THE EFFECT OF COMPOST APPLICATION TO IMPROVE THE RED PITAYA YIELD UNDER VARIOUS MIXTURE FERTILIZER RATES
A fertilizer trial was carried out to investigate the effect of compost application in improving the yield of red pitaya (Hylocereus polyrhizus) under various inorganic fertilizer rates. Pitaya was introduced to Malaysia for commercial planting in the early 2000s. Red pitaya was the major species being cultivated and it grew well under local weather conditions and started to produce fruits within a year. Two compost rates at 6 and 12 kg/plant/year were applied under three N:P:K:Mg mixture fertilizer (9.6:4.8:17.6:2.4) rates at 0, 1.2 and 1.8 kg/pillar/year. Two years of yield data were recorded starting at six months after treatment. The cumulative yield data showed the treatments with highest compost application rate of 12 kg/plillar/year in combination with 1.2 and 1.8 kg mixture fertilizer/pillar/year produced higher yields at 24.5 and 24.2 kg/pillar respectively. The treatment with 6 kg compost/pillar/year with same amount of mixture fertilizer only produced 20.7 and 20.8 kg/pillar. Application of compost alone at 12 kg/pillar/year was able to sustain the total fruit production and average fruit weight as compared to additional application with mixture fertilizer. However, application of 6 kg compost/plant/year alone was insufficient to supply adequate nutrient to the plants and caused decrease of yield, total fruit produced and average fruit weight.
Then, K.H. (2014). THE EFFECT OF COMPOST APPLICATION TO IMPROVE THE RED PITAYA YIELD UNDER VARIOUS MIXTURE FERTILIZER RATES. Acta Hortic. 1024, 189-192
flower number, fruit production, fruit weight