Modified Cassava Flour (MOCAF) which has been produced by small industries has a particle size that is not yet the Indonesian National Standard (SNI), so the quality needs to be improved using a sieving machine. The objectives of this study are 1) to analyze the design requirements of the sieving machine 2) to determine the design concept 3) to analyze the technique 4) to design the sieving device in the engineering drawing. The method used in this research is observation, interview and French design method. Based on the results of the needs analysis, it was found that the design concept of the MOCAF sieve tool that uses an electric motor, is easy to operate, is in accordance with the production capacity, has an SNI size mesh and the material used is affordable. The results of the morphological analysis show that the design concept that can be developed is the design concept 1. The results of the technical analysis show that the linear velocity of the belt is 5.58 m / s and the tensile stress at T1 is 0.23 MPa. The dimensions obtained based on the design results are 5 cm pulley length, 99 x 59 x 10 cm mesh dimension, 100 mesh size and 108 x 80 x 95 cm machine frame dimensions. Keywords: analysis, design, MOCAF, morphology, sieving

This research conducted to designed, implemented, and tested an automatic rain pipe fertigation system using temperature and soil moisture sensors. The system applied to three irrigation treatments, namely manual fertilization, semi-manual fertilization, and automatic fertigation. The automatic fertigation actuator setting point is at temperature of  ≥ 31 ° C and humidity of ≤ 60% to turn on the water pump and nutrient pump then the water pump will shut down when the temperature value of 25 °C and humidity of  ≥ 80%. The results showed a significant difference in the use of irrigation water based on variance test results with an error value of 5%. The use of water from automatic fertigation is 12.770 ml or 65.9% more efficient than manual irrigation with the same growth in plant height. The height of oil palm plants in the main nursery with automatic fertigation is higher on days 7 to 12. Automatic fertilization requires a fertilizer of 1.8 tons per ha, less than manual fertilization which reaches 3 tons per ha. Keywords: fertigation, microcontroller, oil palm, sensors, soil moisture