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Kusumiyati
Fakultas Pertanian, Universitas Padjadjaran
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Yield Responses of Red Chili (Capsicum Annuum L.) Cultivars to Nutrient Solution Volumes and Agricultural Building Types Salsabila, Syifa; Farida, Farida; Kusumiyati, Kusumiyati
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 26 No. 03 (2025): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/eksakta/vol26-iss03/616

Abstract

This study aimed to evaluate the yield responses of red chili to three agricultural buildings (greenhouse, screenhouse, open field), four nutrient solution volumes (100%, 75%, 50%, 25% ETc) and two cultivars (Pilar and Osaka). This is the first study to assess the combined effects of agricultural buinding type, nutrient volume based on ETc, and two red chili cultivars (Pilar and Osaka) using a split-splt plot design under tropical-dry season conditions. The experiment was conducted from August 2024 to February 2025 at Padjadjaran University, Indonesia, using a split-split plot design with 24 treatment combinations and three replications. Data were analyzed using ANOVA and DMRT at the 5% level. The results showed no interaction among three factors but each had a significant individual effect. Greenhouse conditions significantly increase the number of fruits per plant, fruit weight per plant, individual fruit weight and fruit length. Nutrient volume of 75% ETc and 100% ETc produced comparable result for fruit number and fruit weight per plant. The Pilar cultivar outperformed Osaka in fruit weight and diameter. These findings suggest that greenhouse cultivation with 75% ETc and Pilar cultivar enhance yield and supporting sustainable chili production in tropical regions.  
APLIKASI METODE UV SPEKTROSKOPI DAN KEMOMETRIKA UNTUK DISKRIMINASI MADU FLORA DAN MADU EKSTRAFLORA Suhandy, Diding; Yulia, Meinilwita; Kusumiyati, Kusumiyati
JST (Jurnal Sains dan Teknologi) Vol. 11 No. 1 (2022)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (606.072 KB) | DOI: 10.23887/jstundiksha.v11i1.44757

Abstract

Klasifikasi madu blossom dan madu honeydew menggunakan data spektra di panjang gelombang 190-400 nm belum dilakukan. Penelitian ini bertujuan untuk mengevaluasi penggunaan UV spektroskopi untuk klasifikasi madu flora yaitu madu Durian (Durio zibethinus) dan madu honeydew dari jenis ekstraflora yaitu madu Akasia (Acacia crassicarpa) dan madu Karet (Hevea brasiliensis) dari Indonesia. Sampel madu diencerkan dengan air distilasi dengan perbandingan 1:20 dan 1:30 (volume/volume) dan diteteskan sebanyak 3 mL ke dalam kuvet kuarsa. Spektra UV diukur menggunakan UV-visible spectrometer di rentang panjang gelombang 190-400 nm dengan interval 1 nm menghasilkan 211 variabel spektra. Model klasifikasi linear dibangun menggunakan metode linear discrimination analysis dan non-linear menggunakan metode support vector machine. Hasil penelitian menunjukkan kedua metode tersebut dapat digunakan untuk klasifikasi madu flora dan ekstraflora dengan nilai akurasi, sensitivitas, spesifisitas, presisi, dan koefisien korelasi Matthews sebesar 1 atau 100%. Hal ini menunjukkan aplikasi metode UV spektroskopi sebagai metode analisis yang cepat, ramah lingkungan dan harga relatif terjangkau untuk diskriminasi madu flora dan ekstraflora di Indonesia.
Evaluation of Straw Mushroom Color Stability during Storage: The Role of Nano Edible Coating, Packaging, and Temperature Sitompul, Kiki Nuratni; Mubarok, Syariful; Kusumiyati, Kusumiyati
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 26 No. 04 (2025): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464) In Progress
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/eksakta/vol26-iss04/619

