Sunflower
respect. Corn, wheat, rye and sorghum are rated medium, and sugarbeet and barley are
high in salt tolerance.
Good soil drainage is required for sunflower production, but this crop does not differ
substantially from other field crops in flooding tolerance.
V. Cultural Practices:
A. Seedbed Preparation:
Many different tillage systems can be used effectively for sunflower production.
Conventional systems of seedbed preparation consist of moldboard plowing or chisel
plowing to invert residue and several secondary field operations. Conventional systems
have been shown to increase the availability and improve the distribution of potassium
and nitrogen and to increase the seed zone temperatures. However, the risk of erosion and
expense of the several tillage operations has led to greater interest in minimum or ridge
tillage systems.
Both germination percentage and lodging have been shown to increase in ridge-till
systems vs. level plantings
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