Abstract
The main problems of sweet corn cultivation in Ultisol medium are sour reactions, Al saturation and height P fixation, as well as low availability macro, micro nutrients especially Mo and Si. The provision of empty oil palm biochar is able to increase the growth and yield of sweet corn crops because the Biochar TKKS contains macro and micro nutrients such as N, P, K, Ca and Mg and also as a useful soil material to improve physical, chemical and biological properties of soil to increase pH, C-Organic, Ca, K, Mn, P, and mycorrhiza application be able to increase the availability of P so the fixation of P can be suppressed. The purpose of this research to learn the main influences of the Biochar TKKS, the main influence of mycorrhiza and the interaction of the growth and yield of sweet corn in the Ultisol medium. The experiment was conducted in the Experimental farm of the Agriculture Faculty, the University of Riau from May to August 2019. Research of experiments in the form of 4×3 factorial using Complete Random Design. The Biochar TKKS consists of four levels (0, 25, 3.75, 50 g polibag -1 ) as the first factor, mycorrhiza consists of three levels (0, 10, 15 g plant -1 ) as the second, each repeated three times. The results of the study show that giving of the biochar TKKS dose 3.75 g polibag -1 and mycorrhiza dose 15 g plant -1 in the Ultisol medium increased on plant height, straw weight, cob length and number of rows of each cob compared to no treatment.
Highlights
The main problems of sweet corn cultivation in Ultisol medium are sour reactions, Al saturation and height P fixation, as well as low availability macro, micro nutrients especially Mo and Si
able to increase the availability of P so the fixation
The purpose of this research to learn the main influences of the Biochar tandan kosong kelapa sawit (TKKS)
Summary
Bahan yang digunakan adalah benih jagung manis varietas Bonanza, tanah Ultisol berasal dari Desa Batu Belah, Kampar Riau, biochar TKKS, mikoriza koleksi Universitas Andalas, insektisida Decis 25 EC, Furadan 3G, fungisida Dithane M-45, label sampel, polibag ukuran 40x35 cm, pupuk dasar (Urea, TSP dan KCl) dan air. Penelitian berupa eksperimen dalam bentuk faktorial 4x3 yang disusun menurut rancangan acak lengkap (RAL). Faktor pertama adalah biochar TKKS terdiri dari empat taraf (0, 5, 7,5, 10 g polibag-1). Faktor kedua adalah mikoriza terdiri dari tiga taraf (0, 10, 15 g tanaman-1) masing-masing diulang tiga kali. Parameter yang diamati meliputi tinggi tanaman, diameter batang, volume akar, bobot kering akar, bobot jerami, bobot tongkol berkelobot per polibag, bobot tongkol tanpa kelobot per polibag, panjang tongkol, diameter tongkol, jumlah baris per tongkol, dan jumlah baris per tongkol. Data hasil pengamatan dianalisis secata statistik, kemudian dilanjutkan dengan uji jarak berganda Duncan’s Multiple Range Test (DMNRT) pada taraf 5%
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