Under Control - 2019 - 12

Increasing Yields of
Baby Leaf Vegetables
Researchers at Cornell University are studying how light quantity impacts baby leaf
vegetable production. Read on to learn the results of their latest study.
By Charles Gagne and Neil Mattson
It only takes a few minutes walking through the produce
section of your local grocery store to notice the growing
popularity of baby leaf vegetables. New baby leaf salad mix
products are popping up in droves on produce aisles all across
the U.S. These products often contain a mix of six to eight baby
leaf vegetables that are selected for their flavor, nutrition, and
aesthetic qualities.
While the definition of baby leaf vegetables varies, these
crops are best defined as vegetables harvested after the
development of true leaves, but before the eight true-leaf stage.
Harvesting the crops at this stage is gaining popularity due to
good leaf size, color and texture, as well as thicker leaves which
allows for a longer shelf life.
The rise of baby leaf salad mixes has been closely linked
with the increased production of baby leaf vegetables indoors
in greenhouses and plant factories using hydroponic,
aquaponic and aeroponic technologies. Light, water, plant
nutrition, air and root temperatures, humidity and carbon
dioxide can all be controlled in indoor production to
optimize growth and allow growers to produce year-round
12
Figure 1. From left to right, baby leaf collards, lettuce, mizuna and pac
choi 12 days after germination under daily light integral of 6, 12, 18, 24
and 30 mol·m-2
d-1
(from top to bottom).
UNDER CONTROL: TIPS FOR CONTROLLED ENVIRONMENT GROWING * 2019

Under Control - 2019

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