Obituary: The Administration of Ferrous Iodide and Linoleic Ralph HIoffmann: E. H. Recent Deaths .... 288 Acid to Rats Deprived of Vitamin A: DRS. LUCILLE L. REED, LAFAYETTE B. MENDEL and HUBERT Scientific Events: BRADFORD VICKERY. Effect of Age and Sex on The Datid Dutnlap Observatory; NewBuaildng for Resistance of Daphnids to Mercuric Chloride: PROEntomology at tue University of C alif ornia;...

Study of soil characteristics and of processes by which plants take up nutrients from the soil is therefore extremely valuable in devising effective methods of farming. For example, such study can determine which fertilizer and how much of it should be applied to a particular soil, or when and how it should be applied. Similarly, a study of soil moisture can indicate the exact irrigation needs ...

Ethylene is a gaseous plant hormone involved in many aspects of plant life, including seed germination, flower senescence, abscission, and fruit ripening (Abeles et al., 1992). It also plays a very important role in the responses of plants to both biotic and abiotic stresses (Abeles et al. The production of ethylene is tightly regulated by internal signals, and usually increases in response to ...

Nutrient and water uptake from the soil is essential for plant growth and development. In the root, absorption and radial transport of nutrients and water toward the vascular tissues is achieved by a battery of specialized transporters and channels. Modulating the amount and the localization of these membrane transport proteins appears as a way to drive their activity and is essential to mainta...

The age of true designer plant oils has arrived. Using the tools of biotechnology, it is now possible to modify the fatty acid content of oilseed plants to change the relative abundance of individual fatty acids in seed oil for health purposes or to produce nutritional fatty acids not normally found in crop plants. Fats and oils are an essential part of the human diet, and as a species we consu...

The accumulations and partitions of mineral elements and dry matter in upland cotton plants were followed: A, at five-day intervals for thirty days starting with the seed with the plants growing in Hoagland's solution in a warm-to-hot summer greenhouse, and B, at 15-day intervals from thirty days after planting to maturity in field plantings. The latter data are not original but are recalculate...

Tomato plants (Lycopersicon esculentum L. var. Ailsa Craig) were grown in water culture in nutrient solution in a series of 10 increasing levels of nitrate nutrition. Using whole plant data derived from analytical and yield data of individual plant parts, the fate of anion charge arising from increased NO(3) assimilation was followed in its distribution between organic anion accumulation in the...

(1) Institute for Landscape Ecology and Resources Management (ILR), Research Centre for BioSystems, Land Use and Nutrition (IFZ), Justus Liebig University Giessen, Giessen, Germany, (2) Institute of Meteorology and Climate Research Atmospheric Environmental Research (IMK-IFU), Garmisch-Partenkirchen, Germany, (3) Institute for Plant Ecology, Research Centre for BioSystems, Land Use and Nutritio...