Zeszyty Naukowe Instytutu Ogrodnictwa
The aim of the study was to monitor the mineral composition of the water used for fertigation in soilless cultivation and the physicochemical changes ob-servation at the time. The study was conducted in the years 2011-2013. The water samples were collected from four selected water intakes located in the greenhouse horticultural farms. The samples were bimonthly taken from each water intakes. The samples...
Silver nanoparticles used in concentration 100 ppm inhibited S. sclerotiorum development on fresh cut carrot. The best results were obtained for nano-silver with diameter 8 nm (when the spraying was done twice: before and after fungus inoculation). Nano-copper and mixture of nano-silver and nano-copper did not affect the disease development. It was found that none of used nanopar-ticles (nano-silver,...
In the years of 2011-2012 in the Research Institute of Horticulture, Department of Genetics, Breeding and Biotechnology of Vegetable Crops, Skierniewice, Poland, an analysis of four malesterile and six male-fertile head cab-bage (Brassica oleracea var. capitata f. alba) lines was performed both in generative and vegetative stage. In 2011 the ability for generative propagation and the level of self-incompatibility...
Susceptibility of various cultivated mushroom strains to wet bubble caused by Mycogone perniciosa was estimated. The investigated mushrooms were char-acterized by cup size in the following categories: intermediate between large and medium size, medium size, and small size. The susceptibility assessment was done on the basis of the yield loss and change of the mean mass of fruiting body. The results...
The effect of harvest time, blanchnig, freezing and long term storage of fro-zen broccoli on flavonoids content in broccoli florets was studied. Two broccoli cultivars Naxos F1 and Chronos F1 grown conventionally were used in the exper-iments. The small broccoli florets of 2 cm diameter were blanched in water of temperature 96-98 °C for 2,5 minutes, cooled in cold water and next packaged into nonperforated...
In the years 2010-2011 at the Research Institute of Horticulture in Skierniewice the experiments with protection of lettuce against Botrytis cinerea and Bremia lactucae using natural products in open field and under cover were carried out. There were estimated the efficacy of studied products and their influence on marketable yield. In year 2010 in lettuce under cover in spring tillage the best efficacy...
In greenhouse cultivation the influence of two organic and two mineral substrates on growth of cucumber cv. Pacto F1 were studied. Organic substrates, i.e. coconut fiber, straw, and rockwool were used as growing slabs (pressed), while perlite in plastic sacks (loose). New training system was applied in which the cucumber plants were lowered once a week , before they reach maximum height at the top...
Gerbera plants with the symptoms of powdery mildew (Erysiphe polyphaga) were sprayed with the fungicides: Bravo 500 SC, Discus 500 WG, Dithane NeoTec 75 WG, and Domark 100 EC (without a wetting agent), or in a mixture with the adjuvant Silwet Gold 0.015%. After 2 spray treatments at 7-day intervals, the degree of infection observed on the leaves of the plants protected with the tested fungicides with...
The aim of this work was to study the effect of new conventional and natural products used for pre-harvest protection on control of postharvest diseases, storage life and quality of three species of vegetables: carrot, celeriac, and parsley. The vegetables were protected during growing season and the last spraying was before harvest. The vegetables were storage in cool room at 0 ºC and relative humidity...
Dithiocarbamates are one of the major fungicide groups used to protect crops from fungal diseases. The data on dithiocarbamates res idues in apples were collected during the years 2009 - 2012. The method used to determine dithiocarbamates in food involves the analysis of carbon disulfide generated during hydrolysis of the compounds found in the sample. A total of 3955 samples of apples were tested...
The aim of the study was to examine the five fertile carrot inbreed lines in respect to morphological traits in generative stage. In the year of 2012, plants were generatively propagated both in the greenhouse and in the field of the Re-search Institute of Horticulture, Skierniewice, Poland. Two types of pollinating insects (red mason bee and flies) were used for obtaining of seeds. Flowers of all...
The collection of genetic resources of genus Lycopersicon currently in-cludes 1411 accessions. Twenty three tomato accessions originating from Po-land and Syria, with regards to 42 morphological and economic traits according to IPGRI descriptor list, is presented. These traits include 10 traits of plants and 32 traits of fruits. The following important characteristics of fruits were de-scribed: size,...
Alternaria black spot of cabbage plants, incited by different species of Alternaria, causes an increasing damage of Brassicaceae crops throughout the world, including Poland. Usually, Brassica plants are attacked by A. brassicae (Berk.) Sacc., A. brassicicola (Schw.) Wiltsh., and A. raphani Groves & Skolko. Alternaria pathogens have a wide spectrum of hosts, including cabbage, other cultivated...
The aim of this work was to evaluate the influence of flurprimidol on development of the green peach aphid (Nectarosiphon persicae Sulzer) population in chrysanthemum (Dendranthema grandiflora Tzvelev) grown in pot. In 2010-2011 in the greenhouse ‘Safranel’ chrysanthemums were cultivated in 12 cm pots. Growth retardant flurprimidol (Topflor 015 SL) was applied as a single, foliar spray, at concentrations...
The aim of the study conducted in 2012-2014 was to evaluate multi-breeding value of the tomato male-sterile lines (gene ms-10). Two (PWS 10, PWS 18) of the five tested lines showed the highest and most stable level of sterility. The good stability of sterility was also found in the two other ms-10 lines (PWS 12, PWS 21), which displayed a low number of fruits with seeds. In the case of the last tested...
The study evaluated the efficacy of Amistar 250 SC, Discus 500 WG and Score 250 EC, applied at concentrations according to their labels/instructions for use, and also reduced by 50% with the addition of one of the oils: Atpolan 80 EC, Olejan 85 EC, rape seed oil, in the protection of roses against Diplocarpon rosae. The fungicides and their mixtures with oils were used in open field conditions for...
Changes of vitamin C content in two Brussels sprout cultivars (‘Ajax F1’ and ‘Louis F1’) during 12 weeks storage have been studied. Vegetables have been stored at −1.5 °C; 0 °C; 5 °C in normal atmosphere and at temp. 0 °C in controlled atmosphere (atmosphere gas content 7% CO2 – 2% O2 and 4% CO2 – 2% O2). After 12 weeks of storage the highest amount of vitamin C have been determined in Brussels sprout...
Electrical conductivity (EC) of stem electrolyte leakage method was used for evaluation of frost hardiness of new cultivars of ornamental shrubs from the three popular in landscape taxa. Eight cultivars of Forsythia, Potentilla and Weigela were planted in the field at the beginning of 2010 in a sandy loam soil of pH 6.4. Stems for electrolyte leakage were collected in the beginning of every month...
During the autumn 2010 and 2011, at the experimental fields of the Re-search Institute of Horticulture in Skierniewice, the species composition of phy-tophagous insect, occurring on winter onion crop, was determined. Observations were conducted on five cultivars of winter onion: ‘Elody’, ‘Hi-Keeper’, ‘Labra-dor’, ‘Sibir’ and ‘Swift’. Each of the cultivars were seeded in the middle of August, in the...
Three cultivars of dill were used for the experiment: ‘Szmaragd’, ‘Ambrozja’ and ‘Herkules’. The sensory quality included analysis of fresh and dry herb of dill (drying at 38 °C). Results of two years of experiments showed that sensory quality of fresh and dry herbs of dill depends on cultivars. In 2011 the best overall quality was found for the fresh dill of ‘Szmaragd’ cultivar analysed after harvest...