Serapan Nitrogen dan Fosfor Tanaman Bunga Matahari yang Dipupuk Urea dan SP-36 pada Tanah Ultisol

Serapan Nitrogen dan Fosfor Tanaman Bunga Matahari yang Dipupuk Urea dan SP-36 pada Tanah Ultisol

Fertilization; nitrogen; phosphorus; sunflower; Ultisol

Phosphorus and Nitrogen Uptake by Sunflower Due to Urea and SP-36 Fertilization on UltisolABSTRACT. The objective of this research were to study the effect of nitrogen (N) from urea and phosphorus (P) from SP-36 fertilization on N and P uptake by sunflowers (Heliantus annuus L.) on Ultisol.The result of this experiment used was a randomized completely block design arranged in factorial pattern with three replications. The first factor was urea fertilizer (without N, 108.70, 217.40, and 326.10 kg ha-1 urea) and the second factor was P fertilizer (without P, 138.90, 277.80, and 416.70 kg ha-1 SP-36). The result of the experiment showed that, the application of increased urea at various rates of SP-36 affected on soil N total, P available (Bray-1), and yield of sunflowers. Nitrogen and P uptake as well as dry weight of sunflowers by application of 217.40 kg ha-1 urea was higher than without urea. Fertilization of 277.80 kg ha-1 SP-36 had influenced N and P uptake than without SP-36.

Maryati, Maryati; Sekolah Tinggi Pertanian Dharma Wacana

Jurnal Agrista; Vol 11, No 1 (2007): Volume 11 Nomor 1 April 2007; 21-28

1410-3389

1410-3389

Fakultas Pertanian, Universitas Syiah Kuala

2007-04-01

http://jurnal.unsyiah.ac.id/agrista/article/view/1177/1157

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eng

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Peer-reviewed Article

http://jurnal.unsyiah.ac.id/agrista/article/view/1177