The effect of three fungicide treatment programmes and the level spring nitrogen fertilisation on seed yield two types ofcultivars Brassica napus L. sown at different seeding rates was studied in a field experiment. subject study anopen-pollinated cultivar ‘Casoar’ restored hybrid ‘Visby’. Three plant protection programmes, levels nitrogenfertilisation (160 220 kg N⋅ha1), for each (‘Visby’—50 7...

Fire, as a natural ecological disturbance factor in forest, this study located in the Marivan region, Northern Zagros forest, and western Iranian state of Kurdistan. In each burned and unburned area 30 circle sample plot (1000 m2) were collected by randomized–systematic method in the 100×200 m net (in total 60 plots). In every sample plot the kind of species, number of tree, the heig...

The Experiment was conducted at Parry Agro Industries Ltd., Valparai, Coimbatore district in two varieties of tea viz., Assam jat and ATK clone. Totally eighteen treatments with different combinations 100, 75, 62.5 50 per cent the recommended doses fertilizers along DCC biofertilizers. rate three six tonnes ha-1 biofertilizers VAM, Azospirillum Phosphobacteria each @ 40 kg were given annually. ...

Hedonic pricing models attempt to model a relationship between object attributes and the object’s price. Traditional hedonic pricing models are often parametric models that suffer from misspecification. In this paper we create these models by means of boosted CART models. The method is explained in detail and applied to various datasets. Empirically, we find substantial reduction of errors on o...

This study assesses the effectiveness of stratification, based on photo-interpreted forest types, for strategic inventory. It uses results (from stratified sampling) for Total Merchantable Volume (TMV) in 18 Inventory Areas in Tasmanian State forest. The variance of the TMV as determined from stratified sampling is compared with the estimated variance of a simple random sample using the same nu...

Some general instructions and information: • Your solutions can be given in Swedish or in English. • Only write on one page of the paper. • Write your exam code and a page number on all pages. • Do not use a red pen. • Use separate sheets of paper for the different problems (i.e. the numbered problems, 1–5). • When asked to pair e.g. plots with corresponding formulas, the order of the plots/for...

Fire, as a natural ecological disturbance factor in forest, this study located in the Marivan region, Northern Zagros forest, and western Iranian state of Kurdistan. In each burned and unburned area 30 circle sample plot (1000 m2) were collected by randomized–systematic method in the 100×200 m net (in total 60 plots). In every sample plot the kind of species, number of tree, the heig...

Lignin is the second most abundant natural biopolymer, and lignin wastes are therefore potentially significant sources for renewable chemicals such as fuel compounds, as alternatives to fossil fuels. Waste valorisation of lignin is currently limited to a few applications such as in the pulp industry, however, because of the lack of effective extraction and characterisation methods for the chemi...