Abstract
Abstract Annona crassiflora is a medicinal species and source of food with little information about its nutritional requirements during the initial phase. Therefore, the objective of this study was to evaluate liming, phosphate fertilization and its interaction in A. crassiflora seedlings. The experiment was in a 4 × 4 factorial scheme with four replications in a randomized block design. The base saturations were: 8.3%, 25%, 50% and 75% and phosphorus: 0 mg dm-3, 100 mg dm-3, 200 mg dm-3 and 400 mg dm-3. The variables evaluated were biometrics, biomass and nutritional analysis. The species responded to the factors in isolation, and the increase in base saturation levels and phosphorus doses promoted significant effects for biometric variables, biomass, calcium, magnesium, nitrogen, phosphorus and potassium content. The saturation level promoted the best results, being 75% base saturation, while the highest phosphorus dosage was 400 mg dm-3.
Highlights
AND OBJECTIVESAmong the native fruits of the Cerrado region, Annona crassiflora Mart. stands out as it presents great potential as a source of food, traditional/folk medicine and in the field of the cosmeceutical industry (Bailão et al, 2015; Botrel et al, 2016; Valadares et al, 2015)
There was no significant interaction between the elevation of base saturation and phosphorus doses for the characteristics evaluated in the A. crassiflora seedlings
Phosphorus doses promoted an increasing linear effect, with 400 mg dm3 being the dose that promoted the highest values in height, diameter and number of leaves, with values estimated by the equations of 14.78 cm, 9.61 mm and 5.94 leaves simultaneously (Figure 1b)
Summary
AND OBJECTIVESAmong the native fruits of the Cerrado region, Annona crassiflora Mart. (popularly known as marolo or araticum) stands out as it presents great potential as a source of food, traditional/folk medicine and in the field of the cosmeceutical industry (Bailão et al, 2015; Botrel et al, 2016; Valadares et al, 2015). In recent times there has been increasing interest in producing seedlings of native species destined for food and medicine, and for the conservation and recovery of degraded areas; yet, little is known about many of the native species of the Cerrado (Souza et al, 2018). The practice of liming has elevated the growth of several species due to the benefits that this practice offers, among them, elevated hydrogenation potential, neutralization of toxic aluminum (Al3+), addition of calcium (Ca2+) and magnesium (Mg2+) to the soil which increases base saturation, creating more favorable conditions to root growth, increasing water and nutrient uptake (Freitas et al, 2017). Calcium and magnesium additions are extremely important because they are components of fundamental structures in plants such as the cell wall and chlorophyll molecules, respectively (Santin et al, 2013)
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