[EFFICIENCY OF LAND USE IN MULTIPLE CROPPING SYSTEM WITH VARIOUS CORN PLANT AND MUNG BEAN VARIETIES]. This study aims to find out the precise planting distance of corn with mung bean varieties that are suitable for increasing the efficiency of land use in terms of ecology and agronomy. Research has been carried out in the agricultural land in September 2018-January 2019 using a split-plot design. The main plot of planting spacing of corn which is 60 cm x 30 cm, 90 cm x 30 cm, and 120 cm x 30 cm, subplots ie mung bean varieties (Kutilang, Vima-1, Vima-2, Vima-3). As a comparison of intercropping systems, monocultures are cultivated by corn and mung beans. The results showed that in general intercropping of maize and mung bean NKL> 1, ecologically and agronomically efficient. However, this efficient level can be distinguished based on the spacing of corn and mung bean varieties. The best ecological efficiency at 120 cm x 30 cm corn spacing, while the best agronomic efficiency in Virna-3 mung bean varieties.

Peanut plant production has decreased almost every year, caused by several factors such as cultivation techniques, diseases, varieties, competition with other commodities and the increasingly narrow land area. One effort to improve the yield of peanuts by optimizing ultisol land for cultivation of plants. Ultisol soil is one of acid soils, high Al content, low organic matter content, and low cation exchange capacity. Provision of fertilizer is one effort made to maximize the use of ultisol land. This study aims to determine the optimal dose of cow manure and phosphorus fertilizer for peanut plants and to determine the dose of cow manure and the appropriate dose of phosphorus fertilizer for peanut plant. The design used in this experiment was Randomized Complete Block Design (RCBD) with two factors arranged factorially. The first factor was dosage of cow manure consisting of 4 treatment levels i.e. 0 ton ha-1, 10 ton ha-1, 20 ton ha-1 and 30 ton ha-1. The second factor is phosphorus fertilizer (SP-36) consisting of 3 levels i.e. 0 kg ha-1, 100 kg ha-1 and 200 kg ha-1. From these two factors, there were 12 treatment combinations each treatment was repeated 3 times, so that 36 experiments were obtained. The results showed that the dosage of cow manure did not significantly affect the growth and yield of peanut plants. The dosage of phosphorus fertilizer did not significantly affect all variables of observation except on seed weight. The combination of dosage of cow manure and phosphorus fertilizer has no significant effect on the growth and yield of peanut plant. Keywords: Peanut, Cow Manure, Phosphorus and Ultisol

Taro (Colocasia esculenta L. Schott) is a plant that has an excellent economic and healthy value, as well as a great potential development of Bengkulu coastal area. That is because taro has wide adaptability, and can be consumed both as a staple food and healthy food alternative. This research was conducted to study the vegetative growth of two cultivars of taro given four different doses of nitrogen. This study applied a Randomized Complete Block Design (RCBD) with two factors. The first factor was the cultivar of taro consisted of two levels, namely Taro Satoimo (T1) and the Taro Local (T2). The second factor was the doses of nitrogen fertilizer which consisted of four levels namely: N0 = 0 kg / ha (control), N1 = 50 kg / ha (2.6 g, N2 = 100 kg / ha, and N3 = 150 kg / ha. Thus, obtained eight treatment combinations. Each treatment was repeated three times to get 24 plots. The results showed that based on increased vegetative growth, the cultivar Satoimo has a faster response than local cultivar. Satoimo has demonstrated another advantage because it produced some leaves and number new shoot. The best dose of nitrogen fertilizer on the vegetative growth of taro in the coastal area of Bengkulu is 150 kg/ha.

Bengkulu province area elevating from 0 m to over 1000 m above sea level possesses high rice germplasm diversity. To obtain salinity controlling gene(s) from those germplasm, it is required to determine a suitable protocol. This research was objected to determine NaCl concentration to select Bengkulu rice landraces. The standard most salinity tolerant genotype used in this research was 'Kuning', a local variety usually grown on tidal area of Seluma Regency for generations. The growing media was Yoshida nutrient culture supplemented with a series of NaCl concentration of 0, 2000, 4000, 6000, 8000 or 10000 ppm. Observation was done every 2 days to find out the response pattern of rice seedling growth on different NaCl concentration. NaCl stress level was determined at 90% seedling dead (LC90) at the eighth day. The results showed that the increase of plant height was deceased at concentration of 6000 ppm. Based on the mathematical equation generated from the percent mortality data distribution, the LC 90 was at 3910 ppm NaCl concentration.

Talas (Colocasio esculenta (L). Schott) merupakan salah satu komoditas pangan yang belum termanfaatkan secara maksimal. Potensi  komoditas tersebut belum didukung dengan data yang baik. Untuk menggali potensi yang dimiliki tanaman talas perlu dilakukan pendataan sifat pentingnya dengan melakukan karakterisasi. Karakterisasi dapat dilakukan berdasarkan karakter morfologi dan fisiologi tanaman. Penelitian ini bertujuan untuk mengidentifikasi penampilan 10 genotipe talas pada fase vegetatif di lahan pesisir. Penelitian ini dilaksanakan pada bulan Juni sampai Agustus 2015 di Kelurahan Sukamerindu, Kecamatan Sungai Serut, Kota Bengkulu dengan ketinggian tempat + 14 m dpl. Penelitian ini menggunakan Rancangan Acak Kelompk Lengkap (RAKL) dengan 10 genotipe talas dan masing-masing perlakuan diulang 3 kali sehingga diperoleh total 30 unit percobaan dengan total 240 tanaman. Hasil penelitian menunjukkan bahwa secara morfologi talas dikelompokkan berdasarkan warna batang (Putih :  genotipe T2, T4, T5, T6, T7, T8 dan T9, pink pucat : genotipe T1, T3, orange kemerah mudaan : genotipe T10), warna daun (Hijau : genotipe T2, T3, T4, T5, T6, T8, T9 dan T10, hijau tua : T7, hijau keunguan : T1), bentuk daun (perisai :  genotipe T1, T6, delta : genotipe T2, T3, T7, Oval : genotipe T5, T8, T9 dan T10,  hati : genotipe T4), ujung daun (Runcing: genotipe T1, T2, T3, T4, T9, T10, tumpul : genotipe T5, T6, T7, bundar : genotipe T8) tepi daun (Bergelombang : genotipe T1, T2, T3, T5, T6, T8, T9, T10, rata : genotipe T4,T7), dan warna tangkai daun (Hijau : genotipe T2, T4, T10, hijau kekuningan : genotipe T5,T8,T9, hijau kebiruan : genotipe T7, hijau keunguan : genotipe T3, T6, hitam : genotipe T1).  Terdapat beda sangat nyata antar 10 genotipe talas dalam hal tinggi tanaman, tingkat kehijauan daun, diameter batang semu dan jumlah anakan.