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Laimeheriwa, Semuel
Fakultas Pertanian Universitas Pattimura
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The Effect Of Climate Change On Productivity Of Clove (Syzigium Aromaticum) In Haruku Island, Central Maluk Regency Imelda Jeanette Lawalata; Herman Rehatta; Semuel Leimaheriwa; Johana Audrey Leatemia
Agrologia Vol 12, No 1 (2023): Agrologia: Jurnal Ilmu Budidaya Tanaman
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ajibt.v12i1.1808

Abstract

The world trade history has recorded Maluku as a spice-producing region, including cloves. This commodity has high economic value and is the main source of income for farmers in several areas in Maluku Province. Climate is an environmental factor that also influences plant metabolism and physiology, so that changes in some elements of climate can have a negative impact on plant growth and productivity. The objective of this study was to get information regarding effect of climate variable on productivity of cclove in Haruku island, Central Maluku Regency. Data was collected by field srvey, while secondary data was gathered form related agencies. The results showed that the Haruku Island area with a local-unimodal rain pattern experienced an increase in annual rainfall of 11.8% in the period of 1991-2020 compared to the previous period (1961-1990). The rainy season rainfall (April-September) tends to increase by 15.2%, while the dry season rainfall (October-March) does not show a significant increase, namely only 1.3%. In the last 60 years (1961 – 2020) in the Haruku Island region, El-Nino extreme dry rainfall occurred 19 times. La-Nina wet extreme rainfall events occurred 14 times. Climate variables that affect production are the average annual length of solar radiation, the average annual relative humidity and the amount of annual rainfall
Analisis Kondisi Iklim dan Pemanfaatannya untuk Penetapan Musim Tanam di Daerah Batabual Kabupaten Buru Jamadin Biloro; Jacob Richard Patty; Semuel Laimeheriwa
JURNAL PERTANIAN KEPULAUAN Vol 5 No 2 (2021): Jurnal Pertanian Kepulauan
Publisher : Fakultas Pertanian, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (447.895 KB) | DOI: 10.30598/10.30598/jpk.2021.5.2.111

Abstract

The determination of the growing season is closely related with the climate change that occurs in a region The study aims to determine the trend of changing the growing season in the Batabual Area, changes in the growing season that occur due to changes in rainfall, and alternative planting patterns in Batabual region based on changes in the growing season that occur. Data analysis consisted of (1) determining the climatic conditions of the region using the Algebraic average method from monthly rainfall data from the Buru meteorological climate station for the last 30 years 1991-2020 and (2) determining the planting season using the FAO method (1978). The results showed that based on average rainfall data, the growing season lasted for 10 months and 19 days (November to September 19 of the following year). However, if you use rainfall with a 75% chance of being exceeded, the growing season period only lasts for 8 months and 21 days (December – July 21 of the following year).
Analisis Musim Tanam dan Pengaturan Pola Tanam Tanaman Pangan pada Berbagai Kondisi Curah Hujan di Daerah Amahai Kabupaten Maluku Tengah Erika Tentua; Semuel Laimeheriwa; Jacob Richard Patty
JURNAL PERTANIAN KEPULAUAN Vol 6 No 1 (2022): Jurnal Pertanian Kepulauan
Publisher : Fakultas Pertanian, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (350.609 KB) | DOI: 10.30598/jpk.2022.6.1.23

Abstract

Cropping patterning is an farming practice to obtain maximum production taking into account climatic conditions, soil and types of crops cultivated. This research, which was carried out in the Amahai Region, aimed to: (i) describe extreme climate events and (ii) determine the growing season and cropping patterns of food crops based on the length of the growing season available in the region. The analytical methods used consisted of: (i) determining extreme rainfall based on BMKG standards and ENSO History data, (ii) determining the planting season using the FAO method, and determining cropping patterns in conditions of extreme rainfall. The results showed that a very extreme El Nino event caused a decrease in rainfall in the Amahai region by 1,444 mm or 54% of its normal condition, on whereas a very extreme La Nina event caused an increase in rainfall by 1,528 mm or 60% of its normal condition. The growing season in the Amahai region under conditions of average (normal) and La Nina rainfall is throughout the year (12 months), and under conditions of extreme El Nino rainfall, the growing season lasts for 8 months and 26 days, 96 days shorter than normal conditions. In conditions of extreme El Nino rainfall, the cropping patterns that can be applied are sequential, monoculture, and polyculture/ intercropping.
Analisis Perubahan Curah Hujan Dan Pemetaan Zona Agroklimat Oldeman Pulau Seram Provinsi Maluku Robby G. Risamasu; Semuel Laimeheriwa; Elia L. Madubun; Marcus Luhukay
Innovative: Journal Of Social Science Research Vol. 3 No. 3 (2023): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v3i3.2317

