Jurnal Ilmu Pertanian Indonesia

1-5

Authors: Triwardhani Cahyaningsih, Fachriyan Hasmi Pasaribu, Agustin Indrawati

This experiment aims to produce immunoglobulin Y (IgY) Staphylococcus aureus isolates origin staphylococcosis case in rabbits. Vaccination is done several times using Staphylococcus aureus active in 109 cfu/ml. Injecting the chicken is done four weeks in a row, the first week is done by intravenous injection of S. aureus antigens, the second week of the injection sub cutan S. aureus emulsified with Freund's complete adjuvant, followed by the third and fourth week of the injection of S. aureus antigen emulsified with incomplete Freund's adjuvant. Egg samples were taken after four weeks of the last injection for identification, purification, and determination of specific IgY against S. aureus in egg yolk. IgY specificity qualitatively tests performed by the AGP test (To Gel Precipitation). IgY extraction is done using PEG - Ammonium sulfate, purified IgY concentration calculated by the method of Bradford. The results showed that IgY began to be detected in egg yolk at week six after immunization, with the average levels of IgY is 1.7 mg/ml.

13-19

Authors: Resmayeti Purba, Yuti Giametri

The adoption of a new varieties of rice (VUB) are expected could increase the rice production. The study carried out in District of Serang, Pandeglang, Lebak, and Serang City, where each location is implemented in seven villages, so there are 28 locations. The Study of VUB was held on two cropping seasons, that is cropping season II on 2013 and cropping season I on 2014. The new varieties of rice were introduced is Inpari-13, Inpari-15, Inpari-18, and Inpari-19. Rice yields productivity Inpari-19 7.2 ton/ha, is higher than Inpari-13 (6.62 ton/ha), Inpari-15 (6.69 ton/ha), Inpari-18 (6.59 ton/ha), Ciherang (6,30 ton/ha), and Mekongga (6.4 ton/ha). Based on the technical aspects, shows that Inpari-19 adaptive and can increase the yield productivity of 900 kg/ha compared to Ciherang 800 kg/ha, and Mekongga. From the economical aspect the advantages of farming using Inpari-19 and based on the social aspect, showing that the preference of farmers to Inpari-19 like more than Inpari-13, Inpari-15, and Inpari-18. Based on the technical aspects, economic and social, the Inpari-19 can be used as an alternative choice of lowland rice varieties.

25-33

Authors: Simon Petrus Oktovianus Leatemia, Emmanuel Manangkalangi, Paskalina Theresia Lefaan, Hans Fence Zakeus Peday, Luky Sembel

Benthos macroinvertebrates have been used as bioindicators to assess the waters quality of the stream, but still are very rarely to applied in West Papua streams. Benthos macroinvertebrates can describe the stream water quality so that very well be used as bioindicators, due to each species has a different tolerance to interference organic pollutants in waters. This study aimed to assess the water quality of Nimbai stream using benthos macroinvertebrates tolerance level and several water quality parameters. Data retrieval was conducted in JuneJuly and SeptemberOctober 2012 in seven stations (L1L7) from Nimbai upstream to downstream that connected to Prafi river. The water macroinvertebrates were taken using surber with mesh size 200 μm and then was identified at the family level. At L5 station near the oil palm waste disposal installations was contains oil and fat (<1-3 mg/l), which resulted in dissolved oxygen (DO) and pH is lower than the other stations. Similarly the value of H' is low (0.83), however, the value of C (0.79) was high that dominated by Oligochaeta. Famili biotic index (FBI) value obtained showed that water quality in the L1L4 stations was in good to excellent condition, but the quality at L5 station is classified as very poor. As the distance far away from the sources of pollution in the L5 station, water quality tends to improve as shown in the L6 and L7 stations. The result of this study shows the important benefits of benthos macroinvertebrates as bioindicators for assessing the quality of stream waters, and can be described aquatic environments disturbance to the benthos macroinvertebrates habitats in Nimbai stream.

41-45

Authors: Makhziah, Sukendah, Yonny Koentjoro

Mutation is one of the ways to improve genetic variation in plant breeding so the target traits were more easily obtained. Grains of three varieties of maize (Bisma, Madura local, and Gumarang) were treated with gamma 60cobalt irradiation doses (0, 100, 200, and 300 Gy) before sowing then planted in a split plot randomized block design with three replication, to be evaluated for their morphology and agronomic traits. The Main plot was cultivars and sub plot was gamma radiation rates. There was no interaction between gamma rates and cultivars of maize, but increasing of gamma rates caused decreasing of some traits. Some traits such as plant height and leaves number were decreased significantly when gamma rate increased 100 to 300 Gy as well yield components such as grain weight and grain number per ear. Gamma 200 caused produce more ears than other rates. Bisma exhibited greater performance than Madura and Gumarang both of morphology and agronomic traits.

52-66

Authors: La Ode Alifatri, Sigid Hariyadi, Handoko Adi Susanto

The aims of this research were to analyze the land suitability and carrying capacity for groupers culture. The utilized methods were land suitability analysis and carrying capacity analysis. The results of land suitability analysis showed that the area which is fit very suitable criteria is 38.16 ha (17.13%), fit enough suitable is 118.27 ha (53.11%), and appropriate-conditional suitable is 66.26 ha (29.75%). The results of carrying capacity analysis resulted in an area of 156.43 ha which is very suitable for groupers culture development in KJT systems. This area could accommodate as much as 313 ponds which are equivalent to 626 units or 6.257 KJT boxes.