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EFFECTS OF AMELIORANT COMPOSITIONS ON NITROGEN MINERALIZATION AND UPTAKE BY SWEET CORN IN DEGRADED PEATLAND Maftu’ah, Eni; Purwanto, Benito Heru
Indonesian Journal of Agricultural Science Vol 15, No 1 (2014): April 2014
Publisher : Indonesian Agency for Agricultural Research and Development - MOA

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Abstract

Peat soil is characterized by poor nitrogen (N) availability. Ameliorants are expected to rectify this problem. This research  aimed to study the effect of ameliorant on N availability and N uptake by sweet corn plant in degraded peatland. The experiment was conducted in the greenhouse in May-July 2011 and on peatland of Kalampangan Village, Palangkaraya, Central Kalimantan in September-December 2011. Burnt peat soil of Kalampangan was used in the greenhouse experiment and sweet corn was used as an indicator plant. The treatments consisted of two factors, i.e. compositions of ameliorants by weight (A1 = 80% chicken manure + 20% dolomite; A2 = 80% local farm weed + 20% dolomite; A3 = 80% mineral soil + 20% dolomite; A4 = 20% chicken manure + 20% local farm weed + 20% residue of Chinese water chestnut (Eleocharis dulcis) + 20% mineral soil + 20% dolomite; and A5 = 19% chicken manure + 71.5% mineral soil + 9.5% dolomite) and rates of those ameliorants (5, 10, 15, 20 and 25 t ha-1). The experiment was arranged in a completely randomized block design with three replications. Data were collected every two weeks for five times. Observations were made on soil pH, available N (NH4+, NO3-), plant height, and N uptake in root and shoot. The results showed that  treatment A1 increased soil pH and availability of NH4+ and NO3-  in peat soils at the maximum vegetative stage. Treatment A1 provided the highest N availability and N uptake by the plant. Field experiment showed that N uptake increased  with the plant yield. Optimum yield of fresh corn cob was obtained from treatment A1 at the rate of 20 t ha-1. This research reconfirms the effectiveness of chicken manure and dolomite as peat soil ameliorant.
PERAN MIKROBA STARTER DALAM DEKOMPOSISI KOTORAN TERNAK DAN PERBAIKAN KUALITAS PUPUK KANDANG Agus, Cahyono; Faridah, Eny; Wulandari, Dewi; Purwanto, Benito Heru
Jurnal Manusia dan Lingkungan (Journal of People and Environment) Vol 21, No 2 (2014)
Publisher : Pusat Studi Lingkungan Hidup Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1.84 KB)

Abstract

Pupuk organik perlu didekomposisi oleh mikroba dan memerlukan lingkungan yang sesuai agar cepat matang sempurna dan tidak memberikan dampak negatif pada aspek sosial, estetika maupun kesehatan pada makluk hidup dan lingkungan. Dekomposisi bahan pupuk organik dilakukan dengan menggunakan kotoran sapi, dengan 2 perlakuan mikroba (tanpa dan dengan mikroba starter) dan 3 variasi waktu, yaitu 0, 6 dan 24 jam setelah diberi mikroba starter. Analisis meliputi  uji fisik bahan pupuk yang meliputi pH, warna, aroma, lengas, dan DHL,  uji mikroba patogen (Eschericia. coli dan Salmonella) pada pupuk, pengujian kandungan hara pupuk total (C, N, P, K, Ca, Mg, Na, S, Cd, Cr, B, Fe, Cu, Zn)  dan Ntersedia (NH4 dan NO3),  serta analisis emisi gas amonia (NH3), oksigen (O2), karbon monoksida (CO), karbon dioksida (CO2), metana (CH4), NOx, NO, dan SO2. Mikroba starter mengandung mikrobia dan unsur hara yang sangat diperlukan dalam proses dekomposisi bahan organik. Pupuk kandang sapi setelah aplikasi  mikroba starter masih mengandung E. coli dan Salmonella sp. yang cenderung menurun seiring dengan lama waktu inkubasi. Terjadi dinamika kandungan unsur-unsur hara seperti P, K, Mg, Fe dan Cu serta logam berat Cr selama proses inkubasi baik pada pupuk kandang ayam maupun sapi. Dengan perlakuan mikroba starter, bagian senyawa sulfur dari bahan organik banyak yang terombak menjadi gas SO2 yang relatif tidak berbau, dan sebaliknya H2S serta senyawa reduktif sulfida lainnya menjadi terhambat pembentukannya. Perombakan dengan  mikroba starter sebaiknya diupayakan dalam suasana aerobik atau dengan suasana lembab tetapi tidak sampai anaerobik sehingga kehadiran senyawa H2S dan senyawa sulfur reduktif lainnya dapat dikurangi atau tidak terbentuk. Hasil penelitian ini menunjukkkan pentingnya penggunaan mikroba starter optimal dan benar untuk memperbaiki kandungan nutrisi dan kualitas pupuk kandang.
PENGARUH KUALITAS BAHAN ORGANIK DAN KESUBURAN TANAH TERHADAP MINERALISASI NITROGEN DAN SERAPAN N OLEH TANAMAN UBIKAYU DI ULTISOL Wijanarko, Andy; Purwanto, Benito Heru; Indradewa, Didik
Perkebunan dan Lahan Tropika Vol 2, No 2 (2012): PERKEBUNAN DAN LAHAN TROPIKA
Publisher : Fakultas Pertanian Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (197.199 KB) | DOI: 10.26418/plt.v2i2.3484