Abstract

Adanya kecenderungan terjadinya perubahan curah hujan dalam periode belakangan ini dibandingkan dengan periode sebelumnya, maka berapa besar perubahan curah hujan yang sudah terjadi perlu dianalisis untuk mengetahui kondisi iklim terkini. Berdasarkan hal tersebut, maka telah dilakukan suatu penelitian yang bertujuan untuk menentukan tren perubahan curah hujan dan memetakan Zona Agroklimat Oldeman Pulau Seram yang baru. Penelitian ini menggunakan data curah hujan 60 tahun yang dibagi menjadi 2 periode, yaitu 1962-1991 dan 1992-2021. Pengumpulan data curah hujan bersumber dari berbagai Stasiun Meteorologi yang ada saat ini dan Stasiun Hujan yang pernah ada di Pulau Seram serta melalui pembangkitan data curah hujan menggunakan persamaan matematis sederhana. Analisis tren perubahan curah hujan dilakukan dengan membandingkan nilai rata-rata curah hujan antara dua periode. Penentuan zona agroklimat menggunakan sistem klasifikasi iklim Oldeman dan pemetaannya menggunakan Program Arc View 3.3. Hasil penelitian menunjukkan bahwa telah terjadi peningkatan curah hujan rata-rata tahunan di Pulau Seram dalam 30 tahun terakhir (periode 1992-2021) dibandingkan dengan 30 tahun sebelumnya (periode 1962-1991), yaitu sebesar 18,0% pada wilayah dengan pola hujan monsunal dan 12,2% pada wilayah dengan pola hujan lokal. Berdasarkan sistem klasifikasi iklim Oldeman, di Pulau Seram terdapat 4 zone agroklimat, yaitu A1, B1, C1 dan D1.
Rainfall Anomaly and Its Effect on the Clove Productivity in Two Regions with Different Rain Pattern In Maluku Sovya M M Manullang; Samuel Laimeheriwa; Martha Amba
JURNAL BUDIDAYA PERTANIAN Vol 19 No 1 (2023): Jurnal Budidaya Pertanian
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jbdp.2023.19.1.48

Abstract

Clove production in Maluku fluctuates from year to year, one of which is influenced by rainfall anomalies. This study aimed of describing extreme rainfall events and analyzing the relations between rainfall and clove productivity in two areas with different rainfall patterns in Maluku. This study used a survey method by using interviews and Focus Group Discussions with several farmer respondents as well as collecting climatic data from related agencies. Data analysis was divided into rainfall data generation, rainfall analysis in extreme conditions, and regression analysis to assess the effect of rainfall on clove productivity. The results showed that a very extreme El Nino event caused a decrease in rainfall on Nusalaut Island by 1868 mm or 57% of its normal condition, and in Air Buaya District by 875 mm or 42% of its normal condition. Very extreme La Nina events caused rainfall to increase in Nusalaut Island by 2059 mm or 62% of its normal condition, and in Air Buaya District by 1193 mm or 37% of its normal condition. The results of the regression analysis showed that the value of the coefficient of determination (R²) for Nusalaut Island by 84.8% and for Air Buaya District by 70.8%; this shows that rainfall has a significant effect on clove productivity.
Calculation of Land Water Balance and Its Utilization for Determining the Growing Season in the Pulau-Pulau Aru District, Aru Islands Regency, Maluku Province Elia L Madubun; Semuel Laimeheriwa; Merson Panggua
JURNAL BUDIDAYA PERTANIAN Vol 18 No 2 (2022): Jurnal Budidaya Pertanian
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jbdp.2022.18.2.107

