منابع مشابه
Enhancing Biodiversity With and Within Agroforestry Plantings
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In response to the vast loss of prairie area in western and southern Minnesota and the concern over plant genetic loss and soil erosion that resulted, this study set to determine the success of prairie reconstruction along Minnesota roadways. Areas around rest stops on major highways were seeded with prairie plants. As nitrogen is commonly limited in natural environments, legumes-known for thei...
متن کاملRandomness of Mating in Isolated Polycross Plantings of Maize.
ATING of any naturally outbreeding organism is commonly assumed to be AI at random in the absence of artificial controls. This assumption is basic to many of the mathematical models used in population genetics. I t may have validity for animals, particularly in populations of relatively long standing. In some plants, however, differences in time of maturity of the male and female flowers arisin...
متن کاملPointsVIEW When Are Native Species Inappropriate for Conservation Plantings ?
introduced into the United States, and black wattle (Acacia mearnsii), a species native to Australia that was introduced to South Africa. In response to criticism from environmental and natural resource conservation communities (e.g., Olson and Knopf 19867), many US federal agencies and nongovernmental organizations turned from nonindigenous species to species native to North America for use in...
متن کاملOptimal Sequential Plantings of Corn and Soybeans Under Price Uncertainty
Optimal crop choice and fertilizer applications depend on the stochastic dynamics of commodity prices, fertilizer prices, and the agronomic e↵ects of rotation versus monoculture. The e cient decision rule accounts for real option values associated with maintaining land disposition in an environment with highly uncertain future prices and irreversible past planting decisions. We parameterize a b...
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ژورنال
عنوان ژورنال: HortScience
سال: 1996
ISSN: 0018-5345,2327-9834
DOI: 10.21273/hortsci.31.4.671a