Abstract

Bahan organik tanah sangat berpengaruh terhadap kesuburan tanah dan produksi biomassa tanaman. Kualitas bahan organik merupakan salah satu kunci dalam menjaga kelestarian tanah, tanaman dan lingkungan. Penelitian ini bertujuan untuk mempelajari pengaruh kualitas bahan organik dan kesuburan tanah terhadap mineralisasi N. Untuk mengestimasi parameter mineralisasi N (potensial mineralisasi N (N0), laju mineralisasi (k), energi aktivasi (Ea) dan N0k) dilakukan percobaan inkubasi di laboratorium, menggunakan persamaan first order. Sedangkan hubungan antara parameter mineralisasi dengan serapan hara N, dilakukan dengan melakukan percobaan pot di rumah kaca. Nilai N0, k dan Ea berturut-turut adalah 400 1156 mg kg-1, 0,0056 0,098 per minggu dan 10166 31478 J mol-1. Parameter mineralisasi N berkorelasi positif dengan N larut air, N-POM, Mikrobiomassa N, C-POM, Mikrobiomassa C, N-total dan nisbah C/N serta berkorelasi positif dengan berat kering tanaman, konsentrasi N dan serapan N tanaman ubikayu. Bahan organik yang mempunyai nisbah C:N rendah dan tanah yang mempunyai tingkat kesuburan yang lebih tinggi mempunyai mineralisasi N yang lebih tinggi, yang ditunjukkan dengan nilai N0, k dan N0.k yang lebih tinggi dibandingkan dengan bahan organik dengan nisbah C:N tinggi dan kesuburan tanah yang rendah. Kata kunci : kualitas bahan organik, kesuburan tanah, mineralisasi N, serapan N
EFFECTS OF AMELIORANT COMPOSITIONS ON NITROGEN MINERALIZATION AND UPTAKE BY SWEET CORN IN DEGRADED PEATLAND Eni Maftu’ah; Azwar Ma'as; Benito Heru Purwanto
Indonesian Journal of Agricultural Science Vol 15, No 1 (2014): April 2014
Publisher : Indonesian Agency for Agricultural Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/ijas.v15n1.2014.p35-45

Abstract

Peat soil is characterized by poor nitrogen (N) availability. Ameliorants are expected to rectify this problem. This research  aimed to study the effect of ameliorant on N availability and N uptake by sweet corn plant in degraded peatland. The experiment was conducted in the greenhouse in May-July 2011 and on peatland of Kalampangan Village, Palangkaraya, Central Kalimantan in September-December 2011. Burnt peat soil of Kalampangan was used in the greenhouse experiment and sweet corn was used as an indicator plant. The treatments consisted of two factors, i.e. compositions of ameliorants by weight (A1 = 80% chicken manure + 20% dolomite; A2 = 80% local farm weed + 20% dolomite; A3 = 80% mineral soil + 20% dolomite; A4 = 20% chicken manure + 20% local farm weed + 20% residue of Chinese water chestnut (Eleocharis dulcis) + 20% mineral soil + 20% dolomite; and A5 = 19% chicken manure + 71.5% mineral soil + 9.5% dolomite) and rates of those ameliorants (5, 10, 15, 20 and 25 t ha-1). The experiment was arranged in a completely randomized block design with three replications. Data were collected every two weeks for five times. Observations were made on soil pH, available N (NH4+, NO3-), plant height, and N uptake in root and shoot. The results showed that  treatment A1 increased soil pH and availability of NH4+ and NO3-  in peat soils at the maximum vegetative stage. Treatment A1 provided the highest N availability and N uptake by the plant. Field experiment showed that N uptake increased  with the plant yield. Optimum yield of fresh corn cob was obtained from treatment A1 at the rate of 20 t ha-1. This research reconfirms the effectiveness of chicken manure and dolomite as peat soil ameliorant.
Pengaruh Pupuk Majemuk NPK + Zn terhadap Pertumbuhan, Produksi dan Serapan Zn Padi Sawah di Vertisol, Sragen Maas, Azwar; Devangsari, Imas Masithoh; Purwanto, Benito Heru
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 4, No 2 (2016)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2016.059.75-83

