The Efficiency of Calcium Boron and Carpox-K Sprays on Fruit Quality of Washington Navel Orange Trees

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A. A. EL- Khwaga
F. M. Abd El- Latif
M. H. M. Baiea
S. F. EL- Gioushy


This research was conducted during seasons 2018 & 2019 on nine-years-old Washington navel orange trees. These trees were grafted on Sour orange rootstock, planted at 5 x 5 meters apart, under surface irrigation conditions, in a private orchard at Manzala village, Toukh region, Qalubia Governorate, Egypt. The seven treatments were used for comparison as follows: T1-100% of chemical NPK (NPK fertilization program adopted at 5, 3 and 1 kg/tree from (NH4)2SO4, superphosphate and K2SO4, respectively) according to the Ministry of Agriculture Recommendation (Control or recommended doses RD). T2-RD+Calcium boron 2 cm3 /L; T3-RD+Calcium boron 3 cm3/L; T4-RD+Carpox-K 1g/L; T5-RD+Carpox-K 1.5g/L; T6-RD+Calcium boron 2 cm3 /L +Carpox-K 1g/L, and T7-RD+Calcium boron 3 cm3/L +Carpox-K 1.5g/L.  The main goal of this investigation was directed towards increasing Washington navel orange fruit quality. The obtained data revealed that all investigated treatments increased fruit quality parameters (physical and chemical properties). However, T7- RD + Calcium boron 3 cm3 /L + Carpox-K 1.5g/L was statistically superior. On the contrary, T1- Control or recommended doses (RD) ranked statistically the lowest treatment in this concern. From the obtained results, It can be concluded that the use of RD+ Calcium boron 3 cm3 / L + Carpox-K 1.5g / L or RD+ Calcium boron 2 cm3/ L + Carpox-K 1g / L could be safely recommended under similar environmental and horticultural practises adopted in this experiment.

Washington navel orange, calcium boron, Carpox-K and fruit quality.

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How to Cite
Khwaga, A. A. E.-, Latif, F. M. A. E.-, Baiea, M. H. M., & Gioushy, S. F. E.-. (2020). The Efficiency of Calcium Boron and Carpox-K Sprays on Fruit Quality of Washington Navel Orange Trees. Asian Journal of Soil Science and Plant Nutrition, 6(4), 23-31.
Original Research Article


Annual Reports of Statistical Institute and Agricultural Economic Research in Egypt; 2016.

Hanson EJ. Sour cherry trees respond to foliar boron application. Hort Science. 1991;26:1142-1145.

Peryea FJ. Boron Nutrition in Deciduous Tree Fruits. Peterson AB, Stevens RG (Eds). Tree fruit nutrition. Good Grower Yakima. Wash; 1994.

Daood EZA, Shahin MFM. Effect of Spraying Magnesium, Boron, Ascorbic Acid and Vitamin B Complex on Yield and Fruit Quality of “Canino” Apricot. Arab Univ. J. Agric. Sci. Ain Shams Uni. Cairo. 2006;1:337-347.

Polevoiy VV. Calcium-related physiological disorders of plants. Ann. Rev. Phytopathol. 1979;17:971-22.

Faust M. Physiology of Temperate Zone Fruit Trees. Awalley- Interscience Publication, USA; 1989.

Mastrangelo MM, Rojas AM, Castro MA, Gerschenson LN, Alzamora SM. Texture and structure of glucose-infused melon. Journal Science of Food and Agriculture. 2000;80:769-776.

Picchioni GA, Weinbaum SA, Brown PH. Retention and the kinetics of uptake and export of foliage-applied labeled boron by apple, pear, prune, and sweet cherry leaves. J. Amer. Soc. Hort. Sci. 1995;120: 28-35.

Hernandez-Munoz P, Almenar E, Ocio MJ, Gavara R. Effect of calcium dips and chitosan coating on postharvest life of strawberries (Fragaria _ ananassa). Postharvest Biol. Technol. 2006;39:247-253.

Poovaiah BW, Leopold AC. Role of calcium in prolonging the storage life of fruits and vegetables, food Technology. 1973;267-270.

Ramezanian A, Rahemi M, Vazifehshenas MR. Effects of foliar application of calcium chloride and urea on quantitative and qualitative characteristics of pomegranate fruits. Scientia Horticulturae 121. 2009; 171-175.

