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Competitive relationships among Amaranthus retroflexus, Chenopodium album, Echinochloa crus-galli and Solanum nodiflorum were investigated under field...
Read moreExperiments were conducted (1) to determine whether resistance to MCPA would subside in a population of Ranunculus acris subsp. acris after ending a 3...
Read moreEffects of intraspecific competition in Callosobruchus maculatus and C. rhodesianus on cowpeas were studied in the laboratory in order to predict whet...
Read moreCattle egrets (Ardeola ibis) feeding in dairy pastures in the south-western Cape, South Africa, ate mainly grasshoppers, caterpillars and earthworms, ...
Read moreThe production of current season growth by Coleogyne ramosissima was determined by length measurement in Sept. when the twigs were dormant. Percentage...
Read moreIn two series of experiments, the relative leaf growth rates (RA) and relative growth rates (RW) of seedlings of 8 onion cvs of diverse geographic ori...
Read moreA liquid displacement method is described for rapid measurement of volumes of individual detached leaves or other small plant parts with an accuracy o...
Read moreMany farmers are facing high economic risks if pollinator declines continue or temporal and spatial variation in wild bee communities cause reduced po...
Read moreThe following is virtually the author's summary. Since 1950, egg breakage has occurred with unprecedented frequency in the nests of peregrines (Falco ...
Read moreThe following is based largely on the author's summary of this account of laboratory investigations in Kenya [cf. RAE A 54 394]. Dust formulations of ...
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