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All Journal EUGENIA Jurnal Agroekoteknologi Terapan COCOS
Selvie Tumbelaka
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Agriculture, Biological Sciences & Forestry Environmental Science

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Pemberian Kompos Jerami Padi Terhadap Pertumbuhan dan Produksi Tanaman Jagung Manis (Zea mays saccharata Sturt) Albert T.H. Samosir; Jeanne M. Paulus; Doortje M.F. Sumampow; Selvie Tumbelaka
COCOS Vol. 6 No. 12 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i12.8489

Abstract

ABSTRACT This research aims to study the application of Rice Straw Compost on Growth and Production of Sweet Corn ( Zea mays saccharata Sturt ) This study was conducted in the village of Tomohon sub district Taratara Dua West , Tomohon for 3 ( three ) months starting from the month of August to October  2014.  Experimentalwas design arranged in a Randomized Block Design (RBD), consisted of five treatments.It is treatment wasreplicated three times. The treatments waswhitout rice straw compost (K0), 5 ton/ha of rice straw compost (K1), 10 ton/ha of rice straw compost (K2), 15 ton/ha of rice straw compost (K3), and 20 ton/ha of rice straw compost (K4). Data was analysed using variance analysed Least Significant Difference ( LSD ) at level 5%. Results slowed that the treatment significantly effected on growth and production of sweet corn  ( Zea mays saccharata Sturt ) that were plant height, number of leaves , cob length, cobweight, but not significant to cob circle  effect  Keywords : Sweet Corn, Organic fertilizer
PERTUMBUHAN DAN PRODUKSI JAGUNG PULUT LOKAL (Zea mays ceratina Kulesh) PADA BEBERAPA DOSIS PUPUK NPK Juandi Tengah; Selvie Tumbelaka; Marjam M. Toding
COCOS Vol. 8 No. 2 (2017)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.14909

Abstract

ABSTRACT  The purpose of this study was (1) to know the growth and production of local waxy corn on various dosage of NPK fertilizer ; (2) to obtain the proper dosage of fertilizer in growth and production of local waxy corn. This study was conducted in Insil village, Passi Timur District, Bolaang Mongondow Regency with attitude 1100 meters above sea lever, from June to August 2016. Using a Randomized Block Design with five treatments of NPK fertilizer dosage which are P0 = 0 kg ha-1 of NPK fertilizer  (as a control), P1 = 200 kg ha-1 of NPK fertilizer, P2 = 300 kg ha-1 of NPK fertilizer, P3 = 400 kg ha-1 of NPK fertilizer, and P4 = 500 kg ha-1 of NPK fertilizer. The results showed that treatmen of NPK fertilizer dosage only had effected on plant height of local waxy corn but had no effected on length of cob, diameter of cob, fresh weight of with corn husk and fresh weight of cob without cornhusk. Keywords : Waxy corn, fertilizer, production
RESPONS PRODUKSI TANAMAN JAGUNG (Zea mays L.) TERHADAP PEMANGKASAN DAUN BAGIAN BAWAH Christian T. Rompas; Selvie Tumbelaka; Deanne A. Kojoh
COCOS Vol. 10 No. 4 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i2.23408

Abstract

ABSTRACT The purpose of this research was to examine the response of the maize production towards lower leaves pruning. This research was conducted in Malalayang Satu Timur, Manado City, North Sulawesi in the period of March to July 2018. This research was arranged in a Randomized Block Design consisting of three treatments, namely (P1 = No trimming, P2 = Trimming 3 Lower Leaves, P3 = Trimming 5 Lower Leaves). The results indicated that lower leaves pruning on maize has no effect towards the diameter and length of cob, number of seeds per cob weighing to 1000 seeds, as well as the seed weight per cob. Lower leaves pruning is ineffective because assimilates sourced from the lower leaves are more focused on the development of plant roots. This is presumably due to the hybrid maize varieties, which has the capability to maintain the quality of the plants, therefore pruning 3 and 5 lower leaves has no significant effect towards the seed weight per cob and the weight of 1000 seeds. In this research the lower leaf trimming did not significantly affect the production of corn plants, but in the observation variables, the weight of 1000 seeds increased when compared to the weight of 1000 seeds in the description of pioneer varieties. The average weight of 1000 seeds in this research was on pruning the lower 3 leaves of 375.85 g while in pruning the lower 5 leaves 361.13 g and the weight of 1000 seeds in the description of pioneer varieties was 311 g, this meant an increase. Further research is required by considering the location of the leaves to be pruning.
ANALISIS KUALITAS AIR IRIGASI AREAL PERSAWAHAN DI DESA RANOYAPO KECAMATAN RANOIAPO KABUPATEN MINAHASA SELATAN Eucharisty S. Rewur; J.V Bobby Polii; Selvie Tumbelaka
COCOS Vol. 11 No. 1 (2019): EDISI JANUARI-MARET 2019
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i7.26177

