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Department of Agronomy

Kansas State University

1712 Claflin Rd.

2004 Throckmorton PSC

Manhatan, KS 66506

785-532-6101

agronomy@ksu.edu

Extension Agronomy

Update on GDUs for grain sorghum

As warmer temperatures push eastward, the shortfall in growing degree units (GDUs) for grain sorghum has lessened. Tribune fell only one growing degree unit short of normal for the week. In contrast, Ottawa was short over 60 growing degree units. The majority of this shortfall occurred at the beginning of the week. By the 22nd, all areas were gaining ground. The forecast for the next week is for continued warm weather, which will help. Below is table indicating the accumulated GDUs for this week, compared to the weekly normal:

8/23/2013

 

 

 

 

Weekly GDU Changes

 

Weekly Sorghum GDU

Normal Sorghum GDU

Shortfall

Colby

267

274

-8

Garden City

276

283

-8

Hays

283

296

-13

Hutchinson

272

306

-35

Manhattan

269

289

-21

Ottawa

246

307

-61

Parsons

264

303

-40

Rossville

249

289

-40

St. John

278

300

-23

Scandia

265

292

-28

Silver Lake

257

294

-37

Tribune

270

271

-1

 

Mary Knapp, Agronomy, Weather Data Library
mknapp@ksu.edu