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The roots are laid on a flat surface and the number of intersections between the roots and random straight lines are counted. Total root length is the...Read more
A heat-labile substance toxic to nitrite-oxidizing bacteria was present in the outer tissues of roots of Hyparrhenia filipéndula; in the summer (Nov.-...Read more
In a 2nd year F. pratensis ley 5 values for belowground production (BGP) were estimated using 2 field methods: soil coring and ingrowth mesh bags. Soi...Read more
Water content and ion concentration gradients were measured in soil near a plane of onion seedling roots. Using the water content-matric potential rel...Read more
Extracts of the roots of Hyparrhenia filipéndula and other grasses were tested against soil enrichment cultures of NH3-and NO2 oxidizers, by measuring...Read more
A mathematical model was constructed to simulate various above-ground and below-ground compartments of the producer subsystem for a shortgrass prairie...Read more
Describes a study in two-36-year-old stands of P. radiata to determine the effects of a heavy thinning in one of them at 30 years of age on the unders...Read more
Anthoxanthum odoratum, Holcus lanatus, Hypochoeris radicata, Lolium perenne, Plantago lanceolata and Rumex acetosa ('treatment' spp.) were grown separ...Read more
A series of root-pruning experiments was performed to simulate the effects of grazing by root-feeding herbivores on B. gracilis. Approx. 37% (c. 22 mg...Read more
Roots of Hyparrhenia filipéndula contained a water-soluble, heat-labile and dialysable substance which inhibited nitrifying bacteria. Alcohol extracts...Read more