Boron is one of the minor elements of the plant. It is found in small quantities in the soil and the large quantities of it cause plant poisoning. Calcium increases are the main causes of boron deficiency, as well as high water level and poor ventilation. Boron is absorbed in the form of BOOR2 and is a non-moving element within the plant.
Functions of boron in plant:
- The water content within the plant also controls the absorption of water from the soil.
- Is related to the transfer of sugars to storage places.
- Important for in vitro fertilization.
- It affects the absorption of certain elements such as nitrogen, potassium and calcium.
- Essential for the formation of hormones in the plant.
- Plays an important role in the process of forming proteins in the plant.
- Necessary to form some amino acids.
Symptoms of boron deficiency:
- Growth in general is late and abnormal.
- The modern leaves are distorted, curled, rounded edges and usually thicker and darker blue.
- At severe injury, the buds and developing sores die and weaken root growth.
Quantity and sources of boron in the soil:
Boron is present in the soil in small quantities ranging from 7 - 80 ppm. One of the most important primary minerals containing this element are hydrate, anhydrous and boron silicate.
Boron fertilizers:
- Calcium borate.
- Magnesium borate.
- Borax (sodium borate).