Abstract
The studies on management of fruit cracking were carried out for three consecutive years (2006 to 2008) using integrated approach. The plant material was selected from "Punjab Government Progeny Orchard and Nursery, Attari, Amritsar". The investigation comprised three sets of experiments during the fruiting years 2006 and 2007. The first experiment comprised irrigation and mulching practices; the second consisted of graded doses of farmyard manure (FYM), inorganic fertilizer and biofertilizer and in the third experiment foliar spray of 1-Naphthaleneacetic acid (NAA), K2SO4 and Borax were applied. The statistically best treatments accrued from three different experiments during 2007 and 2008 were combined and tested in 2008. It was revealed that the optimum utilization of different orchard cultural practices viz. proper water management, appropriate fertilizer programme and good preventive spray schedule brought profound changes in fruit cracking intensity. Hence, the consortium of intelligent management practices such as irrigation at 20% available soil moisture depletion (ASMD), mulching with black polythene, application of FYM (75 kg/tree), inorganic fertilizer (Nitrogen 350 g/tree), azotobacter (18 g/tree) and foliar spray of NAA at 40 ppm in lemon cv. Baramasi substantially reduced the cracking losses by 94.5% and resulted in impressive impact on fruit quality. Key words: Irrigation, mulching, organic fertilizer, inorganic fertilizer, biofertilizer, growth regulator, nutrients.
Highlights
In the changing global scenario, success of citrus cultivation depends largely on the ideal quality attributes to ensure better marketability
Experiment II: Effect of organic manure, inorganic fertilizer and biofertilizer on fruit cracking in Baramasi lemon
Experiment III: Effect of foliar spray of growth regulator (NAA) and micronutrients on fruit cracking in Baramasi lemon
Summary
In the changing global scenario, success of citrus cultivation depends largely on the ideal quality attributes to ensure better marketability. The summer crop is beset with severe fruit cracking which is one of the most exasperating problems causing heavy financial losses. The summer crop has been observed to be prone to severe fruit cracking. Fruit cracking is a worldwide problem which affects a number of fruits and losses are sometimes high. Cracking is manifested as a meridian fissure of the peel, usually developing from the stylar end and reaching the equatorial zone or even extending beyond that. Irrespective to its origin, crack develops as a consequence of disruption between peel and pulp growth. It was assessed that during the phase of cell enlargement, if the peel does not restart its growth, when the pulp expansion takes place, the fruit splits
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