Abstract

Vertisol is a soil that has neutral to slightly alkaline pH. Zinc availability decreases with increasing pH. The existence of symptoms micronutrients scarcity, especially zinc, also caused by the use of highly yielding seeds with unbalanced fertilization. In addition, Zn uptake by plants is sustainability process which resulted in a decrease in nutrient levels of Zn in the root zone. The aim of the research was to determine the optimum Zn formula that can be added to the NPK compound fertilizer and to determine the effectiveness of the fertilizer on the growth and yield of rice. The experiment was arranged by completely randomized block design with 10 treatments and 3 replicates of each treatment. NPK compound fertilizer dose was given 300kg / ha. The result of this study showed that the compound fertilizer NPK + Zn had no effect on plant height, number of tillers and weight of the plant. The additional dose compound of 2% Zn to the dose of compound fertilizer NPK + Zn did not increase the yield. There was a tendency NPK treatment +0.75% Zn deliver the highest results. NPK compound fertilizer application + Zn significantly increased the uptake of Zn.
Pengaruh Nitrogen dan Silika terhadap Pertumbuhan dan Perkembangan Spodoptera litura (Lepidoptera: Noctuidae) pada Kedelai Trisnawati, Dina Wahyu; Putra, Nugroho Susetya; Purwanto, Benito Heru
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 5, No 1 (2017)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2017.071.52-61

Abstract

A study was conducted to establish the indirect effects of nitrogen (N) and silicon (Si) on the growth and development of Spodoptera litura on soybean. A full-factorial experiment was arranged in 4x2 factors: first factor was nitrogen with varied doses of 0, 25, 50, and 100 kg/ha; second factor was silicon at 0 and 200 g/m2. The results demonstrated that the application of N and Si indirectly affected the growth and development of S. litura including leaves consumed, weight of larvae, weight of pupal, fecundity and survivorship. In addition, combination of nitrogen and silicon also affected the growth and development of soybean as evidenced by the decreased absorption of Si by soybean following the application of N, while the application of Si combined with high nitrogen doses decreased the absorption of Si. It was also observed that the effect of N was not significant on the growth and development of S. litura.  The application of Si with the high N doses, however, decreased the growth and development of S. litura. It is, therefore, concluded that the mechanism of relationship between N and Si on S. litura could not be explained only by quantifying the absorption value of N and Si.
Land Management for Agriculture After The 2010 Merapi Eruption Utami, Sri Nuryani Hidayah; Purwanto, Benito Heru; Marwasta, Djaka
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 6, No 1 (2018)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2018.078.32-38

Abstract

The great eruptions of Mount Merapi in 2010 have drawn a great deal of attention from both national and international media.The month-long eruptions killed more than 200 people, displaced over 100,000 residents, killed over 1,000 livestock and destroyed over 1,000 hectares of productive farming fields. Incidentally, agriculture is one of the livelihood sectors that suffered heavily. Further, it impacted farmers the most as they depend on farming activities as their main source of livelihood. After, the eruption, land management became based on material type and condition of the land.. Principles of land management involve the provision of appropriate environmental needs of plants, the availability of moisture, nutrients, colloidal holding nutrients, and aeration. In short, they entail the technical aspects of recovery after the eruption of plants based on the conditions of the land. Also included are crop diversification (intercropping cultivation, crops rotation, mixed farming, etc) and intensification of yard (horticulture crops, hedge rows); as well as reinforcing of core and source of cattle nutrition, for example gliricedea; fast growing and producing crops are needed but those that need high capital / major costs for planting and care are not required. Furthermore, the concept of post-eruption land arrangements needs to be formulated based on the configuration of the land which is mainly related to local circumstances such as topography, hydrology, meteorology, and natural drainage systems.
Changes in the soil pH, EC, available P, DOC and inorganic N after land use change from rice paddy in northeast Japan Kusumawardani, Patria Novita; Cheng, Weiguo; Purwanto, Benito Heru; Utami, Sri Nuryani Hidayah
Journal of Wetlands Environmental Management Vol 5, No 2 (2017): July-December 2017
Publisher : Center for Journal Management and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jwem.v5i2.138

