Trees of Bergvik apple (Bergviksäpple) planted between 2001 and 2007 have shown varying Harvest. This study investigates why some trees gets low or no Harvest while others get significantly higher Harvest. The aim is to identify some reasons why fruiting differs between the trees and if possible suggest and/or enlighten the tree owners what can be done to improve fruiting. The study includes 25 trees, mostly located in Hälsingland, Sweden. The tree owners have answered two questionnaires, first in the spring with questions regarding flowering and the second in the autumn, regarding Harvest.

Stump Harvest could be found in the late 1970?s and the early 1980?s. And now when the prices on energy are high it has become an interesting topic again. This work has been conducted within Holmen Skog?s stump Harvest testing in Norrköping.

Stands where pre commercial thinning has been ignored or inadequate often tend to have high stem density and low average diameter when they reach heights of thinning. In such stands, it can often be expensive to do a conventional pulpwood Harvest as a first thinning. This study investigates the development of the stands and the economic outcome of forest fuel extraction, or a combined Harvest as alternatives to the ordinary pulpwood Harvest. Simulations in Heureka StandWise were performed for two thin and dense stands, which were constructed by data from the Swedish National Forest Inventory. The simulations show that the extraction of forest fuel in first thinning at an early stage can provide higher net revenue compared to conventional pulpwood Harvest at the same time or later.

The aim of the study was to compare productivity in first thinning of birch stands, when either energy- or pulpwood was Harvested. The systems total profitability was also compared by including forwarding and chipping costs. A Gremo 950 HPVR Harvester was used and the same driver was used under the entire study. During the pulpwood Harvest a Logmax 4000b Harvester head was used and a feller buncher head made by Silvatec was used during the energy wood Harvest. Six study unit pairs were located in a birch dominated stand outside Ängelholm in Skåne.

The wild boar Sus scrofa population in Sweden has increased rapidly in the last decades which has led to conflicts among stakeholders, for example due to crop damages in agriculture. Thus, there is an urgent need of quantified goals and effective strategies for wild boar management. To develop such strategies, knowledge on population dynamics is fundamental. In this study a deterministic matrix model was used to estimate population growth, based on previously published data. The exponential growth rate for a wild boar population was calculated to 1.48.

In the near future we need to reduce the greenhouse gas emissions significantly for the benefit of the environment around us. The European Union has de-manded a variety of climate and energy goals to be achieved by year 2020, the ?20-20-20? targets. With these aims, The European Union means that we must reduce our emissions from fossil fuels and instead increase our renewable fuels. With stump Harvest in the forest it?s possible to increase the use of renewable fuels and reduce our emissions from fossil fuels.

The choice of Harvest date for leys is one of the most important factors affecting the size and quality of the Harvest. An early Harvest gives a high nutritive value while a late Harvest gives larger quantity. Today?s aim to produce high nutritive leys gives early Harvest dates both in primary growth and regrowth in northern part of Sweden. The consequence is a growth in the autumn, a "third Harvest".The aim of this master thesis was to study the effects of different Harvesting systems and their effect on size, feed quality, wintering and economy for conditions in the northern part of Sweden.

The choice of Harvest date for leys is one of the most important factors affecting the size and quality of the Harvest. An early Harvest gives a high nutritive value while a late Harvest gives larger quantity. Today?s aim to produce high nutritive leys gives early Harvest dates both in primary growth and regrowth in northern part of Sweden. The consequence is a growth in the autumn, a "third Harvest".The aim of this master thesis was to study the effects of different Harvesting systems and their effect on size, feed quality, wintering and economy for conditions in the northern part of Sweden.

Derome Skog AB is a purchase company whose main task is to provide Derome Timber's sawmills in Halland with timber raw material. Because of the very hard competition in the roundwood market it is important to know what kind of purchase offers are required in order to buy a valuable product from forest owners.This study aims to elucidate the crucial factors when private forest owners choose to Harvest and sell their forest. As base for this study, a questionnaire has been performed with private forest owners. The result of the study shows that it is not particularly often that the timber price is the crucial factor why the forest owners choose to Harvest and sell the forest products; i.e. timber, pulpwood as well as energy assortments.

Forest biomass is becoming an increasingly important source of renewable energy, and thereby the demand is increasing. There is currently 213 000 km of forest roads in Sweden that could be suitable for biomass Harvesting. Harvest of biomass along forest roads both provides biomass and maintains the quality of the roads. Currently, the volume of biomass along roads can only be assessed post Harvest, chipping and industry deliverance. As the decision of whether or not to Harvest should preferably be based on more than experience, the TJ-method has been proposed. The TJ-method is a subjective method to quickly determine the dry matter quantity with the assessment being conducted from the roadside.

The aim of this study was to quantify the productivity and the costs of different Harvesting systems (teams), containing Harvesters equipped with accumulating Harvester heads and forwarders, in first commercial thinnings were an integrated Harvest of pulpwood and energy wood were performed. In the beginning the plan was to study and measure 20 sites before and after Harvest. Due to storms during the summer of 2010, complete data could only be obtained from 8 of these 20 sites. Seven of these sites were privately owned and one was owned by UPM, all of the sites had been pre-commercially thinned. The mean stem density before Harvest was 2578 stems per ha and the mean stem volume was 0.074 m3solid over bark.On average 1518 stems/ha was Harvested.

The object with this thesis is to evaluate which of the catch crops oil radish and white mustard in combination with establishment method, give the most effective nitrogen uptake. The main purpose of the catch crops is to reduce leakage of nitrogen. They are sown after the main crop and killed before the next crop. In Sweden the farmers gets subsidies to establish catch crops. The thesis is limited to the trail L3-9010 sited at HS- Malmöhus, Borgeby Gård, 237 91 Bjärred, Sweden, 2007. Only treatments with oil radish, white mustard and the reference treatments were studied.

The aim of this study is to describe a number of type stands of lodge pole pine in Norrbotten with respect on stem volume and total biomass. Further questions to answer is if there is stand characteristics that make the stands more suitable for pulpwood in early thinning, or if it is better to apply whole tree Harvest. The study shall also give an indication if bio energy can be an economical interesting alternative for Sveaskog. Sampled trees represented the variation in the different stands. Five trees were selected from each stand to represent that stand. Stem volume and biomass (kg dry weight (DW) per hectare) for each fraction was calculated.

In fisheries, there is a long tradition to use catch data when evaluating changes in the stock and effects from Harvesting. It is a common practice to use Catch Per Unit Effort (CPUE) as an index of population size, and several studies have investigated the properties of CPUE in relation to population abundance, spatial distribution and efficiency of gear. In research, catch rate on trap-transects is used as an index of abundance for wildlife species but CPUE is rarely applied as a tool in Harvest management.In 1993, more than 60 000 km2 of the state managed mountain range in Sweden was opened to the public for small game hunting, under the responsibility of the county administrative boards in Jämtland, Västerbotten and Norrbotten. The total area is now divided into 332 hunting units (median=73 km2) and an internet based system is used to administer licences and reporting bag statistic. Each hunter has to register the results within two weeks after the hunt.

With the days DGPS-technology can a position of 5 centimetres decides. With this exactly position is the technology very interesting for the agriculture. I think this technology can come more and more in the future. You can also move the fact and information further to the spreader, sprayer and seeders. If the combine is equipped with Harvest accounting, can you with help of the system make Harvest maps.