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All Journal SAINS TANAH - Journal of Soil Science and Agroclimatology
Slamet Minardi
Department of Soil Science, Faculty of Agriculture, Sebelas Maret University, Surakarta, Central Java
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Adding manure and zeolite to improve soil chemical properties and increase soybean yield Slamet Minardi; Isna Luthfa Haniati; Alif Husna Lantip Nastiti
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 17, No 1 (2020): June
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (863.921 KB) | DOI: 10.20961/stjssa.v17i1.41087

Abstract

Increasing domestic soybean production is an important part of the effort to reduce reliance on imports. One potential area for improvement is developing soybean crops in Alfisols. Alfisols require intensive effort due to their poor soil chemical properties. Manure and zeolite were proposed as candidate materials that could be used to improve soil chemical properties to support plant growth and increase the productivity of cultivated land. The experiment was designed to study the addition of manure and zeolite on soil chemical properties of Alfisols and soybean yield. The experimental design was arranged in a factorial completely randomized block design with two factors—three rates of zeolite (Z0 = 0 t ha-1, Z1 = 2.5 t ha-1 and Z2 = 5 t ha-1) and three manure variables (P0 = no manure, P1 = 5 t ha-1 cow manure, and P2 = 5 t ha-1  quail manure)—with three replications. The results showed that a combination of 5 t ha-1 zeolite and cow manure increased soybean yield. However, zeolite 5 t ha-1 resulted in the greatest improvement in soil chemical properties—the highest CEC, soil organic matter percentage, and pH.
Predicting peatland groundwater table and soil moisture dynamics affected by drainage level Bambang Widiarso; Slamet Minardi; Komariah Komariah; Tino Orciny Chandra; Mohamed Abdesalam Elmahdi; Masateru Senge
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 17, No 1 (2020): June
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1135.609 KB) | DOI: 10.20961/stjssa.v17i1.38459

Abstract

Excessive drainage of peatlands can cause subsidence and irreversible drying; therefore, it is necessary to predict groundwater levels in peatlands to ensure adequate water for crops and control excessive water loss simultaneously. This study aimed to predict the peatland groundwater level and soil moisture affected by drainage. This research was conducted in a peatland located in Rasau Jaya Umum, Kubu Raya Regency, West Kalimantan Province, Indonesia from February to December 2016. Three treatments of drainage setting were established with maize cropping: without drainage (P0) and drainage channel with water level maintained at depths of 30 cm (P1) and 60 cm (P2) from the soil surface. The results indicated that a polynomial regression model is a good approach to predicting groundwater table level and soil moisture in peatlands, with R2 values ranging 0.71-0.96 and 0.65-0.93, respectively. For agricultural purposes, maintaining the water level at 30 cm from the soil surface in the drainage channel appears to be the ideal level as adequate soil moisture is provided for annual cash crops and drying is prevented simultaneously.
Co-Authors Alif Husna Lantip Nastiti Bambang Widiarso Isna Luthfa Haniati Komariah Komariah Masateru Senge Mohamed Abdesalam Elmahdi Tino Orciny Chandra