Abstract

There are various methods that can be used to determine the growing season in an area; one of them is through the calculation of the land water balance. This study aimed to determine the presence of groundwater and determine the planting season in the Pulau-Pulau Aru Sub-District. In this study, the calculation of the regional average rainfall used monthly time series rainfall data for 30 years of observation (1991–2020). The calculation of land water balance used the ThornthwaiteMather method, and the determination of the growing season based on the values of soil water content at optimum conditions and the ratio between rainfalls and potential evapotranspiration. The results showed that the optimum soil water content for plants under conditions of 75% chance of rainfall lasted for 7 months (December to June), which was 2 months shorter than normal. The length of growing season with a 75% chance of rainfall lasted for 7 months (December to June), 2 months shorter than the growing season under normal rainfall conditions.
Rainfall Variability and Its Influence on P Palm Oil Productivity (Elaeis Guineensis Jacq.): Case Study at PT. Nusaina Group Seram Island Province Maluku Patty, Jacob R.; Laimeheriwa, Semuel; Madubun, Elia L.; Lingga, Sandivo
International Journal of Multidisciplinary: Applied Business and Education Research Vol. 5 No. 3 (2024): International Journal of Multidisciplinary: Applied Business and Education Rese
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/ijmaber.05.03.09

Abstract

Rainfall variability significantly influences plant productivity; including palm oil. This research aims to describe rainfall variability and its influence on oil palm productivity on Seram Island, Maluku Province. The data collected consists of rainfall, palm oil production data and supporting data. The analytical method used consists of generating rainfall data, analyzing extreme rainfall conditions and regression analysis to see the relationship between rainfall and palm oil productivity. The research results show that the El Nino rainfall anomaly at the research location in the 1992-2021 period occurred 8 times with a frequency of once every 2 - 6 years or an average of once every 3 years. La Nina occurs 7 times with a frequency of 1 – 10 years or an average of once every 4 years. The very extreme El Nino caused a reduction in rainfall at the research location by 888 mm or 40% of normal conditions, whereas the very extreme La Nina event resulted in an increase in rainfall of 1491 mm or 58% of normal conditions. Rainfall variability is very closely related to oil palm productivity with the regression equation Y = 94.05 – 0.1558x + 0.000083x 2 – 10 -8 x 3 and the accuracy level R 2 is 98.6%.
Analysis of Land Water Balance in Various Rainfall Conditions and Its Utilization to Determine Planting Patterns of Food Crops in the Eastern Part of Seram District of Seram Island Madubun , Elia L.; Ririhena, Rhony E.; Laimeheriwa , Semuel; Simamora , Ridoni
International Journal of Multidisciplinary: Applied Business and Education Research Vol. 5 No. 7 (2024): International Journal of Multidisciplinary: Applied Business and Education Rese
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/ijmaber.05.07.03

Abstract

Soil water balance calculation is one of the methods used to estimate the dynamics of soil water content during plant growth. This study aims to describe rainfall conditions and analyze soil water balance as well as determine the growing season and composition of food crop combination patterns based on the available growing season in East Seram Island. This research uses rainfall data for 30 years of observation period 1992-2021 from Geser Meteorological Station (Data analysis with the following stages: (i) rainfall analysis (ii) calculation of average rainfall (iii) determination of rainfall with a 75% chance (iv) calculation of soil water balance using the Thornthwaite and Mather method (v) determination of the growing season and cropping pattern. The results showed that the average rainfall in East Seram was 2,194 mm/year with a water deficit (D) occurring in October and November, then the rainfall had a 75% chance of being exceeded at 1,439 mm/year with a water deficit of 228 mm/year which lasted for eight months, namely August - March. The growing season under normal rainfall conditions was available throughout the year, while under high rainfall conditions, a 75% chance of the growing season was available for five months, namely May and October. The cropping patterns and crop combinations used were monoculture, polyculture, and intercropping with combinations of cassava, maize, sweet potato, groundnut, mung bean, cassava-corn, cassava-peanuts/green beans, maize-peanuts, cassava-corn-peanuts/green beans, cassava-corn-horticultural crops.
Studi Tentang Mutu Biji Pala Dengan Pengeringan Matahari dan Pengasapan Rahmadini, Nova; Marzuki, Ilyas; Laimeheriwa, Semuel
Jurnal Agrosilvopasture-Tech Vol 2 No 2 (2023): Jurnal Agrosilvopasture-Tech
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/j.agrosilvopasture-tech.2023.2.2.467

