Harm of direct application of fresh chicken manure

Chicken manure is a relatively high quality organic fertilizer containing pure nitrogen, phosphorus (P2O5) and potassium (K2O) of about 1.63%, 1.54%, and 0.085%. However, chicken manure is directly applied to crops without being treated or decomposed, and there are great harms and hidden dangers, mainly manifested in: 1 infectious diseases and insect pests. The feces contain coliforms such as coliforms and nematodes, and pests. Direct use can lead to the spread of pests and diseases, crops, and affect the human health of edible agricultural products. When unfertilized organic materials are fermented in the soil, they are prone to pathogens and pests. Lead to the occurrence of plant diseases and insect pests; 2 fermented seedlings. After the organic materials such as unfermented raw manure are applied to the ground, when the fermentation conditions are available, the fermentation is carried out under the action of microorganisms. When the fermentation site is closer to the root and the crop plants are smaller, the heat generated by the fermentation affects the growth of the crop and burns. Crop roots cause plant death in severe cases. 3 gas hazards. In the process of decomposition, harmful gases such as methane and ammonia are generated, causing acid damage and root damage to soil and crops. 4 soil is deprived of oxygen. The organic matter consumes oxygen in the soil during the decomposition process, causing the soil to temporarily be in anoxic state, which will inhibit crop growth. 5 fertilizer effect is slow. The nutrients in the unfermented and decomposed organic fertilizers are mostly organic or slow-acting, and cannot be directly absorbed and utilized by the crops. Only when the decomposition is converted into a quick-acting state can be absorbed and utilized by the crops, so that the fermenting effect is slowed down when the unfermented organic fertilizer is directly applied.
Huaxian Agricultural Technology Promotion Center Lu Shuguang

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