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Total and Protein Nitrogen Content in Potato Tubers under the Influence of Various Care and Nutrition Methods with the Use of Biostimulants

Mystkowska Iwona, Zarzecka Krystyna, Ginter Agnieszka, Gugała Marek, Sikorska Anna

Journal of Ecological Engineering

2023

Vol. 24, nr 2

247--255

A two-factor field experiment was carried out in 2018–2020 at the Zawady Agricultural Experimental Station (52°03’ N and 22°33’ E) belonging to the University of Natural Sciences and Humanities in Siedlce in Poland. Tubers of two edible potato cultivars were investigated, i.e. Oberon and Malaga – factor one; in turn, factor two included variants of herbicide application with biostimulators: 1. control object – without preparations, 2. herbicide clomazone + metribuzin (Avatar 293 ZC), 3. herbicide clomazone + metribuzin and biostimulant PlonoStart, 4. herbicide clomazone + metribuzin and biostimulant Aminoplant, 5. herbicide clomazone + metribuzin and biostimulant Agro-Sorb® Folium. The biostimulators used in the research significantly increased the content of total nitrogen and protein nitrogen in tubers, as well as the share of protein nitrogen in total nitrogen in relation to the tubers collected from the control object. The genetic features of the cultivars also determined the concentration of total nitrogen and protein nitrogen in potato tubers.

Influence of Pre-Sowing Application of Mineral Fertilizers, Root and Foliar Nutrition on Productivity of Winter Triticale Plants

Bielashov Oleh, Rozhkov Arthur, Kalenska Svitlana, Karpuk Lesia, Marenych Mykola, Kuts Oleksandr, Zaitseva Iraida, Romanov Oleksii, Muzafarov Nail

Ecological Engineering & Environmental Technology

2022

Vol. 23, iss. 6

1--14

The purpose of the research was to develop and scientifically substantiate the system of nutrition of winter triticale crops to optimize their production process and increase plant productivity in the Northern Steppe of Ukraine. The highest number of grains in the ear of the main and lateral stems of winter triticale was in the variants where foliar nutrition with a mixture of carbamide, magnesium sulfate and complex fertilizer Ferkrystal Summum during the 31st and 39th microphases and the variants where the third foliar nutrition during the 73th microphase on the background of root application of ammonium nitrate at a dose of 150 kg/ha was conducted. In these variants, the number of grains in the ear on average over the years and variants for pre-sowing fertilization was 40.6 and 40.0 pieces, respectively, which is 11.2 and 11.5%, respectively, more than in the control. Carrying out three foliar nutrition with a mixture of carbamide, magnesium sulfate and complex fertilizer Fercrystal Summum on the background of root nutrition of ammonium nitrate during the 22nd microphase provided an increase in grain weight from the ear and lateral stems of winter triticale compared to the control (application of ammonium nitrate at the dose of 150 kg/ha on frozen thawed soil) by 0.24 and 0.23 g, respectively, or by 14.8 and 15.4%. The studied variants of pre-sowing application of mineral fertilizers significantly affected the parameters of productive plant stand (the number of plants and lateral productive stems), while nutrition provided significant changes in the parameters of grain productivity of winter triticale plants. On the basis of the researches, during winter triticale cultivation, the farms in the Northern Steppe of Ukraine are recommended to carry out pre-sowing application of ammophos (N12P52), to apply ammonium nitrate (N50) for roots in the 22nd microphase in spring and carry out two foliar nutrition in the 31st and 39th microphases with a mixture of carbamide (N10), hepatic magnesium sulfate (1.5 kg/ha) and complex water-soluble fertilizer Ferkrystal Summum.