Changes in leaf nutrient content and quality of pear fruits by biofertilizer application in northeastern Italy

Abstract

The aim of this study was to verify the influence of biofertilizer application resulting from energy production from corn biomass on nutrient uptake by pear plants during the growing cycle, and on fruit quality. The experiment was carried out on a Siltic Haplic Calcisol in the Italian province of Ferrara, in a medium-density Abbé Fétel commercial orchard. Treatments consisted of control (no application) and biofertilizer (30 m3 ha-1 biofertilizer application on the row), with four replicates. The following variables were evaluated: mineral N, microbial biomass and respiration in soil; nutrient content in leaves; and fruit quality. Biofertilizer application increased soil mineral N availability; soil microbial biomass and respiration, but the content of this nutrient did not increase in leaves. Leaf nutrient concentration varied during growth season and biofertilizer application increased potassium, phosphorus and zinc concentration in mature leaves and reduced leaf magnesium and manganese concentration. Biofertilizer application reduced fruit dry matter content, total soluble solids and boron concentration, with no effect on fruit firmness and titratable acidity. Biofertilizer application has positive effect on soil mineral N dynamics and soil microflora, altering the content of nutrients in leaves, favoring fruit production.

Magnesium application improves the morphology, nutrients uptake, photosynthetic traits, and quality of tobacco (Nicotiana tabacum L.) under cold stress

“…Hence, Mg supplementation can effectively alleviate this effect and promote the tobacco growth under cold stress, and may contribute to increase in biomass of tobacco plant. The current study also showed the interesting results of higher root and shoot nutrients contents under +Mg treatment compared with -Mg for cold stress (Figure 3), suggesting the relevance of the causeeffect relationship between temperature and nutrients contents, and this effect was enhanced in the presence of Mg, and line with previous findings (Soniya et al, 2018;Dietrich et al, 2020;Perazzoli et al, 2020;Geng et al, 2021). The nutrient uptake takes place primarily through root interception (Onwuka and Mang, 2018), and the addition of Mg has a positive effect on root length, and as a result, nutrient uptake is increased (Huang et al, 2021).…”

Deficit Irrigation as a Tool to Optimize Fruit Quality in Abbé Fetél Pear

“…In some apple cultivars, it was noted that a higher dry matter content was related to higher flesh firmness [34]. However, in this trial, no relations between fruit dry matter and flesh firmness were observed, providing more similar results to those found in pear and cactus pear [35,36]. Soluble solid content (SSC) represents another important quality parameter, highly related to fruit consumer acceptance (Table 1).…”

Eficiência agronômica e qualidade sanitária de biofertilizantes aplicados no solo em cultivo orgânico da alface

“…As hortaliças folhosas respondem bem a adubação orgânica e consequentemente, apresentam maior aporte em suas características agronômicas (OLIVEIRA et al, 2010). No entanto, é preciso considerar o cultivo sucessivo, que promove maior resultado em consequência da mineralização promovida Revista Verde, v.15, n.4, p.346-352, 2020 pelos micro-organismos que habitam o solo (ZIECH et al, 2014;PINHEIRO et al, 2019).…”