Effects of Some Calcium Compounds and Plant Growth Regulators on the Fruit Quality of Ficus carica L. cv. Black Genoa
Keywords:
fig, fruit qualities, calcium nitrate, calcium chloride, plant growth regulatorAbstract
The objective of this experimental was to study the effects of certain calcium compounds and plant growth regulators on the quality of fig fruit. The experiment was conducted at the Royal Agricultural Station Pang Da, Chiang Mai Thailand. A completely randomized design (CRD) with a 3×4 factorial arrangement was used, with treatments applied by spraying the fruits at 7 weeks after fruiting. Two types of calcium compounds (Factor 1) were used: Ca(NO₃)₂ at 200 mg/L and CaCl₂ at 200 mg/L. Three types of plant growth regulators (Factor 2) were used: GA₃ at 50 mg/L, NAA at 50 mg/L, and CPPU at 10 mg/L. The result showed that spraying with 0 mg/L of calcium resulted in the highest total soluble solids (TSS) and TSS/TA ratio, at 16.20 °Brix and 111.61, respectively. For the plant growth regulator factor, fruits sprayed with CPPU had the greatest fruit diameter and fruit weight, at 48.42 cm and 62.51 g/fruit, respectively. On the other hand, spraying with GA₃ resulted in the highest TSS, at 16.63 °Brix. The combination of Ca(NO₃)₂ at 200 mg/L with CPPU at 10 mg/L produced better fruit quality compared to the control.
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