Alfred M. Blackmer http://www.ipm.iastate.edu/ipm/icm/taxonomy/term/283/feed The taxonomy view with a depth of 0. en Test cornfields for nitrate if manure was not incorporated http://www.ipm.iastate.edu/ipm/icm/2002/5-27-2002/testfield.html Incorporate manure into soil to prevent N loss. 2002 Alfred M. Blackmer Brad Van De Woestyne IC-488(10) -- May 27, 2002 Manure Nitrogen Soils Sun, 26 May 2002 14:00:00 -0500 jvandyk 1810 at http://www.ipm.iastate.edu/ipm/icm Test cornfields for nitrate if manure was not incorporated http://www.ipm.iastate.edu/ipm/icm/2002/5-27-2002/testfield.html Incorporate manure into soil to prevent N loss. 2002 Alfred M. Blackmer Brad Van De Woestyne IC-488(10) -- May 27, 2002 Manure Nitrogen Soils Sun, 26 May 2002 14:00:00 -0500 jvandyk 1810 at http://www.ipm.iastate.edu/ipm/icm Field testing T-22™ Planter Box for corn in Iowa http://www.ipm.iastate.edu/ipm/icm/2002/4-15-2002/testt22.html The seed treatment did not affect mean yields. 2002 Alfred M. Blackmer Corn Crop Production IC-488 (5) -- April 15, 2002 Planting Sun, 14 Apr 2002 14:00:00 -0500 jvandyk 1777 at http://www.ipm.iastate.edu/ipm/icm Should fertilizer nitrogen be applied after injected swine manure? http://www.ipm.iastate.edu/ipm/icm/2002/3-18-2002/swinemanure.html Research results are presented. 2002 Alfred M. Blackmer Brad Van De Woestyne IC-488 (3) -- March 18, 2002 Manure Nitrogen Soils Sun, 17 Mar 2002 13:00:00 -0600 jvandyk 1771 at http://www.ipm.iastate.edu/ipm/icm Corn yields at reduced rates of spring nitrogen in 2001 http://www.ipm.iastate.edu/ipm/icm/2002/3-18-2002/reducedn.html Research results are presented. 2002 Alfred M. Blackmer Brad Van De Woestyne IC-488 (3) -- March 18, 2002 Nitrogen Soils Sun, 17 Mar 2002 13:00:00 -0600 jvandyk 1768 at http://www.ipm.iastate.edu/ipm/icm Should fertilizer nitrogen be applied after injected swine manure? http://www.ipm.iastate.edu/ipm/icm/2002/3-18-2002/swinemanure.html Research results are presented. 2002 Alfred M. Blackmer Brad Van De Woestyne IC-488 (3) -- March 18, 2002 Manure Nitrogen Soils Sun, 17 Mar 2002 13:00:00 -0600 jvandyk 1771 at http://www.ipm.iastate.edu/ipm/icm 75/125 N-rate comparison in 2001 http://www.ipm.iastate.edu/ipm/icm/2002/2-18-2002/nrate.html Evidence favors in-season N application over preseason application. 2002 Alfred M. Blackmer Brad Van De Woestyne Crop Production Fertilizer IC-488 (2) -- February 18, 2002 Nitrogen Sun, 17 Feb 2002 13:00:00 -0600 jvandyk 1758 at http://www.ipm.iastate.edu/ipm/icm 75/125 N-rate comparison in 2001 http://www.ipm.iastate.edu/ipm/icm/2002/2-18-2002/nrate.html Evidence favors in-season N application over preseason application. 2002 Alfred M. Blackmer Brad Van De Woestyne Crop Production Fertilizer IC-488 (2) -- February 18, 2002 Nitrogen Sun, 17 Feb 2002 13:00:00 -0600 jvandyk 1758 at http://www.ipm.iastate.edu/ipm/icm Fall nitrification happened http://www.ipm.iastate.edu/ipm/icm/2002/1-21-2002/nitrification.html Fall-applied N converts to nitrate much more rapidly than previously thought. 2002 Alfred M. Blackmer IC-488 (1) -- January 21, 2002 Nitrogen Peter M. Kyveryga Soils Sun, 20 Jan 2002 13:00:00 -0600 jvandyk 1736 at http://www.ipm.iastate.edu/ipm/icm It is not too late to apply nitrogen for 2001 http://www.ipm.iastate.edu/ipm/icm/2001/7-2-2001/nottoolate.html This year may be a chance to experiment. 2001 Alfred M. Blackmer IC-486(16) -- July 2, 2001 Nitrogen Soils Sun, 01 Jul 2001 14:00:00 -0500 jvandyk 1690 at http://www.ipm.iastate.edu/ipm/icm Corn roots are just reaching anhydrous bands http://www.ipm.iastate.edu/ipm/icm/2001/6-25-2001/reachanhy.html Plants do not find bands before finding sidedressed N in wet years. 