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:6/27/2016)... ... June 27, 2016 , ... TherapySites, ... its affiliation with Tennessee Counseling Association. This new relationship allows TherapySites ... Tennessee Counseling Association, adding exclusive benefits and promotional offers. , "TCA is extremely ...
(Date:6/26/2016)... ... June 27, 2016 , ... Quality metrics are proliferating ... many ways they remain in the eye of the beholder, according to experts who ... of The American Journal of Managed Care. For the full issue, click here ...
(Date:6/26/2016)... ... 26, 2016 , ... Brent Kasmer, a legally blind and certified personal trainer is helping to ... app. The fitness app plans to fix the two major problems leading the fitness industry ... fits all type program , They don’t eliminate all the reasons people quit ...
(Date:6/25/2016)... ... ... of Bruton Memorial Library on June 21 due to a possible lice infestation, as reported ... head lice: the parasite’s ability to live away from a human host, and to infest ... in the event that lice have simply gotten out of control. , As lice are ...
(Date:6/25/2016)... City, Oklahoma (PRWEB) , ... June 25, 2016 ... ... helping both athletes and non-athletes recover from injury. Recently, he has implemented orthobiologic ... the Oklahoma City area —Johnson is one of the first doctors to perform ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... 2016 According to a new ... Pen Needles, Safety Pen Needles), Needle Length (4mm, 5mm, ... Mode of Purchase (Retail, Non-Retail) - Trends & Global ... the market for the forecast period of 2016 to ... Billion by 2021 from USD 1.65 Billion in 2016, ...
(Date:6/23/2016)... June 23, 2016  MedSource announced today that ... e-clinical software solution of choice.  This latest decision ... value to their clients by offering a state-of-the-art ... relationship establishes nowEDC as the EDC platform of ... full-service clients.  "nowEDC has long been a preferred ...
(Date:6/23/2016)... Ill. , June 23, 2016  In a startling report ... are failing their residents by lacking a comprehensive, proven plan to ... a definitive ranking of how states are tackling the worst ... to only four states – Kentucky , ... Vermont . Of the 28 failing states, three ...
Breaking Medicine Technology: