PENINGKATAN KETERSEDIAAN DAN SERAPAN FOSFOR PADA PEMBIBITAN KELAPA SAWIT MAIN NURSERY DENGAN APLIKASI KOMPOS TANDAN KOSONG KELAPA SAWIT DAN JENIS PUPUK P PADA TANAH LATOSOL

Pauliz Budi Hastuti, Sri Manu Rohmiyati

Abstract


This study aims to determine the effect of empty fruit bunches (efb) compost, Phosphate solubilizing bacteria (PSB), lime and various of P fertilizer in order to increase of P availability and P uptake in the main nursery oil palm seedlings in latosols. The experiment was conducted by using a factorial design, arranged in a completely randomized design. The first factor was the application of efb compost: without efb compost, efb compost, PSB and lime. The second factor was the various of P fertilizer: SP-36, RP, guano and (NPKMg + dolomit) as a control. The results showed that guano fertilizer in various combinations has the highest role in increasing the availability of P in the soil. The highest levels of P leaves and P stems are produced by administration of guano fertilizer in various combinations. P uptake of leaf showed almost the same value in all combinations of treatments except the combination treatment of inorganic fertilizers with PSB produced the lowest value. The highest uptake of P-stem was shown by giving efb compost combined with guano or SP36 fertilizer or inorganic fertilizer. While the lowest P content and P-uptake of the stem is indicated by inorganic fertilizer treatment. The highest growth of palm oil seedlings is produced by a combination of efb compost with all types of P fertilizers or inorganic fertilizers. Provision of PSB with inorganic fertilizer resulted in the lowest growth of oil palm seedlings.

Keywords: P uptake, P available, main nursery, efb compost, latosol.


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