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گواهی نمایه سازی مقاله Soil acidification and lime quality: sources of soil acidity, its effects on plant nutrients, efficiency of lime and liming requirements

عنوان مقاله: Soil acidification and lime quality: sources of soil acidity, its effects on plant nutrients, efficiency of lime and liming requirements
شناسه (COI) مقاله: JR_AAJ-2-9_002
منتشر شده در ماهنامه پیشرفت های کشاورزی در سال ۱۳۹۲
مشخصات نویسندگان مقاله:

n Athanase - Soil quality and plant nutrition program, Natural Resources Management Direction, Rwanda Agriculture Board (RAB), Rwanda, Kigali P.O. Box 5016.
r Vicky - Soil quality and plant nutrition program, Natural Resources Management Direction, Rwanda Agriculture Board (RAB), Rwanda, Kigali P.O. Box 5016.
m.n Jayne - Agricultural resources department, Kenyatta University, P.O. Box 43844-00100, Kenya, Nairobi.
h Sylvestre - Faculty of Agriculture, Higher Institute of Agriculture and Animal Husbandry, P.O.BOX, 210, Musanze.

خلاصه مقاله:
Agriculture sectors support economy of most developing countries. In Sub-Sahara Africa, the agriculture is predominantly based on rain-fed agricultural production of small, semi-subsistence, and increasingly fragmented farms. Thus, the farming is intensive and fields are concentrated on valleys, steep hillsides and mountains. This results in soil acidity, low fertility, accelerated soil erosion and low crop yields. Soil acidity affects crops in many ways and its effects are mostly indirect, through its influence on chemical factors such as aluminium (Al) and manganese (Mn) toxicity, calcium (Ca), phosphorus (P) and magnesium (Mg) deficiencies and biological processes. The application of lime believed to enhance soil health status through improving soil pH, base saturation, Ca and Mg. It reduces Al and Mn toxicity and increases both P uptake in high P fixing soil and plant rooting system. However, the liming effects depend on its source, its characteristics, composition, purity and how finely it is ground. The estimation of lime requirement is constraining its use for smallholder farmers and young soil scientists. This study therefore aimed at highlighting the most causes of soil acidification, lime quality and lime requirement. This review article will serve as a guide for farmers and young soil scientists in addressing soil acidityand properly determining lime requirement

کلمات کلیدی:
Soil ph Al toxicity Lime purity Crops response Lime requirement Lime solubility

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