, work in this field must be developed. We evaluated the impact of macronutrient omission on nutritional disorders and in vitro growth of B. catenulata . Material and Methods B. catenulata plants were collected in Dec. 2013 in Cachoeira da Rapadura (lat
macronutrients in leaves affect this mechanism of the alternate bearing cycle of ‘Nadorcott’ mandarin. To address this question, seasonal changes in concentrations of macronutrients, namely, N, P, K, Ca, and Mg, were determined in leaves of “on” and “off
stages has the potential to increase uptake efficiency and reduce nutrient runoff. Macronutrients, in absolute terms, are required in higher quantities compared with micronutrients only. Therefore, plant response to macronutrient supply is of particular
)]. Whole plant sampling can be used to look at nutrient partitioning and distribution/redistribution to provide a full picture of nutrient dynamics. The present study was conducted to investigate the seasonal pattern of macronutrient uptake and
requirements of plant species ( Munguambe et al., 2017 ). There are no reports in the literature on the effect of macronutrient omission on the growth and volatile constituents of L. gracilis . The aim of the present study was to evaluate the effects of
, which can prevent diseases ( Charoensiri et al., 2009 ). To meet market demands, it is essential to observe the nutritional status of plants during cultivation, especially regarding macronutrients, because, when present in adequate concentrations, they
Hayes, 2003 ). The physiological effect is dominated by the uptake of the form of the macronutrient N. Uptake of NH 4 + in excess of nitrate NO 3 – results in a net excretion of H + , whereas net H + consumption results from uptake of NO 3 – in
Our understanding of the quantities and seasonal patterns of nutrient uptake by mature fruit trees has been limited by the difficulties in working with the large woody biomass of these organisms, tree-to-tree variability, and the resolution to distinguish between recently acquired nutrient from the nutrient background of the tree. We have coupled the use of stable isotopes of nitrogen (N) with periodic whole-tree excavations and nutrient analyses during the year. Vegetative growth, reproductive growth, and nutrient storage in perennial tree parts during tree quiescence represent nutrient sinks. Data obtained using mature pistachio, prune, and walnut trees indicate that macronutrient accumulation in metabolic sinks is associated with increases in tree macronutrient uptake. These data are consistent with the concept that sink removal of phloem-mobile nutrients from vascular circulation may provide the stimulus to further uptake of the nutrient(s) sequestered. We propose that the recognition of those patterns can be used to increase the efficiency of tree nutrient recovery and utilization.
-Modeste, Quebec, Canada) was selected as the base substrate for the study. The base substrate contained no incorporated macronutrient fertilizers. Biochar used in this study was obtained from a local bioenergy pyrolysis unit [Synterra Energy (formerly Red Lion Bio
determine and compare the substrate pH, EC, and primary macronutrient status of three ground PBH products to sphagnum peat over time in a greenhouse environment and to determine if these chemical properties were within acceptable ranges for use in substrates