Nutritional Disorders, and Determination of Optimum Levels of Nutrients in wheat and corn in Qazvin province.

Nutritinal balance is as important factor in improving the yield and quality of agricultural product. In this regard an assessment of soil fertility, determining optimum fertilizer need and an analysis of nutritional balance in product are essential. Foliar analysis is a suitable method for evaluating the nutritional status. The method of deviation from optimum percentage (DOP) is a new and easy method compared to the diagnosis and recommendation integrated system (DRIS) method in the interpretation of foliar analysis and its index for individual nutrients is easily calculated. In order to study of Nutritional Disorders, Determination of optimum levels of nutrients in wheat and corn analysis by using DOP method Qazvin (for wheat 46 farms, corn 19 farms) and Boinzahra (wheat 41 farms and corn 23 farms), Tkestan (wheat 20 farms and corn 22 farms) and Abyek (wheat 25 farms and corn 25 farms) cities carried out. Leaf samples were collected and analyzed for N, P, K, Fe, Zn, Cu, Mn and B concentrations. The result showed that: In wheat of Qazvin city the standard element concentration for N, P, K were 3.85, 0.27, 2.5 Percent and for Fe, Zn, Cu, Mn and B were 160, 40, 4, 84 and 18 mg/kg in dry matter. That the average order of nutrients requirrment in these as following were MnNFePZnCuKB. The standard element concentration in Boin zahra city for N, P, K were 3.08, 0.208, 2.684 Percent and for Fe, Zn, Cu, Mn and B were 153.6, 11.4, 4.7, 65.2 and 29.7 mg/kg dry matter. That the average order of nutrients requirrment in these as following were NPMnZnCuFeBK. The standard element concentration in Takestan city for N, P, K were 3. 8, 0.196, 2.53 Percent and for Fe, Zn, Cu, Mn and B were 221.375, 17.625, 2.875, 69.125 and 21.075 mg/kg dry matter. That the average order of nutrients requirrment in these as following were ZnPMnFeNBCuK. The standard element concentration in Abyek city for N, P, K, were 3.9, 0.238, 1.921 Percent and for Fe, Zn, Cu, Mn and B were 349.5, 17.15, 5.8, 70.9 and 13.35 mg/kg dry matter. That the average order of nutrients requirrment in these as following were BMnPKFeNZnCu. In corn the standard element concentration in Qazvin city for N, P, K were 2.26, 0.205, 1.905 Percent and for Fe, Zn, Cu, Mn and B were 226.75, 42.25, 10.5, 140.5 and 9.75 mg/kg dry matter. That the average order of nutrients requirrment in these as following were FeMnNZnKPCuB. the standard element concentration in Boin zahra city for N, P, K were 2. 6, 0.25 Percent and for Fe, Zn, Cu, Mn and B were 218.75, 45, 11, 114 and 28.62 mg/kg dry matter. That the average order of nutrients requirrment in these as following were Fe ZnFePKNCuMnB. the standard element concentration in Takestan city for N, P, K were 3.96, 0.1905, 1.75 Percent and for Fe, Zn, Cu, Mn and B were 162.25, 36.5, 11.75, 109.5 and 37.325 mg/kg dry matter. That the average order of nutrients requirrment in these as following were NMnZnFeCuPKB. the standard element concentration in Abyek city for N, P, K were 3.0575, 0.2, 2.53 Percent and for Fe, Zn, Cu, Mn and B were 232.33, 35.5, 11. 5, 123 and 40.28 mg/kg dry matter. That the average order of nutrients requirrment in these as following FeBZnCuMnPKN. According to the result elements priorities for wheat in Qazvin province manganeses, nitrogen, iron and phosphorous, in Boin Zahra nitrogen and phosphorous, for Takestan zinc, phosphorous, manganeses, iron, nitrogen, boron and copper in Abeyek boron and manganese, respectively.Ordering of elements priorities for corn in province Qazvin iron in Boin Zahra of zinc and iron for Takestan of nitrogen, manganese, zinc, iron and copper for Abeyek iron, boron, zinc, copper and manganese repectively. Keyword: Nutritional Disorders, Optimum levels, Wheat, Corn, Qazvin