Journal of Degraded and Mining Lands Management
Vol. 10 No. 4 (2023)

Soil potassium adsorption at several shallot center areas, Brebes Regency, Central Java Province

Arief Hartono (Department of Soil Science and Land Resource, Faculty of Agriculture, IPB University)
Desi Nadalia (Department of Soil Science and Land Resource, Faculty of Agriculture, IPB University)
Bambang Hendro Trisasongko (Department of Soil Science and Land Resource, Faculty of Agriculture, IPB University)

Article Info

Publish Date
01 Jul 2023

Abstract

Brebes Regency, Central Java, is one of Indonesia's most important shallot production center implementing intensive agriculture. In the bulb production, K is needed more than other nutrients. This study aimed to assess and describe the adsorption characteristics of K on the soils of the shallot farming system in Brebes District, Central Java. Soil samples were collected at several locations in the shallot center areas of Brebes Regency, Central Java Province. The observed soil properties included pH H2O, EC, soil texture, organic C, potential-K, exchangeable Ca, Mg, Na, and K, CEC, exchangeable Al and H, and water-soluble K. K adsorption was simulated by the Freundlich equation. The proportion of K from low to high of retention energy in the soil studied had the order, namely water-soluble K<exchangeable K<potential-K. The K adsorption result showed that the soil had a high capacity to adsorb K. It indicated that added K was accumulated in the soil. The high capacity to adsorb K indicated that K accumulated in Brebes with continuous K fertilization. This research recommended that to increase the efficiency of K fertilizer, it is necessary to introduce the technology to mine K in Brebes soils like bacteria capable of dissolving K or biofertilizers.

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Journal Info
Journal of Degraded and Mining Lands Management
Website

Abbrev

jdmlm

Publisher

Universitas Brawijaya

Subject

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

Description

Journal of Degraded and Mining Lands Management is managed by the International Research Centre for the Management of Degraded and Mining Lands (IRC-MEDMIND), research collaboration between Brawijaya University, Mataram University, Massey University, and Institute of Geochemistry, Chinese Academy of ...