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Iwan Gunawan
Jurusan Budidaya Tanaman Pangan Politeknik Negeri Lampung
Agriculture, Biological Sciences & Forestry

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Kajian Peningkatan Peran Azolla Sebagai Pupuk Organik Kaya Nitrogen pada Padi Sawah Iwan Gunawan
Jurnal Penelitian Pertanian Terapan Vol 14 No 2 (2014)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (30.057 KB) | DOI: 10.25181/jppt.v14i2.151

Abstract

The study aims to get an optimum dose of Azolla organic fertilizer that provides maximum growth and yield of rice crops. The experiments are arranged in complettely randomized block design with 5 treatments and 4 replications. The treatments tested were fresh Azolla biomass dose embedded in the ground to accompany the provision of Azolla that left to grow on the surface of the water of the rice fields. Treatments dose of fresh Azolla biomass awere M0 = control (without organic fertilizer Azolla); M1 = 100 g.pot-1 ; M2 = 200 g. pot-1; M3 = 300 g. pot-1 ; and M4 = 400 g. pot-1. The experimental results show that: (1) organic fertilizer Azolla improve the growth and yield of rice paddy fields, and (2) Results of maximum 56.35 grams of dry grain per plant with an optimal dose of organic fertilizer as much as 48.102 ton.ha -1. Keywords: Organic fertilizers, Fresh Azolla, growth, yield, rice paddy.
Substitusi Kebutuhan Nitrogen Tanaman Padi Sawah oleh Tumbuhan Air Azolla (Azolla pinnata) Iwan Gunawan; Raida Kartina
Jurnal Penelitian Pertanian Terapan Vol 12 No 3 (2012)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (35.965 KB) | DOI: 10.25181/jppt.v12i3.214

Abstract

The research aims to study the ability of Azolla pinata in substituting nitrogen requirement of rice plants at a low dose of urea fertilizer. Factorial experiment arranged in randomized complete design (RCD) with four combinations of treatments and 6 replications. The first factor is the dose of urea with 2 dose level, ie, without urea (U0) and 100 kg urea ha-1 (U1). As a second factor is the provision of water plant Azolla pinnata with a degree without Azolla (A0) and Azolla 100 g m-2 (A1). The experimental results show that: (1) water plant azolla increased height, dry weight, productive tillers and dry weight of paddy rice crops, (2) Provision of a Urea increase high, dry weight, productive tillers and grain dry weight of rice plants, and (3) water plants azolla interacts with urea in increasing plant dry weight and grain dry weight of paddy. Keywords: Nitrogen, Rice, Azolla pinnata
Co-Authors Raida Kartina