What kind of micro-fertilizer can be applied to peanuts?

What micronutrients can be applied to peanuts? Trace elements play an irreplaceable role in the growth and development of peanuts, such as nitrogen, phosphorus, potassium, etc. Scientific application of trace element fertilizer is an important measure for high quality and high yield of peanuts. Iron fertilizer peanuts need to absorb 264 grams of iron for each ton of dry matter they form. Under iron deficiency, the plants were short, branches were few, flowering was late, flower quantity was few, nodules were few, root development was poor. Severe, vein chlorosis, yellowing, upper leaves were yellow-white, long leaves appear brown necrotic spots, until the leaves die. Applying iron fertilizer to iron-deficient soil can generally increase peanut yield by more than 10%. Application method: ① As base fertilizer, when preparing soil, apply 200~ 400g ferrous sulfate per mu (mixed with organic fertilizer or calcium superphosphate);② As seed fertilizer, soak seeds with 0.1% ferrous sulfate solution for 24 hours before sowing, take out and dry seed coat for sowing;③ Spraying outside roots, spraying 0.2% ferrous sulfate solution on leaves at flowering needle stage, pod setting stage or when new leaves appear yellowing symptoms, generally spraying once every 5~6 days, continuously spraying 2~3 times. For every ton of dry matter formed by boron fertilizer peanuts, 44 grams of boron need to be absorbed. When boron is deficient, the plant is short, branched and clustered, the color of the vein of the heart leaf is light, and the rest is dark and light green; the plant has few flowers or even no flowers, the root is easy to age, the ability to expand branches is weak, the fibrous root is few, the root tip has black spots, easy to necrosis, the kernel is bad; it is easy to form hollow fruits with shells and no kernels. Boron fertilizer could increase peanut yield by 7.8%~22.5% in boron-deficient soil. Application method: ① As base fertilizer, boric acid or borax 0.2~ 1 kg per mu (mixed with organic fertilizer or nitrogen and phosphorus fertilizer);(2) as seed fertilizer, soaking peanut seeds with boric acid or borax solution of 0.02%~0.05% for 4~6 hours before sowing, or mixing boric acid or borax with 0.4 kg per kg of peanut seeds;(3) as topdressing, mixing boric acid or borax 50~100 g per mu with a small amount of decomposed organic fertilizer and dressing before flowering;(4) Spraying outside the root, spraying 0.2% boric acid or borax solution on the leaves of peanut seedlings, initial flowering and full flowering. Manganese fertilizer Peanuts need to absorb 39 grams of manganese for each ton of dry matter formed. Under Mn deficiency, the interveinal part of leaves yellowed, while the veins tended to remain green. Manganese fertilizer could increase peanut yield by 8%~11% in manganese-deficient soil. Application method: ① As base fertilizer, apply manganese sulfate 1.5~3.0 kg per mu during soil preparation;② As seed fertilizer, soak seeds with 0.05~0.1% manganese sulfate solution for 12~24 hours before sowing;③ Spray outside roots, spray with 0.1% manganese sulfate solution every 10~14 days from 30~50 days after sowing to 15~20 days before harvest; If necessary, mix with fungicide for preventing and controlling peanut leaf spot. Zinc fertilizer Peanuts need to absorb 9 grams of zinc per ton of dry matter. When zinc deficiency occurs, the leaf strips chlorosis occurs. The strips are usually on the leaves closest to the petioles. When zinc deficiency occurs, the whole leaf chlorosis occurs. Applying zinc fertilizer to zinc-deficient soil could increase peanut yield by 12.5%~13.2%. Application method: ① As base fertilizer, apply 1 kg zinc sulfate per mu during soil preparation;② As seed fertilizer, soak seeds with 0.1~0.5% zinc sulfate solution for 12 hours before sowing, take out and dry seed coat for sowing. Molybdenum fertilizer peanuts need to absorb 1.32 grams of molybdenum per ton of dry matter. When molybdenum is deficient, crops usually show typical nitrogen deficiency symptoms; according to foreign studies, even in the case of complete molybdenum absence, peanuts can continue to blossom and bear fruit, but growth is inhibited. Applying molybdenum fertilizer to Mo deficient soil can increase peanut yield by 11.93%. Application method: ① As base fertilizer, 50~ 100g ammonium molybdate (mixed with calcium superphosphate) shall be applied per mu during soil preparation;② As seed fertilizer, soak seeds with 0.1~0.2% ammonium molybdate solution for 3~5 hours before sowing, or dress seeds with ammonium molybdate according to 0.2~0.3% of seed quantity;③ Spraying outside roots, spraying leaves with 0.1~0.2% ammonium molybdate solution during seedling stage and flowering stage of peanut. Click for more peanut planting technology Click for more grain and oil crop planting technology