When the potassium deficiency is heavy, the chlorosis of the leaf margin becomes brown and dry, and when it is severe, the entire leaf is dry and hung on the branch, and it is not easy to fall off.
Diagnostic points:
Pay attention to the symptomatic leaf position, if the middle leaf and the lower leaf may be potassium deficiency.
The lack of potassium on the sharp edges and green part of the clear, not coking part can still grow normally. Root rot caused scorching of the leaves, and there were obvious red-brown halos between the diseased and healthy parts. Leaf spot caused scorching of the leaf margins. The diseased part was gray and black, and the spots were easy to lift.
Diagnostic index
The leaf potassium content is less than 0.8% to 1.0%. The normal value is 1.0% to 2.0%.
Prone to conditions
?? In the fine sand, acidic soil and organic soil less soil, easy to lack of potassium. Mild potassium-deficient soil application of nitrogen fertilizer, easy to lack of potassium.
?? Sandy soil more lime, easy to lack of potassium.
Insufficient sunshine. The soil is too wet to show potassium deficiency.
Control methods
In autumn, sufficient organic fertilizer is applied to Mushi, and 5000 kg of Mushi is applied each year.
In June, the beginning of the fruit expansion period, topdressing 20 to 25 kg of potassium sulfate or 15 to 20 kg of potassium chloride per mu.
In July-September, the leaves were sprayed 3-4 times with 0.2%-0.3% potassium dihydrogen phosphate aqueous solution, or 1%-2% potassium sulfate or potassium chloride.
VOLSEN is Manufacturers and suppliers of Pharmaceutical raw materials,anti psychotic pharmaceutical chemicals,anti nootropics chemicals,anti coagulants Bulk Drugs, anti hepatitis and anti ulcerative Pharmaceutical Chemicals in China.
Our Major APIs Included Crude Oxiracetam which registered in KDMF, Amisulpride, Levosulpride, Rebamipide, Tenofovir Disoproxil Fumarate, Entecavir Monohydrate Micronized, Indometain, Ambroxol HCL, Bosentan Hydrate, Drospirenone, Sorafenib Tosylate, Tegaserod Maleate, Dolutegravir, Eltrombopag Olamine.Pazopanib HCL,Vilanterol,Dabrafenib,Trametinib,Axitinib,Umeclidinium Bromide, Although our APIs do not have GMP, but all productions are based on GMP environment, strictly according GMP standard.
Active Pharmaceutical Ingredients
Active Pharmaceutical Ingredients, Pharmaceutical Raw Materials, Pharmaceutical Chemicals, Productions APIS, Bulk Drugs
Taizhou Volsen Chemical Co., Ltd. , https://www.volsenchem.com