Root competition

Abdul-Wahab, A. S. "The toxicity of Johnsongrass excretions A mechanism of root competition" Master s Thesis, Louisiana State University, Baton Rouge, LA. 1964. 

Ge, Z., Rubio, G., and Lynch, J. R (2000). The importance of root gravitropism for inter-root competition and phosphorus acquisition efficiency Results from a geometric simulation model. Plant Soil 218,159-171. 

To account for increasing root competition, Reginato et al. (1990, 2(X)0) proposed to use a moving boundary approach ... 

In CaUfomia chaparral and Mediterranean bush vegetation, monoterpenes produced by above and below-ground plant parts accumulate in soil. Sequestration to soil is related to plant allelopathy, which improves root competitive ability to the host. 

A disadvantage of this technique is that isotopic labeling can cause unwanted perturbations to the competition between pathways through kinetic isotope effects. Whereas the Born-Oppenheimer potential energy surfaces are not affected by isotopic substitution, rotational and vibrational levels become more closely spaced with substitution of heavier isotopes. Consequently, the rate of reaction in competing pathways will be modified somewhat compared to the unlabeled reaction. This effect scales approximately as the square root of the ratio of the isotopic masses, and will be most pronounced for deuterium or... 

N. von Wiren, V. Romheld, T. Shioiri, and H. Marschner, Competition between micro-organisms and roots of barley and. sorghum for iron accumulated in the root apoplasm. TVeu P7(yw7. /T0 511 (1995). 

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