Stnanislava Dimitrova

Institete of Agriculture - Kyustendil · Breeding introduction and cultivar studies on crops

Apples, juice, vinegar and other derivatives thereof may contain cyanuric acid (melamine derivate). Apples treated with plant protection products (herbicides) contain the most cyanuric acid. Apples untreated with plant protection products may also contain cyanuric acid, depending on the degree of fermentation processes in them. Cyanuric acid was no...

From the studies made, as a main conclusion is that the Eh-pH diagram of water is extremely useful in the technological processing of cold-pressed fruit juices: 1. In juices with Eh and pH values that fall under line (a), a release of hydrogen H 2 from the consistency of the juice can be expected, at which strong oxidation processes are not expecte...

The purpose of the present study was to evaluate the productivity, fruit quality, and suitability for technological processing of the fruits of apple selections with yellow-green fruit color for the production of cold-pressed cloudy juice. The study was conducted during the period 2018-2021 with 10 apple selections of the Institute of Agriculture-K...

The aim of the study is to investigate cloudy apple juices, produced from 83 apple varieties, grown by the Institute of Agriculture in town of Kyustendil, Bulgaria for their main ecological and technological parameters, in view of their safety for the population and the possibilities for their use as raw material in the food industry. The study fou...

The aim of the study is to investigate the most cultivated traditional varieties of apples from farmers in the Kyustendil region, Bulgaria which to be compared with the new varieties and hybrids grown by the Institute of Agriculture in Kyustendil for their main environmental and technological parameters, in view of their safety for the population a...

18 varieties (sorts) and 4 hybrids of the most common dessert apple sorts for direct consumption from the Kyustendil region, Bulgaria and their cold-pressed juices in the canning industry were studied. The aim of the study was to obtain information on the radiological status of some of the raw materials for the food industry and in particular of ap...

All tested varieties and hybrids of apples and their juices have low radioactivity in accordance with regulations. The natural total radiation background for the Kyustendil region is 0.16 µSv/h (as a there is a fluctuation from 0.10 to 0.20 µSv/h), and less often it is outside these norms. The study shows that to some extent there is a relationship...

Abstract During the period 2011-2019 plum cultivars Top, Topfirst, Tophit, Topgigant Plus and Topstar Plus, introduced from Germany, were studied together with the Stanley as a standard. The plantation was created in the spring of 2011 at planting distances of 4 × 3 m. The trees were grafted on Prunus cerasifera seedlings, trained as freegrowing cr...

2015-2018 г. в колекционно ябълково насаждение на Инсти-тут по земеделие-Кюстендил. Изследвани са 4 устойчиви на струпясване ябълкови сортове (Rewena, Reglindis, Retina и Topaz), нови за района. За контрола e използван сорт Florina. За започване на вегета-цията са необходими 46-53 дни и температурна сума над 5°С от 180,2 до 249,9°С. Най-рано започв...

The study was carried out in 2015-2017 at the Institute of Agriculture-Kyustendil. The aim was to evaluate some apple cultivars from а collection at the Institute as to response to stresses (late spring frost and susceptibility of leaves and fruit to apple scab and powdery mildew). 'Rosana', 'Fuji Nagafu 6', 'Charden', 'Prima' and the new Bulgarian...

The selection of new apple cultivars is focused on high and stаble yield, fruit quality, tolerance to biotic and abiotic stress. As а result of the breeding activity during the last 10-20 years at the Institute of Agriculture-Kyustendil many new apple progenies were obtained to increase the genetic bases for breeding. This article presents some bio...

The cultivar 'Marlena' has been obtained through controlled hybridization between 'Florina' and 'Macfree' at the Institute of Agriculture-Kyustendil, and was recognized as a new cultivar in 2010. The original seedling was propagated on MM 106 rootstock, planted at distances of 4.5×2.5 m and grown under conventional technology for apple. In the arti...

Abstract The study was carried out in 2015-2017 at the Institute of Agriculture - Kyustendil. The aim was to evaluate some apple cultivars from а collection at the Institute as to response to stresses (late spring frost and susceptibility of leaves and fruit to apple scab and powdery mildew). ‘Rosana’, ‘Fuji Nagafu 6’, ‘Charden’, ‘Prima’ and the ne...

The cultivar have been obtained through а controlled hybridization between 'Florina' and 'Macfree' at the Institute of Agriculture-Kyustendil, recognized as a new cultivar in 2010. The original seedling was propagated on MM 106 rootstock and the trees were planted at distances of 4.5 x 2.5 m and grown under conventional technology for apple. In the...

The selection of new apple cultivars is focused on high and stаble yield, fruit quality, tolerance to biotic and abiotic stress. As а result of the breeding activity during the last 10-20 years at the Institute of Agriculture-Kyustendil were obtained many new apple hybrids to increase the genetic basis for breeding. This article presents some biolo...

Absract The present study was carried out during the period 2015-2019 at the Institute of Agriculture - Kyustendil with poorly distributed in the production yellow-green apple cultivars. The purpose was to offering the most suitable of them for wider use in Bulgaria.The trees were grafted on MM 106 rootstock and planted in spring of 2002 at distanc...

The study was carried out during 2015-2017 at the Institute of Agriculture - Kyustendil. The aim was to evaluate a part of the apple cultivars grown in а collection plantation of the Institute to some stress factors (late spring frosts and the degree of attack on the leaves and fruit from apple scab and powdery mildew). It was established that ‘Ros...

Abstract In 2015-2019 the blooming and ripening time, productivity and fruit quality of six apple hybrids, selected at the Institute of Agriculture in Kyustendil were evaluated. The trees grafted on rootstock MM 106 were planted in the spring of 2007 at distances of 4.5 x 2.5 m. ‘Golden Delicious’ was used as a standard cultivar for comparison. Acc...

The study was carried out during 2015-2018 in an apple plantation established in the spring of 2007 at the Institute of Agriculture - Kyustendil (Bulgaria) with fifteen scab resistant apple cultivars (nine foreign and six new Bulgarian), grafted on MM 106 rootstock.The tree productivity, fruit quality and economic indicators - management costs (eur...

Apple is the main fruit cultivated in Yantai, but mainly red varieties, excellent yellow and green varieties are lacking. In order to enrich the variety structure of apples in Yantai area and increase the diversity of yellow-green varieties, the team selected 15 yellow and green apple varieties through introduction and cross-breeding methods to con...