federal Scientific Vegetable Centre in the conditions of polycarbonate unheated ground greenhouses during 2018-2019. As a result of phenological observations and assessment of biometric indicators, the early maturity, early maturity and marketability of the tested parthenocarpic heterotic cucumber hybrids of the selection of Agroholding Poisk and ARRIVG – a branch of the Federal Scientific Vegetable Centre were determined: F1 Avoska, F1 Atos, F1 Buket dlya mamy, F1 Multifrut, F1 Novator, F1 Piligrim, F1Sprinter, F1 Revansh, F1 Tonus, F1 Express in comparison with the zoned hybrid of cucumber F1 Carolina. A strong negative influence of climatic conditions of the second light zone on the duration of the seedling-fruiting period was determined, which on average over the years of research, depending on the hybrid, varied from 47 to 55 days. It has been established that to obtain early production of cucumber in polycarbonate unheated ground greenhouses of the Kirov region, heterotic parthenocarpic cucumber hybrids F1 Sprinter (3.6 kg/m2), F1 Avoska (2.1 kg/m2) and F1 Atos (2.5 kg/m2). Parthenocarpic cucumber hybrids F1 Sprinter and F1 Atos were noted, which have the highest yield of marketable products, 95.7 and 94.0%, respectively. The most productive parthenocarpic cucumber hybrid F1Novator (16.1 kg/m2) has been identified. As a result of the research work, it was recommended to grow parthenocarpic cucumber hybrids F1Novator, F1 Sprinter, F1 Atos and F1 Avoska under conditions of unheated greenhouses of spring-summer turnover of the Kirov region.

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