Conservation tillage is an effective sustainable production system for vegetables. No-till planters and transplanters and strip-till cultivation equipment are presently available for most vegetables. Lack of weed management tools (herbicides, cultivators, etc.) continues to be the cultural practice that limits adaptability of some vegetables to conservation tillage systems. Nitrogen management ...

Production of container longleaf pine (Pinus palustris Mill.) seedlings for reforestation and restoration exceeds that of bare-root production, but information on container production techniques has been slow to develop. Because outplanting success requires quality seedlings, interim guidelines were proposed in 2002 to assist nursery managers and tree planters in developing and using the best s...

, At present at least, quinine cannot be produced synthetically. Yet it is estimated that some 800 million persons are attacked every year in the tropics by malaria, and according to Sir Ronald Ross more than two million deaths occur annually from the disease. The economic Joss due to the disease is put down by Dr. Andrew Balfour at between ?52 and ?62 millions a year. Prior to 1880 the world's...

Development o f longleaf (Pinus palustris IMiII 1 and loblolly tP taeda L i pine seediings growing under three light conditions-full sunlight, 30% shade, and 50% shade-was evaluated Although there was i ~ t t l e difference between development or seedlings in 30% and 50"/0 shade, those grown in ful l sunlight were signiticantly larger than shaded seedlings in dlameter and In top and root dry we...