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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 moreA heat-labile substance toxic to nitrite-oxidizing bacteria was present in the outer tissues of roots of Hyparrhenia filipéndula; in the summer (Nov.-...
Read morecf. F.A. 26 No. 1678.] Gypsum electrical-resistance blocks were used to follow changes in soil moisture on four forested sites and one grass-covered s...
Read moreWater movement in response to gradients of water potential in the soil-plant-atmosphere catena is considered. An approximate solution is presented of ...
Read more(S. & F. XXVIII [657]). Soil-moisture changes were followed for three years; the plantations varied in age from 20 to 32 years and were on soils d...
Read moreAn approximate solution is presented of the differential equation describing soil-moisture flow towards a root absorbing water at a periodically varyi...
Read moreA mathematical model was constructed to simulate various above-ground and below-ground compartments of the producer subsystem for a shortgrass prairie...
Read moreOryzopsis holciformis (M.B.). Hack. (hairy ricegrass) was sown in loess soil in containers 60 cm deep at densities of between 160 and 3200 seedlings/m...
Read moreA non-destructive stain technique for quantifying root growth was developed. Red, blue and yellow chlorotriazinyl dyes are individually applied as a s...
Read moreIn continued work [cf. F.A. 25 No. 54], tensiometers and electrical resistance blocks were used to measure water tension and, indirectly, water conten...
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