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All Journal Journal of Tropical Soils Jurnal Ilmu-Ilmu Pertanian Indonesia TERRA : Journal of Land Restoration
Riwandi Riwandi
University of Bengkulu
Agriculture, Biological Sciences & Forestry Environmental Science

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Soil Quality Engineering Using Vermicompost and its Effect on the Corn (Zea mays L.) Production in Coastal Area Riwandi Riwandi; Hasanudin Hasanudin; Herry Gusmara; Anandyawati Anandyawati
JOURNAL OF TROPICAL SOILS Vol 25, No 3: September 2020
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2020.v25i3.127-135

Abstract

The low quality of Entisol is caused by low availability of nitrogen, phosphorus, and potassium as well as low soil pH, so the addition of vermicompost is necessary. The purpose of this study was to determine the effect of vermicompost application on soil quality and to obtain the highest vermicompost dosage on the availability of nutrients such as N, P, K, and the yield of corn. The field experiment used a Randomized Completely Block Design (RCBD) with 7 dosages of vermicompost and three replications. The treatments were V0 = 0; V1 = 5; V2 = 10; V3 = 15; V4 = 20; V5 = 25; V6 = 30 Mg ha-1. Variables observed consisted of 1) initial soil and vermicompost characterization analysis, 2) soil analysis and N, P, and K content in leaves, and yield of corn. The results showed that Entisol was classified as low quality; however, vermicompost quality complied with the requirements of quality organic fertilizer. The experiment also indicated that the highest pH of Entisol (5.31) and K content in corn leaves (2.12%) were obtained at a dose of vermicompost 25 Mg ha-1. Meanwhile, the highest weight of husked corn cobs (415.55 g plant-1) and weight of unhusked corn cob (351.11 g plant-1) were obtained at a vermicompost dose of 15 Mg ha-1.
PERUBAHAN SIFAT KIMIA TANAH DAN HASIL JAGUNG PADA INSEPTISOL DENGAN PEMBERIAN KOMPOS Halasan Halasan; Anandyawati Anandyawati; Hasanudin Hasanudin; Riwandi Riwandi
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 20, No 2 (2018)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.20.2.33-39

Abstract

[CHANGE IN SOIL CHEMICAL CHARACTERISTICS AND YIELD OF MAIZE IN AN INCEPTISOL AS AMENDED WITH COMPOST]. Vast area of inceptisol in Indonesia is a potential natural resource for improving the domestic maize production. The amendment of organic material is expected to make correction on the fertility problem inherent in the soil. Objective of this study was to determine the optimum dose of compost for some soil chemical properties and maize performances. The doses of compost consisted of 0, 2.5, 5, 7.5, 10, and 12.5 ton/haa were allotted randomly on the experimental plots according to completely randomized design with three replications. Observations were made on  the exchangeable Aluminum (Al-dd), pH, organic carbon, water content, plant height, unhusked and husked ear weight, and grain yield. Analysis of variance showed that the dose of compost had significant (P?0.05) effects on pH and C-organic in soil. Giving compost at a dose about 12.5 ton/ha could increase the pH about 4.9, whereas giving compost at a dose about 10 tonha-1 could increase C-organic about 3.09 %. In other hand, the giving of compost with various dose did not give significantly (P>0.05) affect towards  Aluminium (Al-dd), pH, C-organic, water content, height of plants, weight of without husk, weight of cob with husk, weight of dry corn beans. The highest grain yield (2,415.75 kg/ha) was observed on compost applied at  dose  12.5 ton/ha.
Effect of Vermicompost Dose to K Content in Leaves and Growth of Corn (Zea mays, L) on Ultisol Nunung Nurjanah; Riwandi Riwandi; Hasanudin Hasanudin
TERRA : Journal of Land Restoration Vol 3, No 2 (2020)
Publisher : Department of Soil Science, Faculty of Agriculture, University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.3.2.45-50

Abstract

The objectives of this research were to obtain an optimum dose of vermicompost fertilizer to the nutrient levels of K in the leaves, K uptake, and corn growth in ultisols. This research were held in September until November 2018, which has been implemented in green house and  the Laboratory of Soil Science, Faculty of Agriculture, University of Bengkulu. The research used   Completely Randomized Design (CRD) with a single factor consisting of 7 levels of treatment and three replicates  i.e.  0 , 2.5 , 5.0 , 7.5 , 10.0, 12.5, and 15.0 ton ha-1. The results showed that the optimum dose of vermicompost fertilizer 5.71 ton ha-1, resulting in leave K content of 0.59%,  9.5 ton vermicompost ha-1, producing  the absorption of K leaves 31 kg ha-1,   9.59 ton vermicompost ha-1, producing a plant height 160.7 cm,   10.2 ton vermicompost ha-1, producing the fresh stover weight 27,561.2 kg ha-1, 98.9 ton vermicompost ha-1, producing the dry stover weight 5,675.5 kg ha-1, and 9.5 tons vermicompost ha-1, producing root dry weight  1,156 kg ha-1. 
Co-Authors Anandyawati Anandyawati Anandyawati Anandyawati Halasan Halasan Hasanudin Hasanudin Hasanudin Hasanudin Herry Gusmara Nunung Nurjanah