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The species Holaspina alstoni (Evans, 1956) from the family Parholaspididae Evans, 1956 was collected in the soils of three different Hungarian greenhouses. This is the first record of this family, the genus and the species in Hungary. A new key to the European parholaspidid mites is presented.

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( Sukhorukov et al . 2023 ). Banana has been produced in a limited area in Türkiye for over a century; but production has increased for the last two decades because of adoption of protected production in basic greenhouses to tackle with unsuitable weather

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2007 2 122 137 Baron R. Sectoral approaches and carbon markets, 6 th IETA Forum on the State of the Greenhouse Gas Market , 8

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sector; thus, these countries now account for more than 30% of plastic production (PLASTIC EUROPE, 2019). In Europe, 3.4% of 51.2 million tons of the converted is used in protective cultivation, e.g., greenhouses, mulching, packaging, nurseries, and

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The damage caused by root-knot nematodes (Meloidogynidae) (irregular galls of different sizes on the plant roots) is a general problem in greenhouses in Hungary.The effect of Trifender microbiological preparation has been investigated on the degree of damage caused by root-knot nematodes in green-house pepper. We set up our experiment in Pusztamonostor (Jászság region, Hungary) in a family farm in 2008 and 2009. We carried out preliminary evaluation (Zeck-scale; 0–10) in the precrop with symptomatic assessment. According to the preliminary evaluation, the infection showed rates of 2–3 on the average.The results of 2008 show that Trifender had no effect on the number of females, but the plant height has been increased by 12 and 15%, and yield has grown by 25–35%. But on the contrary, in 2009 the number of females was decreased by 33%, and plant height was increased by 11%.

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The primary (1 st year) and the after-effects (2 nd , 3 rd year) of N fertilizers (KNO 3 , NH 4 Cl) on the soil-plant-atmosphere system were studied in a three-year greenhouse pot experiment with and without maize plants. The two- and three-year balances of the fertilizer N uptake and gaseous N losses were also analyzed. The cumulative values of the gaseous losses showed a similar trend in all years, significant differences were not obtained. On the basis of the three-year balance, the gaseous loss in the planted and unplanted pots was 18-22% and about 37-39%, respectively. Consequently, there was a 50% decrease in denitrificated gaseous losses of fertilizer N due to plant N uptake. The cumulative gaseous loss, calculated by the difference method, was significantly higher in cases of KNO 3 applications than in NH 4 Cl treatments, as an assumed  consequence of the intensive denitrification. It was found that the gaseous loss was not influenced by soil moisture.  In contrast to the gaseous losses, the values of plant N uptake and soil mineral N content showed significant differences in the years studied, as a result of the quick transformation of mineral N to organic N, the non-complete homogenization of the total soil amount, the seasonal climatic differences in the greenhouse during the years studied, and consequently the different microbiological activity. The plant N uptake was found to depend significantly on the fertilizer N form. Results obtained by the difference method and the 15 N-tracer technique were very similar. In the case of KNO 3 treatment and higher soil moisture (WHC = 80%) plant N uptake was more intensive, ranging between 48-57% (calculated by the difference method), and 35-51% (calculated by the 15 N- tracer method) in the first year (1993). It can be concluded that 60-100% of the fertilizer N was used from the soil by plant uptake and gaseous losses, which depends mainly on the treatments and the soil moisture during the first year. These values changed between 7-17% in the 1 st year after-effect and between 1-5% in the 2 nd year after-effect.

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Journal of Thermal Analysis and Calorimetry
Authors:
T. Tahri
,
S. Abdul-Wahab
,
A. Bettahar
,
M. Douani
,
H. Al-Hinai
, and
Y. Al-Mulla

Abstract  

A theoretical model is formulated in this Part 1 of the paper for simulating the physical process of condensation of the humid air in the condenser of seawater greenhouse that is located in Muscat, Oman. Analyses to the equations, in addition to the theoretical developments of the proposed model are discussed.

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In 2003 the Institute for Plant Protection in Agriculture and Forestry of the Republic of Croatia started a national survey of the possible occurrence of quarantine Thysanoptera species for the EU ( Scirtothrips spp., Thrips palmi Karny) in greenhouses in Croatia. The survey was continued yearly until 2006. This project involved the most important producers of vegetables and flowers in greenhouses and importers of pot plants and cut flowers. Eventual presence of especially T. palmi was checked in glasshouses and plastic greenhouses at 45 localities in 12 continental and 5 Mediterranean counties of Croatia. A total of 26 Thysanoptera species were recorded in the greenhouses, of which 14 species were collected from plant material, 13 were from blue sticky boards and 17 were from yellow sticky boards. Compared to the latest check list of Thysanoptera in Croatia, the following species were recorded for the first time for the country: Echinothrips americanus, Hercinothrips femoralis, Parthenothrips dracaenae and Thrips simplex . The survey did not establish the presence of EU quarantine Thysanoptera.

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Recent years of studies have suggested that the common crab spider (Xysticus kochi) has a great potential against the western flower thrips (Frankliniella occidentalis) . The efficiency of applying a single predator against a pest however, is made uncertain by many different factors. Using a mixture of predators on the other hand, can overcome the difficulties of using a single-species agent, since different predators have different environmental demands and preying habits. Our experiments involved releasing a non-selected assemblage of arthropods, collected by sweep-net in alfalfa and stinging nettle, into greenhouse pepper stands. Interestingly, while there were twice as much thrips in the experimental greenhouses than in the control (mainly conventional) ones, crop yields were similar. The ratio of predators-preys in experimental greenhouses was not different from that in the control greenhouses, too. Probably the release of predators and lack of chemical treatments in experimental stands resulted in a 43% increase in the amount of Orius species. In search of a cost-effective, environment-friendly pest management method, the application of a mass-collected, non-selected assemblages of arthropods has a definite potential. Further investigations are needed to increase the efficiency and to monitor the potential drawbacks of this method.

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Simulation of the condenser of the seawater greenhouse

Part II: Application of the developed theoretical model

Journal of Thermal Analysis and Calorimetry
Authors:
T. Tahri
,
S. Abdul-Wahab
,
A. Bettahar
,
M. Douani
,
H. Al-Hinai
, and
Y. Al-Mulla

Abstract  

A theoretical model is developed in Part I of this study to simulate the physical process of condensation of the humid air in the condenser of an existing seawater greenhouse that is located in Muscat, Oman. Application is conducted in this part to validate the theoretical developments. Comparisons are made between the predictions and the existing experimental results. The results indicate that the comparison is well consistent. The effect of the relative humidity, the dry bulb temperature and the solar radiation are also discussed to see their effects on the condensate values.

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