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SKRIPSI PENGARUH PERBANDINGAN MEDIA DAN DOSIS PUPUK DAP TERHADAP PERTUMBUHAN TANAMAN SEDAP MALAM (Polyanthes tuberosa, L.)
ABSTRACT
The effect of medium comparison and DAP fertilizer dose on growth of tuberoos (Polyanthes tuberosa, L.) research, had been carried out since April 05th until September 09th, 2001. The research was done at Telogosari Village, Grabag District, Magelang Regency, Central Java Province. The altitude is 675
m.
The research used factorial experiment (3x4) in completely block randomized design, consists of three replications. The first factor is medium comparison, soil: sand 1:1, 2:1 and 1:2. The second factor is DAP fertilizer dose: 0; 0,2; 0,6 and 1 g/plant.
The result of research shows that medium with comparison soil: sand 21 and 12 got heightest plant, the most leaves number, the most number of green tubers, weighest of the fresh weight of straw and weightest of weight of dry straw, while the highest yield for fresh weight of straw and weight of dry straw given at medium comparison soil: sand = 2: 1. The increased dosage of DAP fertilizer till certain dose is able to improved plant height, number of leaves, number of green tubers, fresh weight of straw and weight of dry straw that still will increased at 1 g/plant dosage. The increased dosage of DAP fertilizer at medium with comparison of soil: sand = 2: 1 will increase number of leaves until dose 0,6-0,7 g/tanaman, while weight of dry straw still keep increase till dose 1 g/plant.
0,66 g/plant DAP fertilizer dosage at medium comparison soil:sand=2:1 shows that the best growth at tuberoos (Polyanthes tuberosa, L.).
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