CIS 1124.qxp5
نویسنده
چکیده
carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P), potassium (K), sulfur (S), calcium (Ca), magnesium (Mg), boron (B), chlorine (Cl), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), nickel (Ni), and zinc (Zn). These 17 essential elements, also called nutrients, are often split into three groups (fig. 1). The first group is the three macronutrients that plants can obtain from water, air, or both— carbon (C), hydrogen (H) and oxygen (O). The soil does not need to provide these nutrients, so they are not sold as fertilizers.
منابع مشابه
Chemical Constituents of the Essential Oils From the Leaves, Flowers and Seeds of TAGETS MINUTA L. bY GC/MS
Tagetes is a genus of 56 species of annual and perennial mostly herbaceous plants in the sunflower family (Asteraceae or Compositae).In this research our goal was recognizing the main components of the plant to extract useful ones. Essential oils of the leaves, seeds and flowers of Tagets minuta L., growing wild in Iran, were extracted by hydrodistillation an...
متن کاملChemical Constituents of the Essential Oils From the Leaves, Flowers and Seeds of TAGETS MINUTA L. bY GC/MS
Tagetes is a genus of 56 species of annual and perennial mostly herbaceous plants in the sunflower family (Asteraceae or Compositae).In this research our goal was recognizing the main components of the plant to extract useful ones. Essential oils of the leaves, seeds and flowers of Tagets minuta L., growing wild in Iran, were extracted by hydrodistillation an...
متن کاملProtein dynamics: whispering within.
Dynamic communication between atoms within folded proteins is potentially important for function, but its measurement has been a challenge. Now, a combined NMR and modelling study provides insights on the presence and strengths of such correlations.
متن کاملEctodermal Dysplasia: A Case Report
Ectodermal dysplasia is a hereditary disease characterized by dysplasia of tissues of ectodermal origin. The incidence of ectodermal dysplasia is rare (1 in 100,000 birth). This case report discusses the features, classification and prosthetic treatment plan (upper partial denture and lower complete denture for upper partial and lower complete edentulous arches respectively). This treatment pla...
متن کامل