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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Agromet Agrikultura Zuriat Jurnal Fakultas Pertanian Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat Journal of Degraded and Mining Lands Management Jurnal Agro Kultivasi Mimbar Agribisnis: Jurnal Pemikiran Masyarakat Ilmiah Berwawasan Agribisnis Paspalum: Jurnal Ilmiah Pertanian Jurnal Agrotek Indonesia Soil REns
Fiky Yulianto Wicaksono
Departemen Budidaya Pertanian, Fakultas Pertanian Universitas Padjadjaran
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Education Engineering Languange, Linguistic, Communication & Media Public Health

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Prediction of NPK doses based on targeted fruit sugar content in Cucumis melo L. ‘Cantaloupe’ using a simple regression method Wibawa, Rangga; Mubarok, Syariful; Kusumiyati, Kusumiyati; Wicaksono, Fiky Yulianto; Ruminta, Ruminta; Budiarto, Rahmat; Putri, Dina; Varinto, Irvan; Rizki, Muhammad; Maolana, Adrian; Nisa, Kahirun; Giyarto, Gunes
Kultivasi Vol 23, No 3 (2024): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v23i3.57162

Abstract

The fruit sweetness is the main target in melon plant production. The highest criterion of sweetness is excellent, with 16% of total sugar content. Modification of essential plant nutrients is the alternative to reach that category. So, this study aims to obtain optimum NPK doses using a simple regression method. The experiment was conducted in a greenhouse with a soilless culture hydroponic system from August until November 2023 using a completely randomized design (CRD) with five treatments and four replications. The parameters included leaf area, plant dry matter, leaf nutrient uptake, fruit weight, and fruit sugar content. Pearson correlation analysis showed that the total sugar content in fruit has a significantly positive correlation with potassium in NPK fertilizer treatments such as K2O dose and K2O uptake at 7 WAP, i.e., 0.932 and 0.973, respectively. According to the regression model y = -50.7 + 1.079 N + 0.251 P2O5 + 0.528 K2O, the NPK formula fertilizer containing 31.56 g N, 23.99 g P2O5, and 50.42 g K2O can be used by grower to produce excellent fruit sugar content.
Rainfall and Temperature Change Analysis and their Correlation on Maize Productionin Karawang, West Java Ruminta; Fiky Yulianto, Wicaksono; Grace Ananda, Napitupulu
Agromet Vol. 38 No. 2 (2024): DECEMBER 2024
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j.agromet.38.2.88-96

Abstract

Maize is an important food commodity and its yields can be threatened by changes in climate variables, such as increasing air temperature and decreasing rainfall. The research identifies and detect the change in climate variables and analyze their correlation with maize production. Quantitative and descriptive methods were used namely trend analysis, correlation, and regression. We utilized climate data (temperature and rainfall) and maize production for 1991-2022, with tested study area in Karawang, West Java. We divided the climate data into two periods to analyze any change in climate variables. The results indicated a change in temperature (+0.56 °C) and rainfall (-47.34 mm) per year, but there is no change in the agroclimatic zone. Our findings showed a moderate correlation between rainfall and maize production and productivity, with the mean correlation coefficients of 0.31 and 0.35, respectively. Similarly, air temperature showed a moderate correlation with maize production and productivity, with the mean correlation coefficients of 0.30 and 0.32, respectively. Appropriate anticipatory and adaptation efforts are needed to maintain maize production in rainfed agriculture such as in Karawang Regency.
Identifikasi Perubahan Iklim dan Korelasinya terhadap Produksi Tanaman Padi (Oryza sativa L.) di Kabupaten Karawang Gunawan, Gia Putra; Ruminta, Ruminta; Wicaksono, Fiky Yulianto
Paspalum: Jurnal Ilmiah Pertanian Vol. 12 No. 2 (2024)
Publisher : Lembaga Penelitian dan Pengabdian Universitas Winaya Mukti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35138/paspalum.v12i2.840

