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Effect of silicate fertilizers on yielding of greenhouse cucumber [Cucumis sativus L.] in container cultivation

100%

Gorecki R. S., Danielski-Busch W.

Journal of Elementology

2009

tom 14

nr 1

71-77

Silicone (Si), a very abundant element in the Earth’s crust, is beneficial for plants, animals and humans. Despite its abundance in nature, it is often unavailable in sufficient quantities. Cucurbits are believed to accumulate elevated quantities of Si and benefit from Si fertilization. It is believed that higher Si content in cucumber plant is connected with increased yields as well as improved resistance to diseases and tolerance to abiotic stresses, for example drought. The beneficial effects of Si have been confirmed by the present study, in which cucumbers were grown in soil and in liquid nutrient solutions. The aim of the experiments has been to evaluate the effect of several silicates supplementing peatbased growing substrates on yield and Si content in growing media and in cucumber plants. For this purpose, pot experiments were carried out in an unheated greenhouse in 2005- 2007. Cucumber plants were cultivated in 12-liter containers filled with substrates amended with Na-, K-, Ca- and ammonium silicates at rates of 2 or 4 g per liter. The results indicated that slow-release Ca- and NH4-silicates contributed to increased yield and elevated Si content in cucumber leaves and fruits. The effect of the other silicates was not certain and, additionally, dependent on their concentrations. Water-soluble Na- and K-silicates caused increased Na or K concentration and raised pH of substrates. The results revealed that increased yields depended on the number of fruits rather than their average weight. The silicates of calcium and ammonium can be valuable, slow-release fertilizers in cucumber cultivation on organic (peat) substrates. Even in quantities as high as 4 g per liter of substrate, they did not cause drastic changes of the pH and salinity of growing media and were a good source of Si available to cucumber plants.

Utilization of waste wool as substrate amendment in pot cultivation of tomato, sweet pepper, and eggplant

100%

Gorecki R. S., Gorecki M. T.

Polish Journal of Environmental Studies

2010

tom 19

nr 5

Sheep wool can be a waste products of sheep husbandry. Its safe utilization evokes several serious problems. Therefore, it was of interest to check out the usefulness of wool as a fertilizer and/or substrate. The aim of the experiments reported in this paper was to evaluate the effect of the washed sheep wool used as an amendment to peat-based growing substrate on growth and yield of tomato, sweet pepper, and eggplant. The layer of wool was spread on 5 cm thick strata of substrate and covered with the same substrate at a rate of 10 g wool per 1 dm3 of substrate. Plants were grown individually in containers. It was stated that the addition of wool caused up to 33% higher yields, especially for tomato and pepper. Wool amendment caused changes in nutrients content of substrate and leaves. Thus, sheep wool can serve as a valuable and environmentally friendly fertilizer.

Ograniczanie wyników

1 Journal of Elementology

1 Polish Journal of Environmental Studies

2 Gorecki R. S.

1 Danielski-Busch W.

1 Gorecki M. T.

1 2010

1 2009

Wyniki wyszukiwania

Effect of silicate fertilizers on yielding of greenhouse cucumber [Cucumis sativus L.] in container cultivation

Utilization of waste wool as substrate amendment in pot cultivation of tomato, sweet pepper, and eggplant