Abstract

The objective of this study was to determine the changes in the basic soil chemical properties including pH, electrical conductivity (EC), available phosphorus (P), dissolved organic carbon (DOC) and inorganic Nitrogen (NH4+ -N and NO3- -N) after approximately 15-40 years land use change from rice paddy field to orchard, wetland and upland in northeast Japan. Five land use change fields were investigated, including, forest, rice paddy, orchard, wetland and upland near Kumagai shrine, Shonai-machi, Yamagata, Japan. Soil samples were collected from surface layer (0-15 cm) and subsurface layer (15-30 cm) in October 2015. Soil chemical properties of pH, EC, available P, DOC and inorganic N (NH4+ -N and NO3- -N) were analyzed on air-dried samples. The pH increased significantly in the upland after 15 years conversion from rice paddy in both layers, with other land use changes only increasing pH in subsurface layer. EC significantly decreased in the surface layer of orchard and upland fields and in subsurface layers of all the converted fields. Available P significantly decreased in the converted fields, except in the upland subsurface layer. DOC amounts were not significantly different after land use changes from paddy fields. The NH4+ -N decreased significantly only in the surface layer of upland, while NO3- -N increased significantly only in the surface layer of wetland. Significant changes in soil properties were observed after 15 years conversion to upland and 40 years conversion to orchard and wetland from former rice paddy field in this study.
Physico-Chemical Properties of Volcanic Soils under Different Perennial Plants from Upland Area of Mt. Merapi, Indonesia Kartikawati, Retno; Hanudin, Eko; Purwanto, Benito Heru
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 7, No 1 (2019)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2019.098.93-102

Abstract

Vegetation recovery is essential in land restoration after the eruption of Mount Merapi in 2010. Vegetation is a source of organic material that produces root exudate containing organic acids. These acids accelerate the dissolution process of volcanic material so that it affects the soil characteristics. This study was conducted to analyze the effect of four types of perennial plants on soil chemical and physical characteristics. The soil samples were taken on the area planted with cinnamon, albizia, bamboo, and acacia, at depths of 0 – 10 cm, 10 – 20 cm, 20 – 30 cm, 30 – 40 cm, and 40 – 50cm. The soil chemical analysis carried out included pH H2O, pH KCl, pH NaF, C-organic, Humic acid and Fulvic acid, cation exchange capacity, Ca, Mg, K, Na, available P, base saturation, and particle size distribution. The results show that pH H2O, pH KCl, C-organic, humic acid and fulvic acid, CEC, K, Na, Ca, Mg, available P, base saturation, and particle size distribution were significantly affected by vegetation type. Meanwhile, the pH of NaF was not significantly influenced by vegetation type. Cinnamon is a plant that gives the strongest influence in the improvement of soil chemical-physical properties compared to the other three types of vegetation. Therefore cinnamon is quite prospective plant to be developed for post-eruption land reclamation.
Perbaikan Kesuburan dan Kualitas Tanah Bekas Ubikayu Melalui Pengembalian Biomassa Kacang Tanah dan Jagung Wijanarko, Andy; Purwanto, Benito Heru; Shiddieq, Dja’far; Indradewa, Didik
Jurnal Penelitian Pertanian Tanaman Pangan Vol 1, No 2 (2017): Agustus 2017
Publisher : Pusat Penelitian dan Pengembangan Tanaman Pangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (109.502 KB) | DOI: 10.21082/jpptp.v1n2.2017.p153-163

