The yellow shoots of the new shoots growing late in the late period appear to be iron-deficient. The main reason is that the soil is highly alkaline, and iron in the soil cannot be absorbed by the roots. Control methods: 1, spray iron fertilizer. Iron fertilizer is mainly ferrous sulfate. Before spraying, the concentration is about 1%. Spraying at the growth stage, the concentration is 0.30%-0.50%, and when the symptoms are serious, it can be sprayed several times. 2, buried bottle method. Early spring bottle best effect. When the tree has just sprouted, the ferrous sulfate solution with a concentration of 0.10%-0.30% is put in a washed bottle for use. Roots were excavated at 1 meter from the trunk, roots with a diameter of 5 mm were selected, and the roots were cut and inserted into a bottle containing a ferrous sulfate solution, which was then buried well with soil. Buried 4-6 bottles can be. 3, increase organic fertilizer. The humic colloids produced during the decomposition of organic matter can activate and adsorb available iron ions in the soil for absorption and utilization by the tree body. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone Mulch Films are a revolution in the agriculture industry as it presents an economical and environment friendly protective solution for crops and soil. It not only maintains the quality of soil but also aids in the faster growth of plants. By reflecting light, it ensures control on growth of weeds as photosynthesis process will not be carried out. Mulch Film,Sliver Black Mulching Film Sheet,Mulch Film For Greenhouse,Polyethylene Mulch Film JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.skyplantgreenhouse.com