A phenological study with the aim to elucidate flower and fruit development stages in species of Uncaria gambir was conducted in field trial of agricultural faculty of Andalas University-West Sumatra. Observation during flower and fruit organ development was done in eleven inflorescences. Quantitative and descriptive data were collected during one season of flowering time. Phenology of flower and fruit development could be classified in five stages, namely F0 (flower initiation), F1 (small bud scale), F2 (large bud scale), F3 (anthesis, flower opening) and F4 (fruit development). All these events had average completing time in 112 days, and could be detailed as follows: flower initiation stage (F0) took place in 20 days, small scale bud stage (F1) occurred in 27 days, and large scale bud and anthesis stage (F0 and F3) each took place in 5 days, meanwhile fruit development stage (F4=S0) would complete in 53 days. This result should be useful information especially for creating breeding programme in Uncaria gambir species.

This study aims to identify the problems and develop rice agribusiness in

System of rice intensification (SRI) is a method of rice cultivation which has proven to increase the rice yield if comparing to the conventional method. The research aimed to study the influence of flooding of land to phyllochron emergence and tiller of rice pla nt. The research was conducted in farmer field in Koto Tangah, Padang from May-June 2018. Randomized block design in split-plot was used in this research. The main plot was the inundation time before planting in 7, 14, 21 and 28 days. Three replications were used in this research. The subplot was the three rice varieties, Pandan Wangi, PB 42 and Kuranji 012. The result showed that variety PB 042 and Kuranji 012 in 14 days of inundation were the best variety with the amounts of tillers were 40.

Rice is the main staple food for half of the world’s global population. One of the superior rice variety indicators is resistance to brown planthopper. The study was aimed to analyze several West Sumatera rice varieties against brown planthopper. The research was conducted in the screen house, Faculty of Agriculture, Andalas University, Padang, Indonesia from April to October 2018. A completely randomized design was used in this study. Nine rice genotypes and one control variety were used in this assay. The treatment was replicated three times. The result showed that Batang Sungkai was the best genotype in resistance based on the attack intensity.

Investigations were conducted at nine locations with elevation ranging from 570 to 1616 m above sea level in the Province of West Sumatera, Indonesia to evaluate the performance of some wheat genotypes originated from Slovak Republic. The experiments had been conducted from July to December 2011. The treatment consisted of 12 genotypes of Slovakian wheats (SO-1, SO-2, SO-3, SO-4, SO-5, SO-6, SO-7, SO-8, SO-9, SO-10, IS-Jarissa, and IS-1247) together with two wheat genotype of Indonesian origin (Nias and Dewata). The experimental units were arranged in a Completely Randomized Block Design with three replicates. Results indicated that most wheat genotypes exhibited similar characters examined while few others exhibited superior characters. Genotype Dewata had superior grain yield compared to the other genotypes. Some genotypes of Slovakian wheat (SO-3, SO-8, SO-9, dan SO-10) have good potentials in the following variables of time to heading, time to harvest, number of productive tillers, number of seeds per earing, seed weight per earing, and yield.