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

Wpływ ekstraktu z alg Ecklonia maxima (Kelpak SL) na plonowanie pszenicy zwyczajnej, pszenicy twardej i pszenicy orkisz

The 3-year experiment was concerned with the response of spring forms of common wheat (Triticum aestivum L. subsp. aestivum), durum wheat (Triticum durum Desf.) and spelt wheat (Triticum aestivum subsp. spelta L. em. Thell.) to the foliar application of a plant growth stimulant (extract from marine algae Ecklonia maxima), with the commercial name of Kelpak SL (GS), as compared to control treatment (C). The following parameters were analysed: yield of grain, yield components (number of ears, weight of 1000 kernels, number and weight of kernels per ear) and physical indicators of grain quality (test weight, uniformity and vitreosity of grain). The study showed that the level of yielding and the yield components were related primarily with the wheat genotype, but they depended also on the agro-climatic conditions and on the algae extract and control experimental treatments. The application of algae extract, compared to the control, caused a significant increase in the yields of the spring wheat species under study, on average by 7.0%. Canopy spraying with algae extract had a favourable effect on the number of ears, on he number and weight of kernels per ear, but it had no effect on the weight of 1000 kernels. The grain quality of durum wheat, spelt wheat and common wheat was affected more strongly by the weather conditions in the successive years of the study and by the genotype than by the foliar application of algae extract. The spelt genotypes were characterised by lower yields and lower grain quality than common wheat and the durum wheat genotypes

Nutraceutyki w żywności i farmacji. Praca przeglądowa

The increase in consumer awareness about food and health has led to an increase in the demand for food containing biologically active compounds, especially antioxidants, which can help the human body fight the oxidative stress. Many unconventional or new sources of antioxidants have been discovered, which is a priority not only for food, but also for the pharmaceutical industry. It has been shown that not only raw materials, but also waste from fruit and vegetable processing contains valuable molecules, such as: proteins, essential amino acids, antioxidants, dietary fibers, natural pigments, or aromatic compounds, that can be extracted, purified and modernized in food products or pharmaceuticals with added value. This is the basis of huge potential of not only plant and biotechnology raw materials, but also food waste for the use as a source of antioxidants.

Ocena programów rolnośrodowiskowych wykorzystywanych przez rolników w południowo-wschodniej Polsce

The aim of the study was to evaluate the use of agri-environment schemes in the years 2004-2006 and 2007-2013 by farmers south-eastern Poland. In this region are more implemented these packages sciences, which are less onerous. Most of the agri- -environmental programs implemented by farmers, puts great emphasis on the conservation and preservation of the rural landscape. Agri-environmental program increased environmental awareness among farmers who implement it and helps to inhibit the development of intensive agriculture. Simplification of the documentation related to the agri-environmental program, may affect the increase in the number of new farmers willing to implement these programs. In south-eastern region of Poland, the natural packages are realized more willingly, and receiving payments is the main incentive that convinces farmers to join agri- -environment program. Implementing the agri-environmental program on farms in this region of Poland contributed both to improvement of water quality, reduction of soil erosion on a farm, and on the other hand to reduction of the livestock population. Increased employment of agri-environment advisor, especially botanists and ornithologists, would facilitate farmer participation in environmental programs.Celem badania była ocena wykorzystania programów rolnośrodowiskowych w latach 2004-2006 i 2007-2013 przez rolników w południowo-wschodniej Polsce. W tym regionie są bardziej realizowane te pakiety przyrodnicze, które są mniej uciążliwe. Większość programów rolnośrodowiskowych, realizowanych przez rolników, kładzie bardzo duży nacisk na ochronę i zachowanie krajobrazu wiejskiego. Program rolnośrodowiskowy zwiększa świadomość ekologiczną wśród rolników, którzy go realizują i pomaga hamować rozwój intensywnego rolnictwa. Uproszczenie dokumentacji związanej z programem rolnośrodowiskowym, może wpłynąć na wzrost liczby nowych rolników chętnych do realizacji tych programów. W południowo-wschodnim regionie Polski naturalne pakiety realizowane są chętniej i otrzymywanie płatności jest głównym bodźcem, który przekonuje rolników, aby dołączyć do programu rolnośrodowiskowego. Realizacja programów rolnośrodowiskowych w gospodarstwach rolnych w tym regionie Polski przyczyniła się z jednej strony do poprawy jakości wód i zmniejszenia erozji gleby w gospodarstwie, natomiast z drugiej – do zmniejszenia populacji zwierząt gospodarskich. Zwiększenie zatrudnienia doradców rolnośrodowiskowych, a w szczególności botaników i ornitologów, ułatwiłoby przystępowanie rolników do pakietów środowiskowych