Ayman E.A. Shaban

Pomology Department, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt

Ahmed A. Rashedy

Pomology Department, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt

Mohammed I.M. El-Banna

Pomology Department, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt


Excessive solar radiation “global warming” and water scarcity are consider the main environmental constraints for plant growth and production under arid and semi-arid regions. The current research was aimed to study the effect of irrigation levels (100%, 85%, 70% of irrigation requirements), and shading levels (60%, 40%, 0%) on the growth and productivity of ‘Keitt’ mango trees. This experiment was conducted during two growing seasons (2016/2017 and 2017/2018) at El Behera Governorate, Egypt. Decreasing irrigation level (IR) decreased leaf area, malformed panicle, powdery mildew infection, final fruit set, fruit numbers, yield but it increased chlorophyll content, proline content, leaf water content. While, increasing shading levels (SH) increased leaves number, leaf area, fruit set, powdery mildew infection, malformed panicle but it decreased fruit sunburn damage, proline content, chlorophyll content and relative water content. Moreover, accumulative effects of 85% IR + 40% SH significantly increased leaf area, fruit set, fruit number, yield, chlorophyll content, WUE, proline content, relative water content, leaf water content while decreasing powdery mildew and sunburn damage. Results suggest that shading at 40% increased the yield up to 20% and decreased sunburn damage up to 0% under irrigation level of 70%. Shading may be a new technique to alleviate the adverse effects of water stress beside their role in avoiding excessive solar radiation on ‘Keitt’ mango trees.


chlorophyll, malformation, powdery mildew, proline, sunburn, irrigation

Abdrabbo, M.A.A., Ouda, S., Noreldin, T. (2013). Model in the irrigation schedule on wheat under climate change conditions. Nat. Sci., 1118.

Alarcón, J.J., Ortuño, M.F., Nicolás, E., Navarro, A., Torrecillas, A.T. (2006). Improving water-use efficiency of young lemon trees by shading with alumised-plastic nets. Rev. Agric. Water Manage, 82, 387–398.

Allen, R.G., Pereira, L.S., Raes, D., Smith, M. (1998). Crop evapotranspiration guideline for computing crop water. FAO Irrigation and Drainage. Paper 56. FAO, Rome, Italy, pp. 300.

Amarante, C., Steffens, C.A., Argenta, L.C. (2011). Yield and fruit quality of ‘Gala’ and ‘Fuji’ apple trees protected by white anti-hail net. Sci. Hortic., 129(1), 79–85.

Andrews, P., Johnson, J. (1996). Physiology of sunburn development in apples. Good Fruit Grow., 35, 33–36.

Atinksky, E.G., Freeman, S., Sztejnberg, A., Maymon, M., Ochoa, R., Belausoy, E., Palevsky, E. (2009). Interaction of mite Aceria mangifarae and Fusarium mangiferae the causal agent of mango malformation diseases. Phytopathology, 99, 152–159.

Barrs, H.D. (1968). Determination of water deficits in plant tissues. In: Water deficits and plant growth. I. Development, control and measurement. T.T. Kozlowski (ed.). Academic Press, New York, 235–368.

Bates, L.S., Waldren, R.P., Teare, I.D. (1973). Rapid determination of free proline for water-stress studies. Plant Soil, 39(1), 205–207.

Bithell, S.L., Diczbalis, Y., Moore, C. (2010). Review of mango irrigation research in the Northern Territory. Northern Territory Government, Australia. Technical Bull., 334.

Blakey, R.J., van Rooyen. Z., Köhne, J.S., Malapana, K.C., Mazhawu, E., Tesfay, S.Z., Savage, M.J. (2016). Growing avocados under shadenetting. Progress report – Year 2. South African Avocado Growers’ Assosiation Yearbook, 39, 80–83.

Boyer, J.S. (1982). Plant productivity and environment. Science, 218, 443–448.

CLC (Central Laboratory of Climate). (2018). Metrological station El-Behira Governorate, Agricultural Research Center, Ministry of Agriculture, Egypt.

Chakrabarti, D.K., Kumar, R. (1998). Mango malformation, role of (Fusarium moniliforme) and mangiferin. Agric. Rev. Karnal, 19, 126–36.

Chen, B., Chen, J.M., Ju, W. (2007). Remote sensing-based ecosystem-atmosphere simulation scheme (EASS)-Model formulation and test with multiple-year data. Ecol. Modell., 209, 277–300.

