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Peanut is relatively tolerant to drought stress but the pod yield is influenced by soil moisture availability especially during its critical phases. The experiment was objected to study yield response of genotypes and their tolerance to drought stress during generative growth stage. The experiment was conducted at Muneng Research Station, East Java with D3 climate type. The experiment was undertaken during dry season to avoid interference from rains to the treatment. The split-plot design with three replications was applied. The main plot was watering treatment i.e. water available during the growing season and water available during vegetative growth (up to 50 DAS). The subplots were 20 peanut genotypes. Weeding, pest and disease controls were intensively undertaken. The results indicated that the average dry pod yield of 20 genotypes under well watered and drought stress treatments were 2.345 t and 1.585 t/ha. Based on MP, GMP, STI, RED, TOL, and SSI it can be concluded that G1 and G12 were genotypes with high yield and drought tolerant but huge yield reduction under water-stressed condition. G8 was drought tolerant genotype with little yield reduction under stress condition. G11 was susceptible to drought with low productivity and low yield reduction under stress condition.

Stress from excess water is one of the most harmful limiting factors in soybean production during the wet season. This research aimed to study the response of soybean genotypes to waterlogging. Ten soybean genotypes were grown in the screen-house of the Indonesian Legume and Tuber Crops Research Institute (ILETRI), Malang, Indonesia. The experimental design was a randomized block with three replicates. Waterlogging treatment was imposed at 10 days after planting (dap) for 30 days. Changes in the normal environment to waterlogging directly influence the agronomic character’s performance of soybean plants. Soybean agronomic characters including shoot length, root length, shoot dry weight, root dry weight, the number of reproductive branches, plant height, and number of pods per plant were most severely affected by waterlogging, and contribute to the seed yield reduction. Waterlogging during vegetative phase reduced seed yield by 93.82% (14.89 g plant−1 in normal condition to 0.86 g plant−1 in waterlogged soil). Wilis variety produced high yield in both normal and stressed environments, hence, it is categorized as tolerant to waterlogging in the vegetative phase. Sinabung and G511H/0815-2-4-49 are considered as susceptible genotypes due to the highest yield reduction.

In South Borneo, sweet potato baking is very good market and has to be shipped from Java for fulfilling the demand of the people. Preparation of sweet potato as additional food is only simple by put in oven, so it is sold fresh from the oven. In 2015, description of area mainly physical and chemical aspects were undertaken to provide adequately data. Analysis of soil sample was done for the parameters of pH, C organic as well as N, P and K. Based on this analysis, the treatment was designed based on practical work. Apex vine cutting of several sweet potato varieties were taken from ILETRI to Borneo during 2016 and 2017. In 2017, two varieties were used as the main plot, and five inputs were determined as subplot. Therefore, ten combination treatments were laid down in three replications, in the plot size of 6.0 m x 5.0 m. Planting distance of sweet potato was 100 cm x 25 cm. During 2017, planting was done at February and harvesting was undertaken on July. Growth and yield components were analyzed by statistical procedure by using MSTATC. Statistical analysis indicated that there was not significantly affected by interaction between variety and agronomic inputs as well. However, both main and subplot were separately affected growth and yield. ILETRI variety Beta3 gave better yield with agronomic input1 able to obtain 15.39 t ha-1. However, the increase of agronomic input did not follow the increase of tuber yield. Int. J. Agril. Res. Innov. Tech. 10(2): 29-34, December 2020