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

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Pengaruh Pupuk Organik terhadap Serapan Ca dan Mg serta Hasil Kacang Tanah pada Lahan Terdegradasi Sri Hartati; Hery Widijanto
Agrosains : Jurnal Penelitian Agronomi Vol 17, No 1 (2015): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (374.345 KB) | DOI: 10.20961/agsjpa.v17i1.18658

Abstract

Degraded land is the land that has lost a lot of nutrients and soil organic matter. This research is aimed to determine the effect of the kinds of organic fertilizers to Ca and Mg uptake and yield of groundnuts on degraded land. This research was done using Completely Randomized Design (CRD) single factor and three replications for each treatment. The results showed that organic fertilizer influence to Ca and Mg uptake and the yield of groundnut on degraded lands. Eichonia crasspies manure increased Ca and Mg uptake of groundnut on degraded soil. Cow manure fertilizer increased 200% of their groundnut production as compared to without organic fertilizer.
Pengaruh Abu Vulkanik Kelud dan Pupuk Kandang terhadap Ketersediaan dan Serapan Kalium pada Jagung di Tanah Alfisol Suntoro Suntoro; Sudadi Sudadi; Hery Widijanto; Galuh Novikah Widy Utami
Agrosains : Jurnal Penelitian Agronomi Vol 18, No 1 (2016): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (300.75 KB) | DOI: 10.20961/agsjpa.v18i1.18680

Abstract

Kelud volcanic ash has high source of minerals, which is potassium. This study aims to determine the effect and find the best composition of Kelud volcanic ash and manure to the availability and corn uptake of potassium in the Alfisols.This research is expected to provide information on the composition of volcanic ash Kelud and proper manure for agriculture. This research was conducted in the greenhouse, in the Laboratory of Ecology and Management of Crop Production, and soil chemistry laboratory of the Faculty of Agriculture, Sebelas Maret University in June 2014 - January 2015. Research using completely randomized design which consists of two factors, there are the thickness of Kelud volcanic ash which consists of four levels A0 (0 cm), A1 (2 cm), A2 (4 cm), and A3 (6 cm) and the dose of manure were P0 (0 ton/ha), P1 (2,5 ton/ha), and P2 (5 ton/ha). Each combination treatment was repeated 3 times. The data were then analyzed using the F test and continued with Duncan Multiple Range Test Test (DMRT) level of 95%. The results showed that the interaction between the two treatments were no significant different. Availability Potassium gradually decreased with an increase in the dose of volcanic ash Kelud, allegedly because of the low value of the total potassium Kelud volcanic ash. The results of measurements of plant potassium uptake increased with increasing dose Kelud volcanic ash and manure.
Co-Authors Galuh Novikah Widy Utami Sri Hartati Sudadi Sudadi Suntoro Suntoro