Abstract

ABSTRACT The purpose of this study was to determine the water quality in Ranoyapo Village, Ranoiapo District, South Minahasa Regency, which is used as irrigation water in the rice fields at Ranoyapo Village. This study was conducted for three months (3), from September to November 2018, the location of water sampling was at the part before entering the rice field and at the exit area at Ranoyapo Village, then has analyzed at the Manado Industrial Research and Standardization Laboratory Laboratory. The results of the analysis showed that the pH concentration before entering the expanse (6.71), on the exit part of the expanse (6.52) was in the good category. The concentration of DHL before entering the overlay (0.17830 ds / m) at the exit of the overlay (0.15880 ds / m) is in the good category. TDS concentrations before entering the overlay (244 mg / l), at the exit of the overlay (282 mg / l) in the good category. NO3-N concentration before entering the stretch (0.44 mg / l), at the exit of the stretch (089 mg / l) in the good category. The concentration of Clorida before entering the stretch (0,2178 me / l), at the exit of the stretch (0,2178 me / l) is in the good category. The concentration of Boron before entering the stretch (<0.08 mg / l), at the exit of the stretch (<0.08 mg / l) is in the good category. The concentration of PO4-P before entering the overlay (0.03 mg / l), at the exit of the overlay (0.09 mg / l) is in the good category. Potassium concentration before entering the stretch (3.49 mg / l), at the exit of the stretch (3.59 mg / l) is in the bad category. The results of the analysis of irrigation water quality in Ranoyapo Village with the parameters of pH, DHL, TDS, NO3-N, Clorida, Boron, PO4-P in good quality while Potassium in poor quality according to the comparison of Ayers and Wetscot irrigation water quality standards, 1985. Keywords: water quality, irrigation
RESPON PERTUMBUHAN DAN HASIL BAWANG MERAH (Allium ascalonicum L. var Lembah Palu) TERHADAP KONSENTRASI PUPUK ORGANIK CAIR Alfonsus Yudhanto Sara; Selvie Tumbelaka; Rinny Mamarimbing
COCOS Vol. 11 No. 1 (2019): EDISI JANUARI-MARET 2019
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i7.27293

Abstract

ABSTRACT Shallots (Allium ascalonicum L.) is one of the main vegetable commoditis in Indonesia and has many benefits. Shallots are included in the group of spices needed by household consumers as seasonings for cooking and raw materials for the food industry and traditional medicinal ingredients. Based on data from the National Nutrient Database shallots contain carbohydrates, sugars, fatty acids, proteins and other minerals needed by the human body (Waluyo dan Sinaga, 2015). The objective of research was to study the the growh and yield response of shallot (Allium ascalonicum L. var Lembah palu) on liquid organic fertilizer concentration. The research was conducted at field of Agriculture Faculty University of Sam Ratulangi in Manado from July to October 2019. This experiment was designed using a randomized block design with five treatments and five replications. The treatment was concentrations of liquid organic fertilizer which consist of five levels, ahat are ; Po = control, P1 = 1 ml/l water, P2 = 3 ml/l water, P3 = 5 ml/l water, and P4 = 7 ml/l water. Parameters include observations of plant height, number of leaves, number of tubers, fresh weight and day weight of tubers. The results of experiment showed that application of liquid organic fertilizer have an effect to the growth and yield of shallots. In the treatment of 5 ml / l concentration of water produced the highest average production with the number of tubers perump (11 tubers), fresh weight (57,298 grams), and dry weight (50,924 grams). Keywords: Shallot, Concentration, POC, Growth, Yield
POPULASI DAN INTENSITAS SERANGAN HAMA WALANG SANGIT (Leptocorisaoratorius) PADA BEBERAPA VARIETAS TANAMAN PADI SAWAH DI DESA TOLOTOYON KABUPATEN BOLAANG MONGONDOW SELATAN Ayu Ningsih Paputungan; Jantje Pelealu; Daisy S. Kandowangko; Selvie Tumbelaka
COCOS Vol. 12 No. 2 (2020): EDISI APRIL-JUNI 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i6.30823

