Effects of paclobutrazol and kno3 over flowering and fruit quality in two cultivars of mango manila

Résumé 0

"Different doses of Paclobutrazol (PBZ) combined with KNO3were evaluated in order to determine their effect on floweringand fruit quality on two mango clones. The experiment was carriedout at the INIFAP’s Cotaxtla Experimental Station in Veracruz,Mexico. A 14-year old orchard of Manila Cotaxtla 1 andManila Cotaxtla 2 clones planted in 8×8m plots without irrigationwas used. The experimental design was of random blocks insplit plots. The eight treatments applied were: a) 0.0, b) 0.5, c)1.0, d) 1.5, e) 2.0g a.i. PBZ per meter of canopy diameter, allcombined with the application of 2% KNO3, f) 4% KNO3 withoutPBZ, g) 1.5g. a.i. PBZ, without KNO3, and h) control withneither product added. PBZ was applied on the soil and KNO3in two applications on the foliage. The variables consideredwere number of panicles, fruit weight, fruit weight loss, totalsoluble solids (TSS), titratable acidity (TA) and firmness. PBZand KNO3 application induced a larger number of advancedpanicles in relation to the control, with higher values observedas PBZ dose increased. However, in total flowering there was nosignificant difference between treatments (p