Countermeasures for yellowing of grape leaves
Element deficient etiolation
Iron deficiency yellowing can be prevented by whole plant spraying with 0.1% ferrous sulfate, 0.2% urea and 3 taels of aged vinegar (each sprayer).
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The grape leaves are yellowing. What's going on?
Drug damage if the whole rapid leaves turn yellow, the possibility of drug damage is greater. If root and leaf diseases are several leaves and some leaves are yellowing, and there is a process of development, then root diseases and leaf diseases are more likely. If there is a lack of trace elements, the leaves are only yellowing between the veins.
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How to raise the tiger flowers?
The cultivation substrate of Huyanhua in soil is the slightly acidic soil with loose fertility, rich organic matter, good air permeability, strong ability of water and fertilizer conservation but no stagnant water. generally, rotten leaf soil, peat soil and coarse sand were prepared at 2:1:1 and mature cow manure or chicken manure was used as base fertilizer. Temperature Huyan flower likes to grow at high temperature
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