ارزیابی وضعیت تغذیه‌ای کدو با روش‌ انحراف از درصد بهینه (DOP) در منطقه خوی

نوع مقاله: مقاله پژوهشی

نویسندگان

1 گروه علوم خاک دانشکده کشاورزی دانشگاه ارومیه، نازلو ارومیه ایران

2 دانشیار گروه علوم خاک دانشکده کشاورزی دانشگاه ارومیه ایران

3 استادیار گروه علوم خاک بخش تحقیقات اب و خاک، تبریز ایران

چکیده

روش انحراف از درصد بهینه (DOP) از روش­های تفسیر نتایج تجزیه برگ و تشخیص وضعیت تغذیه­ای گیاهان می­باشد. به­منظور ارزیابی وضعیت تغذیه­ای کدو (Lagenaria Vulgaris) با استفاده از روش DOP، نمونه­های برگ از 122 مزرعه کدو در شهرستان خوی جمع­آوری و غلظت­های عناصر غذاییB ،Cu ،Zn ،Mn ،Fe ،Mg ،Ca ،K ،P  ،N تعیین شدند. مزارع با توجه به عملکرد به دو گروه با عملکرد بالا و پایین تقسیم گردیدند. میانگین غلظت عناصر غذایی در مزارع کدو با عملکرد بالا به عنوان ارقام مرجع برای محاسبه شاخص­های DOP استفاده شد. در این روش اولویت­بندی عناصر غذایی پرمصرف و کم­مصرف در مزارع با عملکرد پایین به­صورت K>P>Mg>Ca>N  و Zn>Fe>B>Cu>Mn به­دست آمد بر این اساس عنصر نیتروژن مثبت­ترین شاخص­­ و عناصر پتاسیم و روی منفی­ترین شاخص­ها را داشتند. شاخص­های­ تعادل تغذیه­ای DOP نیز در مزارع با عملکرد پایین خیلی بزرگتر از صفر به­دست آمد که نشان­دهنده عدم تعادل عناصر غذایی در این مزارع می­باشد. لذا در نهایت می­توان گفت کمبود عناصر پتاسیم و روی می­تواند دلیلی بر عملکرد پایین کدو در منطقه خوی باشد و مدیریت کودی صحیح از جمله مصرف کودهای حاوی این عناصر می­تواند رشد و عملکرد کدو را در این منطقه بهبود ببخشد.

کلیدواژه‌ها


عنوان مقاله [English]

Evaluation of Nutritional Status of Squash by Deviation from Optimum Percentage (DOP) Method in Khoy Region

نویسندگان [English]

  • Mahrokh Sharifmand 1
  • Ebrahim Sepehr 2
  • Ahmad bybordi 3
1 Iran
2 Associate prof. soil chemistry and fertility (phd). Faculty of Agriculture. Urmia University. Urmia. Iran
3 Assistant prof of plant nutrition and fertility (phd) soil and water research department. Tabriz. Iran
چکیده [English]

Abstract
 Deviation from the optimum percentage (DOP) is an important method for interpretation of the results of chemical analysis and diagnosis of nutritional status of plants. In order to evaluate the nutritional status of squash (Lagenaria Vulgaris) through DOP, 122 leaf samples were collected from squash fields of Khoy region and N, P, K, Ca, Mg, Fe, Mn, Zn, Cu and B were analyzed. The squash fields were divided into high and low yielding groups. The mean of nutrients concentration in high yielding-fields was selected as norms for the calculation of DOP indices. DOP indices showed that macro- and micro nutrients requirement as follow K>P>Mg>Ca>N and Zn>Fe>B>Cu>Mn respectively. So nitrogen had the most positive index but potassium and zinc had the most negative indices among nutrients. DOP nutritional balance index was much more than zero indicating nutritional imbalance in this region. Finally, it was concluded that K and Zn deficiencies are more critical in reduction of the squash yield and the application of their fertilizers can improve growth and yield of squash in the region.

کلیدواژه‌ها [English]

  • norm
  • Nutrients concentration
  • Nutritional balance index
  • Yield
References

Baldock J.O., and Schulte E.E. 1996. Plant analysis with standardized scores combines DRIS and sufficiency range sufficiency range approaches for corn. Agronomy Journal, 88: 448-456.

