scholarly journals Pollution of the Natural Environment in Intensive Cultures Under Greenhouses

2012 ◽  
Vol 38 (2) ◽  
pp. 45-53 ◽  
Author(s):  
Tomasz Kleiber
Keyword(s):  
Environmental Pollution ◽  
Nutrient Solution ◽  
Natural Environment ◽  
Vegetation Period ◽  
Mineral Fertilizers ◽  
Organic Substrates ◽  
Nutrient Requirements ◽  
Soil Medium ◽  
Ecological Awareness ◽  
Drainage Waters

Pollution of the Natural Environment in Intensive Cultures Under GreenhousesThe last two decades have brought a significant modernization in methods of cultivation in greenhouses. Soilless cultures, isolated from soils, have become a common practice, similarly as fertigation (fertilization + irrigation) installations, although most of them are applied in the open system (with no recirculation), where excess nutrient solution is removed straight to soil. This situation was the reason why it was decided to conduct studies, extended over a period of many years, on the estimation of environmental pollution caused by discharged drainage waters containing mineral fertilizers in economically important cultures in Poland (anthurium, tomato, cucumber). On the basis of the chemical composition of drainage waters and amounts of nutrient solution spillway from culture beds data were estimated concerning pollution of the soil medium by the nutrient solution. The level of pollution was dependent on nutrient requirements of crops and the length of the vegetation period. The highest environmental pollution is caused by intensive tomato growing (in kg·month·ha-1): N-NO3(up to 245), K (up to 402), Ca (up to 145) and S-SO4(up to 102). A lesser threat is posed by metal microelements: Fe (up to 2.69), Mn (up to 0.19), Zn (up to 0.52) and Cu (up to 0.09). Lower contamination of the natural environment is generated in cultures with lower nutrient requirements (anthurium) and in the case of culture on organic substrates. With an increase in ecological awareness of producers recirculation systems should be implemented in the production practice, in which drainage waters do not migrate directly to soil, but are repeatedly used to feed crops.

scholarly journals Soilless Cultivation: Dynamically Changing Chemical Properties and Physical Conditions of Organic Substrates Influence the Plant Phenotype of Lettuce

2021 ◽  
Vol 11 ◽  
Author(s):  
Annika Nerlich ◽  
Dennis Dannehl
Keyword(s):  
Nutrient Solution ◽  
Phenolic Acid ◽  
Organic Materials ◽  
Oxygen Deficiency ◽  
Arable Land ◽  
Chemical Properties ◽  
Mineral Fertilizers ◽  
Sphagnum Moss ◽  
Organic Substrates ◽  
Soilless Cultivation

In agriculture, the increasing scarcity of arable land and the increase in extreme weather conditions has led to a large proportion of crops, especially vegetables, being cultivated in protected soilless cultivation methods to provide people with sufficient and high-quality food. Rockwool has been used for decades as a soil substitute in soilless cultivation. Since rockwool is not biodegradable, it is disposed in landfills after its use, which nowadays leads to ecological concerns and drives the search for alternative substrates, especially organic materials. The objectives of this study were to investigate the effects of organic materials (wood chips, sphagnum moss, and hemp fibers) in relation to rockwool substrate on plant growth and quality of lettuce as a result of physical and chemical properties of the mentioned substrates. We were able to show that sphagnum moss is a suitable substitute substrate for lettuce cultivation, contrary to hemp. All investigated substrates presented good physical properties, but differed in their decomposition stability. Within 8 weeks, 30% of the hemp and about 10% of both sphagnum and wood materials were degraded. It was concluded that the increased microbiological activity immobilized nitrogen and led to oxygen deficiency in the rhizosphere and resulted in increased phenolic acid contents in lettuce but poor yield on hemp. Sphagnum caused a pH decrease and accumulation of ammonium in the nutrient solution and allowed the highest yield for lettuce at moderate phenolic acid contents. Low yields were obtained on wood, which could possibly be increased by optimized nutrient solution, so that wood as an alternative to rockwool was not excluded. By applying used organic substrates as soil additives on arable land, the nutrients accumulated in it might fertilize the open field crops, thus saving mineral fertilizers. This, together with the avoidance of waste, would contribute to a greater sustainability.