2001 Alfred M. Blackmer IC-486(15) -- June 25, 2001 Nitrogen Soils Sun, 24 Jun 2001 14:00:00 -0500 jvandyk 1670 at http://www.ipm.iastate.edu/ipm/icm Soil nitrate concentrations are low this year http://www.ipm.iastate.edu/ipm/icm/2001/6-18-2001/soilnitrate.html Help interpreting late-spring nitrate test results. 2001 Alfred M. Blackmer IC-486(14) -- June 18, 2001 Nitrate Soils Sun, 17 Jun 2001 14:00:00 -0500 jvandyk 1663 at http://www.ipm.iastate.edu/ipm/icm Nitrate testing: early versus late spring http://www.ipm.iastate.edu/ipm/icm/2001/2-26-2001/nitratetest.html Your options are explored. 2001 Alfred M. Blackmer IC-486 (2) -- February 26, 2001 Nitrate Soils Sun, 25 Feb 2001 13:00:00 -0600 jvandyk 1581 at http://www.ipm.iastate.edu/ipm/icm Early season losses of nitrogen http://www.ipm.iastate.edu/ipm/icm/2001/2-26-2001/earlyn.html Research results are reported. 2001 Alfred M. Blackmer IC-486 (2) -- February 26, 2001 Nitrogen Soils Sun, 25 Feb 2001 13:00:00 -0600 jvandyk 1579 at http://www.ipm.iastate.edu/ipm/icm Optimal N rates in dry years http://www.ipm.iastate.edu/ipm/icm/2001/1-29-2001/optndry.html Relatively small amounts are needed to maximize profits. 2001 Alfred M. Blackmer IC-486 (1) -- January 29, 2001 Nitrogen Peter M. Kyveryga Soils Sun, 28 Jan 2001 13:00:00 -0600 jvandyk 1552 at http://www.ipm.iastate.edu/ipm/icm Save nitrogen dollars after manure http://www.ipm.iastate.edu/ipm/icm/2001/1-29-2001/savenit.html Research results are reported. 2001 Alfred M. Blackmer Brad Van De Woestyne IC-486 (1) -- January 29, 2001 Nitrogen Soils Sun, 28 Jan 2001 13:00:00 -0600 jvandyk 1553 at http://www.ipm.iastate.edu/ipm/icm Soil pH and losses of fall-applied ammonia http://www.ipm.iastate.edu/ipm/icm/2000/8-21-2000/fallloss.html Soil pH and soil temperature are important. 2000 Alfred M. Blackmer IC-484(21) -- August 21, 2000 Nitrogen Peter M. Kyveryga Soil pH Soil temperature Soils Sun, 20 Aug 2000 14:00:00 -0500 jvandyk 1526 at http://www.ipm.iastate.edu/ipm/icm Soil pH and losses of fall-applied ammonia http://www.ipm.iastate.edu/ipm/icm/2000/8-21-2000/fallloss.html Soil pH and soil temperature are important. 2000 Alfred M. Blackmer IC-484(21) -- August 21, 2000 Nitrogen Peter M. Kyveryga Soil pH Soil temperature Soils Sun, 20 Aug 2000 14:00:00 -0500 jvandyk 1526 at http://www.ipm.iastate.edu/ipm/icm Soil pH and losses of fall-applied ammonia http://www.ipm.iastate.edu/ipm/icm/2000/8-21-2000/fallloss.html Soil pH and soil temperature are important. 2000 Alfred M. Blackmer IC-484(21) -- August 21, 2000 Nitrogen Peter M. Kyveryga Soil pH Soil temperature Soils Sun, 20 Aug 2000 14:00:00 -0500 jvandyk 1526 at http://www.ipm.iastate.edu/ipm/icm Is fall nitrogen profitable? http://www.ipm.iastate.edu/ipm/icm/2000/8-7-2000/falln.html Why fall nitrogen application may be risky. 2000 Alfred M. Blackmer IC-484(20) -- August 7, 2000 Jason W. Ellsworth Nitrogen Soils Sun, 06 Aug 2000 14:00:00 -0500 jvandyk 1534 at http://www.ipm.iastate.edu/ipm/icm Hold nitrogen on manured cornfields in 2000 http://www.ipm.iastate.edu/ipm/icm/2000/2-28-2000/holdnit.html Wait until testing for nitrate in late spring 2000 Alfred M. Blackmer IC-484 (2) -- February 28, 2000 Nitrogen Soils Sun, 27 Feb 2000 13:00:00 -0600 jvandyk 1438 at http://www.ipm.iastate.edu/ipm/icm Monitoring nitrogen deficiencies in corn http://www.ipm.iastate.edu/ipm/icm/1999/5-5-1999/moncorn.html 1999 Alfred M. Blackmer IC-482 (PrecisAg) -- May 5, 1999 Nitrogen Soils Tue, 04 May 1999 14:00:00 -0500 jvandyk 1329 at http://www.ipm.iastate.edu/ipm/icm