Influence of Cobalt Rates and Nitrogen Sources on Moringa Yield Quantity and Quality

Nadia Gad; Lyazzat Bekbayeva; Misni Surif

Volume : IV, Issue : VIII, August - 2015

Influence of Cobalt Rates and Nitrogen Sources on Moringa Yield Quantity and Quality

Nadia Gad, Lyazzat Bekbayeva, Misni Surif

Abstract :

Twopot experiments were conducted to evaluate the influence of cobalt rates and nitrogen sources on Moringa yield quantity and quality during 2012 and 2013 seasons. Experiments were carried out in the wire house, National Research Centre. Nitrogen sources namely, ammonium sulphate, ammonium nitrate and urea were used. Cobalt was added once in the form of cobalt sulphate at the rates of 0.0, 2.5, 5.0, 7.5, 10.0, 12.5 and 15.0 ppm cobalt. The obtained results are summarized in the following:– • All nitrogen sources increased the concentrations of both NO3–N and NO2–N in Moringa leaves. • The contents of NO3–N and NO2–N in Moringa leaves were greaterin N fertilized plants as compared to that of the unfertilized one. • The highest concentrations of NO3–N, NO2–N in Moringa leaves were recorded with urea compared with ammonium nitrate, while the lowest figures recorded with ammonium sulphate. • All cobalt rates significantly reduced the content of No3–N and No2–N Moringa leaves compared with control under different nitrogen sources in two studied seasons. • Cobalt has a significant promotive effect on all growth and yield parameters as well as nutritional and chemical contents compared with control. • The best yield (fresh weight of herb) and growth parameters were evident with ammonium sulphate and at a record increment of cobalt, i.e. 10 ppm. • Cobalt at 10 ppm had a favorable effect onMoringa growth and yield parameters as well as nutritional status, carbohydrates, proteins, vitamin A, vitamin C and chlorophyll content. • All cobalt treatments were not significant effect of chlorophyll content in Moringa leaves with different sources of nitrogen in two studied seasons.