Utilization of Fad Distribution in South Buton Waters As a Fishing App by Purse Sein Fishermen in Kadatua District, Selatan Buton Regency

Fish Aggregating Devices (FAD's) have long been used by fishermen in South Buton Regency. This study aims to determine the utilization of FAD distribution as a fishing aid by purse sein vessels in the waters of Kadatua District, South Buton Regency. This study aims to determine the utilization of FAD distribution as a fishing tool by purse sein vessels in Kadatua District, South Buton Regency. Data collection methods include FAD point data taken from GPS (Global Position System) fishermen and dominant catch data from purse sein fishermen. The results of the study obtained data on the distribution of FADs in Kadatua District spread between a distance of 0-12 miles, during the study the coordinates of FADs were obtained as many as 79 coordinate points owned by fishermen in Kadatua District. FADs used by purse sein fishermen to carry out fishing operations have 24 FAD points, which are spread over a distance of 0 – 12 miles. In April the distribution of FADs used as fishing aids by purse sein vessels was at a distance of ± 0 – 12 miles, while in May and June FADs used as fishing aids were at a distance of ± 2 – 12 miles. The dominant fish catch data for purse sein fishermen is 690 kg in April, 525 kg in May and 735 kg in June. The dominant catch during the study was dominated by scad fish (Decapterus spp). The level of effectiveness of the dominant catch of purse sein fishermen is highest at a distance of 4-12 miles with a total catch of 1,070 kg of the total catch of 1,950 kg.

Evaluating Role of Plant Growth Promoting Rhizobacteria for Improving Nitrogen and Phosphorus Use Efficiency in Sunflower Helianthus Annuus L.

Intensive use of chemical fertilizers has produced environmental, health and agricultural hazards besides their high cost. Microbial (plant growth promoting rhizobacteria) inoculation as substitute to chemical fertilizers could be an effective way for sustainable sunflower production. Therefore, a field study was performed at the Agronomic Research Area, Department of Agronomy, University of Agriculture, Faisalabad, to evaluate role of plant growth promoting rhizobacteria for improving nitrogen and phosphorus use efficiency in sunflower. The study comprised of two experiments carried out during 2012 and 2013 in randomized complete block design (RCBD) with three replications. In first experiment, sunflower hybrid (Hysun-33) was subjected to eleven treatments viz. Control, Recommended N (100%), 100% N + PGPR (Azospirillum) seed inoculation, 75% N + PGPR (Azospirillum) seed inoculation, 50% N + PGPR (Azospirillum) seed inoculation, 100% N + PGPR (Azotobactor) seed inoculation, 75% N + PGPR (Azotobactor) seed inoculation, 50% N + PGPR (Azotobactor) seed inoculation, 100% N + PGPR (Azospirillum + Azotobactor) seed inoculation, 75% N + PGPR (Azospirillum + Azotobactor) seed inoculation, 50% N + PGPR (Azospirillum + Azotobactor) seed inoculation. While second experiment comprised of treatments: Control, Recommended P (100%), 100% P + PGPR (Bacillus) seed inoculation, 75% P + PGPR (Bacillus) seed inoculation, 50% P + PGPR (Bacillus) seed inoculation, 100% P + PGPR (Pseudomonas) seed inoculation, 75% P + PGPR (Pseudomonas) seed inoculation, 50% P + PGPR (Pseudomonas) seed inoculation, 100% P + PGPR (Bacillus + Pseudomonas) seed inoculation, 75% P + PGPR (Bacillus + Pseudomonas) seed inoculation, 50% P + PGPR (Bacillus + Pseudomonas) seed inoculation. The results of first experiment depicted that both inoculants and their mixture with different nitrogen rates showed an increase in growth, yield, quality and nutrients uptake parameters. The results further revealed that 100% nitrogen + PGPR (Azospirillum + Azotobactor) inoculation not only produced highest achene and oil yields but also gave maximum gross and net income and benefit cost ratio during both years (2011 and 2012) of experimentation. However, 75% nitrogen + PGPR (Azospirillum + Azotobactor) inoculation produced statistically same yield as with recommended nitrogen (100%). The results of the second experiment showed significant improvement in growth, yield, quality and nutrients uptake of sunflower crop by both inoculation and their mixture sources with various combinations of phosphorus. However, maximum achene and oil yields with highest gross, net income and benefit cost ratio were obtained with the combination of 100% phosphorus + PGPR (Bacillus + Pseudomonas) inoculation during both years. But applying the combination of 50% phosphorus + PGPR (Bacillus + Pseudomonas) inoculation achieved the achene and oil yield statistically comparable to that of recommended phosphorus (100%) without inoculation. The study suggested that 25% of nitrogen and 50% of phosphorus fertilizer doses can be reduced by applying PGPR (Azospirillum + Azotobactor) and (Bacillus + Pseudomonas) inoculation sources respectively, for achieving sunflower achene yield which was obtained by using 100% nitrogen and phosphorus fertilizers without inoculation.