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The faecal output of geese (Anseriformes) is often measured in the course of bioenergetic or flock management studies. The first objective of this inv...
Read moreSoil respiration is commonly determined by measuring the rate of increase in the CO2 concentration within a chamber placed on the soil surface, with a...
Read moreSoon after the start of the transition to market economy in the early 1990s, Poland has experienced both a dramatic decline in the fertility rate and ...
Read moreThis paper addresses the errors that are associated with the long-term prediction of weed densities, and the effect of these errors on the performance...
Read moreObservations were made on sugar beet fields in Cambridgeshire and West Suffolk, UK, in April-May 1977 and 1978 from emergence of seedlings until they ...
Read moreThe effect of temperature upon the boring activity and survival of a sample of Limnoria spp. taken from Southampton Water was investigated experimenta...
Read moreThe effects of cultivation on the number of seeds of different spp. in arable land were investigated at 4 sites over several yr. Soil cores were obtai...
Read moreThe rate of evaporation from a crop is expressed in terms of weather parameters and a quantity rS derived from profiles of temperature, humidity, and ...
Read moreThe relationship between cereal preference and rate of energy intake was studied for the mallard and 4 types of cereal grain. In a field experiment at...
Read moreSwedes cv. Victory and sugar beet cv. Klein E were grown at 2 sites in S.E. England and protected by a N.-S. screen with 50% permeability; the height ...
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