Abstract

Continuous planting of cassava can reduce soil fertility and yield of cassava. Returns of plant biomass can reduce the rate of decline in soil fertility. This study aims to determine the effect of the return of groundnut biomass in improving soil fertility and soil quality at cassava land. Laboratory and greenhouse studies have been conducted in Iletri Malang. Laboratory studies to determine the mineralization of N, experiment using a completely randomized design with three replications. The treatment consists of : the first factor (origin biomass): groundnut, maize, groundnut, maize 1: 1 (w/w), groundnut - maize 2: 1 (w/w), groundnut - maize 1: 2 (w/w) and without biomass, while the second factor (duration of land utilization for cassava): less than 10 years and more than 30 years. N mineralization estimated using first order equations. Greenhouse experiment using a randomized block design with treatment as same as with laboratory experiments. Parameter observations greenhouse experiment was pH, N and C in total, NH4+, NO3-, N labile fractions, C labile fractions and uptake of N, P, K. The results showed that application of groundnut : maize biomass ( 2: 1), increase the rate of mineralization (K) by 43% -56% and increase the amount of N mineralized (N0) by 171-222% as compared with no biomass application. Application of groundnut : maize biomass (1: 1) or groundnut : maize biomass (2: 1) is able to improve soil fertility as reflected by the increasing availability of total N, C-organic, NH4 + and NO3, improve the soil quality  with increase in the soil quality parameters ( N and C labile fractions), and  increases of the uptake of N, P and K by cassava. Returns biomass either groundnut mixed with maize or not, has the potential to restore soil fertility.
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Syukur Adileksana, Cahyo Amalia Tetrani Sakya Andy Wijanarko Andy Wijanarko Anna Kusumawati Aridinasty Maritasari Arifin Fahmi Arifin Fahmi Arifin Fahmi Arifin Fahmi Fahmi Asih Indah Utami Azwar Ma'as Azwar Maas Azwar Maas Azwar Maas Azwar Maas Azwar Maas Azwar Ma’as Azwar Ma’as Bambang Hendro Sunarminto Bambang Hendro Sunarmito BASUKI BASUKI Bayu Dwi Apri Nugroho Bostang Radjagukguk Bostang Radjagukguk Bostang Radjagukguk Bostang Radjagukguk Bostang Radjagukguk Cahyo Wulandari Cahyono Agus Christoporus Sudradjat Widiarso Devangsari, Imas Masithoh Dian Syafitri Ompusunggu Didik Indradewa Didik Indradewa Dina Wahyu Trisnawati Djaka Marwasta Eko Hanudin Eko Hanudin Eko Hanudin Eko Hanudin Eko Hanudin Eko Hanudin Hanudin Endang Sulistyaningsih Endang Sulistyaningsih Endang Sulistyaningsih Endang Sulistyaningsih Eni Maftu’ah Eni Maftu’ah Eny Faridah Erni R, - Heri Wibowo Husen, Edi Indradewa, Didik Kartikawati, Retno Keitaro Tawaraya Kusumawardani, Patria Novita Lilian Rizkie Maas, Azwar Maftukhah, Rizki Makruf Nurudin Margi Asih Maimunah Miranti Dian Pertiwi Mulyono Nitisapto MULYONO, NITISAPTO Nugroho Susetya Putra Nugroho Susetya Putra Nur Indah Mansyur Prapto Yudono Putra, Nugroho Susetya Putri Wulandari Putu Oki Bimantara Putu Sudira Putu Sudira Putu Sudira R. Sapto Hendri Boedi Soesatyo Retno Kartikawati Riza Kurnia Sabri Rudi Hari Murti Samuel Munyaka Kimani Santika Sari Shiddieq, Dja’far SIGIT SUPADMO ARIF Sri Hartati Sri Nuryani Hidayah Utami Sri Nuryani Hidayah Utami Sri Nuryani Hidayah Utami Sri Nuryani Hidayah Utami Sri Nuryani Hidayah Utami Sri Nuryani Hidayah Utami Sri Nuryani Hidayah Utami Sri Nuryani Hidayah Utami, Sri Nuryani Hidayah Sri Redjeki Stephen Harper Suci Handayani Sukristiyonubowo, Sukristiyonubowo Supriyanto Notohadisuwarno Tangguh Prakoso Totok Gunawan Valensi Kautsar Vira Kusuma Dewi Weiguo Cheng Weiguo Cheng, Weiguo Wijanarko, Andy Wiji Safitri Wijoyo, Rachmanto Bambang Wiratama, Ristiya Adi Yoga Yuniadi Yuli Lestari