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Determination of Diagnosis and Recommendation Integrated System (DRIS) norms for diagnosis of nutrient situation and study of nutrients balance for irrigated wheat crop in East Azarbayjan
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Abstract: (3391 Views) |
| In order to determine DRIS norms for irrigated wheat, 982 plant samples were collected from Irrigated wheat pilot project in East Azarbayjan (Tabriz, Maragheh, Marand, Mianeh, Shabestar, Sarab, Bostanabad, Bonab, Malekan, Ahar and Kaleibar). Plant samples were taken from flag leaf at anthesis stage, for 5 years (1999-2004). Following sample preparation, N, P, K, Fe, Mn, Zn, Cu and B concentration were analysed in Lab. At maturity stage, data of grain yield were collected in all relevant fields. The results showed that means of optimal N, P, K, Fe, Mn, Zn, Cu and B concentrations by DRIS and boundary lines were 2.46%, 0.23%, 1.74%, 137.9 mg. kg-1, 59.4 mg. kg-1, 16.7 mg. kg-1, 16.5 mg. kg-1 and 63.0 mg. kg-1, respectively. To use DRIS for irrigated wheat crop, data interpretation and studying of nutrient balance in plant, DRIS norms for 24 expression forms were defined. It can be concluded that expression forms for irrigated wheat crop in East Azarbayjan, except for B and Cu expression forms, can be used for deficiency diagnosis and studying of nutrient balance in plants. |
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| Keywords: DRIS norms, Boundary lines, Irrigated wheat |
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Full-Text [PDF 195 kb]
(1889 Downloads)
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Type of Study: Scientific & Research |
Subject:
Special
Received: 2015/02/28 | Accepted: 2015/02/28 | Published: 2015/02/28
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