The Treatment of Leaf-Fruit Ratio and Foliar Fertilizer on the Quality of Abiu Fruit (Pouteria caimito Radlk.)

Abstract

Abiu (Pouteria caimito Radlk.) is a plant of the Sapotaceae family that can be consumed in fresh, processed, and medicinal products. Abiu has many bioactive compounds in parts of the abiu plant. This research aims to get the information on the interaction between leaf-fruit ratio and foliar fertilizer concentration on the quality of abiu fruit. The experiment was conducted at Balumbang Jaya Garden, Dramaga, Bogor, West Java province, from July 2022 to October 2022. This experiment used split plot factorial; the main plots were leaf fruit ratio treatments (N1, 45 leaves: 1 fruit and N2, 30 leaves: 1 fruit) in each tertiary branch and the subplots were foliar fertilizer treatments (P1: 1 g.L^-1, P2: 2 g.L^-1, and P3: 3 g.L^-1), consisting of 3 replications. The experimental results showed that all treatments have a significant effect on Total Titrated Acidity (TTA) with the high percentage at N2P1 is 19.81%. This research also gave the best results on fruit diameter at 12 weeks after treatment in N2P2 is 73,50 mm, the largest of fruit weigh on N2P2 is 220,32 g, the highest of fruit smoothness in N1P1, N1P2, N2P1, N2P2 have score 3 means there are spots and other symptoms of 26% - 50%, the highest TTA is N2P1 is 19,81%, the highest vitamin C in N2P2 is 106,69 mg.g^-1, and the highest TDS in N1P1 is 12,77 Brix^o.