Accumulation and exportation of nutrients by yellow Passion fruit cv. IAC 275

Abstract

The mineral nutrition is essential to increase yield and fruit quality of passion fruit. There is no information of nutrient accumulation throughout the production cycle. Thus, in order to assist in the correct nutrients supply and update the recommendations, studies involving cultivars and cultivation techniques are necessary. The aim of this study was to evaluate the plant growth, the nutrient accumulation and the exportation in plants of yellow passion fruit cv. IAC 275. The experimental design was a randomized block, with three replications, where the treatments were evaluation times. Stem length, dry mass matter and nutrient accumulation in aerial part (leaves and stems), fruits and roots were evaluated. The maximum daily accumulation rate and periods of maximum nutritional requirement were calculated, in addition to the nutrient extraction and exportation. The nutrient accumulation at the end of the cycle, at 450 days after sowing, were in g plant-1: N (178.5) > K (162.4) > Ca (70.8) > Mg (14.8) > S (13.3) > P (11.0) and mg plant-1: Fe (827.6) > Mn (130.7) > Zn (69.8) > B (56.7) > Cu (17.8).

Organic cultivation of yellow passion fruit using tall seedlings with long root systems

“…The plants originated from seedlings with root systems between 100 cm and 125 cm presented higher yields in harvests 1 and 2, as well as total yield ( Figure 2). This may be related to the greater height and base diameter of these plants when taken to the field (Figure 1), since they possess a shorter juvenile period and higher capacity of water absorption due to the greater soil volume explored by the roots (Beyer et al, 2016;Mattar et al, 2018;Souza et al, 2008). DAT), which demand 954.98 mm (Silva & Klar, 2002), as a consequence of the higher accumulation of leaf area and fruit production.…”

Nitrogen fertilization and spacing in productivity and quality of passion fruit implanted with advanced seedlings

“…The seedlings transplantation to the field occurred in 10/11/2017, 224 days after sowing, when the coverage fertilizations with N (ammonium nitrate source, 32 % of N and 1% of K 2 O) started, for the application of the treatments. N doses were applied between November/17 and May/18 and the relative quantities varied according to the need of the crop (MATTAR et al, 2018). These were 10; 22.5; 22.5; 22.5; 22.5% of the total N at 36; 97; 134; 167; 218 days after transplantation (DAT) respectively.…”

“…However, although nitrogen (N) is the most extracted nutrient and the second most exported (HAAG et al, 1973;MATTAR et al, 2018) the recommended N amount for the crop varies between 94 and 235 kg ha -1 year -1 (RIPADO, 2010;MIYAKE et al, 2018). In addition, studies showed variable responses on N effect on fruit quality as well as nutritional studies in area with the presence of HFV, the performance evaluation of advanced seedlings in the field on N doses effect and its correlation with productivity are scarce (AULAR et al, 2014;MIYAKE et al, 2018;BERTANI et al, 2019).…”

Growth, yield, nutrient accumulation and export and thermal sum of Italian zucchini

“…bras., Brasília, v.37, n.2, April-June 2019 S tudies on accumulation and export of nutrients show quantity and period of high gains of these nutrients as function of plant age, indicating when nutrient addition is necessary. Thus, these are important tools for management and fertilization of crops as also helping update existing recommendations (Furlani & Purquerio, 2010;Purquerio et al, 2016;Moraes et al, 2018;Mattar et al, 2018).…”