REKONSTRUKSI DAN REAKTUALISASI LITERASI EKOLOGI SOSIAL ISLAM

1970 ◽  
Vol 13 (2) ◽  
Author(s):  
Heru Kurniawan
Keyword(s):  
Natural Environment ◽  
Social Ecology ◽  
Social Space ◽  
The State ◽  
Ecological Literacy ◽  
Human Interaction ◽  
Basic Principles ◽  
Ecological Awareness ◽  
Social Ecological ◽  
The Social

Literasi ekologi sosial Islam adalah interaksi manusia dengan lingkungan alam, teknologi, dan sosial yang didasarkan pada prinsip dasar Islam. Rekonstruksi literasi ekologi sosial Islam yang bisa direkonstruksi adalah prinsip dasar Islam yang menegaskan posisi manusia sebagai “pemimpin” yang diberi “amanah” untuk mengelola “bumi” atau “lingkungan alam dan sumber daya alam” sebaik-baiknya. Rekonstruksi literasi ekologis inilah yang kemudian akan diaktualisasikan pada masyarakat. Proses aktualisasi adalah kegiatan aktual dalam menanamkan kesadaran ekologi sosial Islam pada masyarakat yang mana dilakukan dalam ruang sosial keluarga, masyarakat, dan sekolah yang diorganisasi oleh negara melalui kebijakan dan peraturan per undang-undangan. Dengan proses rekonstruksi dan aktualisasi yang terstruktur ini, maka negara akan aktif membangun kesadaran ekologis sosial Islam dengan aktif dan terstruktur dengan baik guna mewujudkan basis kesadaran, ilmu pengetahuan, dan tata nilai ekologi sosial Islam pada masyarakat. Literacy on Islamic social ecology is the human interaction with the natural environment, technology, and social which is based on the basic principles of Islam. Reconstruction of literacy on Islamic social ecology that can be reconstructed is a basic tenet of Islam that affirms the human position as a "leader" by "mandate" to manage "Earth" or "natural environment and natural resources" as well as possible. Reconstruction of ecological literacy is then to be actualized in society. The process of actualization is actual activity in instilling awareness of the social ecology of Islam in the society which is done in the social space of families, communities, and schools organized by the state through policies and regulations. With the process of reconstruction and actualization, then the state will actively build social-ecological awareness of Islam in order to realize a base of awareness, knowledge, and values of Islamic social ecology in society.

scholarly journals Effect of Azotobacter chroococcum on sugar beet and microbial activity of rhizosphere

2010 ◽  
pp. 37-46
Author(s):  
Janja Kuzevski ◽  
Nada Milosevic ◽  
Sasa Krstanovic ◽  
Zora Jelicic
Keyword(s):  
Sugar Beet ◽  
Soil Microorganisms ◽  
Vegetation Period ◽  
Mineral Fertilizers ◽  
Atmospheric Nitrogen ◽  
Root Yield ◽  
Almost All ◽  
Biological Nitrogen ◽  
Number Of Bacteria ◽  
Soil Dehydrogenase Activity

In sugar beet production, one of the most important factors that affect the yield, apart from genetic properties, is the use of mineral fertilizers. Considerate amounts of mineral fertilizers are used in sugar beet production. However, if agroecological conditions are not optimum, mineral fertilizers cannot be completely absorbed, which may lead to soil contamination. Therefore, research has been focusing on ways of using atmospheric nitrogen by means of nitrogen-fixing bacteria. Numerous researches have proved that one part of mineral fertilizers can be replaced by biological nitrogen. The aim of this research was to determine the effect of genotype, azotobacter and the amount of mineral fertilizers on the root yield of sugar beet and on the microbiological activity of the sugar beet rhizospheric soil. Three hybrids of sugar beet were used during the two years of the research. The seed of the hybrids was inoculated with three strains of azotobacter. Various amounts of NPK were used (0;30;60;90 kg/ha). At the end of the vegetation period, the following were determined: root yield, total number of bacteria, number of azotobacter, oligotrophic bacteria, ammonifiers, fungi, and actinomycetes in soil. Dehydrogenase activity was measured. The results were processed statistically (analysis of variance for factorial trials) and the effect of the factors was determined upon the expected mean square values. The yield was mainly affected by the amount of mineral fertilizers. However, the effect of mineral fertilizers was different with different inoculation treatments. The effect of the examined factors was dependant upon genotype, amount of mineral fertilizers, inoculation and the year of trials. The interaction between genotype, mineral fertilizers, inoculation and the year of trials was the factor that had the greatest effect on the number of almost all the examined soil microorganisms.

scholarly journals RESEARCH OF HEAVY METAL SUPPLY IN AGROLANDSCAPE DURING THE VEGETATION PERIOD

2021 ◽  
pp. 4-8
Author(s):  
A. Ilinskiy
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Agricultural Landscape ◽  
Experimental Studies ◽  
Growing Season ◽  
Vegetation Period ◽  
Mineral Fertilizers

