Gas exchange and leaf contents in bell pepper under energized water and biofertilizer doses

Abstract

The objective of this study was to evaluate the effect of energized water and bovine biofertilizer doses on the gas exchange and NPK contents in leaves of yellow bell pepper plants. The experiment was conducted at the experimental area of the Federal University of Ceará, in Fortaleza-CE, Brazil, from June to November 2011. The experiment was set in a randomized block design, in a split-plot scheme; the plots were composed of treatments with energized and non-energized water and the subplots of five doses of liquid biofertilizer (0, 250, 500, 750 and 1000 mL plant-1 week-1). The following variables were analyzed: transpiration, stomatal conductance, photosynthesis and leaf contents of nitrogen (N), phosphorus (P) and potassium (K). Water energization did not allow significant increases in the analyzed variables. The use of biofertilizer as the only source of fertilization was sufficient to provide the nutrients N, P and K at appropriate levels for the bell pepper crop.

Effects of water salinity and organomineral fertilization on leaf composition and production in Passiflora edulis

“…Currently, there is global investment in sustainable basic farming practices, with the aim of reducing damage to natural resources. In this context, organic fertilizers are a good option for agricultural crops (Borges et al, 2016;Nascimento et al, 2016). Among the inputs used, bovine biofertilizer is of particular importance for many different crops (Dias et al, 2013).…”

Biofertilizers in horticultural crops

“…In fruit species, the application is performed via leaf spraying (Marini, 2008), soil (Mesquita et al, 2010;Silva et al, 2016a;Tullio et al, 2018), and also via fertigation (Santana et al, 2016). In vegetable crops, the application directly on the soil is predominant (Nileemas & Sreenivasa, 2011;Viana et al, 2013;Borges et al, 2014), as well as on the leaves (Oliveira et al, 2014). Cavalcante et al (2019) Biofertilizers in horticultural crops…”

“…In vegetable species, biofertilizers also contribute to the increase in the contents of macronutrients (Table 5). However, differently from the fruit species (Table 4), its application even after dilution in the proportion of 1:1 (50%) in water may cause phytotoxicity due to the excessive content of nutrients, as registered in Capsicum annum L. (Borges et al, 2014), Lycopersicon esculentum (Nileemas & Sreenivasa, 2011), and Cucumis melo L. (Viana et al, 2013). Table 5.…”

“…The bovine manure biofertilizer also interferes with the gas exchanges of horticultural plants. In vegetable species such as C. melo, the effects are associated to the type (Viana et al, 2013); in Beta vulgaris to the fermentation period ; and in C. annuum to the doses of biofertilizer (Borges et al, 2014). In plants of P. edulis, the biofertilizer raised the internal concentration of CO 2 and reduced the stomatal conductance and transpiration, without interfering in the liquid assimilation of carbon dioxide (Freire et al, 2014).…”

Productivity and photosynthetic pigments in bell pepper plants grown in soil with biofertilizer and protected against water loss

“…In addition to reducing the volume of water applied, the nutritional requirements of plants must be met in order to obtain economically viable yields. In this regard, vegetable producers apply organic inputs, such as biofertilizers, which provide nutrients to the plants, to maintain a more balanced plant nutritional status (Borges et al, 2016;Oliveira et al, 2014;Sediyama et al, 2014). As such, the objective of this study was to evaluate the effects of side coating with polyethylene film, mulching with sisal residue and application of chemically enriched bovine biofertilizer on the fruit production and chlorophyll content in bell pepper plants.…”