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Voorspellen van landbouw‐opbrengsten
Author(s) -
Ignatius J. G. W.
Publication year - 1952
Publication title -
statistica neerlandica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 39
eISSN - 1467-9574
pISSN - 0039-0402
DOI - 10.1111/j.1467-9574.1952.tb00996.x
Subject(s) - agriculture , term (time) , position (finance) , livestock , geography , agricultural economics , agricultural science , environmental science , forestry , business , economics , physics , archaeology , finance , quantum mechanics
Summary Prediction of harvests. With respect to the prediction of harvests in agriculture a distinction can be made between short‐term estimates and actual long‐term predictions. Harvest estimates are made by the Municipal Advisory Committees for Agricultural Statistics headed by the Burgomasters. These estimates are made either just before (provisional harvest estimate) or immediately after the harvest (definitive harvest estimate). During a considerable part of the year estimates are made with respect to the development and the expected harvest by personnel of the agricultural and horticultural information services, the state of the crops being expressed in a single figure. Long‐term prediction of harvests are frequently based on relationships between the weather factors and the yields. In the Netherlands some investigations have been carried out in this connection by members of the Royal Netherlands Meteorological Institute and of the agricultural and horticultural information services. Predictions with respect to the development of the livestock position, particularly pigs, are altogether of a different nature. Such predictions are made on the strength of monthly data regarding the number of female animals covered, which information is obtained by means of random tests. Predictions are also made in the fisheries industry, particularly with respect to the herring catches landed.