oa Agriprobe - The effect of pathogenic fungi on seedlings in the George district

Volume 7, Issue 3
  • ISSN : 1810-9799



In the post-modern world, nitrogen (N) is the first limiting nutrient in crop production. Application of N in dairy pasture systems has become very expensive. Alternative sources of nitrogen need to be incorporated into pasture management systems for sustained profitability. White clover (), a leguminous species that forms a symbiotic relationship with a nitrogen fixing bacteria called bv. (Brockwell et al., 1995), is an inexpensive substitute of inorganic N. The rhizobia fix atmospheric dinitrogen into plant-available sources of nitrogen, rendering white clover nutritionally superior to grasses (McDonald et al., 2002). White clover contributes significantly to the N status in grassclover mixed swards (Gylfadóttir et al., 2007). It is also economically the most important of the clover species (Van Keuren and Hoveland, 1985).

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