"Fertilizer" compounding to do more with less
With the increasing number of pesticides and chemical fertilizers, the combination of the two is very common. Mixed use of scientific and rational, can play a role in saving labor, improve work efficiency, fertilizer efficiency and efficacy, but if the wrong mix, not only reduce the effect, and even cause unexpected harm.
Pesticides and pesticides mixed
â—Under alkaline conditions, dithiocarbamate fungicides such as carbamates, pyrethroid vinegar insecticides, thiram, and sorban ring are susceptible to hydrolysis or complex chemical changes, thereby destroying the original structure. Under acidic conditions, the 2,4-D sodium salt, 2A 4-chlorosodium salt, amitraz, etc. will decompose, thereby reducing the efficacy.
â— Organic sulfur and organic phosphorus pesticides cannot be mixed with pesticides containing copper preparations. For example, dithiocarbamate fungicides and 2,4-D salts herbicides are mixed with copper agents and lose their activity due to their complexation with copper ions.
• Microbial source insecticides and systemic organophosphate insecticides cannot be mixed with fungicides.
â— The use of emulsifiable concentrates or wettable powders does not require delamination, oil slicks or sedimentation.
â— The chemical composition of the active ingredients in the mixture may produce phytotoxicity. For example, the use of lime sulfur mixed with Bordeaux mixture can produce harmful copper sulfide and increase the content of soluble copper ions; propanil, butachlor, etc. cannot be combined with organophosphorus, amino groups. Formic acid pesticides are mixed.
â— Insecticides and fungicides are mixed and mixed in the form of acaricidal pine, plus different rice bran, dimethomorph carbendazim, methamidophos different rice bran, etc. Most of them are currently used. Less variety of regulators are used. Such as the use of mixed BC and chlormequat, gibberellin mixed with naphthalene acetate and so on.
Fertilizer and Fertilizer Blend
Superphosphate can not be mixed with alkaline fertilizers such as grass ash, lime nitrogen, and lime, otherwise it will reduce the effectiveness of phosphorus; insoluble phosphate fertilizers such as phosphate rock meal and bone meal can not be mixed with alkali fertilizers such as grass ash, lime nitrogen, and lime; otherwise As the organic acids in the soil are neutralized, insoluble phosphate fertilizers are more difficult to dissolve and crops cannot absorb and utilize.
Alkaline fertilizer such as calcium magnesium phosphate fertilizer can not be mixed with ammonium nitrogen fertilizer, which will increase ammonia volatilization and reduce fertilizer efficiency.
Chemical fertilizers cannot be mixed with bacterial fertilizers because they are highly absorbent, corrosive, and volatile. If they are mixed with bacterial microbes such as rhizobia, they will kill or inhibit viable bacteria and make bacterial fertilizers useless.
Uncooked farmyard fertilizers cannot be mixed with ammonium nitrate. If mixed with ammonium nitrate, the unripe farmyard manure is damaged during decomposition and rot, reducing fertilizer efficiency.
Pesticide and fertilizer mix
To identify whether plant growth regulators can be mixed with other pesticides and chemical fertilizers, the simplest method is to combine the agricultural plant growth regulators with pesticides or fertilizers into the same container and mix them, and make a solution if there is no oil floating and flocculation. , Precipitation or discoloration, heat generation, bubble generation, etc., can be mixed.
Pesticide and fertilizer mixing rules
Without destroying the physical properties, the original physical properties are retained after mixing, and no phenomena such as emulsification, reduction of suspension rate, stratification, flocculation, precipitation, and precipitation of effective components are observed.
No adverse chemical reaction occurs No undesirable chemical reactions such as acid-base neutralization, precipitation, hydrolysis, alkaline hydrolysis, acid hydrolysis, salting-out, or redox reaction occur between the mixtures.
No increase in toxicity and residual activity After pesticides are mixed, no toxicity is required to ensure safety for humans and animals. The combination of moderately toxic pesticides with low- or low-residue pesticides can reduce toxicity or residues and reduce pesticide residues in fruit.
The method of application is as consistent as possible. The components in the mixture are relatively uniform in terms of time of action, application site and object of use, and can fully exert their respective effects.
The first trial and then the first promotion in a small range of tests, in order to prove no adverse effects can be mixed.
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