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Artur Szwalec, Paweł Mundała and Renata Kędzior

Abstract

Electricity and heat have been produced in Poland by the combustion of coal. Ash-slag, a by-product of this process, has been mainly deposited in landfills. Until the end of 2011, about 258 million tonnes of ash-slag have been deposited in landfills. Herbaceous plant and soil samples were taken from four directions (east, west, south and north) in three locations on the landfill embankment: base, middle and top. The negative influence of furnace waste landfill on herbaceous plants was confirmed by the phytoaccumulation indexes (WF) of the examined elements: WF Cd - medium to intensive; WF Pb - low to medium; WF Zn - low to intensive and WF Cu - low to medium.

Open access

Elżbieta Jędrszczyk, Barbara Skowera, Renata Kędzior and Maria Gawęda

Abstract

The aim of the study was to evaluate the effect of ethephon application (Agrostym 480 SL) on the yield and yield structure of five processing tomato cultivars (Rumba, Hubal, Sokal F1 , Mieszko F1 and Polset F1 ). The experiment was carried out in the open field in the years 2009-2011 in Mydlniki near Kraków, Poland. Two weeks before harvesting, half of the plants of each cultivar were treated with Agrostym 480 SL (3 dm3 ha-1) and the other half were left as a control without spraying. Marketable yield included properly shaped and welldeveloped light red and red fruits. Non-marketable yield included pink and turning fruits, mature green and breaker fruits, and diseased fruits. A generalized linear model (GLM) for Poisson distribution with the log link function was used to determine the relationship between the years of the study and cultivar and selected values of the yield structure. The yield structure of tomato depended significantly on the weather conditions during the growing period in different years of the study, on the cultivar, and on the use of ethephon. Ethephon had a particularly beneficial effect on yield structure in the years with an unfavourable distribution of precipitation. Ethephon application in the years 2009 and 2010 had a beneficial effect on the health of tomato plants.