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All Journal Jurnal Ilmu Ternak Veteriner Animal Production : Indonesian Journal of Animal Production
PDMH Karti
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Veterinary

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Productivity of duckweed (Lemna minor) as alternative forage feed for livestock in different light intensities Nopriani, Uti; Karti, PDMH; Prihantoro, Iwan
Indonesian Journal of Animal and Veterinary Sciences Vol 19, No 4 (2014)
Publisher : Indonesian Animal Sciences Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (567.212 KB) | DOI: 10.14334/jitv.v19i4.1095

Abstract

Duckweed (Lemna minor) is a small aquatic plant that grow and float in water and spread extensively. Lemna minor is potential as a source of high quality forage. This study aimed to determine optimal light intensity on Lemna minor to generate maximum productivity. Parameters observed were physical-biological and chemical characteristics of the media (pH value, temperature, cover area, decreased of media volume, BOD, COD, nitrate, nitrite and phosphate), plant growth acceleration (number of shoots, leaf diameter and chlorophyll-a), biomass production, doubling time of cover area and the number of daughters. This study was done based on a completely randomized design with 4 levels of shading. While treatment was: without shading, shading 30%, shading 50% and shading 70% using paranet shade. Each treatment consisted of 4 replications. Result showed that the productivity of Lemna minor included the number of daughters, chlorophyll-a, biomass production, cover area, absorbed phosphate and doubling time the number of daughters reached the highest level without shading treatment (1007,21-2813,57 lux). The decrease of intensity of light, the increase the diameter of leaf. Decrease of media volume was positively correlated to size of cover area. Biomass production influenced by a wide doubling time of cover area and number of daughters. Key Words: Lemna minor, Light Intensity, Media, Productivity
Isolation and Effect of Al-Tolerant Phosphate Solubilizing Microorganism for Production and Phosphate Absorption of Grasses and Phosphour Dissolution Mechanism Karti, PDMH; Yahya, S; Sopandie, D; Hardjosuwignyo, S; Yadi, S
ANIMAL PRODUCTION Vol 14, No 1 (2012): January
Publisher : Universitas Jenderal Soedirman, Faculty of Animal Science, Purwokerto-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (468.934 KB)

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Abstract. The objective of this research was to study the isolation and effect of Al-tolerant phosphate solubilizing microorganisms to growth, production of grasses and phosphate dissolution mechanism. The planting materials used were S. splendida and C. gayana pols. The treatment consisted of four selected isolates, namely Po = without phosphate solubilizing bacteria(PSB), P1 = RJM.30.2, P2 = FT.3.2, P3 = FT.3.4, P4 = B8016495, P5 = B8016498, P6 = the mixture from four isolates P2-P5. Observed variables were pH, shoot and root dry weight, and P absorption.  The best phosphate solubilizing microorganism on acid soil were FP.3.2, FP.3.3, B8016495 and B8016498. Phosphate solubilizing microorganism could not yet increase shoot and root dry weight production on grasses S. splendida and C. gayana, but had shown increasing P shoot and root content and  P uptake. On grass S. splendida the best isolate to increase P shoot and root of shoot and root, organic acid. The best phosphate solubilizing microorganism on acid soil content and P uptake was FT.3.3.  On grass C gayana the best isolate to increase P shoot and root content and P uptake were RJM.30.2. and FT.3.3.  Organic acid exudated by FT.3.3. were oxalic  and acetic acid as phosphate dissolution mechanism. Keywords: phosphate solubilizing microorganism, acid soil, forage grasses, Setaria splendida, Chloris gayanaAnimal Production 14(1):13-22, January 2012
Productivity of duckweed (Lemna minor) as alternative forage feed for livestock in different light intensities Uti Nopriani; PDMH Karti; Iwan Prihantoro
Jurnal Ilmu Ternak dan Veteriner Vol 19, No 4 (2014): DECEMBER 2014
Publisher : Indonesian Center for Animal Research and Development (ICARD)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (567.212 KB) | DOI: 10.14334/jitv.v19i4.1095

Abstract

Duckweed (Lemna minor) is a small aquatic plant that grow and float in water and spread extensively. Lemna minor is potential as a source of high quality forage. This study aimed to determine optimal light intensity on Lemna minor to generate maximum productivity. Parameters observed were physical-biological and chemical characteristics of the media (pH value, temperature, cover area, decreased of media volume, BOD, COD, nitrate, nitrite and phosphate), plant growth acceleration (number of shoots, leaf diameter and chlorophyll-a), biomass production, doubling time of cover area and the number of daughters. This study was done based on a completely randomized design with 4 levels of shading. While treatment was: without shading, shading 30%, shading 50% and shading 70% using paranet shade. Each treatment consisted of 4 replications. Result showed that the productivity of Lemna minor included the number of daughters, chlorophyll-a, biomass production, cover area, absorbed phosphate and doubling time the number of daughters reached the highest level without shading treatment (1007,21-2813,57 lux). The decrease of intensity of light, the increase the diameter of leaf. Decrease of media volume was positively correlated to size of cover area. Biomass production influenced by a wide doubling time of cover area and number of daughters.
Co-Authors D Sopandie Iwan Prihantoro Iwan Prihantoro S Hardjosuwignyo, S S Yadi, S S YAHYA Uti Nopriani