PENGARUH RESIDU PEMBERIAN VINASSE DAN PUPUK KALIUM TERHADAP PERTUMBUHAN DAN HASIL KANGKUNG DARAT (Ipomoea reptans Poir.)

This r esearch aims to determine the impact residual effect of vinasse and potassium fertilizers on growth and yield of land kale. This experiment using land previously contained residual vinasse treatment incubation and residual potassium fertilizer and then planted of land kale. The experiment was conducted at the experimental farm Tridharma Cultivation Department, Faculty of Agriculture, Gadjah Mada University, in February-March 2013 using land kale varietie Bangkok LP-1. Research design in a completely randomized design (CRD) by using two factors, the first factor was the residual of vinasse incubation consisted four levels, namely residual effect of vinasse incubation 5, 10, 15 and 20 days. The second factor was the potassium fertilizer application that consisted of three levels: without potassium fertilizer, half the recommended dose of potassium fertilizer, and potassium fertilizer as recommended, so that the total of treatment as much as 12 units and each was repeated three replications. Data were analyzed by using analysis of variance (ANOVA) with a significant level of 95 %. There is a significant difference followed by DMRT (Duncan's Multiple Range Test) with a significant level of 95%. The results best combination treatment is residual vinasse incubation 10 days with 100 kg/ha of potassium fertilizer (V2K1) can increase plant height, stem diameter, and fresh weight of the canopy. Harvest index did not significant treatments. Vinasse which is a liquid organic waste with rainfall conditions are quite high (ranging from 160-399 mm/month) during the study the possibility of nutrients released vinasse and potassium has been leached by rain water

PERTUMBUHAN BIBIT KAKAO (Theobroma cacao L.) PADA MEDIA TANAM YANG DIBERI VINASE DAN PUPUK KALIUM

The research aimed to study the effect of vinasse incubation and potassium fertilizer for the growth of cocoa seedling. The research had been carried out in Tridharma research station, Faculty of Agriculture Gadjah Mada University, Banguntapan, Bantul, Yogyakarta since June to September 2013. The experiment used RCC 70 clone cocoa seedling age three months. The research was designed by Completely Randomized Design (CRD) factorial. The first factor was the incubation vinasse consisted of three levels i.e incubation vinasse 15, 20 and 25 days. The second factor was potassium fertilizer with two levels i.e without potassium fertilizer and with potassium fertilizer as recommended (250 kg/ha) with three replications. The results showed that cocoa seedling that no potassium fertilizer the same as with potassium fertilizer on growth of cacao seedling. The best combination between 15 days vinasse incubation with no potassium fertilizer on cacao seedling growth (increase leaf area, root fresh weight, root dry weight and shoot dry weigth)

HUBUNGAN SIFAT FISIOLOGIS TANAMAN KEDELAI (Glycine max (L.) Merr.) DAN KETERGANTUNGANNYA TERHADAP MIKORIZA

The research had been conducted at Kebun Percobaan Fakultas Pertanian, Universitas Gadjah Mada, Banguntapan, Bantul, Yogyakarta since January to May 2013 to know the degree of dependence of eighteen soybean cultivars (Glycine max (L.) Merr.) that inoculated of mycorrhizal arbuscula fungi and found the relation of eighteen soybean cultivars (Glycine max (L.) Merr.) physiological characteristic. The experimental design applied the Completely Randomized Design (CRD) in factorial 18x2 with three replication. The first factor was soybean cultivars consisted of 18 levels, there were Grobogan, Burangrang, Sibayak, Kaba, Tanggamus, Anjasmoro, Argomulyo, Wilis, Panderman, Ijen, Baluran, Galunggung, Petek, Garut, Gepak Kuning, Malabar, Seulawah, and Sinabung. The second factor was inoculation mycorrhiza, consisted of 2 levels, there were without inoculation mycorrhiza and with inoculation mycorrhiza. The collected data then were analyzed by means of analysis of variance (Anova) applying level of significanced α = 5%. The result shows there are three categories the degree of mycorrhizal dependency which are highly dependent (Kaba, Wilis, and Baluran cultivar), moderately dependent (Grobogan, Anjasmoro, Argomulyo, Petek, Garut, Malabar and Seulawah cultivar) and marginally dependent (Burangrang, Sibayak, Tanggamus, Panderman, Ijen, Galunggung, Gepak Kuning and Sinabung cultivar). The chlorophyll content of leaf, the number of stomata and also transpiration rate unrelated with mycorrhizal dependency value whereas photosynthetic rate increases mycorrhizal dependency value

PENGARUH MASA INKUBASI VINASE DAN TAKARAN PUPUK KALIUM TERHADAP PERTUMBUHAN DAN HASIL CABAI MERAH (Capsicum annuum L.)

Vinasse is liquid waste from ethanol production. Amount of Vinasse is increased as much as ethanol product. This research aims to observe the effect of vinasse incubation and potassium fertilizer on growth and yield of red chili (Capsicum annuum L.) Branang variety. This research had been conducted in the TriDharma farmstation, Faculty of Agriculture, Gadjah Mada University, Banguntapan, Bantul, Yogyakarta from October 2012 to February 2013. This research was arranged in Randomized Completely Block Design (RCBD) with two factors. The first factor was vinasse incubation which five levels were: no incubation, 5 days incubation of vinasse, 10 days, 15 days and 20 days. The second factor was potassium fertilizer rate which were three level without potassium fertilizer, 125 kg/ha of potassium fertilizer and 250 kg/ha potassium fertilizer. The experiment was 15 units with 3 replications. Data were analyzed by using variance analysis (ANOVA) with 95% significant level. If there were significant differences followed by DMRT (Duncan Multiple Range test) with a confidence level of 95%. Relation between 2 factors was analyzed by correlation analysis. The results of this experimental showed that incubation of vinasse till 20th days did not increases of pH, amount of nitrogen, phosphor, potassium and organic matter of vinasse. Vinasse which had been incubated increased leaf area, and plant dry weight, but it didn�t to yield crops. Either potassium fertilizer dosage 125 kg/ha and 250kg/ha or without potassium fertilizer did not give significantly effect on plant growth and yield of red chili