Obreza TA. Importance of potassium in a Florida citrus nutrition program. Better Crops. 2003;87:19-22.

Abbas F, Fares A. Best management practices in citrus production, Tree for. Sci. Biotech. 2008;3:1-11.

Achilea O. Citrus and tomato quality is improved by optimized K nutrition. In: Improved Crop Quality by Nutrient Management. Anac D, Martin P – prevel (Eds). Kluwer Academic Publishers. 1998; 19-22.

Clarkson DT, Hanson JB. The mineral nutrition of higher plants. Ann. Rev. Plant Physiol. 1980;31:239-298.

Maurer M, Truman J. Effect of foliar boron sprays on yield and fruit quality of navel oranges in 1998 and 1999. Citrus and Deciduous Fruit and Nut Research Report. 1999;1-6. Available:

Singh R, Singh R. Effect of nutrient sprays on granulation and fruit quality of Dancy Tangerine mandarin. Hort. Abst. 1981;51: 73-86.

Varduni TV, Minkina TM, Buraeva EA, Gorbov SN, Mandzhieva SS, Omel’chenko GV, Shimanskaya EI, V’yukhina AA, Sushkova SN. Accumulation of radionuclides by pylaisiella moss (Pylaisia polyantha) under urboecosystem conditions. Am. J. App. Sci. 2014;11(10): 1735-1742.

Black CA, Evans DO, Ensminger LE, White JL, Clark FE, Dinauer RC; 1982.

Association of Official Agricultural Chemists. Official Methods of Analysis. 14th Ed. Benjamin Franklin Station. Washington, D. C. U.S.A. 1995;490-510.

Smith F, Cilles AM, Hamilton KJ, Gedes AP. Colorimetric methods for determination of sugar and related substances. Annuals chem. 1956;28:350.

Snedecor GW, Cochran WG. Statistical Methods. Oxford and J.B.H. publishing com. 7th edition. 1980;593.

Duncan DB. Multiple ranges and multiple F. test. Biometrics. 1955;11:1-42.

Komal Y, Barholia AK, Khan R, Patel R. Effect of foliar spray of borax on growth and yield of guava (Psidium guajava L.) cv. Gwalior-27. International Journal of Chemical Studies. 2017;5(6):495-497.

Arora JS, Singh JR. Effect of nitrogen, phosphorus and potassium sprays on guava (Psidium Guajava L.). J Jap. Soc. Hort. Sci. 1970;39:55-62.

Chaitanya CG, Kumar G, Rana BL, Mathew AK. Effect of foliar application of zinc and boron on yield and quality of guava (Psidium guajava L.) cv. L-49. Haryana. J. Hort. Sci. 1997;26(1-2):78-80.

Pal A, Pathak RK, Pal K, Singh T. Effect of foliar application of nutrients on yield and quality of guava (Psidium guajava L.) fruits cv. Sardar. Prog. Res. 2008;3(1):89-90.

Stampar F, Hudina M, Dolence K. Influence of foliar fertilizer on yield and quality of apple (Mallus domestica Borkh.) Kumar Academic Publisher. 1999;91-94.

Soliman SS, Al- Obeed RS. Effect of boron and sugar spray on fruit retention and quality of date palm. American Eurasian Journal of Agric. & Environ. Sci. 2011; 10(3):404-409.

Elsabagh AS. Effect of bunches spraying with some macro and micro-nutrients on fruit retention and physical characteristics of “Deglet Nour” date palm cultivar during Kimiri stage. Research Journal of Agriculture and Biological Sciences. 2012; 8(2):138-146.

Naseri B, Aboutalebi A, Khademi R. Effects of calcium and micro-nutrients amino chelate on quantity and quality of "Kabkab‟ date fruit. International Journal of Farming and Allied Sciences. 2013;2(S2): 1302-1306.

Ashraf MY, Ashraf M, Akhtar M, Mahmood K, Saleem M. Improvement in yield, quality and reduction in fruit drop in Kinnow (Citrus reticulate Blanco) by exogenous application of plant growth regulators, potassium and zinc. Pak. J. Bot. 2013; 45(SI):433-440.

