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All Journal TERRA : Journal of Land Restoration
Riwandi
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Agriculture, Biological Sciences & Forestry

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The Effects of Vermicompost on Carbon and Nitrogen Availability, C/N ratio and Corn Production Planted in Entisol Coastal Areas Rezeki, Eksa Tri; Bertham, Yudhy Harini; Hasanudin, Hasanudin; Riwandi; Utami, Kartika
TERRA : Journal of Land Restoration Vol. 6 No. 1 (2023)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.6.1.27-32

Abstract

Entisols are soils that are widely used in Indonesia, both for irrigated and rainfed rice fields, for vegetable cultivation, and others. Vermicompost also contains many of the nutrients available to plants and increases soil porosity, soil aeration, and humidity, and controls soil erosion so that it can help in buffering toxins for plants and promoting plant growth. Corn is a cereal crop that is the second most important food crop in Indonesia besides rice. The volume of corn imports is higher than exports, this is due to the high demand for corn but domestic corn production has not been able to fulfill it. The experimental design used was a Randomized Completely Block Design (RCBD), seven levels of vermicompost doses, namely 0; 2.5; 5.0; 7.5; 10; 12.5; and 15 tons ha-1) each repeated 4 times. This study aims to determine the dose of vermicompost fertilizer that can improve the properties of Entisols and yields of maize (Zea mays L.). The application of vermicompost fertilizer with seven dose levels had a significant effect on N nutrient levels in coastal Entisols. Doses of vermicompost were able to increase dry stover weight, cob weight with husk, and cob weight without husk of corn plants.
Enhancing Leaf Potassium and Corn Yield in Degraded Ultisols with Vermicompost Fertilizer Sanjaya, Rina; Riwandi; Hasanudin
TERRA : Journal of Land Restoration Vol. 6 No. 2 (2023)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.6.2.89-93

Abstract

The study addresses the constraints of Ultisols and underscores the need for vermicompost fertilizer application. The primary objective is to assess whether augmenting the quantity of vermicompost fertilizer enhances potassium (K) levels in leaves and subsequently boosts corn yields. The research spanned from June to December 2022 in Sri Kuncoro Village, Pondok Kelapa District, Central Bengkulu Regency. Employing a Randomized Complete Block Design (RCBD) with 5 treatment levels and 5 replications resulted in 25 plots, encompassing doses of 0, 7.5, 13, 22.5, and 30 tons per hectare. Upon analyzing the data, it is evident that applying vermicompost fertilizer at a rate of 30 tons per hectare leads to a 1.4093% increase in leaf K levels, a K uptake of 3.2035 g tons-1, and a dry stover weight of 232.351 g tons-1. However, there is no  significant evidence indicating an increase in root dry weight, shoot dry weight, cob weight without husk, and dry shell weight
Co-Authors Hasanudin Hasanudin Hasanudin Rezeki, Eksa Tri Sanjaya, Rina Utami, Kartika Yudhy Harini Bertham, Yudhy Harini