Estimation of essential macro-nutrients in sixteen barley cultivars (hordeum vulgare l.) and its soil, grown at wheat research station Tandojam, Sindh

A study was conducted to evaluate the concentration of macro nutrients accumulation in soil and barley cultivars grown at wheat Research Station Tandojam, using flame atomic absorption spectrophotometer. The samples of different varieties of barely as well as soil samples of agricultural plot where all these varieties of barely were grown, They all are treated with nitric acid and hydrogen peroxide followed by dissolution in deionized water. The great range of each elements were observed in (mg/kg). The sodium, potassium, calcium and magnesium determined in barley cultivars were found to be in the range of 892.86-2312.45 (Na), 4718.89-9514.51(K), 6.42-122.45 (Ca), and 1157.42-2570.97(Mg), in B-1 to B-16 respectively. The concentration in (mg/kg) of the specific plot was observed 4424.1 +- 291.12 (Na), 14181.0 +- 556.5 (K), 3404.4 +- 327.0 (Ca), and 3975.2 +- 3847.8 (Mg). The validity of acid digestion method was checked by employing certified reference sample of Spinach NBS-1570. The measured values of elements are in closed agreement with certified values. A study was conducted to evaluate the concentration of macro nutrients accumulation in soil and barley cultivars grown at wheat Research Station Tandojam, using flame atomic absorption spectrophotometer. The samples of different varieties of barely as well as soil samples of agricultural plot where all these varieties of barely were grown , They all are treated with nitric acid and hydrogen peroxide followed by dissolution in deionized water. The great range of each elements were observed in (mg/kg). The sodium, potassium, calcium and magnesium determined in barley cultivars were found to be in the range of 892.86-2312.45 (Na), 4718.89-9514.51 (K), 6.42-122.45 (Ca), and 1157.42-2570.97(Mg), in B-1 to B-16 respectively. The concentration in (mg/kg) of the specific plot was observed 4424.1 +- 291.12 (Na), 14181.0 556.5 (K), 3404.4 +- 327.0 (Ca), and 3975.2 +- 3847.8 (Mg). The validity of acid digestion method was checked by employing certified reference sample of Spinach NBS-1570. The measured values of elements are in closed agreement with certified values. (author)