Uji Aplikasi (Trichoderma Sp) dan Biochar Sekam Padi pada Bibit Okulasi Karet (Hevea brasiliensis) yang Ditumpangsari dengan Tanaman Padi (Oryza sativa L)

Abstract

This study aims to determine the effect of the Trichoderma Sp application test combined with rice husk biochar so that it can be seen the effect on the growth of rubber grafting seedlings intercropped with rice plants, which was carried out in Sampali Village, Percut Sei Tuan sub-district, Deli Serdang Regency, with altitude of 16 meters above sea level flat topography and alluvial soil types. This research starts from June to August 2018. The design used in this study was a Factorial Randomized Block (RBD) with 2 Treatment Factors, namely ; 1) Trichoderma Sp factor which consists of 3 dose levels, namely T0 = Control (without Trichoderma Sp) ); T1 = 50 g / polibag; T2 = 100 g / polibeg; and 2) Biochar factors of rice hunsk which consist of 4 levels of dosage, namely: B0 = Control (without Biochar) ); B1 = 50 g / polibeg; B2 = 100 g/polibag; B3 = 150 g/polibeg. This research was carried out with replications of 3 replications. The parameters observed in this study were shoot burst time, shoot length, leaf number, leaf area (cm2), leaf color, and bud diameter (cm). The results obtained from this study are that Trichoderma Sp has a very significant effect on leaf area aged 5-12 weeks after buds burst. The administration of rice husk biochar also had a very significant effect on leaf area aged 9, 10, and 12 weeks after buds burst.