Abstract

The quality of nutmeg seeds is determined, among others, by their moisture content and the presence of aflatoxin contamination. To maintain quality, the moisture content of nutmeg seeds must be reduced to meet export standards. This can be achieved through sun drying or smoking. Aflatoxin is a mycotoxin produced by the Aspergillus fungi. The study aims to obtain nutmeg seeds with the appropriate moisture content according to the Indonesian National Standard (SNI) through sun drying and smoking methods. Also, it is to qualitatively identify the presence of aflatoxin in the nutmeg seeds. A total of 27 kg of nutmeg was divided into three treatment groups for drying and smoking. The drying and smoking treatments were arranged following a Randomized Block Design with three replications. Nutmeg essential oil was extracted using steam distillation. Subsequently, a qualitative identification of aflatoxin contamination was carried out using PDA media. The results showed that sun drying the nutmeg seeds for 72 hours resulted a moisture content of 7 - 8%. Meanwhile, the qualitative identification revealed the presence of Aspergillus niger, Penicillium sp, and Rhizopus stolonifer in the tested samples. No A. flavus, however, which is the main fungus responsible for aflatoxin production, was found in the results. Therefore, by drying the nutmeg seeds to a moisture content below 10%, the emergence of aflatoxin-causing fungi can be prevented.
MUSIM TANAM EFEKTIF TANAMAN BAWANG MERAH : UPAYA PEMBERDAYAAN PETANI DI DESA ABEAN KECAMATAN KEI KECIL TIMUR, KABUPATEN MALUKU TENGGARA Madubun, Elia L.; Laimeheriwa, Semuel; Lamerkabel, Jacobus S.A.
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 4 No. 6 (2023): Volume 4 Nomor 6 Tahun 2023
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v4i6.22567

Abstract

Salah satu permasalahan yang menyebabkan usaha tani bawang merah belum optimal adalah keterbatasan sumber daya air; dimana curah hujan merupakan sumber air utama dalam kegiatan usaha tani. Petani terkadang pasrah menghadapi kekeringan; dimana tidak ada aktivitas penanaman ataupun kalau ada penanaman pertumbuhan tanaman akan terganggu akibat kekeringan sehingga produksi sangat rendah, bahkan gagal panen. Disamping itu, ketika El Nino berlangsung petani sulit untuk menentukan kapan aktivitas penanaman dapat dilakukan. Salah satu tindakan antisipasi yang dapat dilakukan adalah menentukan waktu tanam yang tepat melalui analisis kebutuhan air tanaman. Informasi waktu tanam yang tepat kepada petani dalam kegiatan pemberdayaan, akan sangat membantu mereka untuk terhindar dari kekurangan air, gangguan pertumbuhan tanaman hingga gagal panen. Ke depannya, tidak hanya lembaga perguruan tinggi, pemerintahan daerah dalam hal ini Dinas Pertanian dan instansi terkait lainnya juga perlu memfasilitasi kebutuhan masyarakat petani untuk memperoleh ilmu, pengetahuan, dan keterampilan khusus di bidang pertanian. Untuk itu, perlu dibangun kerjasama yang mengikat antara perguruan tinggi yang ada dengan pemerintah daerah.
Co-Authors Amba, Martha Ardiansa, Ardiansa August Ernst Pattiselanno Edison Jambormias Eklesia D. Rarsina Erika Tentua Esterlina Kelbulan Herman Rehatta Ilyas Marzuki Imelda Jeanette Lawalata Jamadin Biloro Jenly F Uspessy Johana Audrey Leatemia Junianita Fridianova Sopamena Lamerkabel, J. S. A. Lingga, Sandivo Luhukay, Marcus Madubun, Elia L. Madubun, Elia Leonard Martha Amba Martha Amba Merson Panggua Mitha Pangaribuan Patty, Jacob R Pieter J Kunu Putri, Nisrina Intan Rahmadini, Nova Reni Tomasoa Rhony E Ririhena Risamasu, Robby G Risamasu, Robby. G. Simamora , Ridoni Siti Lailatul Nangimah Sitorus, Bangga Sovya M M Manullang Tomasoa, Reny