scholarly journals Оптимизация элементов технологии возделывания томатов в защищенном грунте по малообъемной технологии

2021 ◽  
Author(s):  
Елена Пономаренко ◽  
◽  
Татьяна Пазяева ◽  
Keyword(s):  
Mineral Wool ◽  
Seasonal Development ◽  
Greenhouse Tomato ◽  
Trade Name ◽  
Biometric Measurements ◽  
Low Volume

The elements of the technology of cultivation of tomatoes by a low-volume hydroponic method using the mineral wool substrate "Grodan" have been studied. The advantages of growing crops by the method of low-volume technology in the greenhouse complex SRL "Polimer Gaz Conducte", Falesti, Moldova are shown. The trade name of the branch is "EcoAgroPrim". Greenhouse SRL "PolimerGazPrim" is a member of the Moldovan Association "Association of Farmers of Moldova", which includes 128 greenhouse facilities. The enterprise produces 130-245 tons of pink-fruited indoor (greenhouse) tomato per year. We studied and analyzed the elements of technology for growing tomatoes in greenhouses using low-volume technology and carried out phenological observations and biometric measurements of plants for several years 2015-2020. It is shown that based on the analysis of phenological observations and biometric measurements, a table of the seasonal development of the crop was compiled, and the highest yield was noted in May and June for all years of observation and, accordingly, the gross harvest was the highest during this period.

scholarly journals Efficiency of application of silicon-containing fertilizers in low-volume cucumber growing technology Cyborg F1

2020 ◽  
pp. 25-30
Author(s):  
M. V. Selivanova ◽  
E. S. Romanenko ◽  
T. S. Aysanov ◽  
E. A. Mironova ◽  
N. A. Esaulko ◽  
...  
Keyword(s):  
Mineral Wool ◽  
Production Volume ◽  
Total Production ◽  
Biological Potential ◽  
Cultivation Technology ◽  
The Russian Federation ◽  
Low Volume ◽  
Microclimate Conditions ◽  
Positive Effect

Relevance. Cucumber in the Russian Federation in protected ground in terms of growing areas and production volume is the first, its share in the total production of greenhouse products in recent years accounts for about 50-55%. Scientific research confirms the positive effect of silicon-containing agrochemicals on the intensity of metabolic processes in the plant body, which is manifested in increasing the yield of commercial products, resistance to adverse environmental factors, and the realization of the biological potential of crops. Methods. The aim of the research is to evaluate the effect of silicon – containing fertilizers on the productivity of Cyborg F1 cucumber in low-volume cultivation technology. The research was conducted in the winter-spring period of 2020 in the conditions of a winter glazed greenhouse of the greenhouse complex of the Stavropol state agrarian university. The objects of research were cucumber Cyborg F1, fertilizers Kelik Potassium Silicon, Siliplant, Forris, Bio Silicium. Fertilizers were applied to foliar top dressing three times during the cucumber growing season. All microclimate conditions in the greenhouse were regulated automatically using the Sercom climate program. Mineral wool was used as a substrate. Results. Fertilizing with silicon – containing fertilizers increased the degree of assimilation of nutrients by plants of cucumber Cyborg F1: the nitrogen content in the drainage solution decreased by 6-26 mg/l, phosphorus – by 4-8 mg/l, and potassium-by 18-34 mg/l. The use of silicon-containing fertilizers contributed to an increase in the area of cucumber leaves compared to the control by 1.6-3.1%, the yield of standard products-by 3.7-8.1%, yield-by 0.9-2.5 kg/m2, and a decrease in the degree of ovary death – by 2.0-3.5%. When using silicon-containing fertilizers, the quality of cucumber products improved. Thus, in the conditions of the sixth light zone, to increase the yield of Cyborg F1 cucumber in low-volume cultivation technology, it is recommended to use silicon-containing fertilizers Siliplant and Forris, which provides an increase relative to the control of 7.4 and 9.2%, respectively.

scholarly journals PRODUCTIVITY OF THE GREENHOUSE TOMATO CULTURE IN THE LONG TURNOVER IN THE NORTH

2018 ◽  
pp. 76-80
Author(s):  
T. К. Golovko ◽  
I. V. Dalke ◽  
G. N. Tabalenkova ◽  
R. V. Malyshev ◽  
E. E. Grygoray
Keyword(s):  
Light Intensity ◽  
Mineral Wool ◽  
Production Costs ◽  
Co2 Uptake ◽  
Average Value ◽  
Greenhouse Tomato ◽  
The North ◽  
Tomato Yield ◽  
Cloudy Weather ◽  
Tomato Culture

