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Jakość gleb wybranych ogrodów działkowych Łodzi

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Niewiadomski A., Szubert Ł., Katedra Geografii Fizycznej W. N. G., pl b. g. u. l.
Acta Universitatis Lodziensis. Folia Geographica Physica
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2014
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vol. 13/2014
XX
cały artykuł
EN
The paper presents the research results of physical and chemical soil properties of allotment gardens in Łódź. 15 soil samples taken from humus layers were analyzed. In the selection of most allotment gardens the vicinity of major transport routes and industrial plants were accounted. Characterisation of the soil substrate was made taking into account the geological factors influencing the genetic and qualitative value of soil especially for agricultural production. Authors drew attention to the variability of soil properties and compared the obtained results to other Polish cities. It was found that the tested soils show high sorption capacities and low in comparison with other cities, degree of heavy metal (cadmium, chromium and copper) pollution. They also highlighted the significant production potential of soils of allotment gardens.
PL
Praca prezentuje wyniki badań wybranych właściwości fizykochemicznych gleb ogrodów działkowych Łodzi. Przeanalizowano próbki z poziomów akumulacyjnych 15 ogrodów, zlokalizowanych głównie w sąsiedztwie dużych ciągów komunikacyjnych i obiektów przemysłowych. Dokonano charakterystyki substratu glebowego z uwzględnieniem czynników geologicznych, wpływających na genetyczną i jakościową wartość utworów glebowych w zakresie produkcji rolniczej. Autorzy zwrócili uwagę na zróżnicowanie właściwości gleb i dokonali porównania uzyskanych wyników z rezultatami analiz gleb ogrodów działkowych innych miast Polski. Stwierdzono, że badane gleby wykazują duże zdolności sorpcyjne i niewielki, w porównaniu z innymi miastami, stopień zanieczyszczenia gleb metalami ciężkimi (kadmem, chromem i miedzią). Ponadto podkreślono znaczny potencjał produkcyjny gleb ogrodów działkowych.
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Effects of local liming materials on soil properties and yield of waterleaf (Talinum fructicosum (L.) Juss.) in an ultisol of southeast Nigeria

100%
Iren O. B., Uwah I. D.
World News of Natural Sciences
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2018
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vol. 21
53-63
EN
Soils of the tropics are generally acidic mainly due to the high and intensive rainfall that causes excessive loss of the basic cations. High soil acidity is often a limiting factor for plant growth. Liming is the most widely used method to neutralize acidity and improve crop performance. A field trial was conducted at two locations in the University of Calabar Teaching and Research Farm, Calabar, to determine the effects of local liming materials on soil properties and yield of waterleaf. Seven treatments consisting of wood ash (WA), oil palm bunch ash (OPBA), cocoa pod ash (COPA), periwinkle shell ash (PSA), cassava peels ash (CAPA), and carbide waste (CW), each applied at 8 t /ha, and a control (no lime applied) were laid out in a randomized complete block design with three replications. The result showed increase in soil pH from 4.5 before experiment to 5.93 in the plot treated with wood ash. Over all, soil organic carbon, available phosphorus, basic nutrients (Ca, Mg, K, Na) and base saturation were significantly (P < 0.05) increased in plots treated with lime materials. Plant height, number of leaves, number of branches, stem girth, leaf area, fresh and dry matter yield of waterleaf were all significantly increased. However, the highest mean fresh yield of 4.61 t/ha obtained from the WA treated plot was not significantly (P > 0.05) higher than the yield of 4.36 t/ha obtained from OPBA treated plots, but was higher significantly than other treatments. The fresh yield increase was 61, 58, 46, 45, 39 and 35%, while the dry matter yield percentage increase was 63, 56, 53, 50, 42 and 22 for WA, OPBA, COPA, PSA, CAPA and CW. Therefore, for amelioration of soil acidity and better crop performance in the acid Ultisol of Southeast Nigeria, application of either wood ash or oil palm bunch ash is recommended.
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Earth Observation and Geospatial techniques for Soil Salinity and Land Capability Assessment over Sundarban Bay of Bengal Coast, India

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Das S., Choudhury M. R., Das S., Nagarajan M.
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issue 2
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