Repairing Old and Damaged Cocoa Plants Through Rehabilitation Without the Felling of Trees

Abstract

<p><span lang="EN">This study aims to evaluate the effectiveness of <em>Trichoderma asperellum</em> and <em>Azotobacter chroococcum</em> in providing nutrients and nutrient uptake after treatment inarching grafting on cocoa trees' rehabilitation efforts. The Split Plot Design, with two factors, namely the application of <em>T. asperellum</em> and <em>A. chroococcum</em> were repeated three times and continued using ANOVA and Tukey HSD at a 5%. Rehabilitation of cocoa plants that are relatively old age can be done without the need to cut down a cocoa tree, by way of modification <em>Inarching grafting</em> with environmentally friendly farming systems, so that farmers do not need a long time to produce cocoa beans. This research concluded that the <em>inarching grafting</em> method can be used to rehabilitate cocoa plants of relatively old ages and damage, with applications, <em>T. asperellum</em> (4 g/l) and <em>A. chroococcum</em> (4 × 10<sup>8</sup> CFU/ml) the dose of 40 ml per plant with a frequency of twice application to each plant. This treatment is the best interaction that can reduce the number of young fruits falling (74.15%), boost the number of flowers (264.71%), the number of young fruits formed (271.65%), and the number of surviving fruits (117%) and production.</span></p>

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