When Is the Best Time to Spray Boron and Molybdenum Fertilizer on Peanuts?
Peanuts need various fertilizers during the growing process, so when should you spray boron and molybdenum fertilizer on peanuts? Let's take a look!
1. When should you spray boron and molybdenum fertilizer on peanuts?
Peanuts need boron and molybdenum fertilizer during the flowering and pegging stage, because when peanuts are flowering and pegging, a soil deficiency in boron and molybdenum can easily lead to poor root nodule development, fewer pods, and empty shells, and the kernels are also prone to being underfilled. If a peanut crop shows severe cases of fewer pods and empty shells, boron and molybdenum fertilizer can be applied before sowing.
The symptoms of molybdenum deficiency in peanuts are stunted plants and yellow-green leaves or interveinal chlorosis; the symptoms of boron deficiency are short main stems and lateral branches, leaves at the stem tips falling off easily, scorched and necrotic growing points, and a stunted, “clustered” appearance. There are obvious cracks on the stems and root crowns, new leaves are small and crinkled, old leaves are yellow, withered, thick and brittle, and the petioles droop. The root system is poorly developed, with few fibrous roots and many short roots, and the root tips have necrotic spots. The flowering period is long, with few flowers.
2. Specific Methods for Spraying Boron and Molybdenum Fertilizer on Peanuts
1. The application rate of boron and molybdenum fertilizer for peanuts is 300-500 grams per mu;
2. Use 15 grams of ammonium molybdate to treat the seed according to the sowing rate per mu of peanuts. The seed treatment method is: mix the Dantong + Banshi kit with 200 milliliters of water to treat 25-30 jin of seed, stir thoroughly and evenly, and sow after drying in the air.
3. Foliar spraying. Use 20 milliliters of Dantong per bucket of water for foliar spraying, 2 buckets of water per mu, and the effect is better when sprayed once each at the seedling stage and the flowering-pegging stage.
After molybdenum is applied to peanuts, it can significantly enhance the activity and nitrogen fixation of rhizobia, promote protein synthesis, and promote flowering, fertilization and full pods in the crop, with considerable yield-increasing potential. Especially for molybdenum-deficient sandy soil, the effect of applying molybdenum fertilizer is even more obvious.
Boron has the effect of strengthening conductive tissues. Boron can improve the nitrogen fixation of peanut rhizobia and increase the drought resistance of peanuts. In the reproductive body of peanuts, the part with the highest boron content is the flower, especially the stigma and ovary. Boron can stimulate peanut pollen germination and pollen tube elongation, which is beneficial to fertilization.