Pertumbuhan Jintan Hitam (Nigella sativa L.) pada Tingkat Naungan dan Pemupukan Nitrogen yang Berbeda

Abstract

ABSTRACT<br /><br />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.<br /><br />Keywords: flowering, high altitude, leaf, tropic<br /><br />

Saurophus androgynus L. Merr. response to different shades intensities and fertilizer rates

“…The weight of black cumin harvested parts only decreases when shaded with an intensity of 75% and can still survive up to 50% shading [21]. The role of light in plant metabolism is hindered, leading to a decrease in biomass in Calopogonium mucunoides plants [22].…”

Produktivitas Tanaman Trichanthera gigantea pada Berbagai Taraf Naungan dan Pupuk Kandang Kelinci

“…Hasil penelitian Tripatmasari et al (2010), interaksi antara naungan dengan pupuk dari kotoran sapi berpengaruh terhadap jumlah daun pada 84 HST tanaman pegagan. Semakin tinggi naungan akan meningkatkan tinggi tanaman, jumlah daun, luas daun dan jumlah bakal bunga, tetapi menurunkan jumlah kapsul terbentuk, ketebalan daun, dan bobot brangkasan tanaman jintan hitam (Nigella sativa L.) (Setiawati et al, 2018).…”

Peningkatan Produksi Jintan Hitam (Nigella sativa L.) dengan Pemberian Asam Humat dan Waktu Panen Berbeda

“…Jumah kapsul pada penelitian ini lebih banyak dibanding dengan penelitian sebelumnya di Indonesia yang mampu menghasilkan 26.21 kapsul (Al Asad, 2019), 13.87 kapsul (Mardisiwi et al, 2018) dan 13.20 kapsul (Setiawati et al, 2018) dengan waktu pemanenan pada tingkat kematangan sempurna. Jumlah kapsul di India mencapai 19 kapsul (Giridhar et al, 2017), Turki 7.7 kapsul (Kara et al, 2015), sedangkan di Iran 11.2 kapsul (Safaei et al, 2014).…”