Efisiensi Pupuk P dan Hasil Padi (Oryza Sativa L.) pada Sawah Pasir Pantai Kulonprogo yang Diberi Zeolit

Abstract

Title : Efficiency of P Fertilizer and Yield of Rice ( Oryza sativa L.) at Sandy Soil Paddy Field Kulonprogo that Added Zeolite. The aim of this research were to study the effect of Zeolite to the efficiency of P fertilizer at Sandy Soil Paddy Field Kulonprogo and to know the rate of P fertilizer that gives the highest yield of rice ( Oryza sativa L.) . This research was conducted at Krembangan, Panjatan, Kulonprogo from October 2006 to January 2007. This field experiment was arranged in Split Plot Design. Zeolite as a main plot consists of no Zeolite and 750 kgha-1 Zeolite. P fertilizer as sub plot consist of five levels of P fertilizer, i.e. 0, 20, 40, 60, 80 kg SP 36 ha-1. Each treatment was replicated three times so there are 30 plot treatments. Data were analyzed with F test, Kruskal-Wallis Test, DMRT and Correlation test. There is no interaction effect of P fertilizer and Zeolite to P uptake and Physiological Efficiency. Added 750 kg ha-1 Zeolite can increase P uptake 3.04 g/plant and increase efficiency of P fertilizer up to 62.99% in comparison with control. P Fertilizer has significant effect on total tiller number, weight of rice, weight of 1,000 seeds and percentage of rice empty. Until dosage that used in the experiment, response to P fertilizer is linier. P fertilizer 80 kg ha-1 gives the highest rice yield (6.12 kg/7 m2). Keywords: Efficiency, Zeolite, rice plant