KETERSEDIAAN NITROGEN PADA TIGA JENIS TANAH AKIBAT PEMBERIAN TIGA BAHAN ORGANIK DAN SERAPANNYA PADA TANAMAN JAGUNG

Intan Nariratih, Muhammad Majid B Damanik, Gantar Sitanggang Gantar Sitanggang

Abstract


This research concernsof knowing nitrogen(N) availability in soil, N-plant absorption and
plant growth in three different kinds of soil with the incrementof three organic matters from
different sources. The research conducted at the screen house, Chemistry and Fertility Laboratory,
and Research and Technology Laboratory, Faculty of Agriculture, University of North Sumatera,
Medan. This researchused Randomized Block Designed (RBD) Factorial that consists of two
factors and three repeatations which had made thirty six units of experiment. The first factor are the
kind of soil (T) that consists of Entisol soil (T1), Inceptisol soil (T2) and Ultisol soil (T3), and the
second factor are the organic matter (K) that consist of rice straw compost (K1), chicken dirt (K2),
cocoa shell compost (K3), and control (K0). The resultof the research showed that different kind of
soil singnificanly influencedthe C-organic soil, and total soil N, and the difference of organic matter
singnificanly influenced the total soil N, plant crowndry weight, N-absorptionof the plant and plant
growth, and the interaction between each different kind of soil with different organic matter
singnificanly influenced the plant crowndry weight.

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Program studi Agroteknologi

Fakultas Pertanian

Jl. Prof. A. Sofyan no. 3

Kampus Universitas Sumatera Utara

Padang Bulan- 20155

Medan-Sumatera Utara

E ISSN (2337-6597)