Effects of mycorrhizal association and phosphate fertilization on the initial growth of coffee plants

Abstract

In the establishment of coffee crops, phosphate fertilization is one of the most important soil fertility managements. Aiming to minimize losses, among the options in use are fertilizers with a slow release of nutrients, combined with the inoculation of arbuscular mycorrhizal fungi (AMF). This study aimed to evaluate the initial growth of coffee plants inoculated with AMF and submitted to different types of phosphate fertilizers. The experiment was conducted in a greenhouse, using a complete randomized block design, in a 2 x 4 factorial scheme, with four replications. The first factor referred to the presence or absence of AMF (Rhizophagus clarus) and the second one to phosphate [monoammonium phosphate (MAP)], pelletized organomineral and grainy organomineral fertilizers, as well as a control (without fertilization). The plant height, leaf chlorophyll content, number of plagiotropic branches, leaf area, shoot and root dry matter mass, percentage of root colonization and leaf phosphorus were evaluated. The inoculation with AMF, associated with the pelletized organomineral fertilizer, provided a higher growth for the shoot and root system and higher phosphorus contents, in relation to the other treatments, and it can be an alternative to the implantation or renewal of coffee crops.

Differential and Interactive Effects of Scleroderma sp. and Inorganic Phosphate on Nutrient Uptake and Seedling Quality of Castanea henryi

“…Pi application in this study seemed to have no effect on improving the growth of C. henryi seedlings, which is consistent with the study on Mesua ferrea [64] and coffee [65]. Still, there are many studies indicating that a large application rate of Pi could significantly promote the growth of seedlings [66][67][68].…”

Uso De Rocha Carbonática E Microrganismos Como Suprimento Alternativo De Fósforo

“…As raízes micorrizadas podem exercer influência sobre as diferentes populações de microrganismos da rizosfera, que por sua vez, também afetam indiretamente a disponibilidade de P para plantas (ARAÚJO et al, 2020;KAISER et al, 2015), fato observado neste estudo, tanto no P disponível, quanto nas massas secas das plantas inoculadas com os FMA e atividade enzimática do solo.…”

Structure of AMF Community in an Agroforestry System of Coffee and Macauba Palm

“…The same microorganisms improve soil structure and aggregation by extra-radical hyphae and/or glycoprotein exudation (Banks et al, 2011;Zhang et al, 2017). All these benefits are dependent on the ecological context, which includes both microclimatic and edaphic aspects (Aldrich-Wolfe et al, 2020;Cruz et al, 2020;Araújo et al, 2020). In intercropped systems, this concern needs to be considered, to manage the microclimate conditions (Arias et al, 2012;Dobo et al, 2018;Aldrich-Wolfe et al 2020), as determined by the density planting and distance to the tree, aiming to maintain or reach optimum AMF diversity.…”

“…These fungi stand out on account of their increased absorption of water and low mobility nutrients in the soil, such as P and Zn (Gianinazzi et al, 2010;Díaz-Ariza et al, 2021) The hyphae network increase the volume of soil explored by the root system of plants, accessing ions located far from the root surface (Smith & Smith, 2011). Thus, the AMF association favors both growth, coffee productivity (Siqueira et al, 1998;Bhattacharya & Bagyaraj, 2002) and decreased phosphate fertilization (Perea Rojas et al, 2019;Araújo et al, 2020).…”