Panca Dewi Manu Hara Karti
Department of Nutrition Science and Feed Technology, Faculty of Animal Science, Bogor Agricultural University

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Mekanisme Toleransi Aluminium pada Rumput Pakan Setaria splendida Karti, Panca Dewi Manu Hara
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 39, No 2 (2011): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Plant tolerance mechanism to aluminum (Al) toxicity can be studied by comparing the Al-tolerant and Al-sensitive species. Setaria splendida is an Al tolerant forage, while Chloris gayana is a Al sensitive one. This research was aimed to reveal the main Al-tolerant mechanism in S. splendida. The first experiment was arranged in completely randomized design with two factors and two replications to study the organic acid and Al accumulation in the S. splendida and C. gayana. The first factor  was Al concentration (0 and 2 mM Al), while the second factor was Al tolerant (S. splendida) and Al sensitive (C. gayana) species. The second experiment was arranged in completely randomized design with two factors and three replications to study the effect of Al stress on plant growth. The first factor was Al tolerant (S. splendida) and Al sensitive (C. gayana) species, while the second factor was four levels of Al concentration in the growth medium (28.19, 27.37, 13.74, and 0.13 me Al3+). The results showed that the Al accumulation in the root tissue of S. splendida was similar to C. gayana. Although S. splendida accumulated higher Al in the shoots in comparison to C. gayana, they were more tolerant to Al. S. splendida tolerated Al-toxicity by secreting oxalic acids and citric acid from roots to the external solution, and by accumulating oxalic acid and malic acid in their roots and shoots.   Keywords: aluminum, Chloris gayana, organic acid, Setaria splendida, tolerance.  
POTENSI DAN KARAKTERISTIK PRODUKSI Lemna minor PADA BERBAGAI MEDIA TANAM Prihantoro, Iwan; Risnawati, Adisty; Karti, Panca Dewi Manu Hara; Setiana, M. Agus
Pastura : Jurnal Ilmu Tumbuhan Pakan Ternak Vol 4 No 2
Publisher : Udayana University

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Abstract

Lemna minor merupakan jenis tanaman yang hidup dominan pada perairan dengan kualitas nutrisi tinggi dan potensial sebagai sumber hijauan pakan bagi ternak. Penelitian ini bertujuan untuk mengukur potensi Lemna minor dan karakteristiknya pada berbagai media tanam untuk mendapatkan teknik produksi yang optimal. Penelitian dilakukan pada bak plastik dengan ukuran 36.5×27×10 cm3 selama dua minggu. Rancangan yang digunakan adalah Acak Lengkap (RAL) dengan lima perlakuan media dan lima ulangan. Jenis media yang digunakan adalah kontrol, hoagland, hyponex, kompos dan NPK. Parameter yang diukur meliputi serapan nitrogen, pH media, cover area, penyusutan media, dan produksi biomassa. Hasil penelitian menunjukkan bahwa lemna minor efektif dalam memanfaatkan nitrogen dengan nilai serapan > 98 %, media kompos memberikan status pH media yang stabil/netral dan pertambahan luas cover area (LCA) tercepat dan tingkat produksi biomassa Lemna minor terbaik pada media kompos dan Hoagland.
Productivity and Nutrient Quality of Some Sorghum Mutant Lines at Different Cutting Ages Puteri, Rizki Eka; Karti, Panca Dewi Manu Hara; Abdullah, Luki; Supriyanto, .
Media Peternakan - Journal of Animal Science and Technology Vol 38, No 2 (2015): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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The objective of the study was to explore the appropriate cutting age to produce optimal biomass and good nutrient quality from sorghum mutant lines BMR i.e., PATIR 3.5 M7, PATIR 3.6 M7, and PATIR 3.7 M7, also SAMURAI I (M17). A completely randomized in Split Plot design with 2 factors and 3 replicates was used. The first factor was the type of sorghum (SAMURAI I M17, PATIR 3.5, PATIR 3.6, PATIR 3.7) as the main plot and the second factor was the cutting age (85, 95, 105) as a subplot. Parameters observed were the production of stems, leaves, grains, total biomass production, ash, crude fat, crude fiber, crude protein, NFE, TDN, percentage of DMD, OMD and N-NH3. Data were analyzed by using ANOVA followed by DMRT (Duncan Multiple Range Test). The results showed that there were highly significant interactions (P<0.01) between cutting age and type of sorghum in production of stems, leaves, grains, total biomass production, value of TDN, DMD, OMD, and N-NH3. Increasing cutting age significantly increased the percentage of ash content, crude protein and crude fat. The sorghum type significantly affected crude fat content nonBMR sorghum variety of SAMURAI I (M17) and achieved optimal biomass production and nutrient content at cutting age of 85 d similar to BMR sorghum mutant lines PATIR 3.6 and PATIR 3.5, whereas BMR sorghum mutant lines of PATIR 3.7 achieved optimum production at the age of 95 d of cutting. All types of sorghum varieties was not recommended to be harvested at 105 d. Biomass production increased with the increasing of cutting age, but the nutrient content decreased. Key words: cutting age, mutant, sorghum
Productivity and Nutrient Quality of Some Sorghum Mutant Lines at Different Cutting Ages Puteri, Rizki Eka; Karti, Panca Dewi Manu Hara; Abdullah, Luki; Supriyanto, .
Media Peternakan Vol 38, No 2 (2015): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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Abstract

The objective of the study was to explore the appropriate cutting age to produce optimal biomass and good nutrient quality from sorghum mutant lines BMR i.e., PATIR 3.5 M7, PATIR 3.6 M7, and PATIR 3.7 M7, also SAMURAI I (M17). A completely randomized in Split Plot design with 2 factors and 3 replicates was used. The first factor was the type of sorghum (SAMURAI I M17, PATIR 3.5, PATIR 3.6, PATIR 3.7) as the main plot and the second factor was the cutting age (85, 95, 105) as a subplot. Parameters observed were the production of stems, leaves, grains, total biomass production, ash, crude fat, crude fiber, crude protein, NFE, TDN, percentage of DMD, OMD and N-NH3. Data were analyzed by using ANOVA followed by DMRT (Duncan Multiple Range Test). The results showed that there were highly significant interactions (P<0.01) between cutting age and type of sorghum in production of stems, leaves, grains, total biomass production, value of TDN, DMD, OMD, and N-NH3. Increasing cutting age significantly increased the percentage of ash content, crude protein and crude fat. The sorghum type significantly affected crude fat content nonBMR sorghum variety of SAMURAI I (M17) and achieved optimal biomass production and nutrient content at cutting age of 85 d similar to BMR sorghum mutant lines PATIR 3.6 and PATIR 3.5, whereas BMR sorghum mutant lines of PATIR 3.7 achieved optimum production at the age of 95 d of cutting. All types of sorghum varieties was not recommended to be harvested at 105 d. Biomass production increased with the increasing of cutting age, but the nutrient content decreased.Key words: cutting age, mutant, sorghum