Soybean extensification on mineral and peaty mineral soils of tidal land are limited by

[GROWTH AND YIELDS OF SORGHUM VARIETIES TREATED WITH VARIOUS DOSES OF NPK FERTILIZER IN COASTAL LAND]. Sorghum has a potential to be developed in marginal land in coastal area. Drought stress and low availability of utrients in the coastal area are the main problems in growing sorghum.  Introducing the drought tolerance variety is one solution to overcome the drought stress in coastal land in order to improve sorghum yields. In addition, the treatment of NPK fertilizer is needed to fulfill the nutrients requirements for growth and yields. This research aims to determine the best sorghum variety and an appropriate dose of NPK fertilizer for the growing sorghum in coastal land. Field experiment was conducted at the coastal area in Bengkulu City from August until November 2021. The experiment was arranged in Randomized Completely Blok Design with two factors. That were sorghum varieties (Numbu, Super 2 and Kawali) and NPK fertilizer doses (150 kg/ha, 300 kg/ha and 450 kg/ha). The results showed that the interaction between sorghum variety and NPK fertilizer dose were not significant on the growth and sorghum yields. Numbu varieties produced the highest panicle weight per plant of 69.42 gram. The research concluded that Numbu variety showed the best growth and yields compare two other varieties. The  maximum growth and yield  of sorghum in coastal land were observed at NPK 450 kg/ha dose.

Increasing soybean production can be done by growing the crops in marginal soil, such as saline soil. Therefore, saline-tolerant genotypes are important to support the cultivation. The objective of the experiment was to evaluate the performance of 18 soybean varieties grown under salinity stress. The experiment was done from May to July 2021 at the greenhouse of the Department of Agronomy, Faculty of Agriculture, Bengkulu University, about 10 m above sea level. Soybean seedlings were grown in 10 cm diameter plastic pots fertilized with AB-mix solutions supplemented with 0 or 6 dSm-1 NaCl for 15 days. The growth and stress-tolerant index of the seedlings were measured. The results showed that soybean variety had different growth as responses to salinity. Moreover, salinity stress imposed at 6 dSm-1 NaCl significantly reduced crops growth and promoted leaf senescence. We found that 18 soybeans varieties were classified as salinity tolerant at 6 dSm-1. Keywords: saline, soybean varieties, tolerant

Drought stress is an inhibiting factor for plant growth and development. Drought stress reduces the seed to germinate and to grow on different varieties. Response to germination to drought stress is the beginning signal of drought tolerance for several varieties of plants. The purposes of this study were to evaluate the germination response of 16 soybean varieties, to determine the degree of drought stress tolerance of 19 soybean varieties, and to identify varieties that are tolerant as well as sensitive to drought which stimulated by polyethylene glycol (PEG). Soybean seeds were added to sand media containing PEG (6000) at concentrations of 0%, 5%, 10%, 15%, and 20% which were equivalent to 0, -0.03 Mpa, -0.19 Mpa, -041 and -067 Mpa for 8 days. The germination responses by calculating the vigor index, germination, root length, hypocotyl length, root length and hypocotyl length ratio, fresh weight sprouts. Inhibition of germination increases with a reduction in water potential. Each soybean seed tested showed different germination responses which were different under drought stress conditions. The results of 19 varieties showed only one variety which was identified to be drought-tolerant, however, 9 varieties were identified as medium droughttolerant, and 9 varieties were identified as sensitive to drought. The variety that was tolerant to drought was Gepak Kuning. Varieties that were sensitive to drought were Dena 2

This devotional activity aims to improve farmers' skills in the cultivation of black soybeans and increase the selling value of black soybeans which can ultimately increase farmers' incomes in Kemumu Village. Devotional activities are designed in 3 types of activities that are mutually sustainable, namely (1) education and extension of black soybeans, (2) the manufacture of black soybean planting experiments, and (3) training and the making of black soybean processing. The results of the activity showed that the education and counseling carried out by the devotional team was able to increase knowledge about black soybeans both planting techniques and processing of seed products. Cultivation of soybean plants and the manufacture of processed soybean seeds into tempe, tofu, and soy sauce have been successfully carried out by the farmer's group of Kemumu Village, North Bengkulu. The result achieved by the black soybean variety Detam 4 is 1.39 tons/ha. To follow up on this activity, the proposed suggestions include: (1) in the future members of the target farming group are expected to continue to carry out the practice of cultivating black soybeans on a wider scale (2) members of the target farming group to keep making tempe and soybeans on an industrial scale to increase household income, (3) to the government to provide a channel of funds to meet adequate equipment resources in the production of tofu and industrial-scale tempe.