Kajian Kemunduran Mutu Ikan Jelawat (Leptobarbus Hoevenii) Segar dengan Perendaman dalam Larutan Kitosan

This research was intended to evaluate the deterioration of fresh mad barb (Leptobarbus hoevenii) with soaking in chitosan solution. The method used in this study was the experimental method, with concentration of chitosan solution was 0%; 0.1%; 0.3% and 0.5%. The fresh mad barb (Leptobarbus hoevenii) was evaluated for organoleptic tested; including eye visually, gills, mucous, meat (color and visually), odor and texture; total plate count and total volatile base.The highest concentration of chitosan solution could increased the fish quality of fresh mad barb (Leptobarbus hoevenii). The concentration with 0,5% of chitosan solution was the best treatment; could defend the fish quality on eye parameter for 15 h with value 7.08; gills 12 h (6.72), mucous 15 h (7.00); meat 15 h (7.11); odor 21 h (7.04); texture 15 h (7.12); total plate count 12 h (4.04x105 colony/gram) and total volatile base 21 h (33.07 mg/100 gram)

Study on the Hibernation of Tilapia Fish (Oreochromis Niloticus)by Usingthe Extract of Ruku-rukuLeaves(Ocimum Sanctum L.)during Dry System Transportation

(Ocimum sanctum L)extract solution used for hibernating tilapia during drysystem transportation. The research was using an experimental method anddesignedrandomized complete design (RCD). The treatment was hibernating thefish by using four kinds and levelsof the concentrationruku-ruku leaves extract,namely: using cold temperatures 10oC (L0), the solution of ruku-ruku leavesextract at the concentration of 10% (L1), 15% (L2), 20% (L3). Parametersobservedwere the quality of the water used during hibernation (temperature, pH, turbidity,CO2 content), the activity of tilapia during hibernation, the changing conditionsoftilapia during transportation, the temperature fluctuations in the packaging box, aswell as the percentage of survival rate of tilapia after awakening. The resultsshowed that the best treatment was the using of ruku-ruku leaves extract at theconcentration of 20% to hibernate the tilapia fish in 15-20 minutes. The mortalityrate of life of tilapia was up to75% during 6 hours transportation

Weight loss and microstructural studies of stressed mild steel in apple juice

This study investigated the effect of internal stress of mild steel on its corrosion behaviour in apple juice by weight loss and microstructural analyses....read full pape

The Effect of Giving Multiple Doses of Npk Fertilizer Tablet to Growth and Prodictin of Pineaplle (Ananas Comosus (L) Merr) in Peatland

This study aimed to determine the effect of NPK fertilizer tablets Sigi and get the best dosage of pineapple crop production. Research has been conducted in the community garden Desa kualu Nenas Kampar District Riau Province began in February 2014 to June 2014. The study was carried out experiments using arandomized block design (RBD) consists of 4 treatments and 6 replications, each experimental unit consisted of 6 plant. The treatment given is without fertilizer NPK (P0), NPK fertilizer Sigi 1 tablet ( 11.869 g)(P1), NPK fertilizerSigi 2 tablets (23.738 g)(P2), NPK Sigi 3 tablets (35,607 g) (P3). Parametersmeasured were age at flowering, harvesting, fruit length, fruit circle, fruit weight, plot production. The results showed that NPK fertilizer tablets Sigi different effect on the production of pineapple plants. NPK fertilizer as much as 3 Tablets Tablets Sigi equivalent to a dose of 35.607 g / plant. The best effect on flowering plant age, time of harvest, fruit length, fruit circle, fruit weight, yield per plot on pineapple plant varieties queen

The Effect of Giving Multiple Doses of Npk Fertilizer Tablet to Growth and Prodictin of Pineaplle (Ananas Comosus (L) Merr) in Peatland

This study aimed to determine the effect of NPK fertilizer tablets Sigi and get the best dosage of pineapple crop production. Research has been conducted in the community garden Desa kualu Nenas Kampar District Riau Province began in February 2014 to June 2014. The study was carried out experiments using arandomized block design (RBD) consists of 4 treatments and 6 replications, each experimental unit consisted of 6 plant. The treatment given is without fertilizer NPK (P0), NPK fertilizer Sigi 1 tablet ( 11.869 g)(P1), NPK fertilizerSigi 2 tablets (23.738 g)(P2), NPK Sigi 3 tablets (35,607 g) (P3). Parametersmeasured were age at flowering, harvesting, fruit length, fruit circle, fruit weight, plot production. The results showed that NPK fertilizer tablets Sigi different effect on the production of pineapple plants. NPK fertilizer as much as 3 Tablets Tablets Sigi equivalent to a dose of 35.607 g / plant. The best effect on flowering plant age, time of harvest, fruit length, fruit circle, fruit weight, yield per plot on pineapple plant varieties queen

Germination Seed Response of Eleusine Indica L. Gaertn to Depth and Buried TIME

A population of Eleusine indica L. Gaertn multiple resistant biotype securred in an oil palm field in North Sumatra. Field experiment was carried out to determinate the effect of time of period and depth seed buried in the soil on germination, effect of seed position buried in the soil on their emergence and number of seed bank found in various depth of soil. The study was conducted at Agricultural Faculty, University of Sumatera Utara. This research used randomized block design with 3 unit and 4 replication, first unit was germination response of seed weed E. indica to dept buried time with 2 factors. The first factor was dept with 5 treatment i.e. 0, 5, 10, 15, and 20 cm. The second was buried time with 6 treatments i.e. 2, 4, 6, 8, 10, and 12 weeks. Second unit was germination seed response of E. indica to various depth with 5 treatment i.e. 0, 5, 10, 15, and 20 cm. Third unit was seed bank E. indica with 4 treatment i.e. 0-5, 5-10, 10-15 and 15-20 cm. The results showed that the buried depth does not treatment affect the germination, but on buried time treatment affects on the germination. Seed germination buried for 12 weeks, number of seeds germination is higher than along 2, 4, 6, 8, 10 weeks. The depth of buried seeds (planting) effect on number of sprouts that appear on the surface of the soil. The highest number appears there are at 0 cm below the soil surface followed by 5 cm. The highest number of seed bank in the field are at a depth of 0-5 cm soil followed by a 10-15, 5-10, 15-20 cm