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Balonggu Siagian

Universitas Sumatera Utara

Author-ID : 3055630

Agriculture, Biological Sciences & Forestry

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RESPONS PERTUMBUHAN DAN PRODUKSI SEMANGKA (Citrullus vulgaris Schard.) TERHADAP KONSENTRASI PACLOBUTRAZOL DAN DOSIS PUPUK NPK Jasmine M. Q. F. C. P; Jasmani Ginting; Balonggu Siagian
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

The aim of this experiment was to determine respons in growth and yield of watermelon topaclobutrazol and dosage of NPK fertilizer. This research had been conducted at field of Pasar Istreet no. 89, Tanjung Sari, Medan (± 25 in above sea level), in April-July 2013 using factorialrandomized block design with two factor, i.e. concentration of paclobutrazol (0, 150, 300, and 450ppm) and dosage of NPK fertilizer (60, 120 and 180 g/plant) in six times. Parameter observed wereplant height, number of female flowers, number of male flowers, total weight persample and totalweight perplant. The result showed that paclobutrazol concentration affect significantly on plantlength (6-8 weeks after planting), number of female flowers (35 and 38 days after planting), numberof male flowers (41 and 44 days after planting), total weight persample, and total weight perplant.Dosage of NPK fertilizer affect significantly on number of male flowers (44 days after planting).Interaction affect significantly on number of female flowers (35 and 38 days after planting) andnumber of male flowers (41 days after planting).Keywords: watermelon, paclobutrazol concentration, and dosage of NPK fertilizer

RESPONS PERTUMBUHAN BIBIT KAKAO (Theobroma cacao L.) TERHADAP PEMBERIAN ABU BOILER DAN PUPUK UREA PADA MEDIA PEMBIBITAN Uli Kris Putri Sitorus; Balonggu Siagian; Nini Rahmawati
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

Growing media fertility can be improved or enhanced with inorganic or organic fertilizer, such asboiler ash, which is one type of solid waste by-product of palm oil mills as well as the source ofnitrogen urea fertilizer, is expected to boost growth of cocoa seedling in the nursery. This researchhad been conducted at experimental field of Fakultas Pertanian USU in May 2013 until September2013, using factorial randomized block design with two factor. The first factor was dose of boiler ash(0, 100, 10 g/polybag) and the second factor was dose of urea fertilizer (0, 5, and 10 g/polybag).Parameter observed were plant height, total of leaf area, dry shoot weight and dry root weight.Theresult showed response of boiler ash on cocoa seed significantly increase total of leaf area and dryshoot weight. Urea fertilizer significantly affect dry shoot weight. Interaction of both significantlyaffect dry shoot weight. The best results from interaction boiler ash and urea fertilizer were obtainedin the treatment of boiler ash at 300 g/polybag and urea fertilizer 5 g/polybag.________________________________________________________________________________Keywords: Boiler Ash, Urea Fertilizer, Cocoa Seed

Respon Pertumbuhan Bibit Kakao (Theobroma cacao L.) terhadapPemberian Pupuk Guano dan KCl Pispa Rajagukguk; Balonggu Siagian; Ratna Rosanty Lahay
Jurnal Agroekoteknologi Vol 3, No 1 (2015)
Publisher : Universitas Sumatera Utara

Addition of guano in cultivation of cacao seedling is the one step to use organic fertilizer thatcomes from animal feces and it is used to add soil nutrient for the growth of cocoa seedlings, aswell addition of KCl is used to add soil nutrient too. For that purpose addition guano and KCl aimsto increase growth of cacao in cultivation of seedling. This research had been conducted atexperimental field of agriculture fakulty University of North Sumatera in October 2013 - January2014 using factorial randomized block design with two factor, i.e. addition dose of guano (0, 75 ,150, 225 g/polibag) and dose of KCl (0, 2, 4 g/polibag). Parameter observed were cacao height,cacao stem diameter, cacao leaf number, total leaf area of cacao, shoot fresh weight of cacao, shootdry weight of cacao, root fresh weight of cacao, root dry weight of cacao ,and cacao shoot rootratio. The result showed that parameter cacao height, cacao stem diameter, total leaf area of cacao,shoot fresh weight of cacao, shoot dry weight of cacao, and cacao shoot root ratio weresignificantly to addition guano but total leaf areaof cacao, root fresh weight of cacao, root dryweight of cacao,and cacao shoot root ratio were not significantly to addition guano.The best resultin addition guano is 225 g/polibag that produce shoot dry weight of cacaoas 11.57 g. All parameterswere not significantly to addition KCl and the interaction of two factor. The best resultofcombination is 225 g/polibag of guano and 4 g/polibag of KCl, that produce root dry weight ofcacao as 1.76 g.Keywords :guano, KCl, cacao seedlings.

Co-Authors Agustua Sinabariba B. Sengli J. Damanik Fadli Heriadi Nasution Ferry Ezra Sitepu Indah permata Sari Siagian Irsal Irsal Jasmani Ginting Jasmine M. Q. F. C. P Jonatan Ginting Jonathan Ginting Lahay, Ratna Rosanty Lisa Lisa Mawarni Makarios Butar Butar Marisi Untung Hutahaean Meiriani Meiriani Nini Rahmawati Onny Suriyono Silaen Onny Suriyono Silaen Onny Suriyono Silaen Pispa Rajagukguk Puji Setiawan Puji Setiawan Romayarni Saragih Sanggam Silitonga Sanggam Silitonga Sanggam Silitonga Sarah Vitrya Sidabutar Uli Kris Putri Sitorus Welly Jenny Hutagalung

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