Migratory Cotton Pickers in Arizona.
نویسندگان
چکیده
منابع مشابه
Lygus Control Decision Aids for Arizona Cotton
Changes in insecticide use, available pest control technologies, and local crop ecology together with severely depressed cotton prices place a renewed premium on Lygus control decision aids for Arizona cotton. As part of an on-going program to develop research-based Lygus management recommendations, we investigated the impact of various timings of chemical controls on Lygus population dynamics,...
متن کاملCotton IPM in Arizona: A Decade of Research, Implementation & Education
Pest management in Arizona during the 1990’s has been filled with unique challenges and solutions. This tumultuous period was dotted with pest outbreaks, grower adaptation and perseverance, and spectacular recovery and progress. The elements that helped broker these tremendous successes cotton growers now enjoy—at least with respect to pest management— were comprised of multiple groups who work...
متن کاملOccupational hazards and health cost of women cotton pickers in Pakistani Punjab
BACKGROUND Farm workers and female cotton pickers are exposed to residual impacts of pesticide use in cotton production, in addition to dust, ultraviolet radiation, etc. Cotton picking causes various health hazards among cotton pickers with varied health cost. A soil bacterium known as Bacillus thuringiensis (Bt) is incorporated in cotton seed through genetic modification and it has resistance ...
متن کاملThree Dimensional Colour Pickers
Colours are three dimensional data. However, all commercial colour pickers project three-dimensional (3-D) colour spaces into two dimensional (2-D) palettes. The projection often results in a set of colours perceptually inappropriate to describe the data they present. This paper initially compares several popular 2-D colour pickers and then describes some novel colour pickers which allow colour...
متن کاملMortality Factors Affecting Whitefly Populations in Arizona Cotton Management Systems: Life Table Analysis
Direct-observation studies were conducted in replicated experimental plots to identify causes and estimate rates of mortality of whiteflies in cotton over the course of six generations from late June through late October. In plots receiving no whitefly or Lygus insecticides, predation and dislodgment were major sources of egg and nymphal mortality, and overall survival from egg to adult ranged ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Educational Sociology
سال: 1940
ISSN: 0885-3525
DOI: 10.2307/2262291