Ullah S, Khan AS, Malik AU, Afzal I, Shahid M, Razzaq K. Foliar application of zincinfluences the leaf mineral status, vegetative and reproductive growth yield and quality of (Kinnow) Mandarin (Citrus reticulate Blanco). Journal of Plant Nutrition. 2012;35:2067-2079.

Moreira A, Moraes LAC, Pereira JCR, Castro C. Retranslocation of nutrients and zinc sulphate fertilization of banana plants in central Amazon. Journal of Applied Horticulture. 2007;9(2):91-96.

Zaied NS, Khafagy SAA, Saleh MA. Effect of Nitrogen and Potassium Fertilization on Vegetative Growth, Fruit Set and Quality of Washington Navel Orange Trees. J. of Applied Sciences Res. 2006;2(11):851-857.

Baghdady GA, Abdelrazik AM, Abdrabboh GA, Abo-Elghit AA. Effect of foliar application of GA3 and some nutrients on yield and fruit quality of valencia orange trees. Nature and Science. 2014;12(4):93-100.

Sajida P, Hafeez-ur-Rehman. Effect of foliar application of zinc, manganese and boron in combination with urea on the yield of sweet orange. Pakistan J. of Agric. Resh. 2000;16(2):135-141.

Abd El-Razik AM, Abdrabboh GA. Effect of some growth regulators and boric acid on yield and fruit quality of Clementine mandarin Citrus reticulata. Al-Azhar J. Agric. Sci. Sector Res. 2008;4:41-50.

Desouky IM, El-Hamady A, Hassan, Abdel- Hamid A. Effect of spraying Barhee flowers with Potassium Sulphate and Boric Acid on fruit set, productivity and date properties. The Fourth Research Center, King Faisal University. 2007;76.

Ghazzawy HS, Khamis MM, Sharf MM, El-Bana A. Effect of pollen grain sources on yield and quality on Zaghloul and Siwi cvs. Journal of Agriculture Research. 2010; 22(12).

Salah AM, Abd-Elhaleem FM, Abd El-Latif HEM, El-Badawy SF, El-Gioushy and BM, AbdAlla. Fruit Set, Productivity and Fruit Quality of Barhi Date Palm As Influenced by Foliar Application with Sugar and Boron under Coverage and Non-Coverage Conditions. Middle East Journal of Agriculture Research. 2019;8(4):1112-1122.

Baiea MHM, EL-Gioushy SF, El-Sharony TF. Effect of feldspar and bio- fertilization on growth, productivity and fruit quality of banana cv. Grande Naine. International Journal of Environment. 2015;4(4):210-218.

Abdelaal SH, El-Sheikh MH, Hassan HAS, Kabeil SS. Microbial bio-fertilization approaches to improve yield and quality of Washington navel orange and reducing the survival of nematode in the soil. Journal of American Science6. 2010;(12):264-271.

Sharaf MM, Bakry Kh A, EL- Gioushy SF. The influence of some bio and organic nutritive addenda on growth, productivity, fruit quality and nutritional status of Washington navel orange trees. Egypt. J. of Appl.Sci. 2011;26(9):2011.

EL-Gioushy SF. Productivity, fruit quality and nutritional status of Washington navel orange trees as influenced by foliar application with salicylic acid and potassium silicate combinations. Journal of Horticultural Science & Ornamental Plants 8. 2016;(2):98-107.

El-Badawy HEM, El-Gioushy SF, Baiea MHM, EL-Khwaga AA. Effect of some antioxidants and nutrients treatments on vegetative growth and nutritional status of Washington navel orange trees. Middle East Journal of Agriculture Research. 2017a;6(1):87-98.

El-Badawy HEM, El-Gioushy SF, Baiea MHM, EL-Khwaga AA. Impact of citric acid, ascorbic acid and some nutrients (Folifert, Potaqueen) on fruit yield and quality of Washington navel orange trees. Asian Journal of Advances in Agricultural Research. 2017b;4(3):1-13.

EL-Gioushy SF, Eissa MA. Effectiveness of different NPK fertilization sources on growth, nutritional status, productivity and fruit quality of Washington navel orange trees. Journal of Horticultural Science & Ornamental Plants. 2019;11(2):134-143. DOI: 10.5829/idosi.jhsop.2019.134.143