NUMERI PRAGENSES 2008 - Statistická ročenka hl. m. Prahy

Methodology

This “industry” of agriculture embraces agricultural primary production enterprises (holdings) engaged in crop and livestock production. The data are mostly sample surveyed, the sample of respondents is based on the updated Agro-register, and the results are grossed up by statistical mathematical methods. 100% structural surveys, which cover all agricultural units, are conducted at rather long time intervals. All data are measured and grossed up only for the agricultural sector and do not include own-account production (kitchen gardens) of the population.

Basic unit for records in the area of agricultural statistics is an agricultural holding, which carries out activities principally classified as agricultural and defined by any of the following threshold values: the agricultural land area of 1 hectare at minimum or 1 500 m2 of grown intensive crops (orchards, flowers, vegetables grown in the open) or 1 000 m2 of vineyards or 300 m2 of area under cover or a minimum of 1 head of cattle or 2 pigs or 4 sheep and goats or 50 heads of poultry or 100 rabbits or fur animals, and all holdings engaged in fish farming in water bodies whose areas are not limited by size. Meeting at least one of the criteria is sufficient for incorporation of units into the agricultural sector.

Areas under crops are measured by censuses taken as at 31 May and cover production areas (i.e. arable land areas, areas under crops in orchards and gardens; and areas of meadows and pastures temporarily ploughed and used for sowing), which are to be harvested in the reference period. They include areas under winter, spring and perennial crops. The item "Set-aside arable land” includes all arable land not sown or planted, regardless of reason, and land temporarily excluded or not farmed.

A harvest is the total quantity of a crop which has a standard moisture content and standard purity; it includes inferior portions of the crop appropriate e.g. to feed livestock (such as grain waste, small discarded potatoes, etc.), but excludes seed crops and crop planting stock. The harvest of individual fruits from fruit trees and bushes in the CR is measured by means of questionnaires on final harvests of agricultural crops as at the end of year. Figures on the total volume of production are derived by summing up data from the questionnaires returned from holdings and by grossing up to universe. A yield per hectare is the ratio of harvest to production area, where the production area is the area under crops (except for permanent grassland and maize).

Livestock population is derived from livestock censuses taken as at 1 April. Cows are breeding dams calved at least once, both mated and non-mated. Sows are breeding dams farrowed at least once (excluding sows discarded from breeding), including those not farrowed. Poultry includes hens and cocks, geese and ganders, ducks and drakes, turkey hens and cocks (including young ones).

Meat production in terms of carcass weight includes data from all slaughtering houses in the Czech Republic. Inevitable slaughters are counted in the carcass weight providing the meat is used for human consumption. The average carcass weight of pigs excludes sows and boars. According to the EU-legislation, methodology of carcass weight calculation was changed in 2007. In this context data for 2006 was recalculated and doesn’t correspond to this one published in the publication Statistical Yearbook of the region 2007.

The size structure of agricultural holdings is based on the data kept in the Farm Register. This register was established in 2000 from results of an agricultural census and is updated every year according to statistical reporting on the one hand and sample surveys on the other hand.

Routine part of the chapter is complemented with certain results of structural surveys made in 2007. Structural survey in agriculture ZEM 2007 followed the aim of similar surveys carried out in 2003 and 2005. The reporting unit sample included approximately 70% of registered farmers. The survey provided data primarily on the agricultural land area and its use, heads of livestock, number and structure of labour force in agriculture, agricultural machinery and equipment and other data such as ecological agriculture, non-agricultural activities related to the development of rural areas, etc. Survey on orchards Sady 2007 was made in compliance with the EU legislation for the first time. The survey was focused on agricultural holdings with minimum area of orchards (1 500m2) as well as on the structure of fruit tree varieties and the age of trees.

FORESTRY

Forestry comprises all incorporated enterprises, which employ 20 people or more and have forestry as their principal activity (CZ-NACE), and businesses managing forest land 200 ha or more in area.

Afforestation/reforestation refers to the area artificially afforested/reforested by planting and sowing (i.e. natural regeneration is excluded).

Timber removal comprises (a) a felled tree volume of large and small timber measured in m3 u. b., which was accepted as final assortment or whole-stem logs and (b) so-called self-production felling. The volume is counted irrespective of what kind of thinning or felling it is derived from and includes salvage felling.

Cleaning is an educational intervention, whose purpose is primarily to decrease the overgrowth density and to regulate health as well as the qualitative state of the overgrowth. The total area under cleaning or young-growth stand clean cutting is included. Streamside stand cleaning is included, too.

Thinning refers to intentional silvicultural measures in premature stands, usually older than those classified to the first age groups, which are carried out in order to tend and improve the overall state of stands. These measures include, in particular, stand structure modifications, morphological tending of stands, and stand stabilization, and are to increase the increment without permanent decrease in stand density.

The chapter also contains data on hunting (CZ-NACE 01.5). Data, which are published, are data from reporting units that come under the resort statistical surveys of the Ministry of Agriculture and the Ministry of Environment.

e-13-1102-08 Statistical Bulletin of Prague
2102-08 Final Harvest Figures for 2007
e-2103-08 Livestock Census: 1 April 2008
2104-07 Areas Under Farm Crops Census: 31 May 2007
e-2110-07 Livestock Slaughter 2007
e-2117-07 Results of Poultry Breeding
e-2122-07 Results of Cattle Breeding
e-2123-07 Results of Pig Breeding
2128-08 Economic Accounts for Agriculture: Regions - Definitive Results for 2006 and
Semi-definitive Results for 2007
2129-08 Farm Structure Survey 2007 Results - Regions and Districts
2133-08 Orchards 2007
2201-08 Forestry and Hunting in 2007

Other information is published on the CZSO web pages:

www.praha.czso.cz - Czech Statistical Office, Capital City of Prague
http://vdb.czso.cz/vdb/en/index.jsp
www.czso.cz/eng/redakce.nsf/i/agriculture_ekon