The productivity of the machine depending on the work duration and blades wearing out was investigated. The wearing out of the blades of Biber-70 cutting machine during manufacturing of wastes from wood processing and furniture production into energy chips was studied as well as the factors it...

Atlas cedar (Cedrus atlantica Man.) is a typical tree species for the region of North Africa. Trees reach a significant height of 35-65 m. The diameter of the trunk at the chest height ranging between 0.9-1.8 m that gives it a considerable economic interest. The wood core could be coloured from...

The importance of carbon stored in harvested wood products (HWP) is a recognized measure to mitigate climate change. The purpose of this article is to present the application of the IPCC guidelines for calculating net CO₂ emissions from HWP according to the so-called 'production approach'....

Much of the small wood chippers available on the Bulgarian market produce biofuel from woodworking or logging waste that meets the requirements of the European CEN/TS 335 standard. For the present study, four wood chippers most commonly used in Bulgaria for small amounts of energy chips have been...

Environmentally-friendly management like 'Dowerwald' is a silvicultural method that unites in an unconventional way all concepts except clear cutting. The starting point for applying of this method in commercial forests is the monoculture and one-age felling plantations. Their transformation could...

As the distance between the corridors increases from 20 to 60 m, the percentage of injured trees from the remaining woods increases to almost 25%, the size of the wounds ranging from 16.2 cm² to 75.7 cm². In Instruction No. 5 "For construction in the forest territories without changing their...

The study was caried out in two cultivars Willamette and Lyulin in organic raspberry plantation in (2016- 2018) in the experimental field of the Institute of Agriculture - Kyustendil. The aim was to research the effect of the application of organic fertilisers on the wintering stock of Lasioptera...

The forestry milling brush-cutters are being used more and more in a number of countries for cleaning of forest site and clearings. In recent years this process has already been observed in Bulgaria. The main advantages of these technologies and machines are the high quality of soil preparation,...

Analyzed are the used machines for loading of landings in the timber industry.. Research on the operational properties of a telescopic loader Bobcat 470 TL in terms of UOGS "Petrohan". From the survey results were obtained for the possibilities of the machine when working on the transverse and...

The aim of the study was to establish the efficacy of some bioinsecticides, for control of black peach aphid Brachycaudus persicae on peach. The experiments were conducted under laboratory conditions. Two botanical insecticides with active ingredients pyrethrum (Pyrethrum FS EC - 0.025 {\%}; 0.05...