The data on the greenhouse tomato culture productivity in the long turnover (February November) without application of artificial light are presented. The plants were grown using small-volume hydroponic technology on mineral wool in the industrial greenhouse of LLC "Prigorodny" (Syktyvkar, 61° 40′35″N, 50° 48′35″E). Tomato seeds (hybrid Starbuck F1) were sown in early December 2016. The seedlings were illuminated for 19 h daily with the high-pressure sodiumvapor reflector lamps (HPSV-400W / REFLUX) with an installed power of 130 W/m2. In early February 2017 plants at the age of 4245 days were transferred to the greenhouse and grown at density of 2 plants per square meter under natural lighting conditions. The dependence between the light intensity at leaf level and the natural light entering the greenhouse was studied. In spring sunny days, the light intensity at the level of the upper leaves did not exceed the 450500 μmol quanta/m2s, and in cloudy weather was 2-3 times lower. It was found that the saturation of leaf CO2-uptake by light took place at intensity of 800-1000 μmol quanta/m2s. The leaves formed under light deficiency had lowered photosynthetic activity (near 3 μmol СО2/m2s). The maximal productivity of tomato culture was observed during maximum light levels and sunny period (June-July). The average value of tomato productivity was about 34 kg/m2. The data show the possibility of producing commercial tomato yield in the first light zone without artificial lighting, which significantly reduces production costs.

scholarly journals Features of the formation of a phytopathogenic complex on tomatoes in greenhouses

2019 ◽  
pp. 191-200
Author(s):  
G. Tkalenko ◽  
S. Goral
Keyword(s):  
Growing Season ◽  
Mineral Wool ◽  
Brown Spot ◽  
Viral Diseases ◽  
Stable Complex ◽  
Protective Measures ◽  
Soil Mixture ◽  
Bacterial Diseases ◽  
Cultivation Technology ◽  
Low Volume

Goal. Conduct phytopathological monitoring of tomato plantings in greenhouses, study the dynamics of the spread and development of diseases. Methods. The studies were carried out according to the methods generally accepted in phytopathology, the results of the studies were processed statistically. Results. It was found that for 2002—2019. Research throughout the growing season (from the emergence of seedlings to the end of the growing season), tomatoes in greenhouses when grown on different substrates (soils and mineral wool) are largely affected by fungal and bacterial diseases, to a lesser extent by viral diseases. Among the diseases of tomatoes, root and gray rot, fusarium wilting, brown spot prevail, which affect crops within 21.8—86.3% in ground greenhouses and 18.4—61.7% on mineral wool. The intensity of manifestation of bacterial diseases increased, the prevalence of which was 48—63.3% on soils and 51.5—78.5% on mineral wool, with the development of 19.0—27.5% and 25.8—28.3%, respectively. Viral diseases are less common — 7.5—10.5% with the development of 3.9—4.3% for soil mixture and 8.8—13.4% with the development of 4.4—5.8% for mineral wool. Among the nonparasitic diseases, tomato apical rot is dominant. When grown on soils, the infestation of fruits was 18.7%, maximum — 27.5%, and development — 4.3—7.0%. With a low-volume growing technology, the spread reached 16.6—31.1%, while the development was 3.2—4.1%. Conclusions. On planting tomatoes in greenhouses, regardless of the greenhouse substrates, there is a stable complex of fungal, bacterial, viral and nonparasitic diseases, and their harmfulness depends on the cultivation technology. Tomatoes during the growing season are affected not by one type of pathogen, but by their complex. The phytopathological complex of tomatoes in greenhouses is dynamic, which requires constant study and protective measures.

475: Clinically Insignificant Prostate Cancer - Can we Reliable Predict Low Volume and Low Grade Prostate Cancer Preoperatively?

2006 ◽  
Vol 175 (4S) ◽  
pp. 154-154
Author(s):  
Michael Alschibaja ◽  
Joerg Massmann ◽  
Armin Funk ◽  
Heiner Van Randenborgh ◽  
Rudolf Hartung ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Low Grade ◽  
Low Volume ◽  
Insignificant Prostate Cancer

EFFECTIVENESS AND TOLERABILITY OF VERY LOW VOLUME PREPARATION FOR COLONOSCOPY: A PROSPECTIVE, MULTICENTER STUDY

2019 ◽  
Author(s):  
M Maida ◽  
G Morreale ◽  
E Sinagra ◽  
M Manganaro ◽  
D Schillaci ◽  
...  
Keyword(s):  
Multicenter Study ◽  
Prospective Multicenter Study ◽  
Low Volume

Identification and Management of Clustered Pellitory (Parietaria praetermissa) in Citrus Groves

EDIS ◽  
2019 ◽  
Vol 2019 (5) ◽  
pp. 3
Author(s):  
Ramdas Kanissery ◽  
Biwek Gairhe ◽  
Brent Sellers ◽  
Steve Futch
Keyword(s):  
Drip Irrigation ◽  
Early Summer ◽  
Irrigation Systems ◽  
Spray Pattern ◽  
Citrus Groves ◽  
Low Volume ◽  
Florida Citrus ◽  
Heavy Infestation

In Florida, clustered pellitory is becoming a troublesome weed for citrus, especially from the winter through early summer. Inadequate management of this weed can result in its heavy infestation in tree rows and can interrupt the spray pattern of low-volume drip irrigation systems. This new 3-page publication of the UF/IFAS Horticultural Sciences Department will assist Florida citrus growers with proper identification of clustered pellitory and with adoption of adequate and timely strategies to manage this weed in their groves. Written by Ramdas Kanissery, Biwek Gairhe, Brent Sellers, and Steve Futch. https://edis.ifas.ufl.edu/hs1341

Sign in / Sign up

Export Citation Format

Share Document