ارزیابی وضعیت تغذیه‌ای کدو با روش‌های تلفیقی تشخیص و توصیه ((DRIS و انحراف از درصد بهینه DOP)) در منطقه خوی

Angeles DE, Sumner ME and Barbour NW, 1990. Preliminary nitrogen, phosphorous, and potassium DRIS norms for pineapple.         Hort. Sci. 25: 652-6. 

Beaufils ER, 1973. Diagnosis and Recommendation Integrated System (DRIS). A general scheme for experimentation and                  calibration based on principles developed from research in plant nutrition. Soil Science, Bull No. 1, University of Natal,                Pietermararitzburg, South Africa, 132p.

Bertrand IR, Holloway E, Armstrong RD and Mclaughlin MJ, 2003. Chemical Characteristics of phosphorus in alkalin soils from        southern Australia. Aust. J. Soil Res.41:61-76.

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Hirzell J and Walter I, 2008. Availability of nitrogen, phosphorus and potassium from poultry litter and conventional fertilizers           in a volcanic soil cultivated with silage corn. Chilean Journal of Agricultural Research 68: 264-273.

Hundal HS, Singh D and Brar JS, 2005. Diagnosis and recommendation integrated system for monitoring nutrient status of                  mango trees in Sub-mountainous area of Punjab, India. Commun. Soil Sci. Plant Anal. 36: 2085-2099.

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Meldal-Johnsen A and Sumner ME, 1980. Foliar diagnostic norms for potatoes. J. P1ant Nutr. 2 (25): 569-576.

Mourao Filho FAA, 2004. DRIS: Concepts and applications on nutritional diagnosis in fruit crop. Scientia Agricola 61: 550-560.

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Schaller K and Lohnertz O, 1984. Accommodation of DRIS-system to grape nutrition. In: International Colloquium for the                  Optimization of Plant Nutrition, Montpellier, 4: 1255-1263.

Sharma J, Shikhamany SD, Singh RK and Raghupathi HB, 2005. Diagnosis of nutrient imbalance in Thompson seedless grape            grafted on Dog Ridge rootstock by DRIS Commun. Soil Sci. Plant Anal. 36: 2823-2838.

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Walworth JL and Sumner ME, 1987. The Diagnosis and Recommendation Integrated System (DRIS). Advances in Soil Science,          6:149-188.