Abstract

ABSTRAKThe research aims to find out: (1). The population of walang sangit pest in several rice varieties inTolotoyon village, Bolaang Mongondow Selatan Regency; (2). pest attack wit sangit on severalvarieties of rice in the village Tolotoyon Bolaang Mongondow Regency.The study was carried outin a rice-growing area owned by farmers in Tolotoyon Village, Bolaang Mongondow SelatanRegency. The duration of the study is 3 (three) months, from December 2019 to February 2020.Bandage using Random Group Design (RAK) with the treatment of rice plant varieties, namelyCiherang, Inpari 9, and Situ bagendiT and repeated three times. The research was conducted atthree locations, each measuring approximately one (1) hectare. Each location planted one variety.Sampling was conducted three (3) times. Sampling is carried out on plants that are ten weeks oldwith a retrieval interval of one (1) week. Parameter the number of nymphs and image caught.Observation of the intensity of pest attacks is carried out visually based on the symptoms ofWalang Sangit attack on the malaise of rice crops. Observations are made on generative phase riceplants. Parameter the number of malaises affected. The results showed that the highest walangsangit pest population was found in the Ciherang variety of 6.8 Walang Sangits, followed by Inpari9 which is 5.6 Walang Sangits and the lowest in Situ bagendit which is 3.1 The yield on walangsangit pest attacks on inpari varieties was 7.0 percent, followed by Ciherang 6.1 percent, whileSitu Bagendit 3.1 percent.The difference in population and intensity of Walang Sangit pest attackson some varieties of rice crops, caused by the character of rice crops, such as the number of shootsand the color of grain.Keywords : Rice varieties,Leptocorisa Oratorius, population, and intensity
KAJIAN MUTU BENIH TANAMAN JAGUNG PULUT (Zea mays ceratina L.) DI KABUPATEN BOLAANG MONGONDOW Risky Sekoh; Selvie Tumbelaka; Adeleyda M.W Lumingkewas
COCOS Vol. 13 No. 1 (2021): EDISI JANUARI-MARET 2021
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i2.32448

Abstract

ABSTRACTwaxy corn or glutinous corn is a special type of corn that has a delicious taste, is more savory, fluffier andsofter. Seed quality consists of three components, namely: physical quality, physiological quality, geneticquality. This study aims to determine and study the quality of waxy corn seeds in Bolaang MongondowRegency. The research was conducted in Manado. This research took place from September to October 2020.This experiment used a completely randomized design (CRD), with 3 (three) treatments, namely the source ofwaxy corn seeds from several villages in Bolaang Mongondow Regency consisting of treatment P1 = seedsfrom the village Treatment Threshold P2 = Seed from Pusian Village Treatment P3 = Seed from Insil Village.Each treatment was repeated 4 (four) times in order to obtain 12 experimental units. Result of the experimentshowed The waxy corn in Ambang Village has a different quality from the quality of the seeds from PusianVillage and Insil Village. The quality of seed in Desa Ambang was characterized by germination rate of 88%,vigor index of 79%, synchronous growth of 86% and germinating speed of 28.44% / etmal. The seed qualityof Pusian Village is characterized by germination rate of 99%, vigor index of 83%, synchronous growth of98% and germinating speed of 31.53% / etmal and Village of Insil which has 100% germination, vigor indexof 83%, synchronous growth of 99% and speed of germination of 31.86 % / etmal.Keywords: Seed Quality, Pulut Corn
Co-Authors Adeleyda M. W. Lumingkewas Albert T.H. Samosir Albert T.H. Samosir, Albert T.H. Alfonsus Yudhanto Sara Anni E. Tarore Ayu Ningsih Paputungan Christian T. Rompas Daisy S. Kandowangko Deanne A. Kojoh Doortje M.F. Sumampow Eucharisty S. Rewur J.V Bobby Polii Jantje Pelealu Jeanne M. Paulus Juandi Tengah Kelvin Dolot Marjam M. Toding Meity G.M. Polii Paula Ch. Supit Pemmy Tumewu Ridson Bawotong Rinny Mamarimbing Risky Sekoh Ristiana Mokoginta