Abstract

Rice is a food crop that is widely consumed by Indonesian people. Water availability and environmental conditions greatly influence the growth of rice plants, so that climate change can affect the production and productivity of rice plants. Efforts to anticipate a decline in rice production and productivity due to climate change require a study by identifying climate variabels, analyzing the correlation between climate and rice plants, and identifying solutions to adapt to climate change. The research was conducted in Karawang Regency using quantitative-descriptive methods, with the data analyzed being climate variabels including rainfall, temperature, humidity from 1991-2022 and rice plant variabels including rice production and productivity from 1991-2022. The analysis was carried out using trend analysis, correlation, regression, auto-regressive integrated moving average methods, and farmer interviews as analyses of adaptation strategies. The results of the research show that climate change has occurred in Karawang Regency as indicated by a decrease in rainfall intensity of 41.84 mm, a decrease in humidity percentage of 4.69%, and an increase in temperature of 〖0,92 〗^o C, and the climate type according to Oldeman is type D2, or there is no change in Oldeman’s Agroclimate zone. The results of interviews for adaptations include rotating crop planting, managing planting time, using seeds that are resistant to pest attacks, paying attention to the type of fertilizer used, controlling pests using insecticides or natural predators, and pumping water for irrigation channels.
Identifikasi Perubahan Suhu dan Curah Hujan serta Korelasinya dengan Produksi Padi di Kabupaten Garut Jawa Barat Ruminta, Ruminta; Wicaksono, Fiky Yulianto; Narmadhia, Salsabila
Agrikultura Vol 35, No 3 (2024): Desember, 2024
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/agrikultura.v35i3.59136

Abstract

Perubahan iklim merupakan ancaman bagi kegiatan budidaya pertanian termasuk budidaya tanaman padi Indonesia. Padi merupakan tanaman serelia yang sangat peka terhadap indikator perubahan iklim sehingga dapat menyebabkan perubahan hasil. Maka dari itu penelitian ini dilakukan untuk mengetahui besarnya perubahan curah hujan dan suhu serta korelasinya dengan produktivitas dan produksi padi di Kabupaten Garut. Penelitian dilakukan dengan metode deskriptif kuantitatif menggunakan analisis regresi, korelasi, dan klimogram yang masing-masing untuk mengetahui pola trend dari perubahan curah hujan dan suhu udara, pengaruh peruhaban curah hujan dan suhu udara terhadap produksi dan produkstivitas tanaman padi, serta kombinasi perubahan curah hujan terhadap suhu udara. Analisis korelasi dilakukan secara temporal selama periode 1982 hingga 2018 dan secara spasial untuk 42 kecamatan di kabupaten Garut. Data yang digunakan meliputi data iklim dan data budidaya tanaman padi yang diperoleh dari Dinas Pertanian, LAPAN, BPS, dan BMKG Kabupaten Garut pada tahun 1982 hingga 2018. Hasil penelitian menunjukkan bahwa di Kabupaten Garut terjadi trend peningkatan curah hujan sebesar 485 mm dan peningkatan suhu udara sebesar 0,2 oC serta pergeseran klimogram dari kiri ke arah kanan yang mengindikasikan perubahan curah hujan yang lebih besar dan perubahan suhu yang relatif kecil. Korelasi secara temporal antara curah hujan dengan luas panen dan produksi padi adalah signifikan dengan koefisien korelasi masing-masing sebesar 0,470 dan 0,385. Korelasi temporal antara suhu udara dengan luas panen, produktivitas, dan produksi padi adalah sigfinikan dengan koefisien korelasi masing-masing sebesar 0,424, 0,420 dan 0,423. Koefisien korelasi secara spasial antara curah hujan dengan produktivitas dan produksi padi di 42 Kecamatan Kabupaten Garut masing-masing berkisar antara 0,350–0,590 dan 0,390–0,794. Koefisien korelasi secara spasial antara suhu udara dengan produktivitas dan produksi padi masing-masing berkisar antara 0,572–0,648 dan antara 0,400–0,790. Fakta ini menunjukkan bahwa perubahan curah hujan dan suhu udara berpengaruh signifikan terhadap produktivitas dan produksi padi di Kabupaten Garut.
Agronomic performance and stability of Padjadjaran hybrid maize in different agroecosystems Fadhillah, Farhan; Wicaksono, Fiky Yulianto; Yuwariah, Yuyun; Ruswandi, Dedi
Kultivasi Vol 24, No 1 (2025): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v24i1.62060

