Respons Pertumbuhan Dan Produksi Tanaman Kacang Tanah (Arachis Hypogaea L.) Terhadap Pemberian Paclobutrazol Dan Pupuk Kalium

The purpose of the study was to determine the effect of paclobutrazol and potassium fertilizer onthe growth and yield of peanuts. The research was conducted at Pasar I Tanjung Sari street, Medanwith the height of 25 metres above sea level, began from May until October 2013. The research wasarranged with a randomized block design with two factors. The first factor was concentration ofpaclobutrazol ( 0 ; 75 ppm ; 150 ppm and 225 ppm ) and the second was dose of KCl ( 0; 0.15 g ;0.3 g and 0.45 g ) . The parameters observed were plant height, number of ginofor, number ofproductive branches, number of unproductive branches, days to flowering, harvesting, pod weightper sample, number of filled pods per sample, number of empty pods per sample, weight of grainper sample, weight of grain per plot and weight of 100 grains. The results showed that plant height,number of ginofor, number of productive branches, days to flowering, pod weight per sample,number of filled pods per sample, weight of grain per sample, weight of grain per plot, and weightof 100 grains were significantly affected by paclobutrazol concentration. However all parametersobserved were unsignificantly affected by dose of KCl. There was also no interaction betweenpaclobutrazol concentration and dose of KCl

The Growth and Yield of Sweet Sorghum (Sorghum Bicolor (L.) Moench) on the Mulch Treatments and Organic Matter

The research has been conducted to evaluation growth and yield of sweet sorghum on the mulch treatments and organic matter. The research was conducted at experimental field, Agricultural Faculty University of Sumatera Utara, Medan with altitude ± 25 meter above sea level, began from April up to August 2015. The experiment was arranged by split plot design with mulch as main plot (without mulch, hay mulch) and organic matter as sub plot i.e., without organic matter, empty fruit bunch compost,chicken manure and mixture of empty fruit bunch compost and chicken manure. Parameters observed were plant lenght, leaves number, stem diameter, flowering time, seed weight per sample, seed weight per plot and weight of 1000 seeds. The results showed that, among all parameters observed, only leaves number was significantly affected by mulch treatment. However there were variations of plant lenght, leaves number, and stem diameter on organic matter treatments. B3 treatments (mixture of empty fruit bunch compost and chicken manure) produced the highest plant length (296.88 cm), the highest leaves number (5.83 strands) and the largest stem diameter (5.38 mm).There was no interaction between mulch treatments and organic matter

Tanggap Pertumbuhan Dan Produksi Bawang Merah (Allium Ascalonicum L.) Terhadap Dosis Pupuk Fosfat Dan Asam Humat

The aims of the research was to analize the growth and yield response of shallots (Allium ascalonicum L.) on the doses of phospate fertilizer and humic acid. The research was conducted at Jl. Pasar 1 Ringroad Medan from August to November 2014, using a factorial randomized block design with two factors replicated three times. The first factor is the doses of phosphate fertilizers (90, 72, 54, 36 kg / ha) and the second is the doses of humic acid (0, 1.5, 3 kg / ha). Parameters observed were number of leaves, number of tillers, wet weight per sample, dry weight per sample, the rate of net assimilation, the rate of relative growth, and the rate of plant growth. The result showed that only number of leaves 4 week after planting was significantly affected by the interaction between fosfate fertilizers and humic acid, which the most number of leaves was 19.67 produced by combination of 36 kg/ha phosphate fertilizer and 3 kg/ha humat acid and at 5,6 and 7 week after planting was significantly affected by humic acid. Meanwhile, all other parameters observed were not significantly affected by all treatments

Produksi Biji Bawang Merah Samosir Aksesi Simanindo Terhadap Konsentrasi GA3 Dan Lama Perendaman Di Dataran Tinggi Samosir

The aim of the research was to identify the effect of GA3 concentration and soaking period on the seed yield of shallot. Research was conducted at Hatoguan Village, Palipi Subdistrict, Samosir from February up to July 2014, carried out by using randomizes block design with two factors, replicated three times. The first factor was GA3 concentrations (50 ppm; 100 ppm; 150 ppm; 200 ppm; and 250 ppm) and the second was soaking period (30; 60; and 90 minutes). Parameters observed were the number of plant producing flowers per plot, the number of umbel per plot, seed weight per umbel, and seed weight per plot. The results showed that among all parameters observed, only the number of plants producing flowers per plot and seed weight per umbel were affected by GA3 concentration. The highest number of plants producing flowers and seed weight per umbel were produced by G4 (200 ppm GA3) i.e 10,780 plants (43,12 %) and 0,202 g respectively. Meanwhile, only seed weight per umbel was significantly affected by soaking period. The correlation between soaking period and seed weight per unbel showed positive linear regression