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Competition between the 2 strains was studied in pot experiments. It was found that F1 Selma (FS) suppressed Early Hybrid (EH) in mixed culture, altho...
Read moreIn competition experiments the suppression of Early Hybrid by F1 Selma was not eliminated by increasing nutrient supply levels up to several times the...
Read moreThere is a clear need to increase our ability to predict the consequences of environmental change. The seven main approaches that are currently used a...
Read moreWheat cv. Concorde, Chenopodium album, Agropyron repens [Elymus repens] and Spergula arvensis were grown in pure stands and in mixtures of weeds with ...
Read moreThe responses of Auchenorhyncha to management by cutting of calcareous Arrhenatherum-dominated grassland were examined in a field experiment in easter...
Read moreAn analysis of the arthropod pest complex on tea from 14 geographical locations showed that the numbers of pests depend on the length of time for whic...
Read moreThe effect of copper sulphate as an algicide is reviewed briefly. In experiments in which Anabaena flos-aquae and Scenedesmus quadricauda were exposed...
Read moreA field experiment on lucerne in British Columbia in which populations of Acyrthosiphon pisum (Harris) were harvested at various rates is described an...
Read moreThe consumption of legume seed by grazing sheep was assessed in a Mediterranean grassland in NW Syria, during the summers of 1986 and 1987. Large padd...
Read moreIt should be possible to design agroecosystems to reduce the severity of insect pest problems. Ecological theory about stability should be relevant wh...
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