The influence of nitrogen fertilization with ENTEC-26 and ammonium nitrate on the concentration of thirty-one elements in carrot (Daucus carota L.) storage roots

Abstract

Simultaneous application of nitrification inhibitors and nitrogen fertilizers (containing reduced forms of nitrogen (ammonium and urea) can increase soil acidification caused by these fertilizers. As a result, it can lower soil reaction (pH) and influence the content of available forms of heavy metals and trace elements. The aim of the study was to evaluate the effect of the application of: ENTEC-26 (containing 3.4-dimethylpyrazol phosphate /DMPP/-nitrification inhibitor) and ammonium nitrate on the mineral composition of carrot storage roots. A two-year research was conducted with field cultivation of the carrot cultivar Kazan F 1. The experiment was arranged in a split-plot design with four replicates. The following combinations with different N fertilization were distinguished: 1-control (without N fertilization), 2-ENTEC-26 35+35, 3-ENTEC-26 70+70, 4-ENTEC-26 105+105, 5-ammonium nitrate 35+35, 6-ammonium nitrate 70+70, 7-ammonium nitrate 105+105, where: 35+35, 70+70 and 105+105 denote nitrogen doses (kg N ha-1) used for pre-plant fertilization and top-dressing, respectively. In carrot storage roots as well as in soil after carrot cultivation, concentrations of Ag,

Content of some chemical components in carrot (Daucus carota L.) roots depending on growth stimulators and stubble crops

“…The content of minerals (N, P, K, Ca, Mg, Na) in carrot roots found in the present experiment was close to the standard values and similar to the results obtained by other authors (KaacK et al 2001, Dyśko, KaniSzewSKi 2007, majKowSKa-gadomSKa, wierzbicKa 2010, Smoleń et al 2012. The growth stimulators used in the experiment did not have a major effect on the content of total nitrogen, phosphorus and potassium in carrot roots.…”

“…While the chemical composition of carrot roots is a cultivar-specific character, it is also affected by agronomic factors, of which fertilization exerts the strongest impact on the content of nutrients (KaacK et al 2001, Singh et al 2012, Smoleń et al 2012. Expectations have been aroused by environmentally friendly methods of plant growth stimulation through the use of biostimulators or cover cropping, which have a beneficial effect on the nutritional composition of roots (DobrzańSki et al 2008, KwiatKowSKi et al 2013.…”

Effect of Aerated Compost Tea on the Growth Promotion of Lettuce, Soybean, and Sweet Corn in Organic Cultivation

“…In a research conducted by Gorlach and Mazur (2002) , nitrogen losses were greater in applied fertilizer containing oxidized form of nitrogen (NO − 3 -N) than in those containing reduced form of nitrogen (NH + 4 -N and NH 2+ 2 -N) present in physiologically acid fertilizers such as urea and ammonium sulfate. Owing to these chemical properties, nitrogen fertilizers could affect the soil pH and influence the availability of microelements and heavy metals in plants ( Smole’n et al, 2012 ).…”

Suitability of some nitrogen fertilizers for the cultivation of early cabbage

“…Research on nitrification inhibitors conducted with products such as nitrapyrin (2-chloro 6-trichloromethyl pyridine) and DCD (dicyanamide) did not translate into a widespread commercial use in vegetable crop production (Hendrickson et al 1978, kołota, doBRomilska 1985, amBerGer 1986, frYe et al 2002, HocHmutH 2003. Recently, a new formula of a nitrogen fertilizer containing DMPP nitrification inhibitor (3, 4 dimethylpyrazole phosphate) has been developed and made available under the commercial name ENTEC 26 (HäHndeL, zeruLLa, 2000, hähndel, stRohm 2001, Pasda et al 2001, PasChold et al 2008, kołota, Cho-Hura 2008, Li et al 2008, adamCzewska-sowińska, kRyGieR 2014, smoleń et al 2013. Many field studies have demonstrated its higher efficiency than soluble N sources, expressed either by an increased yield level or a lower demand for N application.…”