Fertilization and postharvest quality of tomatillo (Physalis ixocarpa Brot.)
Alma Delia Hernandez-Fuentes, Jose Manuel Pinedo-Espinoza, Francisco Reyes-Reyes, and Ma. Isabil Reyes-Santamaria
Abstracts of 27th International Horticultural Congress & Exhibition (IHC 2006), August 13-19, 2006, COEX (Convention & Exhibition), Seoul, Korea. 494 pages.
2006
บทคัดย่อ
Fertilization and postharvest quality of tomatillo (Physalis ixocarpa Brot.)
The objective of this study was to evaluate the relationship of dosages of fertilizers to fruit quality of Premier tomatoes.Five fertilization treatments were evaluated: T1, 10-5-10+1 F(kg.ha-1 of N,P2O5 and K2O + one plus foliar application) ; T2, 10-5-10 + 2 F; T3, 20-10-20 + 1 F; T4, 40-20-40+2F) and T5, 10-5-10 (control).The plus foliar applications were 950 g MgSO4.7H2O, 1230 g Ca(NO3)2, 140 g KNO3, 297 g NH4H2PO4, 551 g K2SO4, 150 g FeSO4 . 7H2O, 60 g MnSO4 . 5 H2O, 84 g H3BO3, 6 g CuSO4 . 5H2Oand60 g ZnSO4 . 7H2O . For postharvest analyses, four periods of storage were evaluated: 1 (initial at harvest), 2 (15 days), 3 (30 days) and 4 (45 days), the temperature ofstorage were +20 °C.Parameters evaluated were: weight loss, total soluble solids, vitamin C and titratable acidity.At the end of storage fruit fertilized with the formula 20-10-10 + 1 F had the lowest weight loss with 32.7%.At the beginning of storage the tomatoes fertilized with the formula 40-20-40 + 2 F, had the highest total soluble solids content.At the end of storage, fruit fertilized with the formula 10-5-10 + 1 F had the highest percentage of total soluble solids.After 45 days tomatoes fertilized with the formula 20-10-20 + 1 F had the highest percentage of C Vitamin.The control fruit (10-5-10) had the highest percentage of titratable acidity.