Onions
High-Uniformity Irrigation for Consistent, Market-Grade Onions
Onions are one of the most water-sensitive crops in commercial agriculture. With a very shallow and sparse root system—mostly concentrated in the top 25-30 cm of soil—onions have a limited ability to extract moisture from deep reserves. To achieve large, uniform diameters and firm bulbs with high-quality skins, the soil must be kept at a precise moisture tension. H.T-BAUER provides the advanced technology needed to manage these tight tolerances, ensuring your crop reaches peak market value.
High-Frequency, Shallow-Zone Management
Because onion roots are shallow, they require frequent, light irrigation applications to stay hydrated without leaching nutrients. H.T-BAUER systems are engineered for high-frequency scheduling, keeping the critical “bulb zone” consistently moist to support steady growth throughout the season.
Prevention of Bulb Splitting and Double Hearts
Fluctuations in soil moisture (alternating between dry and wet) are the primary cause of bulb splitting and the formation of undesirable “double hearts.” Our Remote Control System allows for stable, automated irrigation cycles that eliminate moisture spikes, resulting in single-centered, perfectly shaped bulbs.
Critical Moisture During Bulbing
The most vital period for irrigation is the bulbing stage. Any water stress during this phase will immediately stop expansion and can lead to premature dormancy or small bulbs. H.T-BAUER technology ensures 100% distribution uniformity, so every onion in the field receives the exact amount of water needed for maximum expansion.
"Curing" and Disease Prevention
As onions reach maturity, irrigation must be carefully tapered off to allow the “necks” to dry and the outer skins to cure properly. Excessive late-season water can cause neck rot or fungal issues. Our precision controllers allow for a gradual reduction in water, ensuring the bulbs enter the harvest and storage phases in peak condition.
Related guide
Layer Development: Maintaining Precise Soil Tension for Large, Firm Onion Bulbs
Precise soil tension management during bulb scaling determines whether your onions develop firm, uniform layers—or a hidden defect that ruins...
Do you want to achieve better bulb uniformity and increase your pack-out rate?
From germination to final curing, H.T-BAUER is your partner in professional onion irrigation. Contact our specialists today to design a solution that fits your specific soil and climate.