Abstract

The development of high-yielding hybrid maize is a strategic step to address global food demand amidst climate change. This study evaluates the agronomic performance of 14 maize genotypes—10 newly developed F1 hybrids and 4 commercial checks—under two planting densities (95,000 and 55,000 plants/ha) across three agroecosystems (lowland, midland, and highland). The objectives were to identify superior and adaptive genotypes and analyze genotype × environment interactions using AMMI and GGE biplot methods. Genotype G12 exhibited the highest yield (338.4 g/plant) at high density, especially in the highland, but showed poor stability. In contrast, G5 demonstrated consistent performance and stability across environments. This study highlights G5’s potential for broad adaptation and provides insights for breeding programs targeting maize productivity in diverse agroecosystems.
Respons Petani Padi Terhadap Minat Dan Kemungkinan Menanam Hanjeli di Kecamatan Buahdua Kabupaten Sumedang Wiyono, Sulistyodewi Nur; Utami, Hesty Nurul; Salsabila, Dita Nur; Nurmala, Tati; Wicaksono, Fiky Yulianto
Mimbar Agribisnis : Jurnal Pemikiran Masyarakat Ilmiah Berwawasan Agribisnis Vol 11, No 2 (2025): Juli 2025
Publisher : Universitas Galuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25157/ma.v11i2.19470

Abstract

Sumedang Regency is one of the regions in West Java with relatively low rice production compared to Karawang, Indramayu, and Subang Regencies. The low productivity of rice farming in Sumedang presents an opportunity to introduce functional food crops as an alternative source of income for rice farmers. This study aims to analyze the characteristics of rice farmers and their current farming practices, as well as to examine their interest and likelihood of cultivating hanjeli as an alternative crop. A descriptive statistical approach was employed, using survey and questionnaire methods distributed to 65 respondents in Buahdua District, Sumedang Regency. The results indicate that the majority of rice farmers are male, aged between 40–60 years, and married. Most have completed elementary school, do not own land, and cultivate less than 0.5 hectares. Their average farming income is IDR 1.4 million per month, with an average monthly production cost of IDR 1.8 million. The findings reveal that the interest of rice farmers in cultivating hanjeli remains low. Most farmers are not yet confident in the economic potential of hanjeli as a supplementary income source. However, a small number of farmers show a potential willingness to adopt hanjeli cultivation, suggesting that with proper intervention and market support, adoption could increase over time.
Rice (Oryza sativa L.) production, productivity, and harvested area in Karawang Regency under extreme weather from 1991-2023 Buswar, Adine Syabina; Ruminta, Ruminta; Wicaksono, Fiky Yulianto
Kultivasi Vol 24, No 2 (2025): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v24i2.63735

Abstract

Climate change occurred in Karawang Regency due to extreme weather events, which are included in the El Nino climate anomaly phenomenon. The existence of extreme weather events in Karawang Regency has decreased rice production, which is a climate-dependent crop. Based on this problem, a study was conducted to analyze the identification of extreme weather changes and correlation analysis of rice crops in Karawang Regency to see the magnitude of extreme weather changes and the influence of extreme weather elements on rice crops. The method used is a quantitative descriptive method by analyzing extreme weather changes, correlation analysis of extreme weather elements on rice plants (production, productivity, and harvest area), and correlation graphs of extreme weather elements with rice plants. Data was obtained from BPS, BMKG, and the Karawang Regency Agriculture and Food Security Office. The results showed that Karawang Regency experienced extreme weather changes due to climate change, namely an increase in the average maximum rainfall (1.78 mm), an increase in maximum temperature (0.76 °C), a decrease in minimum temperature (-0.57 °C), a decrease in wet spell for 3 days, and an increase in dry spell for 10 days. The impact of extreme weather change, namely the wet spell element, has a real significant correlation with a moderate level to a decrease in rice production and productivity.
Effect of potassium fertilizer on the nutrition and physical quality of Job’s tears (Coix lacryma-jobi L.) seeds Haysa, Qinthara Nail; Yuwariah, Yuyun; Wicaksono, Fiky Yulianto
Kultivasi Vol 24, No 2 (2025): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v24i2.63213

Abstract

Job's tears is a cereal crop that has beneficial nutrients. Potassium is known to affect the growth and yield of cereal crops, but there has been limited study on whether potassium affects the nutrition and physical quality of Job’s tears seeds.  This study aimed to analyze the effect of K fertilizer on the nutritional content and physical quality of Job's tears seeds. This research was conducted from January to May 2024 at Ciparanje Experimental Field, Faculty of Agriculture, Universitas Padjadjaran, Sumedang, Indonesia. This experiment used the Randomized Block Design (RBD) method with six treatments and four replications. Various doses of K fertilizer (KCl) were tested, i.e., 0, 62.5, 125, 250, 375, and 500 kg/ha KCl. The measured nutritional content was the extraction rates of carbohydrate, protein, lipid, calcium, and potassium, while the physical quality was represented by the weight of husked grain, size of seeds, and seed hardness. Results showed that potassium increased the extraction rates of carbohydrate, protein, lipid, calcium, and potassium. Potassium also increased the weight of husked grain and size of seeds. A dosage of 500 kg/ha KCl resulted in the best nutrition, weight of husked grain, and size of seeds.
Improving substrate properties and foxtail millet growth in gold mine tailings using Azotobacter consortium Hindersah, Reginawanti; Adawiah, Aliya Zahrah; Suryatmana, Pujawati; Sule, Marenda Ishak Sonjaya; Wicaksono, Fiky Yulianto; Dewi, Triyani
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9293

