agriculture biologique
Field Practices of Organic Farming
organic farming definition
organic farming advantages
intensive farming
organic agriculture journal
organic food history
Factors Affecting Field Practices of Organic Farming :
Research investigations under controlled conditions are very useful to delineate the specific impacts of varied organic amendments on arid and semi-arid soil properties. However, other major factors do affect the outcomes of field practices of organic farming. Among these factors are the following :
4.1. Chemical composition and nature of organic amendments.
4.2. Decomposition, reactions, chemical conversions and by-products.
4.3. Availability of organic amendments.
4.4. Farming systems and agronomic practices.
Before we go into discussion of the impact of these factors it would be of significance to review the varied types of organic amendments which are currently used and applied to the soils of the Region.
Types and Sources of Natural Organic Amendments :
i- Of Animal Origin:
* Cattle
* Small ruminants.
* Birds and poultry.
* Biogas slurry.
* Slaughter house by products (Blood and bone meal).
* Fish meal.
ii- Of Plant Origin :
* Field crop residues.
* Composted plant by-products.
* Sorted towen refuse.
* Aquatic weeds (Hyacinth).
* Green manures.
* Biofertilizers.
iii- Of Human Origin:
* Sewage sludge.
* Urban garbage.
iv- Of Industrial and Synthetic Origin:
* Petroleum by products.
* Synthetic soil conditioners.
The use of the highly variable sources, chemical composition and nature of the potential organic amendments are expected to have varied impacts under field practices of organic farming. The soil application of varied organic amendments lead to different reactions, functions and fates under varied arid soil and environmental conditions. The following discussion will illustrate some of the main concepts that should be taken into consideration.
Field Practices of Organic Farming
organic farming definition
organic farming advantages
intensive farming
organic agriculture journal
organic food history
Factors Affecting Field Practices of Organic Farming :
Research investigations under controlled conditions are very useful to delineate the specific impacts of varied organic amendments on arid and semi-arid soil properties. However, other major factors do affect the outcomes of field practices of organic farming. Among these factors are the following :
4.1. Chemical composition and nature of organic amendments.
4.2. Decomposition, reactions, chemical conversions and by-products.
4.3. Availability of organic amendments.
4.4. Farming systems and agronomic practices.
Before we go into discussion of the impact of these factors it would be of significance to review the varied types of organic amendments which are currently used and applied to the soils of the Region.
Types and Sources of Natural Organic Amendments :
i- Of Animal Origin:
* Cattle
* Small ruminants.
* Birds and poultry.
* Biogas slurry.
* Slaughter house by products (Blood and bone meal).
* Fish meal.
ii- Of Plant Origin :
* Field crop residues.
* Composted plant by-products.
* Sorted towen refuse.
* Aquatic weeds (Hyacinth).
* Green manures.
* Biofertilizers.
iii- Of Human Origin:
* Sewage sludge.
* Urban garbage.
iv- Of Industrial and Synthetic Origin:
* Petroleum by products.
* Synthetic soil conditioners.
The use of the highly variable sources, chemical composition and nature of the potential organic amendments are expected to have varied impacts under field practices of organic farming. The soil application of varied organic amendments lead to different reactions, functions and fates under varied arid soil and environmental conditions. The following discussion will illustrate some of the main concepts that should be taken into consideration.