scholarly journals Characteristics of varieties and hybrids of oriental persimmon (Diospyros kaki L.) by signs of productivity

2020 ◽  
pp. 25-28
Author(s):  
Magomed Dzhamaludinovich Omarov ◽  
Raisa Vasilievna Kulyan ◽  
Zukhra Magomedovna Omarova
Keyword(s):  
Fruit Set ◽  
Comparative Assessment ◽  
The Black Sea ◽  
Diospyros Kaki ◽  
Active Growth ◽  
Subtropical Zone ◽  
Horticultural Crops ◽  
Total Growth ◽  
Interspecies Hybrid ◽  
Phenological Phases

Persimmon (Diospyros kaki L.) is one of the main subtropical horticultural crops on the coast of The Black Sea on Caucasus. As a result of the study, the biological characteristics of passage of phenological phases, as well as the biometric growth performance of plant and development (diameter of the stem and total growth of shoots) of eleven varieties and bred eastern persimmons hybrids in the humid subtropical zone of the Krasnodar Territory. A comparative assessment of the development of trees is given, where the largest diameter of the stem was observed in the variety ‘Djiro’ - 75.0 mm; interspecies hybrid №99 (‘MVG Omarova’) - 74.9 mm and ‘Hachia’ - 68.5 mm. Initiation of flowers and the formation of fruits proceeds at the first growth of the current year and this indicator is responsible for the crop. Were noted he best varieties with active growth of the shoot ‘Djiro’ - 39.7 cm, ‘Hiakume -39.1 cm and ‘Hachia’ - 37.9 cm. In overall development the best results have Djiro’, ‘Hachia’ and ‘MVG Omarova’, less active tree growth was noted in the smallest varieties - Kiara constant ’and hybrid No. №39, ‘Zenji-Maru’, ‘Geili ’. As a result of research, we marked out the most productive varieties and hybrids of eastern date-plum Hiakume’,‘Hachia’,‘Djiro’, ‘Seedles’, ‘Zenji-Maru’, ‘Khostinsky ’, hybrid №39 and ‘MVG Omarova’. Of these, the most productive for four years of fruiting were the varieties: 'Hiakume' - whose yield is 82.5 c/ha, 'Hachia' - 73.5 c/ha and 'Djiro' - 72.0 c/ha, these varieties are characterized active growth of shoots, high fruit set, as well as varieties with large fruits, such as 'Hiakume' -231 g and 'Hachia' -228 g.

Comparative Assessment of Resistance of Hardwearing Anodes, Ternary Coated with Iridium, Ruthenium and Titanium

2017 ◽  
Vol 265 ◽  
pp. 580-586 ◽  
Author(s):  
L.N. Fesenko ◽  
I.V. Pchelnikov ◽  
R.V. Fedotov
Keyword(s):  
Black Sea ◽  
Sodium Hypochlorite ◽  
Sodium Salt ◽  
Sea Water ◽  
Comparative Assessment ◽  
The Black Sea ◽  
Current Voltage ◽  
Iridium Oxides ◽  
Corrosive Resistance ◽  
Selection Of

A selection of anode coatings has been studied to get sodium hypochlorite in low concentrationduring the electrolysis of 3% solution of sodium salt and the Black Sea water. The corrosive resistance of anodes has been determined, with different batches of ruthenium and iridium oxides, as well as their characteristics: chlorine outlet while passing throughthe current, voltage on the cell, the dynamics of concentration growth of available chlorine in solution.

scholarly journals Особенности вегетации интродуцированного сорта винограда Кёхо в стрессовых погодных условиях умеренно континентального климата юга России

2019 ◽  
pp. 223-228
Author(s):  
Dmitry Dergachev ◽  
Marina Larkina ◽  
Valerii Petrov ◽  
Mikhail Pankin
Keyword(s):  
Growth Phase ◽  
Atmospheric Precipitation ◽  
Weather Conditions ◽  
The Black Sea ◽  
Bud Break ◽  
Active Growth ◽  
Grapevine Cultivar ◽  
Long Time ◽  
Vegetation Phase ◽  
Abnormal Weather

