Milena Yordanova

• PhD
• University of Forestry

A comparative study of root and soil microbiological activity was carried out during independent and co-cultivation of cabbage with other crops: leeks, beans, tagetes, fennel and flower mix. The intercropping of cabbage and flower mix increases the amount of microorganisms in the immediate vicinity of the cabbage roots to the highest degree. The bi...

Intercropping increases biodiversity in vegetable fields. It affects both above-ground and soil communities. The aim of the research was to study and analyze the soil microbiological and enzymatic activity in intercropping of cabbage with leek, green bean, tagetes, flower mix, and dill. The studies were carried out in two directions: 1) of microflo...

Purpose This study investigated the effect of recycled Olive Pruning Residues (OLPR) and Spent Coffee Grounds (SCG) on substrate temperature (temp) and duration (dur) of Pleurotus ostreatus growing stages. This study also sheds light on the correlation between selected parameters, yield, and substrate composition. Method The experiment consisted of...

The aim of our study was to test some varieties of lettuce in unheated greenhouse (high tunnel) for the winter growing with November transplanting. The experiment was carried out in the period 2015-2016 in the experimental field on University of Forestry-Sofia (42° 7′ N, 23° 43′ E). Were selected 19 cultivars (16 Batavia and 3 Lollo types) with dif...

Abstract The migration of people from small settlements to the large cities is a lasting trend because of most of the opportunities they offer. The increase in population leads both to redevelopment and reduction of arable land, and to an increase in the city’s food needs. These trends again put forward the theme of urban agriculture. Through it...

Abandoned olive pruning residues (OLPR) are good source of carbon, an element required for the growth of Pleurotus ostreatus mushroom. The current study investigated the effect of implementation of olive pruning residues in oyster mushroom substrate. Based on mixtures of wheat straw (WS) (commercial control) and OLPR, four substrate types (treatmen...

The implementation of nano-technology for the amelioration of plant tolerance against abiotic stress has been widely reported in last years. In the current study, spraying of Nano-chelate Super Plus ZFM (NcSP-ZFM) on salt-stressed chili pepper was evaluated. The effect of NcSP-ZFM was tested, on micronutrients content in shoots and fruits, on chlor...

Nutrient uptake and physiology of potato plants in response to monopotassium-phosphate (MKP:0-52-34) and drought was investigated in the current study. Three different irrigation regimes were applied: 100, 75 and 50% of crop evapotranspiration (ETc). MKP was added twice at 14 and 28 days after emergence with a dose of 3 g plant‑1. Plants irrigated...

Supplementation of the growing substrate affects the substrate temperature, the timing of consecutive harvests, and the production of oyster (Pleurotus ostreatus) mushroom. The study investigated the effect of two nitrogen-rich supplements, Lithovit®-Amino25 and Lithovit®-Urea50, added in two doses (3 or 5 g kg-1), once (at spawning or after first...

No previous study assessed the combined effect of olive pruning residues (OLPR) and spent coffee grounds (SCG) on P. ostreatus production and nutritional value. The aim of this study was to determine the capacity of P. ostreatus to degrade lignocellulosic nature of combined OLPR and SCG as well as their resultant nutrient composition. A complete ra...

The work investigated the effect of Lithovit-Urea50 on the composition of Pleurotus ostreatus (Jacq. Ex Fr.) P. Kumm. (1871) cultivated on spent oyster substrate mixed with wheat straw (1:1, w/w mixture). The product was applied in different doses (C 1 : 3 g kg ⁻¹ and C 2 : 5 g kg ⁻¹ ) at three distinct timings (t 1 : at spawning, t 2 : after first...

The aim of this study was to test some cultivars of lettuce for field spring production with November transplanting under non-woven fabric (fleece). The experiment was carried out in the period 2015-2016 in the experimental field on University of Forestry Sofia (42° 7′ N, 23° 43′ E). There were selected 12 cultivars (10 Batavia and 2 Lollo types) w...

The lettuce (Lactuca sativa L.) is one of the oldest vegetable crops. Due to its valuable nutritional, dietetic and healing properties, it was grown in the Middle Ages. Salad as a vegetable culture is found in almost all countries. The largest areas occupy in Europe, North America and New Zealand and attacked by a large number of phytopathogens cau...

The aim of the study was to identify the abiotic factors that influence the onset of diseases in a salad (Lactuca sativa L.) var. romana and var. capitata, grown under polyethylene film in Sofia field. Based on the objective, we set plots experienced in duplicate salads with foil, and two plots without foil. In order to obtain comparable results we...

The requirements of modern agriculture include besides obtaining maximum yields of crops also maintaining and improving soil fertility and environmental protection. In recent years, interest of usage solid phase (charcoal or biochar) obtained by pyrolysis as soil improver, increases. Biochar is a solid material obtained from the thermo chemical con...

The aim of the paper was to present the influence of plant density and different types of organic mulch on growth and yield of Romain lettuce. The field experiment was carried out in 2014 in the experimental field of University of Forestry – Sofia, with Romaine lettuce cv. Yellow beauty. The seedlings were planted at a distance of 30 x 30 cm and tw...

The aim of the paper was to present the influence of plant density and different types of organic mulch on weed infestation and yield of Romain lettuce. The field experiment was carried out in 2014 in the experimental field of University of Forestry-Sofia, with Romaine lettuce cv. Yellow beauty. The seedlings were planted at a distance of 30 x 30 c...

The aim of the paper was to present the effect of different types of organic mulches on soil temperature, during the cultivation of broccoli. The experimental work was carried out in 2011-2012, in the experimental field on University of Forestry-Sofia, with broccoli, cv. Fiesta F1. For the aim of the study were used different waste products from ag...

The application of compost is a beneficial and economical solution for improving physical and biochemical properties of soil. Many of the farmers issues relate to the different organisms involved in the composting process and the effects of compost on the soil fauna. Determining the species composition of nematodes before using compost is an assess...

Weed infestation in a field with beetroots can reduce the yield because the weeds compete with the cultivated plants for nutrition, water and light and depress their growth. The aim of this field experiment was to study the effect of two different organic mulches on weed infestation and yield of beetroot: barley straw mulch (BSM) and mulch from spe...

The aim of the paper was to present the influence of different types of organic mulch on soil temperature during thecultivation of pepper. The experimental work was carried out in 2012-2013in the experimental field on University ofForestry – Sofia, with pepper cv. 'Sofiiskakapia’. For the purpose of the study were used different available materials...

The effect of mixtures of pre-emergence herbicides on weed infestation and yield of leek was evaluated. Three tank mixtures were applied: s-metolachlor (Dual Gold 960 EC at a dose of 80 ml/da) + oxyfluorfen (Goal 2 E at a dose of 100 ml/da); s-metolachlor (Dual Gold 960 EC at a dose of 60 ml/da) + oxyfluorfen (Goal 2 E at a dose of 75 ml/da); and s...

The weed infestation is one f the main problems, especially of the organic gardening. In the region of Sofia, a 2-years field experiment for growing broccoli with covering the soil surface was carried out. Different organic mulches were overspread by layer of 5 cm thickness. Data was collected about the effect of mulching on weed infestation. The w...