Abstract

Improper disposal of mercury (Hg)-contaminated tailings on agricultural fields can reduce land quality for food production. A pot experiment was conducted to evaluate the effect of the Azotobacter consortium, comprising Azotobacter tropicalis S5, A. vinelandii S6a, and A. chrooccocum S9, on the Carbon-to-Nitrogen (C/N) ratio and Hg levels in tailings as well as foxtail millet growth, biomass, and mercury in plants. The experiment used a randomized block design with three levels of Azotobacter liquid inoculant, i.e., 3, 15, and 30 mL per pot, and six replications. The control did not receive inoculant. After six weeks, the treatment did not alter the pH, total nitrogen, organic carbon, carbon-to-nitrogen ratio, or total mercury levels in the soil; however, it did promote an increase in shoot height and leaf number, without affecting plant biomass. Applying 30 mL/pot of Azotobacter inoculant enhanced Azotobacter and total bacterial populations in the rhizosphere. The Azotobacter inoculant did not alter nitrogen uptake but potentially reduced mercury content in the plants. The Pearson’s test showed that Azotobacter levels in the substrate were significantly correlated with the decreased mercury content of plants. These findings suggest that the application of the Azotobacter consortium can lead to improved plant growth and a reduction in mercury uptake by millet plants grown in tailing-based substrate. Further research is necessary to develop more effective inoculants and extend the study period.
Analisis jalur antara dosis pupuk kalium dengan fisiologi, pertumbuhan, dan hasil hanjeli pulut Wicaksono, Fiky Yulianto; Qinthara Nail Haysa; Yuwariah, Yuyun; Irwan, Aep Wawan; Nurmala, Tati; Umiyati, Uum
Jurnal AGRO Vol. 12 No. 2 (2025)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/j.agro.52192

