Nutrient imbalance

Paine, A. J. and Hockin, L. J. (1980). Nutrient imbalance causes the loss of cytochrome P-450 in liver cell culture formulation of culture media which maintain cytoch rome P-450 at in vivo concentrations. Biochem. Pharmacol. 29 3215-3218. 

MOLYBDENUM (In Biological Systems). Molybdenum is required in very low amouni.s by both plants and animals Nutrient imbalances involving molybdenum and copper have caused serious problems in cattle and sheep production. 

Symptoms of acute injury are frequently used to identify pollutant sources and to estimate dosage. These symptoms are considered characteristic of the pollutant particularly when they occur on species known to be susceptible to the toxicant. A skilled observer must be able to differentiate these symptoms from injury produced by plant diseases, nutrient imbalance, climatic stress, insect feeding, or soil-borne toxicants. The symptom syndrome may be further complicated by a variety of less characteristic acute and chronic symptoms in the plant community. Systematic field observations provide one of the most valuable means of evaluating an actual or potential air pollution problem, but the observer should recognize the complexity of evaluating the various symptoms which may be encountered. 

At any rate, boosting African crop production will require increased use of soil amendments. Natural soil fertility restoration during long fallow periods, as practised in traditional shifting cultivation systems, becomes less and less feasible with rising population pressure. Mineral fertilisers have been key components of strategies to increase crop yields and restore soil fertility (e.g. Quinones et al., 1997), yet their availability and use in SSA remain very low due to lack of production, transport and market infrastructures (Larson and Frisvold, 1996 Dudal, 2002). Nutrient imbalances have resulted in the loss of an estimated 700 kg N, 100 kg P and 450 kg K ha 1 from SSA cropland during the last 30 years, while... 

Sweden indicate that potassium will be an element in short supply in the future (Barkman Sverdrup, 1996). To understand how future forests will respond to nutrient imbalances caused by anthropogenic activities it is essential to understand the influence of EMF on mineral dissolution. 

Barkmati, A. Sverdrup, H. (1996). Critical loads of acidity and nutrient imbalance for forest ecosystems in Skane, Report 1. Department of Chemical Technology II, Lund University, Lund, Sweden. 64 p. 

Scotch pine (Pinus sylvestris L.), the main forest species on sandy soils or dry sites in Europe did not escape the present decay. The reduction of needle years and needle length and sparse foliage create the impression of thin crowns and sickness. Poor sandy soils in the plains were affected most which might be due to nutrient imbalances because of high input of ammonia from increased life stock. 

Sala, M. M., Karner, M., Arin, L., andMarrase, C. (2001). Measurement of ectoenzyme activities as an indication of inorganic nutrient imbalance in microbial communities. Aquat. Mkrob. Ecol. 23, 301-311. 

If you think your plants have a nutrient imbalance, consider having the leaves analyzed. These tests may be available from your local extension agent or a private laboratory. If symptoms are from a nutrient imbalance, there may not be sufficient time to add soil nutrients and for plants to take them up before the growing season ends and the plant dies. In such cases you ean spray your plant with a... 

Yet, many forest ecosystems are exposed to acid deposition far exceeding their critical loads. Although these forest ecosystems appear healthy, there may be a sudden detrimental change once the current buffering capacity is depleted. Cation leaching both from the forest canopy and forest soils is observed in some forest ecosystems. Continuous exposure to high levels of acid deposition can lead the forest to be in nutrient imbalance and thereby undermine forest health. 

Linder, S. (1995). Foliar analysis for detecting and correcting nutrient imbalances in Norway spruce. Ecol. Bull. 44, 178-190. 

Critical load of nitrogen This is normally defined with respect to eutrophication, and not to acidification. The critical load of nitrogen is the maximum deposition of nitrogen compounds that will not cause eutrophication or induce any type of nutrient imbalance in any part of the ecosystem (Table 3.8). 

To avoid an aggravation of soil acidification and nutrient imbalances a reduction of NOj (traffic) and NHj (agriculture) emissions is necessary. 

The committee recommends that bioavailability be specifically addressed in any evaluation of the safety of infant formulas. Other factors that should be considered for safety are tolerance, allergenicity, impact of gastrointestinal flora, and possible nutrient imbalances (if ratios or cofactors are important). While bioavailability is a factor considered under the proposed infant formula regulations, other factors are also of special importance to infants and should be specifically addressed in any evaluation of the safety of infant formulas. 

TOMLINSON, G.H. 1987. Acidic deposition, nutrient imbalance and tree decline a coranentary. In Effects of atmospheric pollutants on forests, wetlands and agricultural ecosystems (Hutchinsai, T.C., and K.M. Meema, eds.). Springer, Berlin, pp. 189-199. 

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