TAVA

Mechanism of Action and Agronomic Efficiency

The growth regulator "Tava" from the Chinese manufacturer "Hangzhou Ruijiang Chemical Co., Ltd." is based on the active ingredient ethephon. In crop production, ethephon is classified as an ethylene producer. Upon contact with the leaves and stems of winter wheat or barley, the preparation penetrates the tissues and decomposes, releasing ethylene—a natural phytohormone that accelerates maturation processes and alters the plant's hormonal balance.

Technical Breakdown of the Preparation

• Shortening of Internodes: Under the influence of ethylene, the longitudinal elongation of cells in the lower internodes of the straw is slowed. This leads to thickening and increased mechanical strength of the stem.
• Anti-Lodging Effect: The physical restructuring of the stem architecture is critical for winter crops during periods of intensive growth. "Tava" lowers the plant's center of gravity, minimizing the risk of lodging during strong winds or heavy rainfall.
• Synthesis Control: Unlike gibberellin inhibitors, ethephon acts more aggressively, requiring precise adherence to the crop growth stages (typically from the onset of jointing until the flag leaf stage).

Application and Safety

The product is supplied as an aqueous solution, ensuring rapid homogenization in the tank mix and uniform coverage of the leaf surface during spraying. A hazard class of 3 implies moderate toxicity, necessitating standard safety precautions for operators when handling chemicals. The high concentration of the active ingredient allows for efficient use of the preparation even at moderate application rates, ensuring stable results on intensive farming backgrounds where excessive nitrogen fertilizer use triggers vigorous vegetative growth.