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Vijay Vijay R. P. S. Dalal B. S. Beniwal Hemant Saini

Abstract

An investigation to evaluate the effect of foliar application of potassium and its spray schedule on yield and yield parameters in sweet orange cv. Jaffa was undertaken at experimental orchard, Department of Horticulture, CCS Haryana Agricultural University, Hisar during the year 2014-15. The results revealed that the foliar application of potassium nitrate at the rate of 2 and 4 % and potassium sulphate at 1.5 and 3.0 % significantly improved average fruit weight, fruit diameter, percentage of medium and large fruits, and fruit yield of sweet orange cv. Jaffa over control (water spray). The trend was vice-versa on the percentage of small fruits. The number of fruits per plant could not differ significantly due to various treatments. Among K sources and doses, foliar application of KNO3 at 4 % exhibited superiority over other treatments with respect to yield and yield parameters followed by KNO3 at lower dose (2 %) or K2SO4 at higher dose (3 %). Among various spray schedules, application of three sprays of K in the last week of April, May and August were found superior or at par in improving yield and yield parameters with 2 sprays in the last week of April and August. The fruit yield was recorded the highest (76.90 kg/plant) with a combination of the foliar application of KNO3 at 4 % and 2 sprays in the last week of April and August which was non-significant with KNO3 with an additional spray in the last week of May. The findings signify the importance of K spray in improving yield and yield parameters of sweet orange under semi-arid climatic conditions of north western India.

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Keywords

Foliar application, Fruit yield, Potash, Spray schedule, Yield parameters

References
Abd-Allah, A. S. E. (2006). Effect of spraying some macro and micro nutrients on fruit set, yield and fruit quality of Washington Navel orange trees. J. Applied Sci. Res., 2(11):1059-1063
Alva, A.K., Mattos, D.J., Paramasivam, S., Patil, B., Dou, H. and Sajwan, K.S. (2006). Potassium management for optimizing citrus production and quality. Int. J. Fruit Sci., 6:3-43
Anonymous, (2013). Package of Practices for Horticultural Crops and Products. Directorate of Publications, Haryana Agric. Univ., Hisar, India
Boman, B. J. and Hebb, J. W. (1998). Post bloom and summer foliar K effects on grapefruit size. Proc. Fla. State Hort. Soc., 111:128-135
Boman, B. J. (2002). KNO? foliar application to ‘Sunburst’ tangerine. Proc. Fla. State Hort. Soc., 115:6-9
Dutta, P., Ahmed, B. and Kundu, S. (2011). Effect of different sources of potassium on yield, quality and leaf mineral content of mango in West Bengal. Better crops-South Asia, Pp. 16-18
Erner, Y., Kaplan, B., Artzi, B. and Hamu, M. (1993).
Increasing citrus fruit size using auxins and potassium. Acta Hort., 329:112-116
Hamza, A., Bamouh, A., Guilli, M. El. and Bouabid, R. (2012). Response of Clementine citrus var. Cadoux to foliar potassium fertilization; Effects on fruit production and quality. e-ifc, No. 31, Pp:8-15
Harold, J. E. and George, J. S. (1966). Role of mineral elements with emphasis on the univalent cations. Ann. Pl. Physiol., 11:47-76
Josan, J. S., Sandhu, A. S., Singh, R. and Monga, P. K. (1995). Effect of various nutrient sprays on fruit quality of lemon. Indian J. Hort., 52:288-290
Miller, J. E. and Hoffman, P. J. (1988). Physiology and nutrition of citrus fruit, growth with special reference to Valencia. A mini-review. Proc. 6th Int. Citrus Cong., Tel Aviv, Pp. 503-510
Mostafa, E. A. M. and Saleh, M. M. S. (2006). Response of Balady mandarin trees to girdling and potassium sprays under sandy soil conditions. Res. J. Agric. and Biol. Sci., 2(3):137-141
Obreza, T. A., Morgan, K. T., Albrigo, L. G. and Boman, B. J. (2008). Recommended fertilizer rates and timing. In: Nutrition of Florida citrus trees. 2nd ed. edited by T.A. Obreza and K.T. Morgan.
Panse, V. G. and Sukhatme, P. V. (1967). Statistical methods for agricultural workers. 2nd ed. ICAR Publication, New Delhi, pp:336-356
Rattanpal, H. S., Rani, Shobha, Kumar, A. and Dhaliwal, H. S. (2005). Effect of potassium and 2,4-D sprays onphysical parameters of Kinnow fruits. Haryana J. Hort. Sci., 34(3-4):222-223
Sangwan, A. K., Rattanpal, H. S., Arora, N. K. and Dalal, R. S. (2008). Effect of foliar application of potassium on fruit yield and quality of Kinnow mandarin. Environ. Ecol., 26(4C):2315-2318
Saxena, M. and Gandhi, C. P. (2014). Indian Horticulture Database, National Horticulture Board, Ministry of Agri. Government of India, India.
Vijay, Dalal, R. P. S., Beniwal, B. S. and Saini, H. (2016). Impact of foliar application of potassium and its spray schedule on yield and quality of sweet orange (Citrus sinensis) cv. Jaffa. J. Applied Natural Sci., 8(4): 1893-1898
Yadav, D., Singh, S. P. and Singh, S. (2014). Effect of foliar application of potassium compounds on yield andquality of ber (Zizyphusmauritiana) cv. Banarasi Karaka. Int. J. Res. Applied Natural and social sci., 2:89-92
Section
Research Articles

How to Cite

Effect of foliar application of potassium and its spray schedule on yield and yield parameters of sweet orange (Citrus sinensis Osbeck) cv. Jaffa. (2017). Journal of Applied and Natural Science, 9(2), 786-790. https://doi.org/10.31018/jans.v9i2.1276