Pemanfaatan Daun Ketapang (Terminalia catappa L.) sebagai Bioherbisida Gulma Kalamenta (Leersia hexandra L.)

Daun ketapang diketahui mengandung senyawa alelokimia yang dapat menghambat pertumbuhan tanaman lain, sehingga berpotensi sebagai bioherbisida. Penelitian ini bertujuan untuk mengetahui konsentrasi efektif yang dapat menghambat pertumbuhan gulma kalamenta. Penelitian ini menggunakan Rancangan Acak Lengkap dengan 6 perlakuan (K0, K1, P1, P2, P3 dan P4) dan 3 ulangan. Hasil penelitian menunjukan bahwa daun ketapang dengan konsentrasi 10%, 25%, 50% dan 75% berpengaruh nyata terhadap pertumbuhan gulma kalamenta. Konsentrasi ekstrak daun ketapang yang efektif menghambat pertumbuhan gulma kalamenta adalah konsentrasi 50% dan konsentrasi 75%.

Inventarisasi Dan Identifikasi Tumbuhan Air di Danau Hanjalutung Kota Palangka Raya

The aim of this research is to identify and to inventory water plants in Hanjalutung Lake,Petuk Ketimpun Village, Jekan Raya District, Palangka Raya City. This research was conducted from December 2017 to January 2018. Sampling was carried out in 3 (three) stations, namely inlet ,middle and outlet. The tool used for aquatic plants 2 x 2 m transect.The results of research aquatic plants found in the waters of Lake Hanjalutung 7 (seven) types namely Kiambang (Salvinia molesta), gerigit/bite (Leersia hexandra), Cat Tail Grass (Utricularia aurea), Para Grass (Cyperus platystylis), Water Hyacinth ( Eichhornia crassipes ), Kiapu (Pistia stratiotes) dan Ketanan (Polygonum sp).

Nutritional values of swamp grasses as feed for Pampangan Buffaloes in South Sumatra, Indonesia

Muhakka, Suwignyo RA, Budianta D, Yakup. 2020. Nutritional values of swamp grasses as feed for Pampangan Buffaloes in South Sumatra, Indonesia. Biodiversitas 21: 953-961. This study was aimed at determining the types and quality of vegetation in the swamp area, which could be used as sources of roughage for Pampangan buffaloes in South Sumatra. In this descriptive study, Results showed that the highest crude protein and ether extract contents, 20.56 and 2.92%, respectively, were found in (Neptunia oleracea). The highest ash content of 25.19% was found in Cyperus digitatus. The lowest fiber content (11.01%) was found in Ludwigia hyssopifolia, which also had the lowest content of Neutral Detergent Fiber (NDF) (40.64%). Hemicellulose content was found to be highest (37.14%) in Leersia hexandra. The lowest ADF (23.66%) and lignin (14,84%) contents were found in Nymphaea lotus. N. oleracea was found to have the lowest content (27.08%) of cellulose. It was concluded that the swamp vegetation found in this study consisted of 17 species of grasses and herbs (89.47%) and two species of legumes (10.53%). C. digitatus and L. hyssopifolia were found to have the best nutritional values. Dominant and palatable vegetation with good nutritional values, which were potential to be used as sources of roughage for Pampangan buffaloes, were Hymenachne acutigluma, Oryza rufipogon, Hymenachne amplexicaulis, Polygonum barbatum, and Eleocharis dulcis.

Advances in remediation of heavy metal contaminated soil and water by Leersia hexandra Swartz

Heavy metal pollution is extremely harmful to human beings. Looking for an efficient and environmentally friendly treatment method is the focus of current research. Using plants to treat contaminated water and soil has proven to be an effective and environmentally friendly method. Leersia hexandra Swartz is a chromium hyperaccumulator, and it can also enrich copper and nickel. Since the super enrichment characteristics of Leersia hexandra Swartz were discovered, many scholars have poured into the research on Leersia hexandra Swartz. This article will give an overview of the current application status of Leersia hexandra Swartz’s purification of polluted water and soil, analyze the methods and principles used, and discuss the future development direction of Leersia hexandra Swartz’s plant remediation technology.