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A marking method for Hylemya (Erioischia) brassicae (Bch.), in which the flies were fed on a sucrose solution containing radioactive phosphorus (32P) ...
Read moreA simple model is proposed relating numbers of dispersing insects to distance from a release point and time. One form of the model, which is explained...
Read moreVegetation cover and soil development were studied on abandoned PFA (pulverized fuel ash) lagoons in southern England, covering 7-24 years. The plant ...
Read moreTen species of Umbelliferae were examined with regard to the time of year at which seedlings emerged and the survival of seeds in cultivated soil. The...
Read moreThe fitted lines relating total and matric suctions to water content of a coarse sandy loam were significantly different but nevertheless very similar...
Read moreAn empirical model used to standardize data on root investigations was P = 100 (1-e-fx) where P was the percentage of roots in x cm of soil, and f was...
Read moreSeedlings of Matricaria matricarioides, M. recutita and Tripleurospermum maritimum ssp. inodorum which emerged in the field from January to June took ...
Read moreMonocultures and mixtures of crimson clover and ryegrass (Lolium multiflorum) were grown in filtered air or 0.03 or 0.09 p.p.m. O3 concentrations for ...
Read moreA new instrument for the estimation of the total length of a washed sample of roots is described. It utilizes a photoelectric method to count the numb...
Read moreTwo barrier beaches were compared with respect to vegetation patterns and soil compaction. One had been widely used by off-road vehicles the other had...
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