Rescue fertilization following losses of nitrogen http://www.ipm.iastate.edu/ipm/icm/1999/5-5-1999/rescue.html 1999 Alfred M. Blackmer IC-482 (PrecisAg) -- May 5, 1999 Rescue Fertilization Soils Tue, 04 May 1999 14:00:00 -0500 jvandyk 1332 at http://www.ipm.iastate.edu/ipm/icm Testing cornstalks for N this fall http://www.ipm.iastate.edu/ipm/icm/1998/9-14-1998/testforn98.html 1998 Alfred M. Blackmer Cornstalk Testing Crop Production IC-480(22) -- September 14, 1998 Sun, 13 Sep 1998 14:00:00 -0500 jvandyk 1252 at http://www.ipm.iastate.edu/ipm/icm Sampling fields for nitrate in late spring http://www.ipm.iastate.edu/ipm/icm/1998/4-27-1998/ns98.html 1998 Alfred M. Blackmer IC-480 (7) -- April 27, 1998 Sampling Soils Sun, 26 Apr 1998 14:00:00 -0500 jvandyk 1137 at http://www.ipm.iastate.edu/ipm/icm Test cornstalks for nitrate this fall http://www.ipm.iastate.edu/ipm/icm/1997/9-15-1997/testn.html 1997 Alfred M. Blackmer IC-478(22) -- September 15, 1997 Nitrate Soils Sun, 14 Sep 1997 14:00:00 -0500 jvandyk 1070 at http://www.ipm.iastate.edu/ipm/icm Visually rating nitrogen sufficiency http://www.ipm.iastate.edu/ipm/icm/1997/7-28-1997/visualn.html 1997 Alfred M. Blackmer IC-478(19) -- July 28, 1997 Nitrogen Soils Sun, 27 Jul 1997 14:00:00 -0500 jvandyk 1053 at http://www.ipm.iastate.edu/ipm/icm Why use the ear-leaf test at silking? http://www.ipm.iastate.edu/ipm/icm/1997/7-21-1997/whyear.html 1997 Alfred M. Blackmer IC-478(18) -- July 21, 1997 Nitrogen Soils Sun, 20 Jul 1997 14:00:00 -0500 jvandyk 1049 at http://www.ipm.iastate.edu/ipm/icm Basics of corn tissue testing http://www.ipm.iastate.edu/ipm/icm/1997/7-14-1997/corntiss.html 1997 Alfred M. Blackmer IC-478(17) -- July 14, 1997 Nitrogen Soils Sun, 13 Jul 1997 14:00:00 -0500 jvandyk 1040 at http://www.ipm.iastate.edu/ipm/icm Nitrogen availability from organic fertilizers http://www.ipm.iastate.edu/ipm/icm/1997/6-23-1997/nitfert.html 1997 Alfred M. Blackmer IC-478(14) -- June 23, 1997 Nitrogen Soils Sun, 22 Jun 1997 14:00:00 -0500 jvandyk 1018 at http://www.ipm.iastate.edu/ipm/icm What about N credits following soybean? http://www.ipm.iastate.edu/ipm/icm/1997/6-16-1997/ncredsoyb.html 1997 Alfred M. Blackmer IC-478(13) -- June 16, 1997 Nitrogen Soils Sun, 15 Jun 1997 14:00:00 -0500 jvandyk 1003 at http://www.ipm.iastate.edu/ipm/icm Nitrogen recommendations for addressing weather http://www.ipm.iastate.edu/ipm/icm/1997/6-9-1997/nitrec97.html 1997 Alfred M. Blackmer IC-478(12) -- June 9, 1997 Nitrogen Soils Sun, 08 Jun 1997 14:00:00 -0500 jvandyk 1035 at http://www.ipm.iastate.edu/ipm/icm What about yield goals? http://www.ipm.iastate.edu/ipm/icm/1997/6-2-1997/ygoals.html 1997 Alfred M. Blackmer Crop Production IC-478(11) -- June 2, 1997 Yield Goals Sun, 01 Jun 1997 14:00:00 -0500 jvandyk 1011 at http://www.ipm.iastate.edu/ipm/icm Inconsistencies in results of soil nitrate testing http://www.ipm.iastate.edu/ipm/icm/1997/5-26-1997/nitrateic.html 1997 Alfred M. Blackmer IC-478(10) -- May 26, 1997 Nitrate Soils Sun, 25 May 1997 14:00:00 -0500 jvandyk 990 at http://www.ipm.iastate.edu/ipm/icm Check N levels in manured cornfields this June http://www.ipm.iastate.edu/ipm/icm/1997/5-19-1997/checkn97.html 1997 Alfred M. Blackmer IC-478 (9) -- May 19, 1997 Nitrogen Soils Sun, 18 May 1997 14:00:00 -0500 jvandyk 979 at http://www.ipm.iastate.edu/ipm/icm New nitrogen fertilizer recommendations for corn http://www.ipm.iastate.edu/ipm/icm/1997/5-5-1997/newrec4corn.html 1997 Alfred M. Blackmer Corn Crop Production IC-478 (7) -- May 5, 1997 Sun, 04 May 1997 14:00:00 -0500 jvandyk 997 at http://www.ipm.iastate.edu/ipm/icm