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The contribution of N remobilization to the seasonal growth of field-grown Malus domestica (apple) trees was measured using two different techniques. 'Fuji' trees grafted on M.9 apple rootstocks were planted in the field and fertilized and irrigated for two growing seasons. During the second year, the trees received 15N-labelled fertilizer and destructive(More)
Environmentally sound management of N in apple orchards requires that N supply meets demand. In 1997, newly planted apple trees (Malus domestica Borkh. var. Golden Delicious on M.9 rootstock) received daily applications of N for six weeks as Ca(15NO3)(2) through a drip irrigation system at a concentration of 112 mg l(-1) at 2-8, 5-11 or 8-14 weeks after(More)
Organically-certified orchard floor management was assessed for its ability to improve soil fertility and biological activity and apple orchard performance. ‘Ambrosia’/B9 apple was maintained for the first six growing seasons with four orchard floor treatments, including 1) annual compost application; 2) in-row application of mown alfalfa grown between the(More)
Biosolids may improve the ecological function of degraded semiarid grasslands, but an understanding of the plant community is essential. An experiment was established in 2001 to determine the effects of a single surface application of biosolids on soil aggregate stability and the composition of the plant community in a semiarid grassland in British(More)
The appearance of AIDS and recent diagnostic and treatment advances has forced the medical profession to become more sophisticated in approaching sexually transmitted diseases. Effective prevention and quality care are fundamental to a sexual health consultation. Obtaining an accurate history on which to base prevention counselling is essential. Treatment(More)
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