The paper presents the results of a study of the intake of heavy metals into the agricultural landscape during the growing season. In the article of the parish, their intake with mineral fertilizers, seeds, precipitation was taken into account. Studies have shown that precipitation is the most significant input of the studied heavy metals into the agricultural landscape. Depending on the variant of the experiment, their input with precipitation varies as follows: for copper 77.5 - 95.9%; for zinc 50.5 - 82.0%; for lead 49.3 - 89.4%; for cadmium 68.4 - 94.7%. Based on the results of experimental studies, an empirical series of pollutants entering the agricultural landscape was built: Zn  Cu  Pb Cd.

scholarly journals Dynamics of mineral nitrogen in the gray forest soil under malt barley on the background of mineral fertilizers in the forest steppe of the east Prisayan

2021 ◽  
Vol 285 ◽  
pp. 06005
Author(s):  
Viktor Grebenshchikov ◽  
Nikolay Tyutrin ◽  
Vasily Verkhoturov
Keyword(s):  
Forest Soil ◽  
Field Experiments ◽  
Gray Forest Soil ◽  
Heavy Particle ◽  
Vegetation Period ◽  
Ammonium Nitrogen ◽  
Mineral Nitrogen ◽  
Mineral Fertilizers ◽  
Forest Steppe ◽  
Moisture Regime

The content of mineral nitrogen was studied when it was applied at a dose of 60 kg / ha on gray forest soil of heavy particle- size distribution at various levels of phosphorus-potassium nutrition in field experiments with barley. Fertilizer doses were determined by the normative method according to the CINAS method for a planned yield of 3 t / ha. It was shown that the dynamics of nitrate and ammonium nitrogen depended on the moisture regime during the vegetation period. With excessive moisture, nitrate nitrogen, with its initial content of 4-5 mg / kg, is not detected in the arable layer by the middle of the growing season, and with a moisture deficit, less dynamism is noted. It is found in an amount of 5-7 mg / kg by the end of vegetation. The N – NH4 + dynamics turned out to be less pronounced. With an excess of moisture, its content increased to 15.6 mg / kg, and with a deficit, it decreased more than by four times from the maximum during the vegetation. In general, the content of mineral nitrogen in gray forest soil is highly dynamic, which depends on the moisture regime and the nature of its consumption by barley.

scholarly journals THE ACCUMULATION OF MICROELEMENTS IN PLANTS OF SPRING RAPE WITH THE USE OF CHICKEN MANURE, AND ZEOLITE

2020 ◽  
pp. 17-23
Author(s):  
О.А. ДУБРОВИНА ◽  
Т.В. ЗУБКОВА ◽  
Д.В. ВИНОГРАДОВ
Keyword(s):  
Trace Elements ◽  
Vegetation Period ◽  
Black Soil ◽  
Chicken Manure ◽  
Mineral Fertilizers ◽  
Forest Steppe ◽  
Development Methodology ◽  
Black Soil Region ◽  
Copper Manganese ◽  
Mineral Mixtures

