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The Effect of Z-ion Zeolite Substrate on Growth of Zea mays L. as Energy Crop Growing on Marginal Soil

Chomczyńska Mariola, Zdeb Magdalena

Journal of Ecological Engineering

2019

Vol. 20, nr 9

253--260

The presented study aimed at determining the influence of the increasing dose of new Z-ion zeolite substrate on the growth of maize (Zea mays L.) as species belonging to energy crops. In order to achieve the study aim, the pot experiment was carried out where the plants were grown on six series of media i.e.: on marginal soil (the control series I), on arable soil (the control series II) and on four mixtures of marginal soil with increasing Z-ion substrate addition (1%, 2%, 5%, 10 % v/v). The pot test was carried out in a phytotron with a 13/11 light/dark regime. After the end of the experiment, the mean values of the vegetative parameters (wet and dry biomass of roots and stems) characterizing the plant growth in particular media series were determined. The C:N ratio for maize stems was calculated as well. The obtained study results showed a favorable influence of Z-ion substrate additions on the vegetative growth of maize. Already a 1% (v/v) substrate addition to marginal soil increased the wet and dry stems biomass by 173–204%. At the same time, it turned out that in the sixth week of plant growth, a 5% substrate addition to the marginal soil enables to achieve the value of vegetation parameters at a level similar to that of the parameters characterizing the plant development on arable land. Thus, at an early stage of plant growth, a 5% substrate dose can be considered as one allowing a similar course of maize growing on marginal soil as in the case of arable soil. It is worth noting that at this substrate dose, the C:N ratio in maize stems reached the value of 13.05, at which the plant biomass is the substrate ensuring the fairly proper course of methane fermentation supplying fuel in the form of biogas.

Identification of the occurrence of marginal agricultural lands with the GIS

Ostrowski J.

Journal of Water and Land Development

1999

no. 3

7-20

Within the research project: "Rationalization of marginal soils utilization" a database on the distribution of marginal soils based on natural criteria and included in the spatial information system has been developed in IMUZ. The main aim of the study was to identify and inventory marginal croplands in the regional scale. Basing on elaborated definitions and criteria for distinguishing marginal soils and habitats, a possibility of their identification upon the available cartographic documentation was analyzed. The possibility to inventory four types of marginal soils (sandy, erosive, polluted and mountain) on arable lands and five types of marginal habitats (bog, protected, extremely wet, polluted and mountain) on grasslands was demonstrated. For enlisted types of marginal soils and habitats, identification models in tabular form were built, which, after transformation into algorithms, were introduced into processing module in the created spatial information system. Elaborated identification system was tested on four regions differing in agricultural and natural conditions. The inventory of potential marginal croplands in the regional scale was found to be possible using computer techniques and collecting data acquired from the existing thematic maps. Obtained results confirm regional specifics of surface structure and sets of typical marginal soils and habitats. One of the main objectives of the research project: "Rationalization of marginal soils utilization" was to solve the problem of their identification and inventory in the regional and country scale. This paper presents principles of identification of marginal croplands based on the existing thematic maps and using elaborated identification models to build transformation algorithms in the spatial information system. Additionally, results of the inventory of marginal agricultural lands in selected regions are presented.

W ramach projektu badawczego zamawianego "Racjonalizacja wykorzystania gleb marginalnych" w utworzono IMUZ bazę danych o rozmieszczeniu gleb marginalnych w oparciu o kryteria przyrodniczo-rolnicze ujętą w system informacji przestrzennej. Głównym celem badań była identyfikacja i inwentaryzacja w skali regionu marginalnych użytków rolnych. W oparciu o opracowane w ramach projektu definicje i kryteria wyodrębniania gleb i siedlisk marginalnych dokonano analizy możliwości ich identyfikacji na podstawie dostępnej dokumentacji kartograficznej. Wykazano, że jest możliwe zinwentaryzowanie czterech rodzajów gleb marginalnych (piaskowe, erozyjne, zanieczyszczone, górskie) na gruntach ornych i pięciu rodzajów siedlisk marginalnych (bagienne, chronione, ekstremalnie uwilgotnione, zanieczyszczone, górskie) na użytkach zielonych. Dla wymienionych rodzajów gleb i siedlisk marginalnych zbudowano w formie tabelarycznej modele identyfikacyjne, które po przekształceniu w algorytmy, wprowadzono do modułu przetwarzania w utworzonym systemie informacji przestrzennej. Opracowany sposób identyfikacji przetestowano na czterech różniących się warunkami przyrodniczo-rolniczymi regionach kraju wykazując, że można poprzez zastosowanie techniki komputerowej i zgromadzenie danych pozyskanych z istniejących map tematycznych inwentaryzować potencjalne marginalne użytki rolne w skali regionu, przy czym uzyskane wyniki potwierdzają regionalną specyfikę struktury powierzchniowej oraz układów rodzajowych gleb i siedlisk marginalnych.