Abstract
The aim was to evaluate the effect of chicken manure and substrate liming in the Campomanesia xanthocarpa (‘gabiroba’) physiology, nutrition and growth. Five dosages of chicken manure (0; 5; 10; 15 and 20 Mg ha-1) were studied without and with substrate liming. The treatments were arranged in a 5 x 2 factorial scheme, in a randomized block design with four replications. There was an improvement on the chemical attributes in the substrate and nutrients contained in the plants where liming was performed. The highest plant height of C. xanthocarpa occurred with liming and 9.03 Mg ha-1 of chicken manure. The diameters were liming-grown plants and 4.57 mm with 5 Mg ha-1 of chicken manure. The photochemical efficiencies of PSII occurred in plants grown on liming substrate. It was concluded that C. xanthocarpa plants had their development optimizes with substrate liming and incorporation of 5 Mg ha-1 chicken manure.
Highlights
The chemical attributes of V% and CEC were influenced by the interaction of the factors under study
The highest availability of Cu, Mn and Fe and K micronutrients occurred in substrates without liming in addition to the higher Al content and potential acidity (H+Al) (Table 1)
The liming process allows greater availability of macronutrients and absorption by C. xanthocarpa, but the micronutrients follow in reverse
Summary
Berg (Myrtaceae) is a tree plant that can reach up to 15 meters high, popularly known as gabiroba, guabiroba, guavirova and tree of gabiroba; this arboreal species can be found in Argentina, Paraguay, Uruguay and Brazil, all the way from the Minas Gerais state to the Rio Grande do Sul state (Lorenzi, 2008). It has nutritional importance because its fruits have high levels of vitamins, fiber (Vallilo et al, 2008) and pectins (Barbieri et al, 2019). Proper correction to increase the availability of essential nutrients can become a method of accelerating the development of C. xanthocarpa, benefiting local populations and favoring the cultivation of the species
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