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Published on: 1/1/2008
Last Visited: 7/15/2008
"We are still in a drought situation, but no one is running out of water at this point," says Glen Ritchie, University of Georgia cotton physiologist.
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Ritchie agrees that producers face a real challenge to provide what the crop needs and making it pay in the end.
"Producers tend to be pretty efficient with irrigation," he says."If anything, they may tend to underwater a little bit, or they may wait a little long to put the water on.It really is a matter of finding a good balance."
Ritchie says it is obvious the areas where producers planted into a little moisture, but then it turned off dry.
"We are seeing skips in fields, and some areas are really hit and miss,"he says.
Ritchie adds that skips in the field reduce yields, but they also can reduce quality.
"We have found that quality is loosely tied to plant density," he says."You don't usually see quality issues until you see a field that has a lot of skips."
Quality Dependent On Moisture
According to Ritchie, these things are dependent on plant density, which goes back to emergence and needing moisture to emerge uniformly.
But he, like many others, knows that cotton is good at compensating for a few skips.
"In the past, when we have had significant rain in August and September, the crop has recovered," Ritchie says.
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In the meantime, Ritchie and a team of researchers are pursuing studies with the goal of improving water management and efficiency.Some of those study areas are as follows:
, Relationship between cotton and water.These are studies aimed at increasing the understanding of plant water use, irrigation timing and irrigation efficiency."Essentially, getting at precisely how much water the crop needs and when it needs it," Ritchie says.
, Subsurface irrigation.
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"We are also looking closely at varieties, and, specifically, we are looking at ones that will do better when we are limited on water," Ritchie says.
, Interaction between plant growth regulator and water management by the crop."We are looking at relationships between plant growth regulator (PGR) applications and water," Ritchie says.