Application of Rice Straw and Tithonia for Increasing Fertilizer Use Efficiency on Paddy Soil

The research was aimed to obtain a combination of rice straw (S) and tithonia (Tithonia diversifolia) (T) to increase chemical fertilizers use efficiency (FUE) on paddy soil which was conducted in Sicincin, Padang Pariaman Regency in 2008. The experiment consisted of 8 treatments (A= recommendation input: 200 kg Urea ha-1 (Ru) + 100 kg SP-36 ha-1 (Rp) + 75 kg KCl ha-1 (Rk)), B = Ru + 2Rp, C = 2.5 Mg Tithonia (T) ha-1 + 75% Ru+10 kg SP36 ha-1 as a starter P fertilizer (P-s), D = T + 75% Ru, E = 5 Mg Rice Straw (S) ha-1 (Sr) + Ru + Rp + Rk, F = Sr + Ru + P-s, G = T + 0.5Sr + 75% Ru + P-s, H = T + 0.5S + 50% Ru + P-s) with three replications. The treatments were randomly allocated in each block Randomized Block Design (RBD). The results showed that application of fresh organic matter (OM) from tithonia + 75% recommended Urea without KCl and P-starter addition on intensification rice field increased synthetic FUE on paddy soil. Application of tithonia for 2.5 Mg ha-1 + 75% of recommended Urea (150 kg Urea), without synthetic P and K fertilizers seemed to be the best treatment to get the highest yield (8.08 Mg Harvested Dry Seed (HDS) ha-1 (= 7.05 Mg Milled Dry Seed (MDS) ha-1) of rice, then it was followed by the treatment based on farmer tradition input with the yield was 7.25 Mg HDS ha-1 (= 6.41 Mg MDS ha-1). The use of fresh tithonia as much as 2.5 Mg ha-1 based on its dry weight could be considered as an alternative fertilizer for rice crops in intensification rice field

APLIKASI KOMPOS TITONIA DAN JERAMI TERHADAP PENGURANGAN INPUT PUPUK BUATAN DAN PENGARUHNYA TERHADAP PRODUKSI PADI

A research about “Application of Tithonia and rice straw compost on reduction of commercial fertilizer application and it effects on rice production” has been conducted in Sicincin, 2x11 Enam Lingkung, Padang Pariaman Region as well as in Soil Laboratory Agriculture Faculty, Andalas University, Padang.  This research was conducted from January until May 2009.  The objective of this research was to evaluate effect of titonia and rice straw compost application at intensification rice field on rice production and reduction of commercial fertilizer use.  A field research was allocated based on Randomized Block Design with 6 treatments, those were: A= Farmer Tradition Input (200 kg Urea ha-1+ 200 kg SP-36 ha-1);B=Recomended Input (R= 200 kg Urea ha-1+ 100 kg SP-36 ha-1+ 75 kg KCl ha-1); C= Application of Compost (5  ton rice straw ha-1) +  100% Recommendation Input (Urea + KCl + SP-36); D= Application of Compost (5 ton rice straw ha-1) +  Urea 200 kg ha-1,without KCl + P-starter 10 kg SP-36 ha-1; E= Application of Compost (Titonia 2,5 ton ha-1 + rice straw 2,5 ton ha-1) + Urea 75 % (R) (150 kg ha-1), withou KCl, and P-starter 10 kg SP-36 ha-1; F= Application of Compost (Titonia 2,5 ton ha-1 + 2,5 rice straw ton ha-1) + Urea 50 % (R) (100 kg ha-1), without KCl,and P-starter 10 kg SP-36 ha-1. Data from field research were statistically analysed.  If the F-calculated was significantly different, they would be further analysed using LSD (5%).  The results showed that application of  rice straw-titonia mix compost on intensification rice field could reduce commercial fertilizer by 50 kg Urea ha-1 (=25% Recommendation), and 75 kg KCl ha-1and 100 kg SP-36 ha-1 (100% recommendation) with increasing yield by 1.1 ton ha-1 Harvested Dry Yield (GKP) and 1.03 t/ha Mill Dry Yield (GKG).  If it was compared to fertilization based on farmer tradition, application of  rice straw-titonia mix compost on intensification rice field could reduce commercial fertilizer by 50 kg Urea ha-1 (25% R), and 190 kg SP-36 ha-1 (95% ).Keywords: compost, fertilizers, intensification,  rice  straw, titonia

Application of Rice Straw and Tithonia for Increasing Fertilizer Use Efficiency on Paddy Soil

The research was aimed to obtain a combination of rice straw (S) and tithonia (Tithonia diversifolia) (T) to increasechemical fertilizers use efficiency (FUE) on paddy soil which was conducted in Sicincin, Padang Pariaman Regencyin 2008. The experiment consisted of 8 treatments (A= recommendation input: 200 kg Urea ha-1 (Ru) + 100 kg SP-36ha-1 (Rp) + 75 kg KCl ha-1 (Rk)), B = Ru + 2Rp, C = 2.5 Mg Tithonia (T) ha-1 + 75% Ru+10 kg SP36 ha-1 as a starter Pfertilizer (P-s), D = T + 75% Ru, E = 5 Mg Rice Straw (S) ha-1 (Sr) + Ru + Rp + Rk, F = Sr + Ru + P-s, G = T + 0.5Sr + 75%Ru + P-s, H = T + 0.5S + 50% Ru + P-s) with three replications. The treatments were randomly allocated in each blockRandomized Block Design (RBD). The results showed that application of fresh organic matter (OM) from tithonia +75% recommended Urea without KCl and P-starter addition on intensification rice field increased synthetic FUE onpaddy soil. Application of tithonia for 2.5 Mg ha-1 + 75% of recommended Urea (150 kg Urea), without synthetic Pand K fertilizers seemed to be the best treatment to get the highest yield (8.08 Mg Harvested Dry Seed (HDS) ha-1(= 7.05 Mg Milled Dry Seed (MDS) ha-1) of rice, then it was followed by the treatment based on farmer tradition inputwith the yield was 7.25 Mg HDS ha-1 (= 6.41 Mg MDS ha-1). The use of fresh tithonia as much as 2.5 Mg ha-1 basedon its dry weight could be considered as an alternative fertilizer for rice crops in intensification rice field.[How to Cite: Gusnidar, S Yasin, Burbey, Yulnafatmawita, S Saleh and R Andhika. 2012. Application of Rice Straw and Tithonia for Increasing Fertilizer Use Efficiency on Paddy Soil. J Trop Soils 17 (2) : 151-156. Doi: 10.5400/jts.2012.17.2.151] [Permalink/DOI: www.dx.doi.org/10.5400/jts.2012.17.2.151

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