Characterization of the synergistic effect of fungal isolates in suppressing Ganoderma boninense and enhancing oil palm growth by Anuar, Muhammad Salahudin Kheirel, Hashim, Amalia Mohd, Sundram, Shamala, Rahman, Siti Rahmah Abdul, Ho, Chai Ling, Wong, Mui-Yun, Saidi, Noor Baity, Wasoh, Helmi, Yusof, Mohd Termizi