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Sarno, .
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Agriculture, Biological Sciences & Forestry Environmental Science

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Pengaruh Kombinasi NPK dan Pupuk Kandang terhadap Sifat Tanah dan Pertumbuhan serta Produksi Tanaman Caisim Sarno, .
JOURNAL OF TROPICAL SOILS Vol. 14 No. 3: September 2009
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2009.v14i3.211-219

Abstract

The study was conducted in Keputran village, Tanggamus District, Lampung Province.  The aim of this study to find out a proper combination of NPK fertilizer and chicken manure for the vegetable crops, especially chinese mustard (Brassica campetris Var. Chinensis L.) in order to increase the production.   A randomized complete block design was used in this experiment with ten treatments and three replications. The result showed that the application of chicken manure with the dosage of less than 5 Mg ha-1 was combined with NPK fertilizer did not effective to affect the increasing of growth and production of chinese mustard. Meanwhile application of chicken manure more than 5 Mg ha-1 was combined with NPK fertilizer significantly affected the growth, production of chinese mustard and soil properties i.e. C-total, total-N, P available, exchangeable K, and humic and fulvic acid. The application of chicken manure effective to reduce NPK fertilizer need.  The best yield was found in using 50% of NPK fertilizer to dosage recommendation and 50% application of chicken manure to dosage 20 Mg ha-1.
Potency of Agroindustrial Wastewaters for Increasing Dissolution of Phosphate Rock Fertilizers Niswati, Ainin; Yusnaini, Sri; Sarno, .
JOURNAL OF TROPICAL SOILS Vol. 19 No. 1: January 2014
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2014.v19i1.43-51

Abstract

Agroindustrial wastewaters were considered not maximum used in Lampung Province since it has acidic properties that can be used as an acid solvent. This study aimed was to explore the most potential agroindustrial wastewaters in dissolving phosphate rock by acidulation in the laboratory scale. The experimen were arranged by factorial i.e. first factor were phosphate rock origin (Sukabumi, west Java and Selagailingga, central Lampung) and second factor was kinds of solvent (agroindustrial wastewaters of pineapple, tapioca, tofu industry, and palm oil as well as a conventional acid solvent such as HCl, H2SO4, and CH3COOH).  The incubation process were 0, 1, 2, and 3 month. The results showed that agroindustrial wastewaters that have highest potency for solubizing phosphate rock was industrial tofu wastewaters and followed by industrial wastewaters of tapioca, palm oil, and pineapple. Both the conventional  acid  and  agroindustrial  wastewaters    solvent  have  a  big  potency  for  solubilize  phosphate  rock, however, its highest soluble P-value was not match with the ISO criteria for phosphate fertilizers Quality I (SNI) because it has not reached the solubility of 80% of its total P2O5, but has been qualified as a fertilizer both the quality phosphate A, B, and C (SNI).Keywords: Acidulation, agroindustrial wastewater, P fertilizer, phosphate rock [How to Cite: Ainin N, S Yusnaini and Sarno. 2014. Potency of Agroindustrial Wastewaters to Increase the Dissolution of Phosphate Rock Fertilizers. J Trop Soils 19: 43-51. Doi: 10.5400/jts.2014.19.1.43]    
Co-Authors Ainin Niswati, Ainin Sri Yusnaini