Influence of the new complex mineral fertilizer Nitroammophoska-M on the yield and quality of parsnip

Visnyk LNAU: Agronomy 2020 №24: 93-98

Influence of the new complex mineral fertilizer Nitroammophoska-M on the yield and quality of parsnip

I. Dydiv, Candidate of Agricultural Sciences
ORCID ID: 0000-0001-8605-1092
O. Dydiv, Candidate of Agricultural Sciences
ORCID ID: 0000-0003-4155-5945
A. Dydiv, Candidate of Agricultural Sciences
ORCID ID: 0000-0002-4436-9008
M. Yuzkiv, Master of Science
ORCID ID: 0000-0001-9904-7586
Lviv National Agrarian University
L. Hajko, Master of Science
ORCID ID: 0000-0001-5293-8402
Siedlce University of Natural Sciences and Humanities

https://doi.org/10.31734/agronomy2020.01.093

Annotation

Parsnip plants need a set complex of elements for their full-fledged growth and development. One of such fertilizers, which combines macro- and microelements, is a new domestic complex mineral fertilizer of prolonged action called Nitroammophoska-M.

The Nitroammophoska-M fertilizer was used in the form of water-soluble granules. The research results confirmed, that at growing parsnips on the crests, the use of complex mineral fertilizers Nitroammopphoska M at norm N54P108K132 secured the highest yield – 50.1 t/ha, that exceeded control (without fertilizer) by 14.8 t/ha or 41.9%. The studies have shown that, the application of Nitroammophoska-M at norm N36P72K88 result in the yield of parsnip roots at the level of 46.9 t/ha, which was by 1.5 t/ha less than the norm N72P144K176. Applying high norms of fertilizer Nitroammophoska-M, the researchers note a tendency to reduction of the yield of parsnips. The highest yield of marketable roots parsnip (91 and 92 %) was obtained in the variants when mineral fertilizers were applied in the norms N36P72K88 and N54P108K132 kg/ha active substance.

The complex mineral fertilizer Nitroammophoska-M improves the quality of parsnip roots, in particular, the highest dry matter content (20.8 %) is obtained by applying the norm N54P108K132. The highest concentration of total sugar (12.1%) is obtained by applying a complex mineral fertilizer at norm N54P108K132. It is worth noting that application of Nitroammopghoska-M causes the concentration of ascorbic acid varies from 21.5 mg/100g (N54P108K132) to 18.6 mg/100 g (N72P144K176), remaining 17.6 mg/100 g in control (without fertilizers). The level of nitrate nitrogen in all variants of the experiment did not reveal the maximum allowable concentration. The lowest nitrate concentration was in the variant of application of Nitroammophoska-M at norm of N18P36K44 kg/ha of active substance.

Key words

parsnip, Nitroammophoska-M, yield, marketability, quality, nitrates

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