Effect and role of manganese and its management in crop plants under different edaphic condition Yanglem Sofia Devi1,*, Yumnam Julia Sunderi1, Rangappa Krishnappa2, Yanglem Kenedy Singh3 1College of Post Graduate Studies, CAU, Umiam, Ri-Bhoi-793 103 (Meghalaya), India 2Division of Crop Production, ICAR Research Complex NEH Region, Umiam-793103 (Meghalaya), India 3Krishi Vigyan Kendra, Hengbung, Senapati-795 106 (Manipur), India *Corresponding author, e-mail: sofiayanglem@gmail.com
Online published on 8 March, 2018. Abstract Manganese (Mn) is one of important essential micro-nutrient for crop growth and development. Crop plants require Mn in trace quantities but minute changes in the availability leads to development of deficiency of the element which reduce growth and yield. They absorb it as Mn2+ ion through their roots as well as through their foliage. It is primarily required for various physiological functions like photosynthesis, nitrogen metabolism, enzymatic function and various other plants metabolism activities. It is most available in the soil pH of 5.0–6.5 or neutral range. Uptake of Mn2+ ion decreases with soil pH more than 7.5 and significantly affected by high levels of available iron in soils. High concentration of Mn in terms of Mn toxicity is also noticed in crop cultivation but limited to certain crop production systems like vegetables and annual field crops especially under acid soils. Mn toxicity can be reduced by extensive and additional application of magnesium and silicon nutrients. As manganese is an important micro-element for plants and also required to animals and humans, its availability, uptake and overall nutrition is important in agriculture. Top Keywords Manganese (Mn), Physiological Function, Deficiency, Metabolic activity and Mn, toxicity. Top |