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All Journal Agrosains: Jurnal Penelitian Agronomi
Hery Widjianto
Department of Agrotechnology, Faculty of Agriculture, Universitas Sebelas Maret
Agriculture, Biological Sciences & Forestry

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Ketersediaan dan Serapan Mg Kacang Tanah Alfisol dengan Abu Vulkanik Kelud dan Pupuk Organik Amandemen Suntoro Suntoro; Hery Widjianto; Tutik Handayani
Agrosains : Jurnal Penelitian Agronomi Vol 19, No 1 (2017): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (208.072 KB) | DOI: 10.20961/agsjpa.v19i1.20920

Abstract

As a result of volcanic eruptions led to the fall of the ash, but there is no much research conducted against nutrient content and the nutrient availability in soil. Disposals of volcanic ash and organic matter are expected fill Mg need in the land. Magnesium In Alfisol is still  sufficientless for peanuts. The purpose of this research is study of the impact of volcanic ash and organic fertilizer for the availability and uptake of peanuts Mg  in the Alfisol. The experiments did  in a greenhouse used completely randomized design with one factor. Data were analyzed with F test rate from 95%, and if the  treatments showed significant influenced were continued with rate duncan's multiple range test fence from 95%. The observed variables include the levels of chlorophyll, available Mg and uptake Mg. Research results show that the interaction from treatment chlorophyll content, available Mg and uptake  Mg. Based on the findings of the observations of volcanic ash disposals operating significantly impact the availability of magnesium.
Pemberian Pupuk Alam Terhadap Serapan Nitrogen dan Hasil Sawi di Alfisols Sumarno Sumarno; Hery Widjianto; Rosinta Kusuma W
Agrosains : Jurnal Penelitian Agronomi Vol 19, No 2 (2017): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (229.705 KB) | DOI: 10.20961/agsjpa.v19i2.20910

Abstract

This research conducted to determine the exact formula and dosage to increase the uptake of N and increase yield of green mustard. The research conducted at Jumantono dryland research center, Karanganyar and Laboratory  of Chemistry and Soil Fertility, Faculty of Agriculture UNS Solo. This study uses a randomized complete block design (RCBD) using 5 formulas as the first treatment factor and 4 dosages as second treatment factor. The data analysis used F test level of 5% and if significant continued by DMRT (Duncan Multiple Range Test) level of 5%. The variables of this research were weight of wet stover, weight of dry stover, N total and absorption of N. The results showed that the combination of dosage and formula of natural fertilizers can increase N uptake and yield of mustard on the ground Alfisols.
Co-Authors Rosinta Kusuma W Sumarno Sumarno Suntoro Suntoro Tutik Handayani