Sugar beet yielding and, thus, the profitability of its cultivation depends on various conditions. These are mainly a dose of nitrogen fertilizing and anti-fungal plant protection. Based on the research carried out in a private-owned farm in Biała commune, Opole province, Poland, it was observed that the most important factors influencing plant development and root yield of sugar beets (var. Kassandra and Cortina) were genetic features of the investigated varieties and fungal control. They increased considerably root yield and sugar content. The doubled nitrogen dose from 90 to 180 kg N/ha enhanced a slight, statistically insignificant, root yield increase and a lower sugar content in beet roots. The three-year research showed that weather conditions during the vegetation period had a decisive effect on sugar beet plants development and fungal infestation. The variety Cortina was characterized with a significantly higher yield and a higher content of treacle forming compounds in the roots. The increase of N rate from 90 to 180 kg N/ha caused a significant increase of average root mass, leaves and dry ma�er yield and potassium and N-αNH 2 in roots, but it also lowered sugar content. In the years with favorable conditions for fungal infestation, the use of fungicides helped to obtain a higher leaf/root ratio, higher root mass, higher root and leaf yield and higher dry ma�er and sugar yields. However, it did not have an effect on the content of chemical compounds producing treacle in sugar beet roots. Yielding of roots -medium-high; medium-high sugar content and yielding, low sodium and potassium content. Medium susceptibility to foliar disease Cercospora beticola; foliage-relatively little. KeywordsThe experiment was set on a very good wheat soil, of a Polish quality class II and III a. Soil fertility and nutrients content were determined in autumn before organic fertilization; soil pH was 6.5-6.8. Phosphorus content was from medium to high and potassium and magnesium contents were very high. As a forecrop to sugar beet, winter wheat was used. The experiment was set in 45 cm × 18 cm rows. The size of the plots was 6 rows × 45 cm × 10 m = 27 m 2 .In the vegetation period, plant, weed infestation and agrofags occurrence were observed. On the plots with plant protection treatment, two sprays with fungicides: Alert 375 and Duett 250 SC were applied as assumed in the experiment methodology. During harvest roots of each plot were counted and roots and leaved were weighed. Moreover, 10 roots were isolated from each plot and presumed for further investigation. Biometric measurements of the roots were carried out, the roots were chopped and 3 × 100 g of roots were analyzed in the laboratory. The following data was determined: content of dry matter, sugar, sodium, potassium and N-αNH 2 with generally applied laboratory methods. Root yields, and leaves, dry matter, sugar yields, and plant density per 1 ha, as well as mass of 1 root and K, Na and N-αNH 2 contents were calculated statistically with variance analysis me...

The aim of this work was to investigate the influence of Trichoderma spp. on volatile secondary metabolites and biometric parameters obtained from coriander (Coriandrum sativum L.). The fruits of coriander treated with liquid suspension spores of T. harzianum strain T22 and of T. asperellum strain B35 increased the yield of essential oil (by ∼36%); however, it was unaffected in its composition. Moreover, Trichoderma spp. influenced the yield and increased the number of seeds of coriander by ∼60%. Inoculation seeds with T. asperelleum strain B35 caused about 2-fold increase in the biomass of the aerial parts of coriander. There was also an increased root colonization by the fungus Trichoderma spp., limiting the number of phytopathogenic fungi from genus Fusarium observed.

Celem przeprowadzonych badań było określenie wpływu termicznej koagulacji białek w soku ziemniaczanym uzyskanym z bulw trzech odmian ziemniaka uprawianych systemem konwencjonalnym i ekologicznym na skład aminokwasowy i wartość odżywczą uzyskanych koncentratów białkowych. W uprawie ziemniaka systemem ekologicznym stosowano użyźniacz glebowy i fungicyd, miedzian 50 WP, a w uprawie systemem konwencjonalnym nawożenie wysokimi dawkami NPK, herbicydy, insektycydy i fungicydy. Koagulację białka w soku przeprowadzono z udziałem CaCl2. Oznaczono skład chemiczny otrzymanych preparatów oraz zawartość 18 aminokwasów w białku ogółem, po uprzedniej hydrolizie białka, przy użyciu automatycznego analizatora aminokwasów. Koncentraty białkowe otrzymane z bulw uprawianych systemem ekologicznym zawierały więcej związków azotowych, w tym form azotu białkowego niż preparaty uzyskane z soku bulw pochodzących z uprawy konwencjonalnej. Również w składzie aminokwasowym wyodrębnionych białek stwierdzono więcej takich aminokwasów egzogennych, jak: leucyna, fenyloalanina i tyrozyna oraz treonina, a wśród pozostałych aminokwasów więcej kwasu asparaginowego, seryny i glicyny. Wskaźnik wartości odżywczej CS badanych koncentratów, w zależności od przyjętego białka wzorcowego był zbliżony lub przewyższał wartości przewidziane dla standardu, szczególnie gdy preparaty pochodziły z surowca uprawianego systemem ekologicznym.

The impact of applying Prestige 290 FS, as well as biological treatments: FZB 24 WG and Proradix WP on the infection of potato tubers by Rhizoctonia solani and Streptomyces scabiei, the sprout development rate and the yield of potato tubers of three cultivars (Cyprian, Finezja and Flaming) was studied in the years 2011-2013. The experiment was conducted in a randomized split-block method in 4 repetitions. The applied chemical treatment significantly increased the potato sprouting rate and decreased the percentage of tubers infected by R. solani when compared to the application of biological treatments, as well as not treated tubers. The treatment did not affect the infection rate of tubers caused by S. scabiei. The infection of tubers caused by R. solani did not depend on the cultivar, while in case of S. scabiei the highest infection rate was observable in case of the Cyprian cultivar. Applying both chemical and biological treatments did not affect the yield of tubers.

Celem badań przeprowadzonych w latach 2011–2013 było określenie wpływu zaprawiania bulw ziemniaka zaprawą chemiczną Prestige 290 FS oraz preparatami biologicznymi FZB 24 WG i Proradix WG na wzrost i rozwój roślin trzech odmian ziemniaka – Cyprian, Finezja i Flaming. Uzyskane wyniki badań dynamiki rozwoju roślin wykazały skuteczność zabiegu zaprawiania. Rośliny, których bulwy zaprawiano badanymi preparatami, charakteryzowały się większymi wartościami analizowanych parametrów (masa pędów, bulw i korzeni) we wszystkich fazach rozwoju w stosunku do obiektu kontrolnego.

Field investigations were conducted in the years 2008-2010, in The Experimental Institution in Pawłowicach using split-plot method with two variables: 1. tuber treatments (control -without treatment, Proradix WG, Trianum and Trianum + Proradix WG), 2. cultivars (Annabelle, Innovator and Bartek). The results showed that applying of biological preparations as potato tuber treatments decreased incidence of fungus infection compared to the control. Infection severity of plants treated with the preparation Proradix WG, was lower than these treated with the preparation Trianum. Tuber crop depended significantly on studied factors. The total tuber yield of and commercial yield were higher on the objects treated with the preparation Proradix WG and Proradix WG + Trianum. The influence of biological potato tuber treatments on the content of chemical components in tubers of studied cultivars was not confirmed.