Navigation Links
Iron deficiency in soil threatens soybean production
Date:12/6/2010

Madison, WI December 6 2010 -- An expansion of soybean production into areas where soybean has seldom, if ever, been grown can be problematic for some farmers. Soils having high pH values and large amounts of calcium and/or magnesium carbonate are notoriously iron deficient. Iron deficient soils in the North Central United States are estimated to reduce soy bean production by 12.5 million bushels every year.

John Wiersma, a researcher at the University of Minnesota Northwest Research and Outreach Center at Crookston, concluded a study examining the effect of nitrogen based fertilizers on soybean crops grown in iron deficient soil. Because soybeans require more nitrogen than most commercial crops, Wiersma hypothesized that adding nitrogen fertilizer could help increase yields in nutrient poor soil.

Several soybean varieties along with nitrogen fertilizer were tested from 2003-2005 on soils where soybean has historically exhibited mild to severe iron deficiency. Seed was inoculated at twice the recommended rate, and the amount of extractable iron in soils of the experimental areas was measured each year. Growing season temperature and rain also were recorded each year and compared with each other and with the 30-year average for Crookston.

According to Wiersma's study, plant height, seed number, and grain yield all decreased linearly in response to increasing nitrogen rates for iron inefficient varieties, whereas these responses in iron efficient and moderately efficient varieties changed little as nitrogen rates increased.

"Additional nitrogen definitely should not be applied when iron-inefficient varieties are grown on chlorosis-prone (iron deficient) soils, and there is little support for adding nitrogen to iron efficient or moderately efficient varieties," states Wiersma.

Research is ongoing at Crookston to compare the accuracy and consistency of different measures of iron deficiency in soybean crops. Wiersma's study can be found in the 2010 November/December issue of Agronomy Journal.


'/>"/>

Contact: Sara Uttech
suttech@sciencesocieties.org
608-268-4948
American Society of Agronomy
Source:Eurekalert

Related medicine news :

1. Testosterone deficiency affects male cancer survivors quality of life
2. Testicular Cancer Survivors May Have Hormone Deficiency
3. Vitamin D deficiency in pregnant Arab women requires urgent attention
4. Common Diabetes Drug Linked to Vitamin B-12 Deficiency
5. Vitamin D deficiency confirmed as common across a range of rheumatic conditions
6. Vitamin D Deficiency Linked to Diabetes, Metabolic Syndrome in Studies
7. Vitamin D deficiency linked to arterial stiffness in black teens
8. Using cassava to address vitamin A deficiency
9. Vitamin D deficiency linked to lung transplant rejection
10. Hearing Loss in Elderly May Be Linked to Folate Deficiency
11. Proposed Medicaid Cuts Threatens Health Care Access for 400,000 Maryland Children
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... June 25, 2016 , ... Austin residents seeking Mohs surgery services, can ... Surgery and to Dr. Russell Peckham for medical and surgical dermatology. , Dr. Dorsey ... cancer. The selective fellowship in Mohs Micrographic Surgery completed by Dr. Dorsey was under ...
(Date:6/25/2016)... ... 2016 , ... As a lifelong Southern Californian, Dr. Omkar Marathe earned his ... David Geffen School of Medicine at UCLA. He trained in Internal Medicine at Scripps ... in hematology/oncology at the UCLA-Olive View-Cedars Sinai program where he had the opportunity to ...
(Date:6/24/2016)... ... June 24, 2016 , ... A recent article ... people are unfamiliar with. The article goes on to state that individuals are now ... of these less common operations such as calf and cheek reduction. The Los Angeles ...
(Date:6/24/2016)... ... June 24, 2016 , ... ... Scientific Sessions in Dallas that it will receive two significant new grants to ... came as PHA marked its 25th anniversary by recognizing patients, medical professionals and ...
(Date:6/24/2016)... ... ... Topical BioMedics, Inc, makers of Topricin and MyPainAway Pain Relief Products, join The ‘Business for ... $12 an hour by 2020 and then adjusting it yearly to increase at the same ... wage, assure the wage floor does not erode again, and make future increases more predictable. ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016 , ... on Thursday, July 7, 2016 , , , , LOCATION: ... , , , , EXPERT PANELISTS:  , , , ... Senior Industry Analyst, Christi Bird; Senior Industry Analyst, Divyaa Ravishankar and ... The global pharmaceutical industry is witnessing an exceptional era. ...
(Date:6/23/2016)... NORTHBROOK, Ill. and BOGOTA, Colombia , June 23, 2016  Astellas today announced the ... joins Astellas Farma Brasil as the company,s second affiliate in Latin America . ... ... appointed General Manager of Astellas Farma Colombia ... ...
(Date:6/23/2016)... June 23, 2016  Guerbet announced today that it ... Supplier Horizon Award . One of 12 ... recognized for its support of Premier members through exceptional ... excellence, and commitment to lower costs. ... recognition of our outstanding customer service from Premier," says ...
Breaking Medicine Technology: