APS_July2019

M ango

155

Table 3. Treatment description and composition of the biostimulants used in the experiment. Table 3 . Treatment description and composition of the biostimulants used in the experiment. 352 Treatment Composition Dose T1 Without biostimulants spray --- T2 Nitric nitrogen 10.0%, potassium oxide 5.0%, calcium oxide 7.15%, Magnesium oxide 1.2%, boron 0.1% and l-α amino acid 0.35% 3.0 mL·L -1 T3 1.0 mL·L -1

Organic nitrogen 5.0%, nitric nitrogen 1.2%, ammoniacal nitrogen 1.3% and amide nitrogen 2.5%. Raw materials: water, soybean pie, liquid sodium hydroxide, urea, ammonium nitrate, citric acid, Lithothannium seaweed extracts and sodium molybdate Organic nitrogen 6.0%, Organic carbon of biologically origin 20.8% and total protein 31.0%. Raw materials: water, soybean pie, liquid sodium hydroxide, leonardite, Lithothannium seaweed extracts, citric acid, free amino acids Calcium 8.0%, boron 2.0% and Sucrose

T4

2.5 mL·L -1

T5

2.5 mL·L -1

353 354 355 356 357 358 359 360 361

reached physiological maturity which was characterized by pulp color (yellow cream), following the fruit selection parameters recommended by the Brazilian Program for Horticulture Modernization (2004) for commercial farms. Production per plant was measured using a precision scale (0.5 grams of precision) for calculating fruit yield (t ha -1 ).  After harvest, the fruits were stored for 23 days at 20°C until reaching the matura- tion stage 4 (Brazilian Program for Horti- culture Modernization, 2004). Postharvest analyses were performed on 10 fruits per replication, as outlined by Zenebon et al. (2008) and included the usual parameters: length and width were measured with a digital paquimeter (0.01 mm–300 mm) and expressed in cm; fruit mass was measured using a precision balance (0.01 g precision) and expressed in g; fruit firmness (10 5 ·N/m 2 ) was measured using a fruit firmness tester on both fruit sides; soluble solids concen- tration (SS), expressed as percentage (%),

were measured with an Abbe ® refractometer (Bausch and Lomb, Rochester, NY, USA); for the titratable acidity (TA), 20 g of macer- ated fruit pulp from a fruit was brought to a final volume of 100 mL by adding distilled water. A 20 mL sample was taken from the mixture, and three to four drops of phthalein were used as an indicator. This suspension was titrated with 0.1 N sodium hydroxide (NaOH). The results were expressed as g of citric acid/100 g pulp; SS/TA ratio; and num- ber of fruits with the physiological disorder known as internal breakdown.  Statistical analyses included analysis of variance (ANOVA) by year and means were compared withTukey’s test. All the calculations were performed using the ASSISTAT Statistical Program (ASSISTAT 7.7, UFCG, Campina Grande, Brazil) and terms were considered significant at P ≤ 0.05. Results and Discussion  In the first season (2016), trees with T5