OPTIMASI TEPUNG TULANG AYAM DENGAN PEMANGKASAN PADA SEMANGKA KUNING (Citrullus lanatus L.)
DOI:
https://doi.org/10.35335/fruitset.v14i4.7476Keywords:
Branch Pruning, Chicken Bone Meal, Flowering Time, Total Soluble Solids, Yellow WatermelonAbstract
Overuse of inorganic fertilizers can degrade soil quality, and chicken bone meal (CBM), a poultry by-product containing nitrogen, phosphorus, and calcium, is a potential organic alternative, yet its effects on watermelon alone or combined with branch pruning remain poorly documented. This study evaluated three CBM rates (0, 2.25, and 4 t ha?¹) combined with three pruning levels (no pruning, three branches, and five branches), plus an NPK control, on the growth, yield, and fruit quality of yellow watermelon (Citrullus lanatus). The research was conducted in Cicalengka, Bandung Regency, using a single-factor Randomized Complete Block Design (RCBD) consisting of 10 structured treatment combinations with three replications, yielding 30 experimental units. Data were subjected to analysis of variance followed by Duncan’s multiple range test (P<0.05). Treatments significantly affected flowering time (P<0.01), total soluble solids (P<0.01), and fruit diameter (P<0.05), but not plant length, leaf number, stem diameter, canopy diameter, harvest index, fruit weight per plant, rind thickness, or sensory acceptance. Flowering was earliest at 2.25 t ha?¹ CBM with three branches (28.00 days after planting) and latest at 0 t ha?¹ with five branches (40.33 days), a 12.33-day difference. Total soluble solids ranged from 4.33 °Brix (4 t ha?¹, unpruned) to 10.33 °Brix (2.25 t ha?¹, five branches). Fruit diameter was largest at 2.25 t ha?¹ without pruning (8.07 cm) and smallest at 4 t ha?¹ with three branches (5.67 cm). The most favorable treatment differed among parameters, and no single treatment was superior overall.
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