Исследования интродуцированного японского сорта винограда Кёхо выполнены в нестабильных погодных условиях умеренно континентального климата юга России, в Черноморской зоне виноградарства Краснодарского края в условиях температурного и водного стрессов 2018 года. В период активной вегетации (май - август) сумма активных температур воздуха была на 197 °С больше среднемноголетней нормы, количество атмосферных осадков было меньше нормы в 3,7 раза и составило 47 мм. В аномальных погодных условиях интродуцированный сорт винограда Кёхо показал высокую адаптивность к нестабильным погодным условиям в форме активного роста и прохождения фенологических циклов. При остром дефиците атмосферных осадков и повышенной инсоляции продолжительность вегетации винограда Кёхо от распускания почек до полной физиологической зрелости ягод была равна 119 дней, на 5 дней меньше, чем у контрольного сорта Бригантина и на 3 дня меньше, чем в среднем по большой группе столовых сортов разного эколого-географического происхождения, расположенных рядом на Анапской ампелографической коллекции. Начало фазы распускания почек, роста побегов и соцветий наблюдалось 15 апреля, у контрольного сорта на 4 дня раньше, у сортов ампелографической коллекции на 6 дней позже. Продолжительность этой фазы вегетации у изучаемого сорта составила 54 дня, больше на 11 дней чем у контрольного сорта и на 9 дней чем у столовых сортов ампелоколлекции. Цветение у сорта Кёхо начиналось 7 июня, на 15 дней позже чем у контрольного сорта Бригантина и на 3 дня чем у группы столовых сортов на ампелоколлекции. Продолжительность периода от начала цветения до начала созревания ягод у сорта Кёхо в экологических условиях 2018 года составила 50 дней, что на 4 дня короче, чем у контрольного сорта и на 3 дня короче, чем у сортов на ампелоколлекции. Интенсивность роста ягод была более высокой по сравнению с контролем и группой столовых сортов в ампелоколлекции. Полная физиологическая зрелость ягод у изучаемого сорта наступила 11 августа, практически одновременно с контролем - 12 августа.The study of introduced Japanese grapevine cultivar ‘Kёho’ was carried out in unstable weather conditions of moderately continental climate of the South of Russia, in the Black Sea viticultural zone of the Krasnodar Krai under temperature and water stress of 2018. During the active vegetation season (May - August), the accumulated effective temperatures made 197 ° С above the long-time average annual, the amount of precipitation was 3.7 times less than normal, and amounted to 47 mm. Under the effect of abnormal weather conditions, the introduced grapevine cultivar ‘Kёho’ demonstrated high adaptability to erratic weather conditions during the active growth phase and passage of phenological cycles. Under acute atmospheric precipitation deficit and increased insolation, the duration of ‘Kёho’ grapevine vegetation from bud break to full physiological berry ripeness made 119 days, which is 5 days less as compared to control cultivar ‘Brigantina’ and 3 days less than the average for a large group of table cultivars of various ecological and geographical origin, located in the nearby Anapa ampelographic collection. The start of the bud break, shoot and inflorescence growth phase was observed on April 15; it happened 4 days earlier for the control cultivar, and 6 days later for the cultivars in the ampelographic collection. The duration of this vegetation phase for the studied cultivar was 54 days, which by 11 days exceeded that of the control cultivar and by 9 days that of the table cultivars in the ampelographic collection. The bloom of ‘Kёho’ began on June 7 - 15 days later than that of the control cultivar ‘Brigantina’ and 3 days later as compared to the group of table cultivars in the ampelographic collection. Duration of the early bloom to veraison period of ‘Kёho’ grapes in the ecological conditions of 2018 made 50 days, which was 4 days shorter than that of the control cultivar and 3 days shorter as compared to the cultivars in the ampelographic collection. The berry growth was more intensive as compared to the control and the group of table cultivars in the ampelographic collection. Berries of the studied cultivar reached full physiological ripeness on August 11, almost simultaneously with the control - on August 12.

scholarly journals Prebloom Treatments to Alleviate Cold Injury in Apple

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 807E-807
Author(s):  
E.W. Stover ◽  
T.E. Paine ◽  
W.C. Stiles
Keyword(s):  
Leaf Area ◽  
Untreated Control ◽  
Fruit Set ◽  
Fruit Size ◽  
Cold Injury ◽  
Seed Number ◽  
Flower Buds ◽  
Active Growth ◽  
Strong Trend ◽  
Winter Temperatures

