Fruit production and quality of guava Paluma as a function of humic substances and soil mulching

Fonseca da Rocha Leonardo, Ferreira Cavalcante Lourival, Cavalcante Nunes Járisson, Gustavo de Luna Souto Antônio, Cássio Pereira Cavalcante Alian, Herbert Lucena Cavalcante Ítalo, Esfrain Pereira Walter
2016 African Journal of Biotechnology  
The uses of humic substances and organic residues for soil mulching have been more common during last years. This way, an experiment was carried out to evaluate the fruit quality and yield of guava cv. Paluma as a function of humic substances and organic soil mulching in Brazil. The experiment was performed from January 2012 to June 2013 (first trial) and from July to November 2013 (second trial) using a randomized blocks with treatments distributed in a factorial arrangement (5 × 2 × 2) of
more » ... humic substances doses (0, 10, 20, 30 and 40 mL of Humitec plant -1 ), two organic mulching use (with and without organic mulching) and two consecutive harvests, with four replications of two plants each. Humic substances enhance fruit production more efficiently in guava plants grown without soil mulching. Guava fruit production increases from the first to the second harvest. Fruit quality for titratable acidity, soluble solids, vitamin C and soluble solids/titratable acidity ratio is adequate independently of soil mulching use. Humic substances improve fruit quality of guava cv. Paluma. Under soil and climate conditions, and considering the first two production cycles of guava, it is possible to recommend about 20 mL L -1 of humic substances for production of high quality guava fruits.
doi:10.5897/ajb2016.15587 fatcat:qcxph63l3vestgjbjlsirgazie