Calcium Deficiency Symptoms: Calcium deficiency occurs at the seedling stage, a large number of dark spots appear at the base of the germinal leaves, yellow spots appear at the edges of the blast germs, and the terminal buds are necrotic, and the cotyledons become thick and curled. The leaf margins of the primary leaves shrink, the leaves become cups, and dark spots appear at the tips of the leaves. The lack of calcium within one month before flowering caused blue spots on the edges of the three leaves of the base. The leaves were dark green, and the leaves were densely integrated with wrinkles, and the woody parts of the stems were softened. In the crusting stage, calcium deficiency, yellow-green leaves, and with red or lavender, capsule dark green or brown-green, with markings, leaves off delay. Calcium-deficient plants are weak and susceptible to disease. Second, the cause of calcium deficiency in the acidic, sandy and lack of organic fertilizer soil prone to calcium deficiency. III. Remedy Lime is applied to calcium-deficient acid soils, and gypsum is applied to yellow-calcareous alluvial soils, which has a significant effect on yield increase. Calcium fertilizer can be used as base fertilizer, but it can also be applied at the early flowering stage. Alkaline lime should be used on acidic soils, usually 15-25 kg per mu. In saline-alkali soil and calcareous soil, it is appropriate to use physiological alkaline fertilizer gypsum, generally 20-30 kg per mu.
Carbomer is an acrylic resin obtained by cross-linking pentaerythritol with acrylic acid. It is a very important rheological regulator. After neutralization, carbomer is an excellent gel matrix, which has important applications such as thickening suspension. According to the dry product calculation, including carboxylic acid group (-cooh) should be 56.0 % ~ 68.0%.
Common carbopol series include: Carbopol 940, 941, 934, 1342, 980, ETD 2020, AQUA sf-1, Ultrez 21, Ultrez 20, etc.
Carbomer,Carbopol,Carbopol 940, Carbomer 940, Carbomer 980, acrylic acid Xi'an Gawen Biotechnology Co., Ltd , https://www.ahualynbio.com
Remedy for calcium deficiency in soybeans