Damage to xylem subtending apple buds is often observed following very low winter temperatures. Reports suggest that prebloom application of boron, zinc, and urea facilitate recovery. Prebloom nutrient treatments were applied to `McIntosh' and `Empire' at three sites in Spring 1994. The following treatments were applied to drip at half-inch green: boron (22.8 mM, solubor); Zn-EDTA (0.75 mM); boron and Zn-EDTA; boron, Zn-EDTA, and urea (59.4 mM). Another treatment used boron and Zn-EDTA at half-inch green, followed by boron, Zn-EDTA, and urea at pink. Spur leaf area, fruit set, fruit size, and seed number were determined. There were no clear treatment effects at the warmest site (mid-winter low –32C); however, this orchard was more variable than other treatment sites. The intermediate site (mid-winter low –37C) had a strong trend of increasing fruit set in `Empire' and `McIntosh' as more nutrients were applied. The combined half-inch green and pink treatment significantly increased fruit set by 23.8% compared to the untreated control. At the coldest site (mid-winter low –42C), `Empire' again displayed a strong trend of increasing fruit set with additional nutrients. All treatments combining boron and zinc significantly increased fruit set. The combined half-inch green and pink treatment increased fruit set by 43%. At this site `McIntosh' did not respond to treatment. However, `McIntosh' trees had continued active growth into late Fall 1993 and sustained severe cold injury in November. Data suggest that, when they were effective, nutrient treatments resulted in increased retention of flower buds on damaged spurs.

scholarly journals Drought tolerance of Liriope graminifolia (L.) Baker and Ophiopogon japonicus (Thunb.) Ker Gawl. – promising lawn-forming plants for the subtropical zone of the Black Sea coast of Russia

2020 ◽  
pp. 18-24
Author(s):  
N. A. Konnov ◽  
N. N. Karpun ◽  
A. V. Kelina
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
High Water Content ◽  
Summer Drought ◽  
Hydrothermal Conditions ◽  
Subtropical Zone ◽  
Black Sea Coast ◽  
Ophiopogon Japonicus ◽  
Humid Subtropics ◽  
Sea Coast

The lawn coverings creation in the humid subtropics zone of Russia is one of the topical areas of ornamental horticulture. This is due to the high requirements for year-round decorative plantings, the peculiarities of natural and climatic conditions and the general lack of issue knowledge. This direction is of particular importance in plantations located in shaded areas under the canopy of tree crowns, where, in addition to common for the region unfavourable factors of the hydrothermal regime, insufficient illumination is added, which together limits the possibility of traditional cereal grasses cultivating. Evergreen grass-like ground cover plants can be a complete substitute for lawn grasses in shaded areas. The aim of the research was to determine the degree of drought resistance of Liriope graminifolia (L.) Baker and Ophiopogon japonicus (Thunb.) Ker Gawl. and the ability to maintain decorativeness during the period of unfavourable hydrothermal conditions in the summer in the humid subtropics of Russia. The studies were carried out in 2013-2018 on the Black Sea coast of the Caucasus in the Sochi region, in plantations (on test plots with an area of 5-10 m2) and in conditions of vegetation experiments (in containers with a volume of 2 liters) on the territory of the Kuban Subtropical Botanical Garden (settlement Uch-Dere), according to generally accepted methods adapted to the studied taxa. It was found that an important mechanism of adaptation of the studied plants to drought is the ability to accumulate and redistribute moisture between vegetative organs, providing a high water content in the leaves. The decorativeness of O. japonicus and L. graminifolia in open ground in the atmospheric moisture absence lasts up to 12-14 days, in a vegetation experiment (container culture) – up to 14-16 days. O. japonicus and L. graminifolia retained the ability to self-regenerate up to 35-37 days of the experiment, and then the plants died. The consequences of summer drought in the studied plants were compensated by active autumn growth. Unlike classic lawns, which require daily watering, lawns from O. japonicus and L. graminifolia should be irrigated with a long (more than 12-14 days) absence of precipitation in the summer months.

scholarly journals Features of formation of dendrofagous invasive pest fauna in the humid subtropics of Russia at the beginning of the XXI century

2019 ◽  
Author(s):  
Н.Н. Карпун
Keyword(s):  
Invasive Species ◽  
Black Sea ◽  
East Asian ◽  
Invasive Pest ◽  
The Black Sea ◽  
The Caucasus ◽  
Subtropical Zone ◽  
Black Sea Coast ◽  
Humid Subtropics ◽  
Sea Coast

