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those of summer with petals rudimentary or lacking—fls. never opening but self-pollinated within the closed calyx (cleistogamous). (Fig. 3936.) The showy...

Leopold’s work in it were important precursors to the environmental movement that coalesced around the time of the first Earth Day. Published in 1949, shortly...

which describes and discusses activity in 30 different countries, was published by Bloomsbury Publishing in the UK and USA in May 2008.“Guerrilla Gardening:...

is by some retained in Dahlia and by others referred to Bidens; in this work it is described under Cosmos (C. diversifolius). Wilhelm miller. L. H. B...

biochemical (physiological) mechanism called self-incompatibility to discriminate between self- and non-self pollen grains. In other species, the male and...

main stem as a reddish expanding necrotic zone. The infection is generally self-controlling and stops in the spring. It can be prevented by removing mummies...

ineffective when night temperatures are below 55° F. Mangos are monoecious and self-fertile, so a single tree will produce fruit without cross pollination. Polyembryonic...

distribution of water of a site. The work of Howard T. Odum was also an early influence, especially for Holmgren [1]. Odum's work focused on system ecology, in...

susceptible to honey fungus[200].pf File:Apple tree flower.jpg Apples are self-incompatible; they must cross-pollinate to develop fruit. During the flowering...

species, in other words triticale is an allotetraploid. In earlier years most work was done on octoploid triticale. Different ploidy levels have been created...

densely arranged, either spherically or hemispherically on a plant. These work well in herbaceous borders. Perennials. Bushy and clumping. All are hybrids...

their agricultural endowment to the world is a testament to their time and work in reshaping, taming, and cultivating the flora indigenous to the Americas...

materials to work with from batch to batch, does not need to control the purity and nature of the organisms that will do the actual work of humus formation...

soon as the leaves fall. lf trees are thoroughly sprayed every year with self-boiled lime-sulfur or bordeaux mixture for the leaf-blight fungus, the black-knot...

Secretary-General’s Global Compact. In 1997, systems ecologists M.T.Brown and S.Ulgiati published their formulation of a quantitative sustainability index (SI) as a ratio...

tillage tools. There has been a development of tillage tools which will do the work without necessity of pruning the tops very high. The practice of tilling...

Wildlife Restoration Act, which placed an 11% tax on all hunting equipment. This self-imposed tax now generates over $700 million each year and is used exclusively...

(Netherlands). Cuttings and grafts are necessary for true offspring. Seeds work but you won't know what you have until it blooms. Main article: Pests and...

limits of DON in food and animal feeds at an advisory level . In 2003, US published a patent that is very promising for farmers to produce a trichothecene-resistant...

simultaneously. Such varieties as Kieffer and Bartlett are usually classed as self-sterile kinds, but the degree of sterility varies in different places and...