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In this technique the roots are laid out on a flat surface and a count is made of the number of intersections between the roots and random straight li...
Read moreRoots of Hyparrhenia filipéndula contained a water-soluble, heat-labile and dialysable substance which inhibited nitrifying bacteria. Alcohol extracts...
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 moreGrowth of an undefoliated stand of Italian ryegrass in the later stages of establishment was studied in detail for 6 months from winter to summer. Num...
Read more8 Mediterranean populations of P. tuberosa covering the climatic range from Morocco and Israel (severe summer drought, growing season 5-6 months) to N...
Read more1-yr-old seedlings of Pueraria lobata were planted in 1955 about 1.5 m apart along a long cultivated strip 2.5 m wide on denuded soil and given NPK in...
Read moreEffects were studied of machine-clearing of mature Tarchonanthus/Acacia thicket factorially combined with sowing 2.5 lb/ac of a seeds mixture mainly c...
Read more2 heath fires in 15-yr-pld Calluna vulgaris in autumn under dry windy conditions consumed 93% of the available fuel. In one fire, crown temperature re...
Read moreA map is given showing the distribution in East Africa of 6 ecological zones denned on the basis of rainfall and evaporation data. Of the vegetation t...
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