Journal ArticleDOI
Morphological Plasticity by Crop Plants and Their Potassium Use Efficiency
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TLDR
In conclusion, crops modify their root hair length as response to low K conditions and thereby maintain the uptake from sparingly soluble K sources.Abstract:
A decrease in the use of fertilizers and a decrease in soil fertility direct the research focus towards the ability of the crops to adapt to low potassium (K) conditions and to their ability to utilize sparingly soluble K sources. Pea (Pisum sativum), red clover (Trifolium pratense), lucerne (Medicago sativa L.), barley (Hordium vulgare), rye (Secale cerale), perennial ryegrass (Lolium perenne L.), and oilseed rape (Brassica napus oliefera) were grown in thin layers of soils to study their root morphological plasticity and ability to utilize different K pools at 26 and 60 mg exchangeable K kg−1 soil. The legumes (pea, red clover, lucerne) accumulated larger amounts of nitrogen but lower amounts of K than rye, ryegrass, barley, and oilseed rape. The differences in K accumulation correlated with root hair length (R 2 = 0.50). Rye had an outstanding root surface that in total as well as per unit root dry matter was twice that of the other crops. The ranking in decreasing order was rye, ryegrass, oil...read more
Citations
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Journal ArticleDOI
Mineral Nutrition of Higher Plants, 2nd edition, H. Marschner. Academic Press, London (1995), 889, (ISBN 0-12-473543-6). Price: 29.95 Pound Sterling
Journal ArticleDOI
Potassium in agriculture - status and perspectives
TL;DR: In this article, the authors summarized factors determining the plant availability of soil potassium (K), the role of K in crop yield formation and product quality, and the dependence of crop stress resistance on K nutrition.
Journal ArticleDOI
Crops and genotypes differ in efficiency of potassium uptake and use.
Zed Rengel,Paul Damon +1 more
TL;DR: This review assesses the available literature on differential uptake and utilization efficiency of K in farming systems and concludes thatcultivars with increased efficiency of uptake and usage of soil nutrients are likely to have positive environmental effects through reduced usage of chemicals in agriculture.
Journal ArticleDOI
Root phenotypes for improved nutrient capture: an underexploited opportunity for global agriculture.
TL;DR: Although the current understanding is sufficient to deploy root phenotypes for improved nutrient capture in crop breeding, this complex topic does not receive the resources it merits in either applied or basic plant biology.
Book ChapterDOI
Nutrient Sensing and Signalling in Plants: Potassium and Phosphorus
TL;DR: Recent advances in discovering molecular responses of plants to K and P deficiency by microarray experiments are reviewed, providing a comprehensive picture of adaptive mechanisms, but also with a large number of transcriptional markers that can be used to identify upstream components of K andP signalling pathways.
References
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Book
The Mineral Nutrition of Higher Plants
M. H. Martin,H. Marschner +1 more
TL;DR: This chapter discusses the relationship between Mineral Nutrition and Plant Diseases and Pests, and the Soil-Root Interface (Rhizosphere) in Relation to Mineral Nutrition.
Book
Mineral Nutrition of Higher Plants
TL;DR: In this article, the authors discuss the relationship between mineral nutrition and plant diseases and pests, and diagnose deficiency and toxicity of mineral nutrients in leaves and other aerial parts of a plant.
Journal ArticleDOI
Plant competition underground
TL;DR: Competitive ability in belowground competition is correlated with such attributes as root density, surface area, and plasticity either in root growth or in the properties of enzymes involved in nutrient uptake.
Journal ArticleDOI
Mineral Nutrition of Higher Plants, 2nd edition, H. Marschner. Academic Press, London (1995), 889, (ISBN 0-12-473543-6). Price: 29.95 Pound Sterling
Journal ArticleDOI
Phosphorus uptake by pigeon pea and its role in cropping systems of the Indian subcontinent
TL;DR: Pigeon pea was shown to be more efficient at utilizing iron-bound phosphorus than several other crop species, and this finding suggests that cultivation of pigeon pea increases total phosphorus availability in cropping systems with low available phosphorus.
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Hydrogen peroxide mediates plant root cell response to nutrient deprivation.
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