Abstract

Straw mushrooms are one of the nutritious edible mushrooms with high economic value. However, color changes during storage are one of the problems that impact the marketability. Post-harvest treatment in the form of the use of nano edible coatings, packaging, and storage temperatures can prevent gas exchange, control humidity and anti-browning agents in straw mushrooms. This study aims to evaluate the effect of nano edible coatings, packaging types, and different storage temperatures on the color stability of straw mushrooms. This study used a Completely Randomized Design consisting of a combination of nano edible coating treatments (nano sodium alginate and nano aloe vera), packaging types (vacuum, biodegradable, wrap packaging), and storage temperatures (room temperature (±25°C), 10°C, and 5°C), so that there are 18 treatment combinations. Each treatment was repeated twice so there were 36 experimental units. Each experimental unit consisted of two samples so that there were 72 samples at each observation time (1, 3, 5 days after storage), so that the total samples were 216. The results of the study showed that the combination treatment of nano sodium alginate with wrap packaging at a temperature of 10°C showed the best L*, a*, and hue values during 5 days of storage.
Co-Authors A. Nurfitriana A. Nurfitriana, A. A.A. Ketut Agung Cahyawan W Abdilah, Nurullah Asep Ade Risti Oktavia Ade Risti Oktavia Agus Arip Munawar Ahmad Saddam Amelia Amelia Andayaningsih, Poniyah Andri Tri Cahyono ANNE NURAINI Anni Yuniarti Ardika Albi Fauzi Arif Affan Wicaksono Aris Ma’ruf Aris Ma’ruf Arti Wahyu Utami Baarri, Ahmad Ni’matullah Al Desi Trisnawati Desmak Pertiwi, Fernanda Diding Suhandy Diky Indrawibawa Dinnur Afiifah Dinnur Afiifah, Dinnur Diyan Yunanto Setyaji diyan Yunanto Setyaji Diyan Yunanto Setyaji Diyan Yunanto Setyaji Dyah Rohma Wati Erni Suminar Erny Suminar Fajrianti Anandya Habibah Farida Farida Farida Farida Farida Farida Farida Farida Farida Farida Fauzi Ahmad Muda Fernanda Desmak Pertiwi Fernanda Desmak Pertiwi Fiky Yulianto Wicaksono Firman Rezaldi Firman Rezaldi Firman Rezaldi Firman Rezaldi Firman Rezaldi Firman Rezaldi Firman Rezaldi Firman Rezaldi Firman Rezaldi Firman Rezaldi Fitria Eka Resti Wijayanti Giyarto, Gunes Grace Pratiwi Manurung Gultom, Siska Rahmayani Gustiono Tegar Prasetyo Haifa Ruwaidah Hari Hariadi Ine Elisa Putri Ine Elisa Putri Ine Elisa Putri Ine Elisa Putri Ine Elisa Putri Ine Elisa Putri Ine Elisa Putri, Ine Elisa Jajang Sauman Hamdani Kurniasari, Indah Lestari, Rahma Wati Lilis Sugiarti Luciana Djaya Lutfiyyah, Syarief Aanisah M Faizal Fathurrohim M Fariz Fadillah M. Fariz Fadillah M. Fariz Fadillah M. Fariz Fadillah M. Fariz Fadillah M. Fariz Fadillah Maira, Faizah Maolana, Adrian Mathar, Irmawati Maulana, Yusuf Eka Ma’ruf, Aris Mochamad Arief Soleh Mochammad Imron Awalludin Mu’jijah Mu’jijah Muhamad Aditia Ghifari Muhammad Abdillah Hasan Qonit Muhammad Faizal Fathurrohim Muhammad Nur Muhammad Rizki Muhardiono, Iman N. Raniska N. Raniska, N. Nai’matul Retno Faizah Naini, Al Arofatus Nedya Deninta Nedya Deninta Nedya Deninta Ningtias, Retna Yulrosly Nisa, Kahirun Noladhi Wicaksana Oktavia Ade Risti Oktavia, Ade Risti Putri, Dina Rachman, Aulia Afifah Rahmat Budiarto Ratna Fitry Yenny Reni Purbanova Resti Nurjanah Rezaldi, Firman Rika Bhernike Sitepu Risa Nurul Falah Risa Nurul Falah Risti, Oktavia Ade Rosniawati, Santi Rufaidah, Fathi Ruminta Ruminta S. Puspadewi S. Puspadewi, S. Safitri, Endang Salsabila, Syifa Saraswati Prabawardani Sasmita, Heny Shazma Anwar  Siska Dwi Anggraeni Siska Rasiska Siti Suharyatun Sitompul, Kiki Nuratni Sofa Fajriah Sri Waluyo Sumadi Sumadi Sumadi Sumadi Suyamto Syarief Aanisah Lutfiyyah SYARIFUL MUBAROK Syariful Mubarok Tengku Sabrina Tino M Onggo Tino Mutiarawati Onggo Tino Mutiarawati Onggo Tino Mutiarawati Onggo Tino Mutiarawati Onggo Titin Sulastri Tri Mayanti Trisnawati, Desi Ucu Wandi Somantri Unang Supratman Usman Setiawan Uum Umiyati Uum Umiyati Varinto, Irvan Wahyu Ferdiyansyah Wawan Sutari Wawan Sutari Wibawa, Rangga Yayan Sumekar Yayat Rochayat Suradinata Yuda Hadiwijaya Yuda Hadiwijaya Yuda Hadiwijaya Yulia, Meinilwita Yulia, Meinilwita Yuliana Kolo Yussi Rabani Zulfatunnisa, Zulfatunnisa