Faridah, dan Didah Nur
bogor agricultural university

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Keragaman Kualitas Buah pada Dua Varietas Okra (Abelmoschus esculentus L. Moench) dari Umur Panen Berbeda Aplugi, Dewie Maria Agustien; Melati, Maya; Kurniawati, Ani; Faridah, dan Didah Nur
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 47, No 2 (2019): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy

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Abstract

Okra (Abelmoschus esculentus L. Moench) is a functional vegetables that has high economic value and it is usedas health purposes due to high bioactive compounds and dietary fiber contents. Okra pod is gradually harvested followsflowering time. The purpose of this study was to evaluate the effect of harvest age on Nitrogen (N), Phosphorus (P), Potassium(K), pigment and phenolic contents of two okra varities. The experiment was conducted from October 2017 to February 2018at IPB experimental station in Leuwikopo, Dramaga, Bogor. The experimental field is located at ± 185 m asl with 6033’49.3”S and 106043’30.7” E. The experiment used single factor, namely harvest time, in randomized complete block nested in factorof okra variety with 4 replicates. The varieties of okra were Zahira (red okra) and Naila (green okra), while harvest agesconsisted of 5, 7, 9, and 11 days after the anthesis (DAA). The results of the study showed significant effect of harvest age onN, P, anthocyanin and phenolic contents. Okra pod harvested at 5 DAA, had the highest N, P and anthocyanin levels; whilethe highest phenolic level was obtained from okra pod harvested at 7 DAA. There were interactions effect between harvesttime and okra varieties on chlorophyll and carotenoid contents. The red okra harvested at 5 DAA had the highest content oftotal chlorophyll (536.83 μg g-1) and carotenoid (147.79 μg g-1).
Pertumbuhan Jintan Hitam (Nigella sativa L.) pada Tingkat Naungan dan Pemupukan Nitrogen yang Berbeda Setiawati, Evi; Kurniawati, Ani; Widodo, Winarso Drajad; Faridah, dan Didah Nur
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 46, No 2 (2018): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy

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Abstract

Black cumin (Nigella sativa L.) is an introduced medicinal plant therefore requires investigations to establish recommended cultivation procedure in tropical areas. Black cumin seeds contain a various bioactive compounds not only for culinary but also for medicinal purposes. This study was conducted to investigate the effect of nitrogen rates and shade levels on growth of Black cumin. The activity was carried out in Pasir Sarongge experimental station, Cianjur, West Java (1,117 masl). The research was arranged in nested design with three replications.  Nitrogen rates was nested within shading levels. The shading levels consist of 0%, 25%, 50%, and 75% which resulted in light intensity of 27,800, 17,400, 11,900, and 1,600 lux respectively. The Nitrogen rates consisted 0, 60, 120, and 180 kg ha-1. The results showed that shading up to 50% did not affect plant growth and did not reduce seed production. However, shading up to 75% prolong the vegetative period, decreased leaf thickness and plant dry weight. The higher the shading level up to 50%, the higher the plant height, leaf area, number of leaves and number of flower, but not number of branche. Nitrogen fertilizer 60 kg ha-1 increased number of blooming flower and number of capsule set.
Hasil dan Kualitas Okra (Abelmoschus esculentus L. Moench.) Merah dan Okra Hijau dengan Jenis Pupuk yang Berbeda Manik, Auhge Eva Sari; Melati, Maya; Kurniawati, Ani; Faridah, dan Didah Nur
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 47, No 1 (2019): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy

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Abstract

Okra fruit contains phenolic compounds as natural antioxidant. The aim of this research was to analyze the effect of different types of fertilizers on production and quality of two okra varieties. The experiment was conducted in October 2017 to February 2018 at Bogor Agricultural University experimental field at Leuwikopo, Darmaga, Bogor (-6033’49.3”SL, 106043’30.7’’EL). The experiment used nested randomized complete block design with 2 factors and 4 replications. The first factor consisted of two okra varieties with different colour (red and green okra). The second factor was fertilizer types consisted of no fertilizer, organic (cow manure), combination of organic + inorganic, and inorganic fertilizer. The results showed that fertilizer types significantly affected plant height and fruit N content but did not affect fruit production. Red okra had a higher plant height, lower number of leaves and leaf K content than those of the green okra. The interaction effect of both factors was significant on total phenolic content in fruit and P content in leaf. The highest total phenolic content in fruit was showed by red okra with inorganic fertilizer, although it was not significantly different to those of red okra with combination organic + inorganic fertilizer, and also to green okra with organic fertilizer. The highest P content in leaf was found in red okra without fertilizer, however it was not significantly different to red okra with combination organic + inorganic fertilizer, green okra with organic fertilizer, and green okra with inorganic fertilizer.Keywords: inorganic fertilizer, leaf nutrient, organic fertilizer, phenolic compound