Проблема и цель. Целью исследования являлось изучение влияния различных доз куриного помёта (КП), цеолита (Ц), их смесей и минеральных удобрений на накопление микроэлементов в вегетативных органах растений ярового рапса в различные фазы развития. Методология. Опыт закладывался по следующей схеме: 1) контроль; 2) N60P60K60; 3) Ц 3 т/га; 4) КП 2,5 т/га; 5) КП 5 т/га; 6) КП 10 т/га; 7) N60P60K60 +Ц 3 т/га; 8) КП 2,5 т/га+Ц 3 т/га; 9) КП 5 т/га+Ц 3 т/га; 10) КП 10 т/га+Ц 3 т/га. Содержание микроэлементов меди, марганца, цинка в растениях устанавливали после сухого озоления при температуре 525 ± 25 ºС атомно-абсорбционным методом. Результаты. Результаты опыта показали, что внесение цеолитсодержащей породы Тербунского месторождения способствовало снижению таких микроэлементов как Cu, Zn и Mn в вегетативной массе рапса на протяжении всего периода развития растений. На опытных участках с использованием органо-минеральных смесей (КП 2,5 т/га + Ц 3 т/га, КП 5 т/га + Ц 3 т/га , КП 10 т/га + Ц 3 т/га) выявлена активная адсорбция цеолитсодержащей породы Тербунского месторождения по отношению к Zn, которая способствовала снижению элемента в вегетативной массе рапса в вариантах опыта на протяжении всего периода вегетации растений. Заключение. Следовательно, проведённые исследования позволяют рекомендовать возделывание ярового рапса с использованием в качестве удобрений органических отходов совместно с природным цеолитом в условиях лесостепи ЦЧР. Problem and purpose. The purpose of the study was to study the efect of diferent doses of chicken manure (CM), zeolite (Z), their mixtures and mineral fertilizers on the accumulation of trace elements in the vegetative organs of spring rapeseed plants at diferent stages of development. Methodology. The experiment was based on the following scheme: 1) control; 2) N60P60K60; 3) Z 3 t/ha; 4) CM 2.5 t/ha; 5) CM 5 t/ha; 6) CM 10 t/ha; 7) N60P60K60 + Z 3 t/ha; 8) CM 2.5 t/ha + Z 3 t/ha; 9) CM 5 t/ha + Z 3 t/ha; 10) CM 10 t/ha + Z 3 t/ha. The content of trace elements of copper, manganese and zinc in plants was determined after dry salting at a temperature of 525 ± 25° C by atomic absorption. Results. The results of the experiment showed that the introduction of zeolite-containing rocks ofTerbunsky Deposit contributed to the reduction of such microelements as Cu, Zn and Mn in the vegetative mass of rapeseed throughout the entire period of plant development. Active adsorption of the zeolite-containing rock of Terbunsky Deposit in relation to Zn was revealed in the experimental plots using organo-mineral mixtures (CM 2.5 t/ha + Z 3 t/ha, CM 5 t/ha + Z 3 t/ha, CM 10 t/ha + Z 3 t/ha), which contributed to a decrease in the element in the vegetative mass of rapeseed in the experimental variants throughout the entire vegetation period of plants. Conclusion. Therefore, the conducted research allows to recommend the cultivation of spring rapeseed with the use of organic waste as fertilizers together with natural zeolite in the conditions of the forest-steppe of the Central Black Soil Region

scholarly journals Site conditions and genotype influence polyphenol content in potatoes

2008 ◽  
Vol 34 (No. 4) ◽  
pp. 132-137 ◽  
Author(s):  
K. Hamouz ◽  
J. Lachman ◽  
J. Čepl ◽  
P. Dvořák ◽  
V. Pivec ◽  
...  
Keyword(s):  
Vegetation Period ◽  
Mineral Fertilizers ◽  
Site Conditions ◽  
Potato Tubers ◽  
Polyphenol Content ◽  
Mineral Fertilization ◽  
Total Polyphenols ◽  
Yellow Flesh

In the years 2005 and 2006 the effect of site conditions, yellow and purple fleshed varieties and mineral fertilization on the content of total polyphenols (TP) in potato tubers was investigated. In both years significantly the highest TP content (by 5.7 to 56.3% higher than in other localities) was determined at the Stachy locality; we ascribe it to apparently lower temperatures in the vegetation period at this locality of higher altitude. In the purple flesh Valfi variety TP content higher by 74 to 141% was recorded in average of both years, in comparison to yellow flesh varieties. In the group of eight yellow flesh varieties the highest TP content was recorded in the Ditta variety; it was higher by 38, 29 and 24% in comparison with Saturna, Agria and Asterix varieties. TP content was not significantly affected by fertilization with mineral fertilizers.

scholarly journals SUBJECTIVE EVALUATION OF THE ENVIRONMENTAL QUALITY IN CHINA’S INDUSTRIAL CORRIDORS

2016 ◽  
Vol 24 (1) ◽  
pp. 21-36 ◽  
Author(s):  
Jian XU ◽  
Mei ZHANG ◽  
Long SHAO ◽  
Jian KANG
Keyword(s):  
Environmental Pollution ◽  
Natural Environment ◽  
Subjective Evaluation ◽  
Video Recording ◽  
Extraction Techniques ◽  
Public Facilities ◽  
Comfort Levels ◽  
Evaluation Scores ◽  
Medium Level ◽  
Questionnaire Surveys

Based on 270 questionnaire surveys in 8 cities of 5 industrial corridors in China, this study aims to examine the effects of industry construction on the evaluation of environmental pollution, natural environment, built environment, personal perception and development and policy. The results show that the evaluations on environmental pollution and landscape design are both below the medium level, but the evaluations of the living comfort and safety are both above the medium level. Further analysis, females usually give lower evaluation scores than males, and age and health situations are negatively related to the evaluation results; People indicate a great desire to reduce the environmental pollution and protect the natural environment. Moreover, the landscape was analysed using colour extraction techniques based on video recording, there are significant correlations between industrial pixel ratio and evaluation results of air quality, vegetation pixel ratio and evaluation results of river water quality, and public facilities pixel ratio and evaluation results of comfort levels.

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