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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Prosiding Seminar Biologi JURNAL BIOLOGI INDONESIA Proceeding Biology Education Conference
Agung Sri Darmayanti
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Materials Science & Nanotechnology Medicine & Pharmacology Public Health

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Perubahan Persentase Unsur Hara Serasah Akibat Proses Dekomposisi Pada Empat Spesies Tanaman Gugur Daun di Kebun Raya Purwodadi Darmayanti, Agung Sri; Rindyastuti, Ridesti
JURNAL BIOLOGI INDONESIA Vol 8, No 1 (2012): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v8i1.3065

Abstract

Percentage changes of litter nutrient due to decomposition process of four deciduous plant species in Purwodadi Botanic Garden. The nutrient release pattern of plant litter is different among species. Decomposition and nutrition release of organic material was observed in four species Swietenia macrophylla, Lagerstroemia speciosa, Ficus benjamina and Kigelia Africana in Purwodadi Botanic Garden. Litter mass was measured and chemical compositionwas analized including poliphenol, celulose, lignin, carbon (C), Nitrogen (N), C/N ratio, phospor (P), and Kalium (K) during 3 months. Litterbag method was applied in this research. Freshlitters were brought into bag and placed in the forest floor. Litterbag and litter chemical monitoring was established once a week. The research result showed that C ratio of four species in early phase increase then decrease in late phase of incubation and significantlydifferent from initial phase except in F. benjamina. N ratio decreased in first month and increases until late phase of incubation. C/N ratio increase in early phase then significantly decreasesuntil 3 months incubation. P ratio tends to decrease in first and third month. Ratio of polyphenol and Lignin decreases, however celluloses increase. The litter of four species has low chemical quality, respectively have low C/N ratio (< 25 %), lignin < 15 %, poliphenol < 3 % and (L+Pp)/ N > 8 %. Consequently, the litter tends to immobilize than mineralize. It effected to high ratio ofN such in L. speciosa. Decreasing and releasing of N in K. Africana showed that its nutrient transfer is better than in other species. P ratio quickly decreases in first 4 weeks of decomposition, it showed that P is not a limiting factors in species decomposition, relatively.Keywords : Litter, decomposition, percentage changes, nutrient
INFILTRASI DAN LIMPASAN PERMUKAAN PADA POLA TANAM AGROFORESTRI DAN MONOKULTUR : STUDI DI DESA JERU KABUPATEN MALANG Darmayanti, Agung Sri; Solikin, Solikin
Prosiding Seminar Biologi Vol 10, No 3 (2013): Seminar Nasional X Pendidikan Biologi
Publisher : Prodi Pendidikan Biologi FKIP UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (397.419 KB)

Abstract

The  research  aims to determine  rate of water  infiltration and   soil run off  on agroforestry,  parennial  and annual  monoculture  cropping systems was conducted at  Jeru village Malang Refency. The water  infiltration rate was measured  by infiltrometer  and the soil  run off  was measured  simple ranfall simulator to make run off  on the soil.  The run off water and  soil  flowing  was   sheltered  into  a  glass   and   then weighing the dry mass of the soil.  Parameters observed  were plant species, trees architectures model, the amount of litter in the land. The results   showed  that  the  highest  water  infiltration rate  and  the lowest  soil run off  was  on multiculture agroforestry each 63,5 cm.h-1 and 0,3 g.lt-1  whereas  the  lowest  water infiltration  and  the highest  soil run off  was on  perennial  trees monoculture  cropping  system  each 30  h-1 and  2,9 g.lt-1 . The multiculture agroforestry  was  dominated by ?waru  gunung? (Hibiscus macrophyllus), ?mindi? (Melia azedarach), ?mahoni? (Sweitenia macrophylla), bamboes and cassava (Manihot esculenta)  that have different  tree architecture  models.  The diversity of  the tree species also  caused   varying litters  produced.  Key Word : infiltration, run off, architecture, litter
PERUBAHAN PERSENTASE UNSUR HARA SERASAH AKIBAT PROSES DEKOMPOSISI PADA EMPAT SPESIES TANAMAN GUGUR DAUN DI KEBUN RAYA PURWODADI Darmayanti, Agung Sri; Rindyastuti, Ridesti
JURNAL BIOLOGI INDONESIA Vol 8, No 1 (2012): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v8i1.3065

Abstract

Percentage changes of litter nutrient due to decomposition process of four deciduous plant species in Purwodadi Botanic Garden. The nutrient release pattern of plant litter is different among species. Decomposition and nutrition release of organic material was observed in four species Swietenia macrophylla, Lagerstroemia speciosa, Ficus benjamina and Kigelia Africana in Purwodadi Botanic Garden. Litter mass was measured and chemical compositionwas analized including poliphenol, celulose, lignin, carbon (C), Nitrogen (N), C/N ratio, phospor (P), and Kalium (K) during 3 months. Litterbag method was applied in this research. Freshlitters were brought into bag and placed in the forest floor. Litterbag and litter chemical monitoring was established once a week. The research result showed that C ratio of four species in early phase increase then decrease in late phase of incubation and significantlydifferent from initial phase except in F. benjamina. N ratio decreased in first month and increases until late phase of incubation. C/N ratio increase in early phase then significantly decreasesuntil 3 months incubation. P ratio tends to decrease in first and third month. Ratio of polyphenol and Lignin decreases, however celluloses increase. The litter of four species has low chemical quality, respectively have low C/N ratio (< 25 %), lignin < 15 %, poliphenol < 3 % and (L+Pp)/ N > 8 %. Consequently, the litter tends to immobilize than mineralize. It effected to high ratio ofN such in L. speciosa. Decreasing and releasing of N in K. Africana showed that its nutrient transfer is better than in other species. P ratio quickly decreases in first 4 weeks of decomposition, it showed that P is not a limiting factors in species decomposition, relatively.Keywords : Litter, decomposition, percentage changes, nutrient
The Canopy Structure and Its Impact on Hydrological Performance of Five Local Trees Species Grown in the Purwodadi Botanic Garden Darmayanti, Agung Sri; Fiqa, Abban Putri
Journal of Tropical Life Science Vol 7, No 1 (2017)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.07.01.07

