ABSTRACT
Mineral concentration in fruit of two ecotypes of goldenberry with low chemical fertilization and rhizobacteria

Isaac Guajardo-Paz1, Rosalinda Mendoza-Villarreal1*, Manuel Sandoval-Villa2, Valentín Robledo-Torres1, José Rafael Paredes-Jácome1, and Álvaro Morelos-Moreno1
 
It is a great challenge to achieve sustainable agriculture, due to the current problems of over-fertilization and the contamination that this generates, therefore, it is necessary to use ecological methods such as rhizobacteria and different plant materials. Goldenberry (Physalis peruviana L.) appears in the market of exotic fruits, which are highly nutritious, besides adapting to diverse conditions; however, in Mexico it has been little studied. The objective of the present work was to evaluate the mineral concentration of goldenberry fruits with a low chemical fertilization (CF) regime in two ecotypes Sacha and Chiclayo, applying rhizobacteria, which were planted in a greenhouse with passive ventilation, drip irrigation and clay soil, under a randomized block design with factorial arrangement. In each ecotype, a consortium of rhizobacteria (PC-UA) and a commercial product of Pseudomonas fluorescens (PF) was applied at a dose of 1×108 colony forming units mL-1, in combination with CF at 25% and 50% concentration, and two controls only with CF at 25% and 50%. The PF with 50% CF increased P concentration by 49%, K by 56%, S by 54%, and Fe by 42% in Sacha; PF together with 25% CF increased Mg by 55% in Sacha; PC-UA with 25% CF increased P concentration by 46%, S by 51%, and Fe by 40% in Chiclayo, all of the above compared to the control with Sacha. Under the conditions of the experiment, the combination of PC-UA with Chiclayo, and PF with Sacha promotes goldenberry fruits with high mineral concentration and sustainable crop.
Keywords: Goldenberry, low fertilization, minerals, rhizobacteria, sustainability.
1Universidad Autónoma Agraria Antonio Narro, Departamento de Horticultura, 25315, Saltillo, Coahuila, México.
2Colegio de Postgraduados Campus Montecillo, 56230, Texcoco, Estado de México, México.
*Corresponding author (rosalinda.mendoza@uaaan.edu.mx)