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Journal : Journal of Tropical Crop Science

Application of Arbuscular Mycorrhizal Fungi (AMF) to Enhance Biomass of Uncaria gambir (Gambier) in Ex Coal Mining Soil Hervani, Dini; Febjislami, Shalati; Armansyah, Armansyah; Kusumawati, Aries; Lopita, Septy; Rahmad, Rahmad
Journal of Tropical Crop Science Vol. 12 No. 02 (2025): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.12.02.417-425

Abstract

Gambier cultivation faces limitations due to decreasing land availability; however, utilizing ex-coal mining land presents a promising alternative for sustainable expansion. Ex-coal mining land has the problem of low available nutrients because of bonded nutrients. Arbuscular Mycorrhiza Fungi (AMF) can help release bound nutrients into available nutrients, so that on ex-coal mining land, there is an increase in the amount of available nutrients that can be absorbed by plants for their growth. The study aimed to determine the effect of different types of arbuscular mycorrhizal fungi (AMF) and their doses on the biomass of gambier seedlings planted in ex-coal mining soil. An experimental design was employed using a randomized block design with two treatments: the types of arbuscular mycorrhizal fungi (AMF) (Acaulospora sp., Glomus sp., and Gigaspora sp.) and the AMF dosages (0, 5, 10, 15, and 20 g per seedling). All treatments were replicated three times. The parameters observed were soil chemical analysis, root colonization by arbuscular mycorrhizal fungi (AMF), shoot and root fresh and dry weights, net assimilation rate, and relative growth rate. The results obtained showed that AMF type and dose treatment had a significant effect on all parameters, except for the relative growth rate, and there was no interaction between the two treatments. Glomus sp. at a dose of 20 g per seedling provided the best influence in increasing gambier seedlings' biomass under the ex-coal mine soil.
Comparing the Genetic Parameters of Three Rice Varieties on Suboptimal Land Using the SRI Method Rozen, Nalwida; Kasim, Musliar; Dwipa, Indra; Hervani, Dini
Journal of Tropical Crop Science Vol. 9 No. 01 (2022): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.9.01.47-51

Abstract

The conversion of fertile land into industrial areas and construction development has contributed to the decline of rice production in Indonesia. Therefore, it is necessary to expand the rice fields to the sub-optimal land, i.e. lands with high levels of Fe and Al and low soil pH. One of the solutions that can potentially solve the problem is choosing varieties of rice that can adapt to the suboptimal land environment; the rice varieties can be obtained by estimating rice genetic parameters and selecting the optimal planting methods. One method that can potentially improve rice yield is “System of Rice Intensification”, or SRI method. Our study was conducted in the rice fields on suboptimal land at Pasar Ambacang, Kuranji District, Padang, Sumatra, from December 2019 to April 2020. The aims of the experiment are to determine the genetic parameters and responses of the three rice varieties to suboptimal land using the SRI method. A complete randomized design with four replications was used to set up the experiment using three varieties of rice, i.e. “Batang Piaman”, “Bujang Marantau”, and “IPB3S”. Based on the plant growth measurement and analysis of the genetic parameters, we found that the plant growth characters, particularly height and panicles length, had high heritability and genetic progression values.