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Factors responsible for mortality and survival after autumn and spring burns were studied for B. attenuata, B. leptophylla, B. menziesii and B. priono...
Read moreThe growth of S. molesta (see WA 23, 2847) was analysed under a range of artificial and natural environmental conditions. Growth was exponential. The ...
Read moreA range of densities of B. sterilis were sown in pots with winter wheat cv. Avalon in 4 soils; a heavy clay loam and a lighter, sandy soil from Oxford...
Read moreArticle 9 of the International Treaty on Plant Genetic Resources for Food and Agriculture addresses farmers' rights and recognizes the crucial role th...
Read moreObservations on two burning regimes during a 3-year period in Machakos district (5200 ft. alt., rainfall 25 in./year) showed that these thickets can b...
Read moreA study of naturally colonizing Betula pubescens and B. pendula on 10-yr-old soil cover up to 1 m deep on a 32-ha tailing near Garpenberg, Sweden. The...
Read moreDensity of jojoba (Simmondsia chinensis) was similar but plant size and cover were greater inside than outside a 48-yr-old livestock (cattle) exclosur...
Read moreResults are reported from a study of leaf area dynamics in 100 plots in stands of lodgepole pine (Pinus contorta var. latifolia, age range 67-134 yr) ...
Read moreIn field experiments in N. Finland, 80 study plots (5×5 m) in mixed pine (Pinus sylvestris)/mountain birch (Betula tortuosa) woodland were irrigated w...
Read moreThe response to density of the annual Agrostemma githago were investigated over a wide range of densities in pure populations and also in the presence...
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