Влажные субтропики Черноморского побережья России являются региономреципиентом для большого количества инвазионных видов вредных организмов. В начале XXI в. в зоне влажных субтропиков России выявлены 35 новых видов дендрофильных насекомых, из которых 26 можно отнести к инвазионным: из них 17 видов новые для территории России, а 9 новые для субтропической зоны Черноморского побережья Кавказа. Особенности инвазионного процесса у фитофагов изучались на основе анализа таксономического состава, регионовдоноров, векторов и путей инвазии, биотопического распределения видов и динамики инвазий. За период 2000 2017 гг. в общем количестве появившихся инвазионных видов отмечено снижение доли представителей отряда Hemiptera и увеличение доли представителей отряда Lepidoptera. В последние годы наибольшее количество инвазионных видов вредителей имеет североамериканское, а не восточноазиатское происхождение, что было характерно для региона на протяжении предыдущих полутора столетий. Установлены векторы инвазии для новых видов: непреднамеренный завоз с посадочным материалом, проникновение с транспортными потоками, непреднамеренный завоз с грузами нерастительного происхождения, самостоятельные перелеты. Все инвазионные виды восточноазиатского, американского и австралийского происхождения характеризуются двухступенчатой инвазией, т. е. они проникали в Россию из вторичного ареала в Европе. Максимальное количество чужеродных видов обосновалось в насаждениях декоративных пород (садовопарковые экосистемы), причем эта тенденция традиционна для региона. Частота появления инвазионных видов на Черноморском побережье Кавказа в начале XXI в. 1 вид в 9 месяцев, что в 7,4 раза чаще, чем в начале XX в. Humid subtropics of the Russian Black Sea coast are the recipient region for many invasive species of harmful organisms. At the beginning of the XXI century, 35 new species of dendrophilous insects were identified in the humid subtropical zone of Russia, 26 of which can be considered invasive: 17 species are new for Russia and 9 are new for the subtropical zone of the Black Sea coast of the Caucasus. Special features of the invasive process among phytophages were studied using following parameters: taxonomic composition, donor regions, vectors and pathways of invasion, biotopic distribution of the species and invasion dynamics. During the period of 2000 2017, a decrease in the representatives of order Hemiptera and an increase in the representatives of order Lepidoptera has been recorded. In recent years, the largest number of invasive species has North American origin rather than East Asian, which was typical for the region over the previous one and a half centuries. The following invasion vectors were specified for the newly recorded species: unintentional importation with planting material, invasion with traffic flow, unintentional importation with goods of nonplant origin, independent migration. All invasive species of East Asian, American, and Australian origin are characterized by twostage invasion, namely arriving to Russia from the secondary invasive range in Europe. The maximum number of alien species has settled in the plantations of ornamental species (landscape ecosystems), and this trend is traditional for the region. The rate of invasive species on the Black Sea coast of the Caucasus in the early XXI century was once in nine months, which is 7,4 times higher than in the early XX century.

scholarly journals Influence of Fruiting Position and Co-existence of Pollinated Fruit on a Shoot on Parthenocarpic Fruit Set of Kaki cvs. Fuyu and Hiratanenashi (Diospyros kaki L. f.).

1993 ◽  
Vol 62 (2) ◽  
pp. 317-325 ◽  
Author(s):  
Akira Kitajima ◽  
Yoshihiko Kuramoto ◽  
Kiichi Ohoka ◽  
Mikio Nakano ◽  
Masashi Ishida
Keyword(s):  
Fruit Set ◽  
Diospyros Kaki ◽  
Parthenocarpic Fruit

scholarly journals Green manure effects on inorganic nitrogen dynamics in soil and its accumulation in grape must

2019 ◽  
Vol 13 ◽  
pp. 04010
Author(s):  
Roberto Zanzotti ◽  
Enzo Mescalchin
Keyword(s):  
Soil Nitrogen ◽  
Green Manure ◽  
Nitrogen Availability ◽  
Fruit Set ◽  
Inorganic Nitrogen ◽  
Mineral Fertilizer ◽  
Climatic Trend ◽  
Yeast Assimilable Nitrogen ◽  
Assimilable Nitrogen ◽  
Phenological Phases

The adoption of green manure practices in organic agriculture is increasingly spreading. This work aims to prove whether winter green manure—when compared to a traditional mineral fertilizer— alters the dynamics of inorganic nitrogen (NO3− and NH4+) availability in soil and the yeast assimilable nitrogen (YAN) in grape musts. During a two-year period, the soil nitrogen content was influenced by climatic trend and, especially, by rainfall. In fact, rainy periods reduced inorganic nitrogen availability in the soil. In both years, the green manure plot presented higher soil content of inorganic nitrogen at fruit-set, while different dynamics were shown over the following phenological phases. The must YAN concentration did not differ among treatments over the two-year experiment.

Sign in / Sign up

Export Citation Format

Share Document