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Journal : Jurnal Ilmu Pertanian Indonesia

Pencegahan Kerusakan Fisiologis Belimbing (Avverhoa carambola) dalam Rantai Pasok dengan Optimisasi Model Kombinasi Perlakuan Air Panas dan CaCl2 Menggunakan Response Surface Method . Sutrisno; Emmy Darmawati; Rokhani Hasbullah; Harli Prawaningrum
Jurnal Ilmu Pertanian Indonesia Vol. 18 No. 1 (2013): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Starfruits is one of exotic tropical fruits that have increasing its popularity both for domestic and global market due to its unique shape and taste, as well as their nutrition values. However, this fruit is considered perishable product with short self-life, thus the proper post harvest treatment should be done to prevent their quality after harvest. In general, the objective of this research was to determine optimum treatment of hot water treatment (HWT) and immersion period in CaCl2 solution using response surface method (RSM) for post harvest handling of starfruits in order to maintain its quality during storage. Among quality parameters tested, weight loss and hardness were found as the most responsive to the combination treatment. Parameter of weight loss rate showed a maximization response with stationary point of HWT’s temperature of 42 °C, expose period for 42 minutes, and immersion period in CaCl2 solution for 38 minutes with respond point of weight loss was 3.74%. Meanwhile, the hardness parameter achievement was the minimum with stationary point of HWT’s temperature of 48 °C, expose period for 35 minutes, and immersion period in CaCl2 solution fpr 35 minutes resulted respond point of hardness of 0.63 Newton. Interest level from the panelist were color, taste, texture and aroma, respectively, whereas the treatment combination that accepted by panelist were (45 °C, 65', 40'), (45 °C, 40', 15'), and (45 °C, 40', 40’).
Identifikasi Perubahan Mutu Selama Penyimpanan Buah Manggis Menggunakan Near Infra Red Spectroscopy . Sutrisno; Yohanes Aris Purwanto; Emmy Darmawati; Enrico Syaefullah
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 2 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

One of quality changes during storage of intact mangosteen fruit is firmness. This occurrence was predicted to have associate with moisture content in the pericarp. The objective of this research was to determine the correlation between moisture content and firmness, and to predict moisture content changes based on reflectance spectrum of near infra red (NIR). The correlation between moisture content and firmness at 13 °C is y = 0.07972x2 – 9.833x + 305.9 while at room temperature showed y = 0.1207x2 – 14.89x + 460.8; in which y refers to firmness and x refers to moisture content in pericarp. The calibration and validation evaluation using partial least square of moisture content resulted in NIR and oven method showed that the magnitude of r is 0.758-0.882; RMSEC and RMSEP is 0.09-0.39%; CV<5% is at 2.5-3.3%. Moisture content prediction using NIR reflectant spektrum is y (temperature:8 °C) = -0.057x + 65.14; y (temperature 13 °C) = -0.253x + 64.96; y (room temperature) = -0.421x + 64.76. 
Pengaruh Pupuk terhadap Pertanaman Kacang Hijau dan Residunya pada Tanaman Kacang Tunggak Sri Ayu Dwi Lestari; . Sutrisno; Henny Kuntyastuti
Jurnal Ilmu Pertanian Indonesia Vol. 23 No. 1 (2018): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (245.843 KB) | DOI: 10.18343/jipi.23.1.21

Abstract

The objective of this research was to determine the effect of fertilization on four varieties mungbean in ultisol acid soils and its residual on cowpea. The experiment was conducted at the screen house of Indonesian Legumes and Tuber Crops Research Institute (ILETRI), Malang, East Java, from November 2014-April 2015. Two types of research conducted sequentially, the first planting was four mungbean varieties and the second planting was cowpea (continued from the first planting) without additional fertilizer. This experiment was laid out in split plot design, replicated three times. In the first planting, mungbean as the main plot, namely Kenari (V1), Murai (V2), Kutilang (V3), and Vima 1 (V4). Fertilizer rates as the sub plot, namely control or without fertilizer (P0), 300 kg Phonska/ha (P1), 1500 kg cow manure/ha (P2), 3000 kg cow manure/ha (P3), and 5000 kg cow manure/ha (P4). The cowpea variety used in the second planting was KT 4, with the experiment design following the first planting. The results from first planting showed that growth of mungbean varieties was relatively same at ultisol acid soils, and seed yield can increase by application 300 kg/ha Phonska or 3000 kg cow manure/ha. The growth of cowpea showed the best result on both fertilizers indicating the presence of fertilizer residue from first planting.