Demand functions for fertilizer in South Africa
نویسندگان
چکیده
منابع مشابه
Sugarcane Nutrition and Fertilizer Use in South Africa
In South Africa during the past four decades considerable research has taken place on the nutrient requirements of sugarcane. Consequently marked changes have occurred in patterns of fertilizer use. The value of N, P and K fertil~zers for cane production is reviewed using field experimental data. Correlations established between soil and leaf analysis and crop responses to various nutrients are...
متن کاملFERTILIZER IN SUB-SAHARAN AFRICA: Breaking the Vicious Circle of High Prices and Low Demand
Fertilizer is a powerful productivity-enhancing input, but SSA uses very little. Historical trends are abysmal (Figure 1). In 1970, SSA used <5kg/ha while other developing regions used >15 kg/ha. In the 25 years from 1970 to 1995 fertilizer consumption grew only .23 kg/ha/year. Current use is only 9 kg/ha, down from OBJECTIVES AND METHODS: The research highs of 11-12. This contrasts sharply wit...
متن کاملa time-series analysis of the demand for life insurance in iran
با توجه به تجزیه و تحلیل داده ها ما دریافتیم که سطح درامد و تعداد نمایندگیها باتقاضای بیمه عمر رابطه مستقیم دارند و نرخ بهره و بار تکفل با تقاضای بیمه عمر رابطه عکس دارند
The Effect of South African Geopolitical Position in the Development of Cinema in South Africa
This paper will discuss about the role of the geopolitical location of South Africa in the development of movie and the cinema industry in this country. Despite of bringing ci-nema to South Africa by white Europeans, but the development of this phenomenon is mostly due to the geopolitical position of this country. It is interesting to know that ci-nema reached Africa in much the same time as it...
متن کاملFactors Affecting Phosphorus Nutrition and Fertilizer Use by Sugarcane in South Africa
In the South African sugar industry during the past sixty years considerable research has taken place in the field, laboratory and glasshouse with regard to the phosphorus requirement of sugarcane. Reference is made to the amounts ofP used by sugarcane and to the economics of fertilization. The value of phosphatic fertilizer for cane production is reviewed using available field experimental dat...
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: Agrekon
سال: 1972
ISSN: 0303-1853,2078-0400
DOI: 10.1080/03031853.1972.9523896