Article Per Year (5 Year)
p-Index From 2021 - 2026
1.285
P-Index
This Author published in this journals
All Journal COCOS
Leo H. Kalesaran
Unknown Affiliation
Agriculture, Biological Sciences & Forestry

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search
Journal : COCOS

 1 
KAJIAN PENGGUNAAN PIPA PVC BENTUK BULAT DAN TALANG TRAPESIUM SEBAGAI INSTALASI IRIGASI DALAM USAHA HIDROPONIK TANAMAN SELADA (Lactuca sativa L.) Ahmad Dalanggo; Leo H. Kalesaran; Daniel P. M. Ludong
COCOS Vol. 14 No. 3 (2022): EDISI JULI-SEPTEMBER 2022
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v8i8.38280

Abstract

Abstract This study aims to examine evapotranspiration in round pipes and trapezoidal gutters and their relationship to plant growth, assess the effect of microclimate on plant growth and production yields, calculate air efficiency, and analyze profit and loss using both types of pipes. This study was designed as an experimental study using 3 trapezoidal gutters and round pipes with a length of 4 m which were integrated into a water irrigation flow system using a pump, and each pipe used 20 planting holes. The results showed an average trapezoidal gutter evapotranspiration of 2334 , 67 ml of planting and in round pipes the average was 1955.50 ml of planting, the temperature in the pipe was around 29°C, the air temperature was around 30°C and the humidity was around 80%. plants in trapezoidal gutters had an average height of 17.49 cm, number of leaves 28, plant diameter 26.39 cm, leaf width 10.73 cm, leaf length 17.32 cm and total plant weight of 100.08 g, and plants in pipes spherical has an average height of 14.78 cm, number of leaves 24.58 strands, plant diameter 22.99 cm, leaf width 9.63 cm, leaf length 14.27 cm and total plant weight 65.52 g. liter of water in trapezoidal gutters produces 42.87 g of plant biomass, and every liter of water in the pipe produces 33.51 g of plant biomass, then the cultivation of circular lettuce plants in an area of 400 m2 using trapezoidal gutters gives sales results ranging from Rp. 116,937,216 every 1 year and lettuce plants on round pipes provide income of around Rp. 75,769,344 every 1 year.. Key words: Hydroponics, Hydroponics Irrigation, Hydrponics Lettuce
RESPON PERTUMBUHAN DAN PRODUKSI TANAMAN MENTIMUN (CUCUMIS SATIVUS L) YANG DITANAM PADA BEBERAPA UKURAN VOLUME MEDIA TANAM DALAM POLYBAG DENGAN TEKNIK IRIGASI TETES Virsawan Paputungan; Leo H. Kalesaran; Ruland A. Rantung
COCOS Vol. 15 No. 1 (2023): EDISI JANUARI-MARET 20223
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.43099

Abstract

ABSTRACT This study aims to: 1. To measure the optimal amount of water use by the method of giving irrigation water, 2. To observe the relationship between the volume of planting media and the amount of irrigation water in cucumber plantations. This study was designed as an exploratory experimental research technique. Experiments were carried out on 5 polybag sizes/volume of planting media and each was repeated 3 times. The variables observed were the provision of water, number of leaves, number of fruit, fruit weight and shape of the root crown. The results of this study were 1. as much as 128,500 ml = 128.5 liters per plant, it turned out to be able to support and produce cucumber plants planted in polybags with the best production shown in experiments using 9 liter polybag sizes, 2. there was a positive response of plants to the treatment method drip irrigation and the amount of water given, and also showed a consistent relationship between plant vegetative growth (number of leaves) and the number and weight of fruit produced, namely the more leaves produced, the longer the roots and the width of the roots produced, the higher the number and the weight of the resulting fruit, where the highest production was achieved in the P5 treatment with an average number of 10 fruits/pot with a weight of 6,149 -6,354 kg. key words ; Cucumber, size of planting mediain polybag, drip irrigation.
KAJIAN PEMANFAATAN POMPA AIR BANTUAN PEMERINTAH UNTUK MENUNJANG IRIGASI PERTANIAN DI KABUPATEN Vilian F. Tumober; Leo H. Kalesaran; David P. Rumambi
COCOS Vol. 15 No. 2 (2023): EDISI APRIL-JUNI 2023
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

AbstactThis research was conducted to determine the feasibility of using pumps infulfilling water for plants so that the farming system. Support for groundwaterirrigation by using pumps for farming activities in Minahasa Regency. Based onthe description above, research will be carried out on "Studies on the use ofgovernment-assisted water pumps to support agricultural irrigation in MinahasaRegency". The results showed that the most water pump assistance was providedin 2018 in Tombariri District, and the least in 2020 in Langowan and KakasDistricts were all donated to farmer groups. The pump assistance provided by thegovernment to farmer groups is the TWP 150 type of water pump, in reality in thefield the types of water pumps provided by the government are all the same,namely the Tanikaya TWP 150 water pump type with gasoline. Interview dataobtained from farmer groups receiving water pump assistance indicated that thereare two sources of water at the pump location, namely rivers and springs. Theresults of a survey conducted showed that the pump placement locations of allthose distributed were not placed in a certain place or no one used pump houses,because their use was carried out on a rotating basis so that the pumps wereplaced according to the needs in the field. The results obtained were that the useof government-assisted water pumps was not optimized properly because most ofthe assistance was not used properly or was rarely used, with the reason thatrainfall was insufficient and there were also pumps provided by the governmentthat the pump components were not complete, there were also pumps that hadbeen provided. switch to another tool.Keywords : Water pump, irrigation, utilization
RANCANG BANGUN SISTEM KONTROL OTOMATIS SENSOR KELEMBABAN TANAH PADA MEDIA TANAM POLYBAG Deivana Kamagi; David P. Rumambi; Leo H. Kalesaran
COCOS Vol. 15 No. 2 (2023): EDISI APRIL-JUNI 2023
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

AbstactSoil Moisture is the amount of water stored between the pores of the soil. Soilmoisture conditions are very dynamic, this is caused by absorption through the soilsurface of transpiration and percolation. Knowing the differences in surface soilmoisture can help optimize soil management in a field, so that productivity can bemaintained. Water obtained by the soil consists of two ways, namely naturally fromrainwater and artificial processes such as irrigation. One of the factors that affectsoil moisture is watering. Watering is something that cannot be released inmaintaining soil moisture. One effort that can be done is to provide irrigation water,namely by using an automatic system based on a microcontroller using sensors to dowatering according to water needs without having to use human power/operators.This research was conducted at the Greenhouse of the Faculty of Agriculture,University of Sam Ratulangi for one day. Data collection was carried out at intervalsof two hours with three treatments namely A 70% humidity standard, B 80% humiditystandard, C 90% humidity standard indicating that the irrigation system using theArduino Uno microcontroller can detect changes/decreases in soil moisture in theexperimental polybags, and can respond and command watering activities to restorerelative humidity conditions.Keyword : soil moisture, humidity, automatic control
Co-Authors Ahmad Dalanggo Daniel P. M. Ludong David P. Rumambi Deivana Kamagi Ruland Rantung Vilian F. Tumober Virsawan Paputungan