Abstract

The hydrological performance of individual tree can be estimated by measuring the stem flow, throughfall and rainfall interception. Water distribution through tree canopy is affected by tree architectural model and another tree’s morphology. This research was done in order to predict the most appropriate tree species that is suitable on soil and water conservation. This research was conducted in Purwodadi Botanic Garden during the rainy season on January 2014 to March 2015, in order to examine the interception rate, throughfall and stemflow on some selected local plants i.e Syzygium polyanthum, Diospyros blancoi, Schleichera oleosa, Madhuca longifolia, and Canarium vulgare. Other observation that support the data, was also measured i.e. Leaf Area Index (LAI), crown depth, leaf size, Diameter of Breast Height (DBH), and height of tree on each species. Results showed that Diospyros blancoi has the highest interception value, which is 53 %, followed by C. vulgare 47.4%, S. oleosa 46.9 %, M. longifolia 38.6%, and S. polyanthum 35.6% respectively. Under the heavy rain, D. blancoi, which has the highest LAI value, also showed the best performance in the rainfall interception value and showed significantly different among others. Canopy interception and stem flow is related to rainfall, the higher the rainfall, the higher the throughfall and the stemflow among species. Morphology on each species, gives the different effect on their partitioning rainfall value.    
INFILTRASI DAN LIMPASAN PERMUKAAN PADA POLA TANAM AGROFORESTRI DAN MONOKULTUR : STUDI DI DESA JERU KABUPATEN MALANG Agung Sri Darmayanti; Solikin Solikin
Proceeding Biology Education Conference: Biology, Science, Enviromental, and Learning Vol 10, No 3 (2013): Seminar Nasional X Pendidikan Biologi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The  research  aims to determine  rate of water  infiltration and   soil run off  on agroforestry,  parennial  and annual  monoculture  cropping systems was conducted at  Jeru village Malang Refency. The water  infiltration rate was measured  by infiltrometer  and the soil  run off  was measured  simple ranfall simulator to make run off  on the soil.  The run off water and  soil  flowing  was   sheltered  into  a  glass   and   then weighing the dry mass of the soil.  Parameters observed  were plant species, trees architectures model, the amount of litter in the land. The results   showed  that  the  highest  water  infiltration rate  and  the lowest  soil run off  was  on multiculture agroforestry each 63,5 cm.h-1 and 0,3 g.lt-1  whereas  the  lowest  water infiltration  and  the highest  soil run off  was on  perennial  trees monoculture  cropping  system  each 30  h-1 and  2,9 g.lt-1 . The multiculture agroforestry  was  dominated by ‘waru  gunung’ (Hibiscus macrophyllus), ‘mindi’ (Melia azedarach), ‘mahoni’ (Sweitenia macrophylla), bamboes and cassava (Manihot esculenta)  that have different  tree architecture  models.  The diversity of  the tree species also  caused   varying litters  produced.  Key Word : infiltration, run off, architecture, litter
Variation of Phenology of Flacourtia rukam in Two Different Habitats and Their Relation to Rainfall, Dry Days, and the Plant Water Status Darmayanti, Agung Sri; Ariffin; Waluyo, Budi; Ariesoesilaningsih, Endang
Jurnal Manajemen Hutan Tropika Vol. 30 No. 1 (2024)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7226/jtfm.30.1.118

Abstract

Phenological shifts in the emergence of vegetative and generative parts, occur due to the response of plants to water received due to climate change. The rukam tree (Flacourtia rukam (Zoll & Moritzi)) is a local Indonesian plant with potential as an edible fruit and antioxidant agent, but its existence is increasingly rare. F. rukam can be found in Pasuruan, East Java, including Purwodadi Botanical Garden (PBG) as collected plants and Sekarmojo Village as cultivated plants. These populations show a shift in phenology, but this has never been studied. This study aimed to analyze the spatial variation of the phenology of two rukam populations and its relation to plant water status, rainfall quantity (RQ), and drought days (DD). This research was conducted on two individual trees at each location, was conducted from August 2020 to October 2022 using secondary data from BMKG, such as daily rainfall and the number of days without rain. Phenology was directly observed every week with an estimated abundance of numbers 1-4; plant water status was observed by calculating relative water content (RWC); soil physical analysis was carried out in mid-season. Data were analyzed by Mann-Whitney test and SEM WarpPLS. The results showed differences in phenology in the phases of leaf fall, flower buds, young fruit, and ripe fruit on the trees in the different locations. The decreased RQ in the past month significantly reduced the RWC value of F. rukam in both places, while the number of DD contributed to a decrease in the RWC value in PBG only, not in Sekarmojo. In both sites, decreasing the RWC of the rukam increased the abundance of fallen leaves and the chances of flowering. Rainfall and drought days affected plant phenology directly or indirectly through RWC mediation. In both places, RQ had a direct positive and significant effect on blooming flowers and new leaves but had negative effect on fallen leaves. While DD had a positive effect on leaf fall, flower formation, and fruit ripening, but had a negative effect on the appearance of young fruit (in PBG). Indirectly, RQ mainly affected several phenological parameters, while DD did not affect all phenological parameters.
Co-Authors Ariesoesilaningsih, Endang Ariffin Budi Waluyo Fiqa, Abban Putri Ridesti Rindyastuti Solikin Solikin Solikin Solikin