Efficacy of plant growth regulator and food preservative against Penicillium rots of Kinnow (Citrus deliciosa Ten.) fruits
Keywords:
Kinnow, post-harvest, Penicillium, rots, PGR, food preservativeAbstract
Kinnow (Citrus deliciosa) fruits are prone to attack with various post-harvest fungal rots. Among these, Penicillium rots viz., green mould rot (P. digitatum) and blue mould rot (P. italicum) are most destructive, sharing around 40 to 50 per cent of the total post-harvest fruit decay occurred in Sriganganagar belt of Rajasthan. Studies were conducted to evaluate the efficacy of Naphthalene acetic acid (NAA) and potassium metabisulfite (KMS) against these two post-harvest rots during 2004-05 and 2005-06. The results revealed that the dipping treatment of KMS solution proved significantly superior to NAA in respect of retarding the incidence of these rots. The reduction of 57.53 and 60.58 per cent incidence was recorded in green mould rot and blue mould rot respectively in pre-inoculation treatment of KMS while 50:70 and 54.53 per cent reduction in incidence of these rots was noted in post-inoculation treatment of the same chemical in comparison to control. The disease incidence was found to increase with increasing period of incubation.Downloads
References
Adaskaveg, J.E., Forster, H. and Sommer. N.F. 2002.
Principles of postharvest pathology and management of decay of edible horticultural crops. P. 195-196, In: A.A. Kader (ed). Postharvest Technology of Horticultural Crops. III'd edition. University of California. ANR publication 3311. Anonymous. 2008. Preliminary report of 2007-08. Department of Horticulture, Govt. of Rajasthan.
Jaipur.
Dennis, C. 1977. Susceptibility of stored crop to microbial
injection. Ann. App. Biol. 65: 431-432.
Dhatt, A.S., Randhawa, J.S.. Kaur. H., Singh, G. and Sharma, R. 1995. Seal packaged storage of Kinnow fruits under ambient conditions. Proc. Nat. Seminar on Post-harvest Technology of fruits, Bangalore, pp. 286-89.
Godara. S.L. 1994. Studies on post-harvest diseases of orange fruits. Ph.D. Thesis, Rajasthan Agricultural University, Bikaner.
Gupta, A.K. and Pathak, V.N. 1990. Epidemiology and management of papaya fruit rots. Summa Phytopathologica. 16: 92-105.
Gutter, Y. 1969. Effectiveness of pre-inoculation treatments with sodium or thiophenyl phenate, thiabendazole and benomyl for green mould control in artificially inoculated eureka lemons. Pl. Dis. Reptr. 53: 479- 482.
Jakhar, K.M. 2003. Epidemiology and management of post- harvest fruit rot of tomato incited by Alternaria alternata. M.Sc. Thesis, Rajasthan Agricultural University. Bikaner.
Luvisi, D.A. 1992. Sulfur dioxide fumigation of table
grapes. University of California, Division of Agriculture and Natural Resources, Bulletin, 1932. Sharma, I.M., Harender Raj and Kaul, J.K. 1994. Studies on post-harvest diseases of mango and chemical control of stem-end rot and anthracnose. Indian Phytopath., 47: 197-200.
Sharma, R.N. 2007. Physico-chemical analysis and
management of post-harvest fungal diseases of Kinnow fruits (Citrus deliciosa Ten.). Ph.D. Thesis, Rajasthan Agricultural University, Bikaner.
Singh, D. and Thakur, A.K. 2006. Post-harvest diseases of Kinnow and their management. Tech. Bull. No.: CIPHET/Pub/1-2006, Horticultural Crops Processing Division, CIPHET (ICAR), Abohar (Punjab), pp-1.
Singh Shyam, Shivankar, V.J., Srivastava, A.K. and Singh, I.P. 2004. Advances in Citriculture. Jagmander Book Agency, Delhi-110 005.
Sommer, N.F. 1982. Postharvest handling practices and postharvest diseases of fruits. Plant Disease. 66: 357-364.
Thompson, A.K. 1996. Post-harvest technology of fruits
and vegetables. Blackwell Science Ltd., London. Tomkins, R.G. and Trout, S.A. 1931. The use of ammonium salts for the prevention of green mould in citrus. J. Pomol. Hort. Sci. 9: 257-264.
