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All Journal HAYATI Journal of Biosciences Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Ilmu Pertanian Indonesia Jurnal Lanskap Indonesia MEDIA KONSERVASI Jurnal Ilmu Lingkungan Jurnal Keteknikan Pertanian JURNAL MANAJEMEN AGRIBISNIS Jurnal Arsitektur Lansekap Journal of Contemporary Urban Affairs Jurnal Manajemen Pembangunan Daerah BUANA SAINS Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences International Journal of Islamic Education, Research and Multiculturalism (IJIERM) International Journal of Hydrological and Environmental for Sustainability Eduvest - Journal of Universal Studies Jurnal Teknologi Lingkungan
NIZAR NASRULLAH
Departemen Arsitektur Lanskap, Fakultas Pertanian, Institut Pertanian Bogor, Jalan Meranti Kampus IPB Darmaga, Bogor 16680
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Mathematics Neuroscience Physics Social Sciences Other

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Journal : HAYATI Journal of Biosciences

 1 
Tolerance Levels of Roadside Trees to Air Pollutants Based on Relative Growth Rate and Air Pollution Tolerance Index SULISTIJORINI RINI; ZAINAL ALIM MASUD; NIZAR NASRULLAH; AHMAD BEY; SOEKISMAN TJITROSEMITO
HAYATI Journal of Biosciences Vol. 15 No. 3 (2008): September 2008
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (66.094 KB) | DOI: 10.4308/hjb.15.3.123

Abstract

Motor vehicles release carbon monoxide, nitrogen dioxide, sulphur dioxide, and particulate matters to the air as pollutants. Vegetation can absorb these pollutants through gas exchange processes. The objective of this study was to examine the combination of the relative growth rate (RGR) and physiological responses in determining tolerance levels of plant species to air pollutants. Physiological responses were calculated as air pollution tolerance index (APTI). Eight roadside tree species were placed at polluted (Jagorawi highway) and unpolluted (Sindangbarang field) area. Growth and physiological parameters of the trees were recorded, including plant height, leaf area, total ascorbate, total chlorophyll, leaf-extract pH, and relative water content. Scoring criteria for the combination of RGR and APTI method was given based on means of the two areas based on two-sample t test. Based on the total score of RGR and APTI, Lagerstroemia speciosa was categorized as a tolerant species; and Pterocarpus indicus, Delonix regia, Swietenia macrophylla were categorized as moderately tolerant species. Gmelina arborea, Cinnamomum burmanii, and Mimusops elengi were categorized as intermediate tolerant species. Lagerstroemia speciosa could be potentially used as roadside tree. The combination of RGR and APTI value was better to determinate tolerance level of plant to air pollutant than merely APTI method. Key words: air pollutants, tolerance of roadside trees, relative growth rate, physiological responses, air pollution tolerance index
Paddy Loss and Its Implication to Fertilizer Subsidy in Indonesia A Faroby Falatehan; Yusman Syaukat; Hastuti Hastuti; Nizar Nasrullah
HAYATI Journal of Biosciences Vol. 28 No. 1 (2021): January 2021
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.28.1.73

Abstract

Indonesia is the third largest rice producer in the world, at the same time it’s a country that imports rice from various countries. The government has provided input subsidies to increase rice production and reduce imports. Modes of rice farming in Indonesia is relatively diverse, from conventional to modern, even in the post-harvest process. The objectives of this study are: to analyze the impact of post-harvest handling on food loss and to analyze the relationship between paddy or rice loss with the quantity and value of fertilizers subsidy and paddy production in Indonesia. The estimated food (rice) loss includes the stages of harvesting, threshing, drying, and milling stages and distribution. Farmers use various technologies in processing rice: serrated sickle in harvesting, power thresher in threshing, and flatbed dryer in drying; while rice milling was done using conventional rice miller. The total rice loss reached 6.91 million tons in 2014 and continued to increase to 8.14 million tons in 2018. The growth rate of fertilizer subsidy value is higher than those of subsidized fertilizer quantity and paddy or rice loss. The results indicated that growth rates of paddy production and rice loss was lower than increased of government subsidy for fertilizer.
Co-Authors . Mariski A. Faroby Falatehan Afra DN Makalew Afra DN Makalew Afra DN Makalew AHMAD BEY Andi Artiningsih Andi Gunawan Andi Suryanto Anisah Nur Izzah Bambang Sulistyantara Benanda Yasminingrat, R Anantama Dea Amanda Demara, Raja Syahri Desi Anjana Dwiputri Devi Wahyuningtyas Utami Diana Vitasari Dibyanti Danniswari Djamal, Normalia Doksa Safira Tarigan E. Junathan Muakhor E. Junathan Muakhor Erfin Kurniawan Farida Dwirahmawati Femy, . Fitria Dewi Raswatie Gusti Dianda Sari Hardjanto , Arini Harjanto, Arini Hastuti Hastuti Hastuti Hastuti Hermawan, Rachmad I Nengah Suastawa I Putu Surya Wirawan Inke Resunda Jenny I S Poerwanti Kartikasari Kgs. Azhar Ansari LILIK BUDIPRASETYO Makalew, Afra Donatha Nimia Mas'ud, Zainal Alim Muhammad Amin Shodiq Musfira, Lasta Mustika Dewi, Herfiana Anggun Mutmaini, Leny Faridhotul Ni Ketut Wuri Tunggalini R Anantama Benanda Yasminingrat Rizki Alfian Rosyi Damayanti T Manningtyas Sherly Arisanti SOEKISMAN TJITROSEMITO Sonjaya, Muthia Pratiwi Sulistijorini Syahraeni, Nur Tati Budiarti Togar LM Gultom Umara Hasmarani Rizqiyah Widyanti, Ramanda Winahyu, Fauziyya Puji Yessy Velina Yulia Mustika Wati Yusman Syaukat ZAINAL ALIM MASUD Zainal Alim Mas’ud