Effectiveness of Direct Application of Phosphate Rock in Upland Acid Inceptisols Soils on Available-P and Maize Yield

Dedi Nursyamsi

doi:10.5400/jts.2013.18.1.1

Abstract

Effectiveness of Direct Application of Phosphate Rock in Upland Acid Inceptisols Soils on Available-P and Maize Yield

Highlights

Tidal lowland development at South Sumatra has been conducted by government since 1969 through transmigration program, but the Bugis farmers had previously developed this area since 1930s
About 40% rice production at South Sumatra is currently produced from lowland areas and about 60% of this rice production was supplied from reclaimed tidal lowland areas (Dinas TPH Provinsi Sumatera Selatan 2006)
In order to establish the above conditions, water management operation is geared toward aspects of water table retention that is always located above pyrites layer and land leaching through a controlled drainage systems (Johnstona et al 2005)

Summary

Introduction

Tidal lowland development at South Sumatra has been conducted by government since 1969 through transmigration program, but the Bugis farmers had previously developed this area since 1930s. Tidal lowland areas in South Sumatra are located along eastern coast of Sumatra and approximately covered 2.92 million ha (Euroconsult 1995). Total area of tidal lowland in South Sumatra that had been reclaimed was 373,000 ha. According to Saragih et al (1996), water management is one of important factor for land management at tidal lowland area. This management is to reduce or to add surface water availability, and to reduce soil acidity, to minimize land acidity due to pyrites layer oxidation, to minimize salinity hazards and flooding risks, as well as to reduce toxic chemical compounds as a result of pyrite layer oxidation. In order to establish the above conditions, water management operation is geared toward aspects of water table retention that is always located above pyrites layer and land leaching through a controlled drainage systems (Johnstona et al 2005)

Methods

Results

Conclusion