Uji Kesangkilan Beberapa Bentuk Pupuk Hayati Jamur Mikoriza Va Pada Padi Gogo (Effectivy Test of VA Mycorrhiza Fungi’s Bioferthlizer Formulation on Upland Rice)

The study wasundertaken to determined the potency of biofertilizer formulation of VA mychorrhizal fungi and it’s effect on the intensity of root infection, number of spores, and growth and production of upland rice. The experiment was conducted in the glasshouse and arranged in complete randomized design with 5 replications. The biofertilizer formulation as the treatments were: spore suspension, root and soil mixture containing spores, spores as granular and tablet formulations, and control (non inoculated). Results of the experiment indicated that biofertilizer significantly improved the growth of plant and crop production. There was no different influences among biofertilizer formulations on the intensity of mycorrhizal infection, number of spores/gram of soil, growth of plant and crop production

Sistem Bus Rapid Transit Transjakarta Dalam Studi Rekayasa Sosial

Jakarta has developed an integrated transport system and planned, called Macro Transportation System planto address transportation problems in Jakarta. Transjakarta, a Bus Rapid Transit system (BRT), is one of thepublic transportation facilities included in the Macro Transportation System plan, which was intended as aneffort to developa new urban transportation culture. This study used the concept of socio engineering toassess the Transjakarta transport service in Jakarta. The results indicate that the highest service quality relatedto the dimension of empathy and lower service quality associated with the tangible dimension

Pengaruh mikoriza vesikular arbuskular terhadap pertumbuhan tanaman jagung di tanah podsolik merah kuning=Effect of Vesicular-Arbuscular Mycorrhiza on Growth of Corn on Podzolic Soil

ABSTRACT A greenhouse pot experiment was conducted to test the effect of vesicular-arbuscular mycorrhizal (VAM) fungi on growth of corn on a Rangkasbitung Red Yellow Podzolic (RY?) soil. Soil samples were sterilized with formalin 5% and treated with lime (0 and 1,5 Ion CaC04/11a) and P fertilizer (0 and 250 kg TSP/ha). Corn plants inoculated with 2 types of VAM fungi, e.i. the indigenous VAM fungi isolates (Glomus spp.) and the introduced VAM fungus isolate (G. fasciculatum (Thaxter sensu Gerd.) Gerd. & Trappe). Plants were harvested at 42 days after planting. The inoculated VAM fungi significantly increased root fresh weight, shoot dry weight and P uptake of corn on a TYP soil. In case, G. fasciculatum was more effective compared to indigenous Glomus. However, the effectiveness of VAM fungsi was affected by the availability of P in soil_ At 15,90 ppm of available P in soil, namely in an treated soil with 250 kg TSP/ha, the VAM fungi was at the most effective in increasing growth and P uptake of corn. On the other hand, in an untreated soil or in an treated soil with lime alone, the VAM fungi not significantly increased corn growth. The effectiveness of VAM fungi on corn tended to decrease when the available P in soil was higher than 15,90 ppm, Key words : glomus fasciculatum podzolic soil- VA rnycorrhizae