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PENGARUH PENGOLAHAN TANAH DAN PEMBERIAN MULSA ORGANIK TERHADAP PERUBAHAN BEBERAPA SIFAT KIMIA TANAH PSAMMENT DAN HASIL JAGUNG MANIS (Zea mays Saccharata Sturt) Ruhaimah Ruhaimah; Herviyanti Herviyanti; Adrinal Adrinal; Giska Oktabriana
Jurnal Solum Vol 7, No 2 (2010): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (41.8 KB) | DOI: 10.25077/js.7.2.124-130.2010

Abstract

A research about effect of soil managment and organic mulch application on soil physical properties of psamment and conr production was conducted in Korong Muaro, Nagari Sunur Kecamatan Nan Sabaris Kabupaten Padang Pariaman, as well as in soil laboratory, Agriculture Faculty, Andalas University Padang.  This research was done from April – October 2009.  The objective of the research was to identify interaction effect between soil cultivation and organic mulch application on chemical properties of psamment and production of sweet corn.  This research was designed in two factors: 3 x 4 with three replications. The first factor was soil cultivation which consisted of 3 levels (Po = No-till, P1 = Minimum tillage, P2 = Conventional till).  The second factor was organic mulch application, which consisted of four levels: Z = without mulch addition, T = Titonia for 8 ton DW/ha, K = Chromolaena for 8 ton DW/ha, J = straw 8 ton DW/ha. The result showed that soil cultivation combined with rice straw mulch application could increase N, P, K elements in soil.  Soil N content increased from 0,17 % to  0,28 %, avail-P from 52,57 ppm to 88,60 ppm, and K-exch from 0,64 me/100g to 2,35 me/100g, however, minimum tillage gave the highest yield which was 7,68 ton weight  of corn seeds + the stalk /hektar, and rice straw mulch showed the highest among the organic mulch applied, which was 8,85 ton/ha.Keywords: Soil cultivation, organic mulch, psamment, sweet corn
TINGKAT KERACUNAN BESI DALAM BENTUK FERRO DAN FERRI SERTA PERTUMBUHAN TANAMAN PADI (Oryza sativa.L) PADA MEDIA PASIR Mimien Hariyanti; Herviyanti Herviyanti; Hermasah Hermansah
Jurnal Solum Vol 1, No 2 (2004): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (142.51 KB) | DOI: 10.25077/js.1.2.74-83.2004

Abstract

The Recent ricefield on marginal land such as Ultisol and Oxisol has low productivity due to Fe-toxicity for rice plant (Oryza sativa.L). Flooded ricefield has reduced Ferri (Fe3+) form into Ferro (Fe2+) from which is easy to dissolve and can be toxic for plant growth. This research was aimed to determine Fe concentration that causes toxic for rice growth on sand medium either under flooded or unflooded condition. Iron was applied in form of FeSO4 at 10 levels (0, 2, 4, 8, 16, 32, 64, 128, 256, 512 ppm). Based on laboratory analyses and visual symptoms, it was found that Fe toxicity was started at Fe concentration 128 ppm. Form of Fe which is toxic to this rice plant was ferro (Fe2+) because this form is active in plant metabolism. Fe concentration at 128 ppm both conditions had shown reddish brown spot on the whole plant, therefore growth and development of plants either above or below soil surface was limited or stressed. Keywords: recent ricefield, Fe toxicity, Ferro and Ferri, brownish symptom
PENGUATAN KELEMBAGAAN PETANI BARAMBAN DALAM PEMASARAN SAYUR SEHAT BERSERTIFIKAT PRIMA 3 DI KECAMATAN BANUHAMPU KABUPATEN AGAM, SUMATERA BARAT Melinda Noer; Herviyanti Herviyanti; Trimurti Habazar; Cesar Welya Refdi
Jurnal Hilirisasi IPTEKS Vol 4 No 2 (2021)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v4i2.497

Abstract

The Baramban Farmers Group, since 2014, has been carrying out healthy vegetable farming with vegetable products that have been certified Prima 3. However, until now, the management of healthy vegetable farming by the Baramban Farmers Group in Banuhampu District, Agam Regency has not experienced much development in farming because it has not created a broad market with prices that favor the welfare of farmers. Strengthening farmer institutions in marketing healthy vegetables is thus very important and have become an essential element in developing healthy vegetable agribusiness in local, national, and even global markets. The method used is counseling, coaching and mentoring. This service activity is planned to be carried out over the next five years, starting with building a cooperation agreement with the Baramban farmer group starting in 2020. Several alternative solutions to solve the problems of healthy vegetable farmer group partners proposed and agreed upon by the Baramban Farmer Group are: a. Carry out mentoring activities for healthy vegetable farmers by transferring resources from universities through integrated science an agribusiness perspective, b, empowering farmers based on group institutional strengthening to build collective action that is independent of farmers to drive healthy vegetable markets, c. Facilitate farmers to create healthy vegetable market segments through modern markets and online markets with information technology 4.0 and 4. Building partnerships with Transmart as a modern market on a national scale and has a global-scale marketing network. The conclusion is that farmer groups are willing to become partners of the Community Service Team in a community partnership program scheme to help businesses develop.
The Controling of Iron (Fe) Toxicity with Humic Matter from Rice Straw Compost and Water Management to Increasing Productivity Established Rice Field at Sitiung, West Sumatra Herviyanti Herviyanti; T. Budi Prasetyo; F. AHMAD; M. Harianti
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 34 (2011): Desember 2011
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n34.2011.40-47

Abstract

This experiment is held to sudy the potency of humic matter extracted from composted rice straw, combined with the various water management systems, in controlling the iron (Fe) toxicity in new-established rice field. The objective of this research is to get break through technology of controlling the iron toxicity in new-established rice field using the the humic substances and water management systems in order to get the optimum yield. This experiment uses a split-plot design with main plots are having three water management systems : continuous flooding; one week flooding and two weeks in field capacity; and two weeks flooding and two weeks in field capacity and sub-plots are having three levels of humic matter application : no humic matter; with 150 ppm humic matter = 300 kg ha-1; and with 300 ppm humic matter = 600 kg ha-1. The result shows that the application of humic matter extracted from composted rice straw decreases the Fe2+ concentration to be 135.67 ppm and 222.33 ppm in all three water management systems after eight weeks flooding. The best treatment combination is the plot with 600 kg ha-1 humic matter and 1 week flooding-2 weeks in field capacity, for it decreases Fe2+ concentration from 694 ppm down to 310 ppm, and the dry weight of grain is 1,819.7 g plot-1 (1 plot = 6 m2) or raising 770.8 g plot-1 compared with those plots with no humic matter and with continuous flooding.