* In the plant with one semen (wheat - barley - rice):
The appearance of red or purple color in different areas of the leaf in the vegetative stage.
* In the plant with two layers (tomatoes - cucumber - onions):
- The main veins of the old leaves take a red or purple color while the modern leaves are colored in dark green or gray green.
- The appearance of purple in the absence of phosphorus to the lack of protein representation and therefore the accumulation of high concentrations of sugars leaves necessary to represent the dye of anthocyanin due to the appearance of purple.
- Stems and weak growth and delayed flowering contract.
In general: slow growth, delayed maturation, small fruit size, fall of floral buds and flowers.
The appearance of red or purple color in different areas of the leaf in the vegetative stage.
* In the plant with two layers (tomatoes - cucumber - onions):
- The main veins of the old leaves take a red or purple color while the modern leaves are colored in dark green or gray green.
- The appearance of purple in the absence of phosphorus to the lack of protein representation and therefore the accumulation of high concentrations of sugars leaves necessary to represent the dye of anthocyanin due to the appearance of purple.
- Stems and weak growth and delayed flowering contract.
In general: slow growth, delayed maturation, small fruit size, fall of floral buds and flowers.