21 research outputs found
Effect of extracts and pulp of sweet potato tuber (Ipomoea batatas [L]. Lam.) grown under conditions of climate and soil Polish growth of mold fungi
Ekstrakty roślinne stanowią cenne źródło substancji bakterio-
i grzybobójczych. Do tej pory przeprowadzono wiele
badań nad własciowościami bakterio- i grzybobójczymi
licznych surowców roślinnych, natomiast miąższ i ekstrakt
z bulw batatów nie były do tej pory w Polsce tematem szczegółowych
badań.
Celem badań przedstawionych w artykule było określenie
wpływu ekstraktu wodnego i miąższu z bulw batatów na aktywność
metaboliczną – wzrostową grzybów pleśni.
Rezultaty badań wskazują, że miąższ oraz ekstrakt wodny
z bulw batatów mogą być uznane za regulatory wzrostu grzybów.
Wykazano, że składniki miąższu bulw są dobrymi stymulatorami
wzrostu grzyba. Ekstrakt wodny z bulw hamował
aktywność wzrostową badanego organizmu.Plant extracts are a valuable source of antibacterial substances
and fungicides. To date, there have been many studies
of bactericidal and fungicidal properties of many plant
materials, while pulp and extract of the sweet potato tubers
were not so far in Poland, the subject of detailed studies.
The aim of this study was to determine the effect of the aqueous
extract and the pulp of sweet potato tubers on metabolic
activity - growth of mold fungi.
The results show that the sweet potatoes tubers and their
aqueous extracts can be considered as regulators of fungal
growth. It has been shown that the components of the pulp
are good stimulators of growth of the fungus. The aqueous
extract inhibited the growth of the test organism
Content of macroelements in tubers of several potato varieties depending on the foliar fertilization applied
The aim of the study was to determine the effect of foliar fertilizers containing macro- and microelements, and used in the form of chelates, on the content of macroelements in tubers of several potato varieties. The study was based on a 3-year (2013-2015) field experiment conducted in Haczow (49°39′40″N, 21°53′49″E), on brown, slightly acidic soil. The experiment was established using the method of random subblocks, where the first order factors were foliar fertilization treatments with the following fertilizers: Fortis Duotop Zn Mn + Fortis Aminotop (A), Fortis B Mo + Ferti Agro (B), Fortis Zn Mn + Fortis B Mo (C) and the control object, without foliar fertilization. The second order factors were 4 potato varieties belonging to different classes of earliness (Agnes, Jelly, Viviana, Vineta). Foliar application of all fertilizer combinations contributed to an increase in the magnesium content, while the application of Fortis B Mo + Ferti Agro fertilizers increased the nitrogen and potassium content. Genetic traits differentiated the content of macroelements. Tubers of the cultivar Jelly were characterized by the largest accumulation of phosphorus, potassium, magnesium and calcium, while the Viviana cultivar had the smallest amounts of phosphorus, potassium, calcium. The meteorological conditions in the years of the experiment modified the content of macroelements. Under the dry summer conditions but very wet September in 2013, the tubers accumulated most magnesium and calcium, but contained the least nitrogen, phosphorus and potassium. With excess precipitation in 2014, the tubers were found to contain the most phosphorus, potassium and calcium, while in the dry 2015 year, with a significant shortage of precipitation during the potato growing season and air temperature higher than the long-term average, the tubers accumulated the highest nitrogen but the lowest calcium amounts
Wpływ technologii uprawy na barwę miąższu surowych bulw ziemniaka
Results of the research were based on a field experiment carried out in 2014‒2016 at the Experimental Station of Cultivar Assessment in Uhnin (51°34'N, 23°02'E), on podzolic slightly acidic soil. The experiment was carried out using random sub-blocks, in a dependent split-plot system, in triplicate. The first-order factor was potato cultivars (‘Vineta’ and ‘Satina’), and the second-order factor consisted of six cultivation technologies: A − using fungicides to control potato blight, technologies: B, C, D, E − with the application of effective microorganisms, and technology F − without the use of fungicides and effective microorganisms as a control object. The scope of the research included assessing the color of the raw tubers pulp. To determine the color of raw potato, the method of trichromatic colorimetry was used applying the Konica Minolta CM-5 spectrophotometer. The color measurement of raw tubers was carried out in the CIEL*a*b* system. Cultivation technology with fungicide application significantly contributed to the brightness change of the raw tuber flesh compared to the technology (D), where for the treatment, as in the growing season, effective microorganisms were used. Genetic properties of cultivars determined the color brightness, as well as its trichromatic coordinates