Bertrand I.R., Holloway E., Armstrong R.D., and McLaughlin M.J. 2003. Chemical Characteristics of phosphorus in alkaline soils from southern Australia. Aust. Journal of Soil Research, 41: 61-76.

Brakke F.H., and Salih N. 2002. Reliability of foliar analyses of Norway spruce stands in a Nordic gradient. Silva Fannica, 36: 489-504.

Dordipour E., Emami P., and Daryashenas A.M. 2012. Evaluation of nutritional balance in peach orchards through deviation from optimum percentage (DOP) method. Journal of Soil Management and Sustainable Production, 2(1): 79-94. (In Persian)

Dovlati B., Oustan S.H., and Samadi A. 2007. Forms of potassium and Q/I relationship for Sunflower growing soils in Khoy region. Journal of Agricultural Science and Technology and Natural Resources, 12(46): 623-636. (In Persian)

Dow A.I., and Roberts S. 1982. Critical nutrient ranges for crop diagnosis. Agron Journal, 74:401-403.

Emami A. 1996. Methods of plant analysis. Soil and Water Research Institute, technical publication No. 982, Tehran, Iran, 128p. (In Persian)

Ghoreyshi S.J., Sepehr E., and Samadi A. 2017. Evaluation nutritional status of watermelon by deviation from optimum percentage (DOP) method in Poldasht, west Azerbaijan. Journal of Researches of soil application, 5(2): 41-51. (In Persian)

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. Journal of Agricultural Research, 68: 264-273.

Jimenez S.J., Pinochet Y., Gogorcena J.A., and Betran M. 2007. Influence of different vigor cherry rootstocks on leaves and shoots mineral composition. Scientia Horticulturae, 112: 73-79.

Lawrence J.R., Ketterings Q.M., and Cherney J.H. 2008. Effect of nitrogen application on yield and quality of silage corn after forage legume-grass. Agronomy Journal, 100: 73-79.

Majidi A., and Rahnemaie R. 2015. Effect of physical and chemical characteristics of calcareous soils on adsorption and desorption reaction of boron surface. Journal of Soil Researches, 29(3): 321-334. (In Persian)

Malakouti M.J., Keshavarz P., and Karimian N. 2008. A comprehensive approach towards identification of nutrients deficiencies and optimal fertilization for sustainable agriculture. 7nd Ed. with full revision, Tarbiat Modars University Press, Tehran, Iran, 755p. (In Persian)

Malakouti M.J., and Riyazi Hamadani A.H. 1991. Fertilizers and soils fertility. Tehran University Press, Iran, 598 pp. (In Persian)

Montanes L., Heras L., Abadía J., and Sanz M. 1993. Plant analysis interpretation based on a new index: deviation from optimum percentage (DOP). Journal of Plant Nutrient, 16: 1289-1308.

Pereira B.F., Stoffella P.J., and Melfi A.J. 2011. Reclaimed wastewater: Effects on citrus nutrition. Journal of Agricultural Water Management, 98: 1828–1833.

Peyghami Khoshemehr H., Sepehr E., and Momtaz H.R. 2014. Comparison of potassium adsorption characteristics of cultivated and virgin soils in Khoy region. Journal of Application Research of soil, 2(2): 1-14. (In Persian)

Sajjadi A. 1992. Diagnosis and Recommendation Integrated System-DRIS. Technical issue No. 847. Soil and water research institute, Tehran, Iran, 94p. (In Persian)

Salardini A. 1992. Soil Fertility. Publications of Tehran University, Iran, 1739p. (In Persian)

Sharma J., Shikhamany S.D., Singh R.K., and Raghupathi H.B. 2005. Diagnosis of nutrient imbalance in Thompson seedless grape grafted on Dog Ridge rootstock by DRIS common. Soil Science of Plant Anal, 36: 2823-2838.

Shirvani M., and Shariatmadari H. 2002. Application of sorption isotherms for determining the phosphorus buffering indices and the standard P requirement of some calcareous soils in Isfahan. Journal of Agricultural and Natural Resources Sciences and Technology, 6(1): 121-130. (In Persian)

Tisdale S.L., Nelson W.L., and Beaton J.D. 1993. Soil fertility and fertilizer. Macmillan USA, 648 p.