Changes of sulphur availability in soils under different nitrogen fertilization levels in a long-term field experiment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F18%3A00005016" target="_blank" >RIV/00027006:_____/18:00005016 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Changes of sulphur availability in soils under different nitrogen fertilization levels in a long-term field experiment

Original language description

Sulphur represents one of the most important nutrients necessary for plants. The deficiency of sulphur has been observed in agricultural soils for several decades and is related to environmental legislations in the Czech republic limiting sulphur pollution by power plants. The long-term field experiment with organic, mineral and organo-mineral fertilization began in 1984 on Cambisol soil in highlands at Lukavec u Pacova. The crop rotation was potatoes – winter wheat and winter barley with intercrop (usually white mustard). The mineral fertilization, farmyard manure (FYM - 30 t/ha) and straw (remaining postharvest residues) represented three basic combinations of fertilization. Each of basic combinations was fertilized with 0 - 40 - 80 -120 - 160 kg N/ha and with exception of 0 N. No systematic treatment with sulphur was carried out. The average of wheat yields increased significantly (p ? 0.001) according to ANOVA test. The yields of the wheat grain and straw responded to nitrogen supply and the best yields were generally obtained under the maximum dose of 160 kg N ha-1. The S concentrations in wheat grain and straw under mineral and organic fertilization tended to increase according to the nitrogen dose. Similarly, the sulphur uptake by grain and straw increased significantly. The maximum sulphur uptake by winter wheat reached 18-19 kg S ha-1 for higher N doses probably due to synergic effect of higher yields and S concentrations in plants. Concerning soils, the sulphur content increased according to nitrogen fertilization up to 120 kg ha-1 for all three fertilization systems (mineral, FYM and straw). The highest nitrogen dose (160 kg N ha-1) decreased the sulphur content in soil. This decrease is not possible to explain by simple S uptake by plants as only in straw treatment the decrease of S-uptake was noted at 160 kg N ha-1. The soils our field experiment were not systematically fertilized with sulphur, higher S content in soils can be ascribed to mineralization processes in soils, which at the end lead to the S leaching and S losses from soils.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Project

<a href="/en/project/QJ1530171" target="_blank" >QJ1530171: Extention of applicability and actualization of categories for determination of the content of available macro and microelements in a soil for ensuring of the sustainability of fertility and productive capability of agricultural soils</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů