نتایج جستجو برای: plantings

تعداد نتایج: 1003  

2004
Ronald C. Schmidtling

Restoration of many forest ecosystems will require replanting of native species. Choosing the proper seed source is essential to ensure long-term success of restoration plantings, especially if local seed sources are unavailable or genetically degraded. A successful restoration requires seed sources that are adapted to the climate and site, and are genetically diverse to allow subsequent reprod...

Journal: :Genetics 1959
M G Gutierrez G F Sprague

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...

Journal: :The Horticulture Journal 2021

The growth and yield of tomatoes in greenhouses covered by heat insulation film were investigated Ishigaki, a subtropical area Japan with high temperature solar radiation. High-density planting was carried out June, July, August, October, November, low node-order pinching system. plants grown two greenhouses, one thermal barrier (TBF) for the other polyolefin (PO). Under TBF, maximum up to 3.6°...

Journal: :Arthropod-plant Interactions 2021

Abstract Sugarcane aphids [ Melanaphis sacchari (Zehntner)] have become a significant pest of grain, forage, and sweet sorghum Sorghum bicolor (L.) Moench] in the USA recent years. However, effects sugarcane aphid damage on juice quality not been well studied. A three-year (2015–2017) field study was conducted at Tifton, GA to assess planting date (April, May, or June planting) cultivar respons...

2008
Amy C. Ganguli David M. Engle Paul M. Mayer Samuel D. Fuhlendorf

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...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید