What is the best time to apply topdressing to crops?
When is the effect of topdressing on crops good? Please give an introduction. The following introduces some of the best topdressing periods for crops: The best topdressing period for corn is under the principle of balanced fertilization. From after jointing to the large trumpet stage, corn is at its peak period of nutrient uptake, so the first topdressing can generally be applied around jointing. Apply 10 kg of urea per mu...
When is the effect of topdressing on crops good? Please give an introduction.
The following introduces some of the best topdressing periods for crops:
Best topdressing period for corn: Under the principle of balanced fertilization, from after jointing to the large trumpet stage, corn is at its peak period of nutrient uptake, so the first topdressing can generally be applied around jointing. Apply 10 kg of urea per mu; 7-10 days before tasseling, a second topdressing should be applied, and another 20 kg of urea per mu can be applied. If the base fertilizer and seed fertilizer are relatively sufficient and the soil is also very fertile, a single concentrated topdressing can be applied, combined with the second weeding for deep fertilization.
Best topdressing period for rice: Rice's absorption of nitrogen fertilizer gradually increases after green-up, so to promote early tillering and early tillering of rice, tillering fertilizer should be applied early and heavily. Generally, 7-10 days after transplanting, apply 10 kg of urea per mu, and at heading, apply another 15-20 kg of urea.
Best topdressing period for sorghum: To meet the nutrient needs of sorghum from jointing to heading, the first topdressing should be applied at jointing, with 8-12 kg of urea per mu; at the booting and flag-leaf stage, apply a second topdressing with 10 kg of urea per mu.
Best topdressing period for peanuts: The critical nutrient period for peanuts is in the early growth stage. About 15 days after emergence, flower buds begin to differentiate in large numbers and root nodules begin to form. When the plant shows two pairs of lateral branches, a nitrogen fertilizer topdressing should be applied in time, with 5-10 kg of urea per mu. After peanuts flower, combined with earthing up, spraying multi-element micronutrient fertilizer helps reduce the rate of empty pods and increase peanut yield.
Best topdressing period for soybeans: Soybeans are a crop with a relatively high nitrogen requirement, but their rhizobia can fix nitrogen and thus provide part of the nitrogen source. However, topdressing should still be applied in stages during the growth period. Usually, a nitrogen fertilizer topdressing is applied once at the early flowering stage of soybeans, generally 8-12 kg of urea per mu. At the pod-setting stage of soybeans, spraying a multi-element micronutrient fertilizer once on the leaves makes the yield-increasing effect even more obvious.
Click to get more compound fertilizer application techniques
Click to get more fertilizer application techniques