Christopher J. Graves

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UNLABELLED Environmental nutrient enrichment from human agricultural and waste runoff could cause changes to microbial communities that allow them to capitalize on newly available resources. Currently, the response of microbial communities to nutrient enrichment remains poorly understood, and, while some studies have shown no clear changes in community(More)
Parents can influence the phenotypes of their offspring via a number of mechanisms. In harvester ants, whether female progeny develop into workers or daughter queens is strongly influenced by the age and temperature conditions experienced by their mother, which is associated with variation in maternal ecdysteroid deposition in fertilized eggs. In many(More)
The effects of 96 combinations of nitrogen, potassium and magnesium were studied in four tomato crops grown in peat. Yield responses were found to each of these nutrients. In a late-planted crop, nitrogen also increased the early yield. The nutrient contents of the leaves corresponding to maximum yield were 4.5–5.1% N, 4.4–5.6% K and 0.31–0.40% Mg. Yields(More)
REPETITIVE MECHANICAL injury to the skin is likely to play a contributory role in the development and possibly the cause of some industrial dermatoses. Simple clinical observation would suggest that industrial dermatitis often occurs at the sites of minor mechanical injury and that such injury is an important contributory cause of the condition (KLIGMAN ET(More)
The effects of a fritted micronutrient mixture on the growth and yield of tomatoes were studied in relation to the pH of the peat substrate. The treatments consisted of three rates of application of the fritted micronutrient mixture (0, 200, 500 g/m3 F 253A) in factorial combination with four rates of liming (average pH values 4.5, 5.1, 5.8 and 6.7). Three(More)
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