Linkage between root systems of three pioneer plant species and soil nitrogen during early reclamation of a mine site in Lusatia, Germany

2015 ◽  
Vol 23 (4) ◽  
pp. 357-365 ◽  
Author(s):  
Katja Boldt-Burisch ◽  
M. Anne Naeth ◽  
Bernd Uwe Schneider ◽  
Reinhard F. Hüttl
Keyword(s):  
Plant Species ◽  
Soil Nitrogen ◽  
Root Systems ◽  
Mine Site ◽  
Pioneer Plant

Pioneer plant species and fungal root endophytes in metal-polluted tailings deposited near human populations and agricultural areas in Northern Mexico

2021 ◽  
Author(s):  
Gustavo Flores-Torres ◽  
Anaid Penelope Solis-Hernández ◽  
Gilberto Vela-Correa ◽  
Aída Verónica Rodríguez-Tovar ◽  
Oscar Cano-Flores ◽  
...  
Keyword(s):  
Plant Species ◽  
Human Populations ◽  
Root Endophytes ◽  
Northern Mexico ◽  
Pioneer Plant ◽  
Fungal Root Endophytes ◽  
Agricultural Areas

scholarly journals Potassium Use Efficiency of Plants

2020 ◽  
pp. 119-145
Author(s):  
Philip J. White ◽  
Michael J. Bell ◽  
Ivica Djalovic ◽  
Philippe Hinsinger ◽  
Zed Rengel
Keyword(s):  
Genetic Variation ◽  
Plant Species ◽  
Root Systems ◽  
Utilization Efficiency ◽  
Nonrenewable Resources ◽  
K Fertilizer ◽  
Potassium Use Efficiency ◽  
Use Efficiency ◽  
K Concentration ◽  
Anatomical Adaptation

AbstractThere are many terms used to define aspects of potassium (K) use efficiency of plants. The terms used most frequently in an agricultural context are (1) agronomic K use efficiency (KUE), which is defined as yield per unit K available to a crop and is numerically equal to the product of (2) the K uptake efficiency (KUpE) of the crop, which is defined as crop K content per unit K available and (3) its K utilization efficiency (KUtE), which is defined as yield per unit crop K content. There is considerable genetic variation between and within plant species in KUE, KUpE, and KUtE. Root systems of genotypes with greatest KUpE often have an ability (1) to exploit the soil volume effectively, (2) to manipulate the rhizosphere to release nonexchangeable K from soil, and (3) to take up K at low rhizosphere K concentrations. Genotypes with greatest KUtE have the ability (1) to redistribute K from older to younger tissues to maintain growth and photosynthesis and (2) to reduce vacuolar K concentration, while maintaining an appropriate K concentration in metabolically active subcellular compartments, either by anatomical adaptation or by greater substitution of K with other solutes in the vacuole. Genetic variation in traits related to KUpE and KUtE might be exploited in breeding crop genotypes that require less K fertilizer. This could reduce fertilizer costs, protect the environment, and slow the exhaustion of nonrenewable resources.

Thomas K. Pavlychenko: Pioneer Weed Experimentalist

Weed Science ◽  
1982 ◽  
Vol 30 (4) ◽  
pp. 434-440
Author(s):  
Carol J. Bubar ◽  
Ian N. Morrison
Keyword(s):  
Plant Species ◽  
Chemical Control ◽  
Plant Competition ◽  
Root Systems ◽  
Weed Science ◽  
Weed Biology ◽  
Classical Studies ◽  
Crop Ecology ◽  
The University

Thomas Karp Pavlychenko's pioneering investigations on the root systems of crops and weeds and the results of his research on weed biology and ecology at the University of Saskatchewan in the 1930's and 1940's provided the foundation for many of the principles of modern weed science. His classical studies in which he quantified the distribution and length of roots of many plant species continue to be regarded as being of unsurpassed caliber. In addition to his work in the areas of crop ecology and plant competition, Pavlychenko is also noted for his many contributions relating to the cultural and chemical control of weeds. In this paper, a brief chronicle of Pavlychenko's life and major accomplishments during his remarkable career at the University of Saskatchewan and later with the American Chemical and Paint Company is presented.

scholarly journals Community-level competition between five Namaqualand pioneer plant species

1997 ◽  
Vol 63 (1) ◽  
pp. 1-3 ◽  
Author(s):  
H. Rösch ◽  
M.W. van Rooyen ◽  
G.K. Theron
Keyword(s):  
Plant Species ◽  
Community Level ◽  
Pioneer Plant
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