SX-4

Engineering the Determinant Growth of SH-4

The breeding efforts of the Cherkasy IAPV UAAN in developing the "SH-4" tomato variety were focused on achieving a precise balance between controlled growth and physiological productivity. At the core of this tomato's biological model is its determinant growth pattern, which dictates its field performance. Unlike indeterminate forms, the growth point of SH-4 naturally terminates in an inflorescence, which eliminates excessive vegetative overgrowth and redirects the flow of assimilates directly into fruit production.

Technical Specifications of the Seed Material

The realization of the variety's potential depends directly on the seed quality. Using original material from a Ukrainian breeding center ensures high germination energy and seedling uniformity. This is a critical parameter for field production, where the synchronization of emergence determines the consistency of phenological stages across the entire crop.

• Plant Architecture: The compact habit allows for optimized planting density, reducing labor requirements for pruning and ensuring effective aeration of the fruit-bearing canopy.
• Developmental Physiology: The determinant growth type minimizes risks associated with late-season yield setting, which is particularly vital given the variability of the Ukrainian climate.
• Production Value: The stability of SH-4 characteristics makes it a predictable asset for agronomists focused on reliable yields with moderate input costs.

This variety represents a selection outcome adapted to local conditions, prioritizing agronomic reliability over marketing claims. The reduced need for complex trellising and suckering systems makes it a rational choice for operations aiming to optimize operational expenditure.