Dalberg Global Development Advisors. (2014). 2030 Water Resources Group, 2014 Evaluation. Available: Dalberg_Evaluation [date of access: 1.03.2020]

Dussi, M.C., Giardina, G., Reeb, P. (2005). Shade nets effect on canopy light distribution and quality of fruit and spur leaf on apples cv. ‘Fuji’. Span J. Agric. Res., 3(2), 253–260.

Ebert, G., Casierra, F. (2000). Does netting always reduce the assimilation of apple trees? [Verringert die Einnetzung grundsätzlich die Assimilationsleistung von Apfelba ümen?]. Erwerbs-Obstbau, 42, 12–14.

Elad, Y., Messika, Y., Brand, M., David, D.R., Sztejnberg, A. (2007). Effect of colored shade nets on pepper powdery mildew (Leveillula taurica). Phytoparasitica, 35, 285–299.

El Kenawy, A.M., Lopez-Moreno, J.I., McCabe, M.F., Robaa, S.M., Domínguez-Castro, F., Peña-Gallardo, M.T.R.M., Hereher, M.E., Al-Awadhi, T., Vicente-Serrano, S.M. (2019). Daily temperature extremes over Egypt: Spatial patterns, temporal trends, and driving forces. Atmos. Res., 226, 219–239.

FAO (1982). Crop water requirements irrigation and drainage. Paper No. 24. Rome.

FAO (2018). Drought characteristics and management in North Africa and the Near East. Paper No. 45. Rome.

FAOSTAT (2019). Available: [date of access: January 2019].

Germana, C., Continella, A., Tribulato, E. (2003). Net shading influence on floral induction on citrus trees. Acta Hortic., 614, 527–533.

Hartung, W., Sauter, A., Hose, E. (2002). Abscisic acid in the xylem, where does it come from, where does it go? J. Exp. Bot., 366, 27–32.

Hsiao, T.C. (1990). Measurements of plant water status. In: Irrigation of agricultural crops. Stewart, B.A., Nielsen, D.R. (eds.). Monograph no. 30, Am. Soc. Agron., Madison, WI, pp. 243–279.

Incesu, M., Yeşiloğlu, T., Çimen, B., Yılmaz, B. (2016). Effects of nursery shading on plant growth, chlorophyll content and PSII in ‘Lane Late’ navel orange seedlings. Acta Hortic., 1130, 301–306.

Jackson, J.E., Palmer, J.W., Perring, M.A., Sharples, R.O. (1977). Effects of shade on the growth and cropping of apple trees. III. Effects on fruit growth, chemical composition and quality at harvest and after storage. HortScience, 52, 267–282.

Jifon, J.L., Syvertsen, J.P. (2003). Moderate shade can increase net gas exchange and reduce photo inhibition in citrus leaves. Tree Physiol., 23, 119–127.

Joubert, M.H., Manicom, B.Q., Wingfield, M.J. (1993). Powdery mildew of mango in South Africa, a review. Phytophylactica, 25, 59–63.

Jutamanee, K., Onnom, S. (2016). Improving photosynthetic performance and some fruit quality traits in mango trees by shading. Photosynthetica, 54(4), 542–550.

Kashyap, P., Pramanick, K.K., Meena, K.K, Meena, V. (2012). Effect of N and K application on yield and quality of pomegranate cv. Ganesh under rainfed conditions. Ind. J. Hortic., 69(3), 322–327.

Léchaudel, M., Joas, J. (2007). An overview of preharvest factors influencing mango fruit growth, quality and postharvest behavior. Braz. J. Plant Physiol., 19(4), 287–298.

Lu, P., Chack, E.K. (1997). Flowering behaviour and subsequent productivity in mango. Annual Report. ACIAR Project No. 9012. Canberra, 34 pp.

Medany, M.A., Abdrabbo, M.A.A., Farag, A.A., Hassanien, M.K., Abou-Hadid, A.F. (2009). Growth and productivity of mango grown under greenhouse conditions. Egypt. J. Hort., 36(2), 373–382.

Medrano, H., Tomás, M., Martorell, S., Escalona, J.M., Pou, A., Fuentes, S., Flexas, J., Bota, J. (2015). Improving water use efficiency of vineyards in semi-arid regions. A review. Agron. Sustain. Dev., 35, 499–517.

Meena, V.S., Kashyap, P., Nangare, D.D., Singh, J. (2016). Effect of coloured shade nets on yield and quality of pomegranate (Punica granatum) cv. Mridula in semi-arid region of Punjab. Ind. J. Agric. Sci., 86, 500–505.

