Fertilizer Efficiency

The fertilizer efficiency of ammonium chloride is better than ammonium sulfate in paddy fields. The main reasons are:

1.the use of ammonium chloride will not poison seedlings like ammonium sulfate that will produce poisonous gas hydrogen sulfide (H2S) ;

2. the existence of Cl- can not only inhibit the nitrification of NH4+, but also stimulate the proliferation of algae in rice fields. Part of the NH4+ are absorbed by algae to temporarily transform into slow nitrogen, which will reduce the nitrogen loss and prolong the fertilizer efficiency of Ammonium chloride fertilizer;

Ammonium chloride is an available nitrogen chemical fertilizer whose nitrogen content is 24% to 25%. It is a physiological acidic fertilizer and suitable for wheat, rice, corn, rapeseed and other crops. It have the effects of enhancing fiber toughness and tension and improving quality especially for cotton and linen crops. However, due to the nature of ammonium chloride, if the application is not right, it will bring some adverse effects to soil and crops.
Ammonium Chloride can promote photosynthesis and is conducive to forming fiber and increasing its toughness and tension. It can also control the concentration of soluble nitrogen compounds in rice plants and promote the formation of chlorogenic acid (C16H18O9) that is the “resistance substances” of rice blast, thereby reducing rice lodging and pest invasion. The use of ammonium chloride for cotton and other fiber crops have significant effects of increasing yield and fiber quality. The degree of acidification of ammonium chloride to soil is greater than that of ammonium sulfate. The reason is that ammonium chloride produce ammonium chloride after the selective absorption of NH4+ by crops while ammonium sulfate produce calcium sulfate. Because the solubility of the former is larger than the latter, so the calcium ion loss of the former is more than that of the latter, resulting that ammonium chloride is more easy for soil acidification and compaction. So the ammonium chloride for acid soil should be equipped with lime or other alkaline fertilizer, but should not be used for mixed application.

The Decomposition temperature of ammonium chloride is 337.8 °C. In this temperature, it dissociates into ammonia and hydrogen chloride and then , on cold exposure, re-synthesize small particles of ammonium chloride and white fog that is not easy to sink and very difficult to dissolve in water. The visible gas will change back to ammonium chloride.

ammonium chloride
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