Micronutrient Status Of Vertisols And Cambisols In Two Agro - Ecological Zones Of Tigray Northern Ethiopia.

Surface soil samples of Vertisols and Cambisols of 0-20 cm depth and leafrnsamples of barely at 50%jlowering stage grown on surface soils of Vertisols andrnCambisols were collected from Adigudom and Dogua Tembien soil catenas tornstudy the micronutrient cations (Fe, Mn, Zn and Cu). DTFA at pH 7.3 was usedrnfor determination of the micronubients. In the extracts, micronutrients wererndetermined with atomic absorption spectro photometer. The soil analysisrnrevealed that Fe, Mn and Cu were at sufficient range but Zn was deficient. Thernrelatively higher concentrations of Co, Mg, sand fraction, and pH are some of thernfactors contribUting to Zn deficiency. Moreover, removal of surface soil by erosionrnand poor land management practices enhance Zn deficiency in both study sites.rnThe leaf analysis indicated that of the micronutrients (Fe, Mn and Zn), Cu was atrndeficient level. Soil pH and silt fraction had negative correlation with Cu. On thernother hand linear regression analysis indicated that there was 94% dependencyrnof plant Cu on soil Cu.

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