Miller, S.S., Hott, C., Tworkoski, T. (2015). Shade effects on growth, flowering and fruit of apple. J. Appl. Hortic., 17(2), 101–105.

Montanaro, G., Dichio, B., Xiloyannis, C. (2009). Shade mitigates photoinhibition and enhances water use efficiency in kiwifruit under drought. Photosynthetica, 7, 363–371.

Mthembu, G.J. (2001). Effect of irrigation and shading on fruit yield and quality in mango. Thesis M. Sci. Faculty of Natural and Agricultural Science, University of Pretoria, South Africa.

Nasir, M.A., Mian, I. (1993). Mango yield and quality as affected by irrigation intervals. Pak. J. Agric. Res., 14(4), 324–328.

Nicolás, E., Barradas, V., Ortuño, M., Navarro, A., Torrecillas, A., Alarcón, J. (2008). Environmental and stomatal control of transpiration, canopy conductance and decoupling coefficient in young lemon trees under shading net. Environ. Exp. Bot., 63(1), 200–206.

Nicolás, E., Torrecillas, A., Dell Amico, J., Alarcón, J.J. (2005). Sap flow, gas exchange, and hydraulic conductance of young apricot trees growing under a shading net and different water supplies. J. Plant Physiol., 162, 439–447.

Nissim-Levi, A., Farkash, L., Hamburger, D., Ovadia, R., Forrer, I., Kagan, S., Oren-Shamir, M. (2008). Light-scattering shade net increases branching and flowering in ornamental pot plants. J. Hortic. Sci. Biotechnol., 83, 9–14.

Nomie, R.A.S. (1994). Physiological studies on Kaki (Diospyro kaki L.). Doctoral dissertation. Zagazig University, Egypt.

Pattanayak, G.K., Biswal, A.K., Reddy, V.S., Tripathy, B.C. (2005). Light-dependent regulation of chlorophyll b biosynthesis in chlorophyllide a oxygenase over expressing tobacco plants. Biochem. Biophys. Res. Comun., 326, 466–471.

Pavel, E.W., de Villiers, A.J. (2004). Responses of mango trees to reduced irrigation regimes. Acta Hortic., 646, 63–68.

Schoeman, M.H., Manicom, B.Q., Wingfield, M.J. (1995). Epidemiology of powdery mildew on mango blossoms. Plant Dis., 79, 524–528.

Shapiro, S.S., Wilk, M.B. (1965). Analysis of variance test for normality (complete samples). Biometrika, 52(3/4), 591–611.

Simmons, S.L., Hofman, P.J., Hetherington, S.E. (1995). The effects of water stress on mango fruit quality. In: Proceedings of Mango 2000 marketing seminar and production workshop. Brisbane, Australia, pp. 191–197.

Snedecor, G.W., Cochran, W.G. (1976). Statistical Methods. 9th Ed., Iowa State Univ. Press, Ames, Iowa, USA. SPSS Statistics 17.0. 2008. SPSS for Windows. SPSS Inc. 2008.

Spreer, W., Hegele, M., Muller, J., Ongprasert, S. (2006). Effect of deficit irrigation on fruit growth and yield of mango (Mangifera indica L.) in Northern Thailand. Acta Hortic., 820, 357–364.

Spreer, W., Nagle, M., Neidhart, S., Carle, R., Ongprasert, S., Müller, J. (2007). Effect of regulated deficit irrigation and partial rootzone drying on the quality of mango fruits (Mangifera indica L., cv. ‘Chok Anan’). Agric. Water Manage., 88, 173–180.

Suzuki, Y., Shioi, Y. (2003). Identification of chlorophylls and carotenoids in major teas by high-performance liquid chromatography with photodiode array detection. J. Agric. Food Chem., 51, 5307–5314.

Wachsmann, Y., Zur, N., Shahak, Y., Ratner, K., Giler, Y., Schlizerman, L., Sadka, A., Cohen, S., Garbinshikof, V., Giladi, B., Faintzak, M. (2014). Photoselective anti-hail netting for improved citrus productivity and quality. Acta Hortic., 1015, 169–176.

Wei, J., Liu, G., Liu, D., Chen, Y. (2017). Influence of irrigation during the growth stage on yield and quality in mango (Mangifera indica L). PLoS ONE 12(4), e0174498.


Ayman E.A. Shaban 
Pomology Department, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt
Ahmed A. Rashedy 
Pomology Department, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt
Mohammed I.M. El-Banna 
Pomology Department, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt



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