Abstract

Kalium merupakan unsur hara yang berperan penting pada produksi tanaman serealia, namun peranannya pada tanaman hanjeli pulut (Coix lacryma-jobi L. var. ma-yuen) masih belum diungkapkan dengan jelas. Penelitian ini bertujuan untuk mencari pengaruh langsung maupun tidak langsung pupuk kalium terhadap karakter fisiologi, pertumbuhan, dan hasil tanaman hanjeli. Percobaan dilakukan dari bulan Januari sampai Mei 2024 di Kebun Percobaan Fakultas Pertanian Universitas Padjadjaran, pada ketinggian 750 m di atas permukaan laut dengan ordo tanah Inceptisols. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok (RAK), yang terdiri dari enam perlakuan dan empat ulangan. Perlakuan yang diberikan adalah dosis pupuk KCl, yaitu 0; 62,5; 125; 250; 375; dan 500 kg ha-1. Pengamatan dilakukan pada indeks kandungan klorofil, konduktansi stomata, indeks luas daun, bobot biomassa, nisbah pupus akar, jumlah srisip, jumlah anakan, jumlah anakan produktif, jumlah malai per anakan, jumlah biji per malai, bobot 100 butir, dan bobot biji per tanaman. Analisis data menggunakan korelasi Pearson dan Analisis Jalur. Hasil penelitian menunjukkan bahwa dosis pupuk kalium berpengaruh langsung terhadap indeks kandungan klorofil, konduktansi stomata, jumlah srisip per anakan, jumlah malai per anakan, jumlah biji per malai, dan bobot biji per tanaman. Pengaruh tidak langsung dosis pupuk kalium terjadi pada komponen pertumbuhan, yaitu tinggi tanaman, jumlah anakan, nisbah pupus akar, dan indeks luas daun, melalui jalur komponen fisiologi. Dosis pupuk kalium juga mempengaruhi jumlah anakan produktif secara tidak langsung melalui jalur komponen fisiologi dan komponen pertumbuhan. Penelitian ini memberikan implikasi bahwa kekurangan kalium dapat dilihat lebih dini melalui pengukuran komponen fisiologi. ABSTRACT Potassium is a nutrient that plays a crucial role in cereal crop production, but its role in Job's tears (Coix lacryma-jobi L.) remains unclear. This study aims to find the direct and indirect effects of potassium fertilizer on the physiological characteristics, growth, and yield of Job's tears. The experiment was conducted from January to May 2024 at the Experimental Garden of the Faculty of Agriculture, Padjadjaran University, at an altitude of 750 m above sea level, with Inceptisols as the soil order. The experimental design employed a Randomized Block Design (RBD), comprising six treatments and four replications. The treatments applied were KCl fertilizer doses, namely 0, 62.5, 125, 250, 375, and 500 kg ha-1. Observations were made on the chlorophyll content index, stomatal conductance, leaf area index, biomass weight, shoot-to-root ratio, number of shoots, number of tillers, number of productive tillers, number of panicles per tiller, number of seeds per panicle, weight of 100 grains, and weight of seeds per plant. Data analysis used Pearson correlation and Path Analysis. The results showed that potassium dose directly affected the chlorophyll content index, stomatal conductance, number of shoots per tiller, number of panicles per tiller, number of seeds per panicle, and seed weight per plant. The potassium dose affected growth components, including plant height, number of tillers, root drop ratio, and leaf area index, indirectly through the physiological component pathway. The dose of potassium fertilizer also affected the number of productive tillers indirectly through the physiological and growth components pathway. The results of this study indicated that early detection of potassium deficiency is possible by assessing physiological components.
Co-Authors Abdulah Hafiz Adawiah, Aliya Zahrah Aep Wawan Irwan Agus Wahyudin Alfika Fauzan Amelia Ratnasari Anas Zubair, Anas Andala Muhamad Nurdin Andala Muhamad Nurdin Andhita Zata Dini Dini Anni Yuniarti Annisa Sarah Utami Putri Annisa Sarah Utami Putri, Annisa Sarah Utami Asyifa Fiani Putri Asyifa Fiani Putri, Asyifa Fiani Bajri, Reza Aed Galib Benny Joy Betty Natalie Fitriatin Buswar, Adine Syabina Cucu Suherman D. F. Sari D. F. Sari, D. F. Dedi Ruswandi Dedi Widayat Desri Nursyahbani Putri Dhany Esperanza Efrida Ariani Emma Trinurani Sofyan Fadhillah, Farhan Falih Ijlal Septian Farida Damayanti Fauzan, Alfika Fera Siti Meilani Giyarto, Gunes Grace Ananda, Napitupulu Gumelar, Fajar Akbar Gunawan, Gia Putra Haysa, Qinthara Nail Hesty Nurul Utami Irfan Maolana Joko Wiratmo Khairunnisa, Salma Kusumiyati Linda Wahyu Setianingrum Linda Wahyu Setianingrum, Linda Wahyu Lumbantobing, Maysix M. I. Janitra M. I. Janitra, M. I. Maolana, Adrian Maolana, Irfan Marenda Ishak Sonjaya Sule Meddy Rachmadi Mieke Rochimi Setiawati Muhamad Aristiyo Muhamad Aristiyo, Muhamad Muhamad Kadapi Muhammad Irfan Janitra Muhammad Irfan Janitra, Muhammad Irfan Muhammad Rizki Muhammad, Damara Bakti Narmadhia, Salsabila Ningtias, Utarie Ayu Nisa, Kahirun Nurdin, Andala Muhamad Nurinnida, Annisa Oviyanti Mulyani Pujawati Suryatmana Putri Utami Suherman Putri Utami Suherman Putri, Dina Qinthara Nail Haysa Rahmat Budiarto Rasyiqa Hasna Shabira Reginawanti Hindersah Reza Aed Galib Bajri Rhezaleta Eka Sutrisna Rizka Fitriani Rizka Fitriani Ruminta Ruminta Ruminta Sabilla, Yassa Salsabila, Dita Nur Sausan, Nida Hanun Soendajana, Audi Razaqa Solihah, Linda Puspa Suherman, Putri Utami Sulistyodewi Nur Wiyono Suseno Amien Syariful Mubarok Tati Nurmala Tati Nurmala Tati Nurmala Tati Nurmala Triyani Dewi Uum Umiyati Varinto, Irvan Wahyudin, Agus Warid Ali Qosim Wibawa, Rangga Yudithia Maxiselly Yuwariah, Yuyun Yuwariah Yuyun Yuwariah Yuyun Yuwariah Yuyun Yuwariah Yuyun Yuwariah Yuyun Yuwariah Yuwariah