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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F18%3A00004967" target="_blank" >RIV/00027006:_____/18:00004967 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

The permanent organic nitrogen long-term field experiment with organic, mineral and combined organic and mineral fertilization was founded in the year 1984 in Lukavec u Pacova. The experiment was divided into three basic blocks: 1) mineral fertilization; 2) fertilization with farmyard manure and combinations with mineral fertilization; 3) straw and combinations with mineral fertilization. The farmyard manure (FYM) was added in dose of 30 t/ha each third year to potatoes, the straw remained in the relevant plots after cereals harvest. Each of basic combinations was fertilized with 0 - 40 - 80 -120 - 160 kg N/ha and with exception of 0 N treatments also with 35 P kg/ha and 83 K kg/ha (PK treatments). The total bioavailable phosphorus content in soils was determined by Mehlich 3 extract. The yields of the wheat grain and straw corresponded well to nitrogen supply and the highest yields were generally obtained under the highest dose 160 kg N ha-1. It was possible to observe such a diluting effect in P concentrations in wheat grain in treatments with only mineral fertilizers whereas the FYM increased the P concentrations in plant tissues. However, the observed decrease o P content in soils following the N fertilization showed that adequate nitrogen fertilization of soils is indispensable for maintaining the right phosphorus supply in agricultural soils.

Název v anglickém jazyce

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

Popis výsledku anglicky

The permanent organic nitrogen long-term field experiment with organic, mineral and combined organic and mineral fertilization was founded in the year 1984 in Lukavec u Pacova. The experiment was divided into three basic blocks: 1) mineral fertilization; 2) fertilization with farmyard manure and combinations with mineral fertilization; 3) straw and combinations with mineral fertilization. The farmyard manure (FYM) was added in dose of 30 t/ha each third year to potatoes, the straw remained in the relevant plots after cereals harvest. Each of basic combinations was fertilized with 0 - 40 - 80 -120 - 160 kg N/ha and with exception of 0 N treatments also with 35 P kg/ha and 83 K kg/ha (PK treatments). The total bioavailable phosphorus content in soils was determined by Mehlich 3 extract. The yields of the wheat grain and straw corresponded well to nitrogen supply and the highest yields were generally obtained under the highest dose 160 kg N ha-1. It was possible to observe such a diluting effect in P concentrations in wheat grain in treatments with only mineral fertilizers whereas the FYM increased the P concentrations in plant tissues. However, the observed decrease o P content in soils following the N fertilization showed that adequate nitrogen fertilization of soils is indispensable for maintaining the right phosphorus supply in agricultural soils.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

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

Projekt

<a href="/cs/project/QJ1530171" target="_blank" >QJ1530171: Rozšíření využitelnosti a aktualizace kategorií pro stanovení obsahu přístupných makro a mikroživin v půdě v rámci zajištění trvale udržitelné úrodnosti a produkční schopnosti zemědělských půd</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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