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1

Yield-Forming Effects of Herbicide and Biostimulants Application in Potato Cultivation

100%

Zarzecka K. , Gugała M. , Mystkowska I. , Sikorska A.

Journal of Ecological Engineering

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2022

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tom Vol. 23, nr 3

137--144

EN

A field experiment was carried out in 2018-2020 in central-eastern Poland. The aim of the study was to determine the effect of different methods of applying herbicide and herbicide with biostimulants on the yields of dry matter, starch and protein. The experiment was established using the split-plot method, in which the first factor were two potato varieties (Oberon and Malaga), and the second factor involved five methods of applying herbicide and herbicide with biostimulants (1. control object, 2. clomazone herbicide + metribuzin, 3. clomazone herbicide + metribuzin + PlonoStart biostimulant, 4. clomazone herbicide + metribuzin + Aminoplant biostimulant, 5. clomazone herbicide + metribuzin + Agro-Sorb-Folium biostimulant). Potato varieties and methods of herbicide and biostimulant application significantly influenced the yield of dry matter, starch and protein. The highest yields of the above-mentioned tuber components were obtained from objects 5 and 3 sprayed with herbicide with the Agro-Sorb-Folium and PlonoStart biostimulants. The weather conditions prevailing in the years of the research were also decisive for the yield of protein collected from the area unit.

2

The Effect of Foliar Nutrition with Sulphur and Boron, Amino Acids on Morphological Characteristics of Rosette and Wintering Winter Rape (Brassica napus L.)

100%

Sikorska A. , Gugała M. , Zarzecka K.

Journal of Ecological Engineering

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2019

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tom Vol. 20, nr 6

190--197

EN

The field experiment was carried out in 2016-2019 at the Agricultural Experimental Station – Zawady belonging to the University of Natural Sciences and Humanities in Siedlce. The experiment was established in a random splitplot system in three repetitions. The surface of one plot was 21 m-2. The examined factors were: I – three varieties of winter rape: Monolit (population variety), PX115 (hybrid variety restored with a semi-dwarf growth type), PT248 (hybrid variety restored with a traditional growth type); II – four types of foliar feeding: 1. control object (without foliar feeding and biostimulator), 2. biostimulator Aminoplant, 3. Foliar fertilizer Siarkomag + foliar fertilizer Bormax, 4. Foliar fertilizer Siarkomag + foliar fertilizer Bormax + biostimulator Aminoplant. The aim of the study was to determine the effect of foliar nutrition on the number of leaves in the rosette, elevation height of the cone of growth, root collar diameter, length of pile root and wintering of three varieties of winter rape. Foliar nutrition with sulphur, boron combined with amino acids increased the number of rosette leaves (on average by 27.1%), root diameter (on average by 11.0%), pile root length (on average by 9.7%) and provided the best wintering of plants compared to the control variant. Irrespective of the foliar nutrition used, the elevation height of the growth cone was the same. The genetic factor did not affect the number of leaves in the rosette. The population morphotype and the long-stemmed hybrid had the same elevation height of the growth cone, while the population variety was distinguished by the greater diameter of the root neck, while the restored hybrid with the traditional type of growth with a longer pile root compared to the remaining varieties. Diverse climatic conditions prevailing during summer and autumn vegetation and winter dormancy in the years of research have influenced the cut of plants and wintering.

3

The Leaf Greenness Index SPAD and Selected Features of Potato Following an Application of Herbicides and Biostimulants

100%

Zarzecka K. , Gugała M. , Mystkowska I. , Sikorska A.

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tom Vol. 22, nr 8

54--63

EN

The objective of the research was to determine the effect of herbicides and herbicides combined with biostimulants on the leaf greenness index SPAD and selected potato characteristics, i.e. plant height, yield of large tubers and the vitamin C content. A three-year experiment was conducted to examine the following factors: factor I – three potato cultivars: Bartek, Gawin, Honorata; factor II – five methods of an application of herbicides and biostimulants: 1. control unit without chemical control, 2. the Harrier 295 ZC herbicide (linuron + clomazone), 3. the Harrier 295 ZC herbicide (linuron + clomazone) and the Kelpak SL biostimulant (Ecklonia maxima), 4. the Sencor 70 WG herbicide (metribuzin), 5. the Sencor 70 WG herbicide (metribuzin) and the Asahi SL biostimulant (sodium para-nitrophenol, sodium ortho-nitrophenol, sodium 5-nitroguaiacol). The cultivars investigated in the experiment significantly affected the leaf greenness index SPAD, plant height, yield of large tubers and the vitamin C content. The herbicides and biostimulants enhanced the values of the examined potato characteristics. Linear correlation coefficients confirm a strong, significant, positive correlation between the SPAD index and plant height, yield of large tubers and vitamin C content.

4

The Effect of Microorganisms and Inorganic Preparations Applied into the Soil and Leaves on the Yield of Winter Rape (Brassica Napus L.)

100%

Sikorska A. , Gugała M. , Zarzecka K. , Domański Ł.

Journal of Ecological Engineering

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2024

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tom Vol. 25, nr 1

27--36

EN

The research was carried out in 2018-2021 at the Agricultural Experimental Station, in Poland. The factors of the experiment were three morphotypes of winter oilseed rape: population morphotype, long-stemmed morphotype, semi-dwarf morphotype. The second factor of the experiment corresponded to three ways of using the preparations: 1. Control variant, 2. Organic preparation (Ugmax) 3. Biostimulator containing P2O5 and K2O, 4. Biostimulator containing silicon. The aim of the study was the reaction of three morphotypes of winter rape to soil and foliar application of microorganisms as well as inorganic preparations in different growing seasons. Elements of yield structure and yielding of winter rape were determined by a genetic factor. In all growing seasons, the best yielding was in the restored hybrid with the traditional type of growth, while the seed yield of the semi-dwarf form was lower by 5.8% on average, and by 10.0% on average in the population form. The number of seeds in the pod and the value of the yield index (HI) was the most favourable in the restored forms, and the thousand-seed weight and yield in the population form. The preparations applied to the soil and leaves increased the parameters of yield structure and yielding in all tested cultivars. Soil preparation with microorganisms as well as micro and macro elements applied in autumn before sowing seeds and in spring in the BBCH 21-36 phase significantly increased the number of seeds per pod by 3.4% on average; weight of a thousand seeds by 3.5% on average, seed yield by 15.7% on average, straw yield by 4.5% on average compared to the control variant. The ratio of seed yield-to-biomass yield was higher in the heterosis cultivars by an average of 9.2% compared to the population cultivar. The elements of the yield structure as well as the main and by-products were the highest in the growing season with the highest annual rainfall and the highest average air temperature.

5

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

88%

Mystkowska I. , Zarzecka K. , Ginter A. , Gugała M. , Sikorska A.

Journal of Ecological Engineering

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2023

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tom Vol. 24, nr 2

247--255

EN

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.