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The use of rootstocks in fruit production is extremely important, as well as reducing juvenility also enables faster production. In this context, the objective was to evaluate the effect of different rates of manure and application of organic fertilizer on the growth of guava rootstocks. The experiment was conducted in the greenhouse of the State University of Paraiba (UEPB) in municipality of Catole do Rocha-PB, Brazil. The experimental design was completely randomized (CRD), with in factorial 5 × 2, with 6 repetitions. The treatments consisted of the combination of manure proportions: (0, 20, 40, 60 and 80% v/v) mixture to the ground (2: 1 v v-1) and the second factor consisted of organic fertilizer application (with and without). 30, 60, 90 and 120 days after sowing (DAS) evaluated the following variables: plant height, leaf number, stem diameter, leaf area, root length, absolute growth rate and relative plant height , stem diameter and leaf area, dry matter of root mass, shoot dry matter mass, the total dry matter and Dickson quality index. The use of cattle manure at the rate of 80% positively influenced the growth of guava rootstocks with the application of organic fertilizer.       Key words: Psidium guajava L., substrate, organic agriculture.

Guava rootstocks growth under incorporation of cattle manure and application of organic fertilizer the base of fruit of peel