Sustainable Nutrient Management in Sugarcane Fields

The state of sugar in Indonesia which is decreasing in terms of production, the imbalance between production and consumption, can occur due to two things, both on-farm and off-farm. Planting in monoculture for a long period of time will cause reduced soil fertility conditions so that sugarcane productivity decreases. Sustainable nutrient management in sugarcane plantations is an effort made to obtain optimal and profitable productivity, while still trying not to damage the environment so that it can be sustainable and its productivity can be maintained in the long term. Several concepts for sustainability have been put forward by many experts, including the use of site-specific fertilizers, maintaining soil fertility by using sugar processing by-products and the use of humic. It is hoped that some of these application methods can maintain sugarcane plantations to be sustainable.

Watermelon Production in Dry Land with Liquid Biofertilizer and Different Compound NPK

An area of 12.90 million ha of dry land has not been used optimally for agriculture, opportunity available to plant watermelons with proper cultivation techniques, including the use of biological and inorganic fertilizers. Biofertilizers can help provide NPK nutrients for watermelon plants. The purpose of this study was to determine the appropriate dosage of biological fertilizers and compound NPK for increasing watermelon yields. The research was conducted at AKN Sakojo No.21 Kel. Kedondong Raya Kec. Banyuasin III Pangkalan Banyuasin City Hall, South Sumatra from July to October 2020. This study used a factorial randomized block design (RAK). Factorial 1 is the dose of liquid biological fertilizer, namely: 10 mL/L, 20 mL/L, and 30 mL/L. Factorial II is Compound NPK, namely: 600 kg/ha, 900 kg/ha, and 1200 kg/ha. The highest production of 22.32 kg/plot (38 tons/ha) was achieved at a dose of 30 mL/L of liquid biological fertilizer and 1200 kg/ha of compound NPK fertilizer.

Study of Fish Community in Ulak Lia Lake Sekayu, Musi Banyuasin Regency

This study aims to determine fish's diversity, abundance, and dominance in Ulak Lia Lake, Sekayu District. This research was conducted at Lake Ulak Lia, Sekayu District, Musi Banyuasin Regency, from February to March 2021. The fish sampling method was performed by direct catching at three predetermined observation stations using nets. Netting was carried out for 12 hours, taking catches with traps that have been installed in the morning from 7 a.m. to 9 a.m., depending on conditions or weather. Sampling was marked using a bamboo buffer and the help of the Global Positioning System (GPS). The results showed that the Diversity Index ranged from 1.85 to 1.91 indicating low diversity. The fish abundance index ranged from 30.16 to 36.87 indicating low fish abundance. Where the Dominance Index 0.71-0.72 shows a moderate dominance index. Meanwhile, the dominant fish in Ulak Lia Lake is the Sapil fish (Helostoma temminckii).

Analysis of Water Chemistry Physics for Fish Cultivation Activities in The Tributary Komering River, Banyuasin District

Residents use the Komering tributary that flows through Pangkalan Gelebak Village in Banyuasin Regency for fish farming activities. Villagers tried to cultivate catfish and tilapia, but it did not work because they died. Water as a medium for fish farming activities is an important factor that must be considered. Water quality in waters can affect aquaculture activities and fish growth. The study was conducted to determine the water quality (physics and chemistry) in the Komering River tributary as a basis for the cultivation environment. The research was conducted in the Komering tributary of Pangkalan Gelebak Village, Banyuasin Regency, in September, October, and November 2019. The sampling point is determined using a purposive sampling method in four sampling points. The temperature measurements range from 27-32.7ºC, depth 0.4-9 m, brightness 0.2-1.1 m, and turbidity 12.62-69.2 NTU. Only the depth of the four physical parameters is unsuitable for cultivation activities. During the dry season, the water depth between the riverbed and cage nets does not reach 1m. Chemical parameter measurement results; dissolved oxygen 1.7 – 7 mg/l, pH 6.5 – 7, alkalinity 34 - 46 mg/l CaCO3, nitrate 0.892 - 2.278 mg/l, nitrite 0.032 - 0.217 mg/l, ammonia 0.02-0.398 mg/ l and ortho-phosphate 0.054-0.283 mg/l. The value of nitrate, ammonia, and orthophosphate indicated high values so than unsuitable for fish farming activities. Agricultural activities around creeks and domestic waste disposal are causes of poor water quality.

Effect of Dose and Compound Fertilizer on Growth and Results of Red Chili

Effect of Dose and compound Fertilizer on the Growth and Yield of Hot Pepper plant (Capsicum annum, L.). This study aims to determine the effect of Formula Application and dosage of complete compound fertilizer on the growth and yield of chili plants. This study used a factorial Randomized Block Design (RAK) with nine treatment combinations and three replications, each treatment consisting of 3 plants. The combination of these treatments used two Complete Compound Fertilizer Formulas (P). Formula 1 (P1) Complete Compound Fertilizer Pril (PMLP), 2 (P2) : Complete Compound Fertilizer Tablets (PMLT), and 3 (P3) as a control mixture of single fertilizer Urea, SP 36, and KCL ( 1:1:1). The second formula is fertilizer dosage (D) which consists of three levels, namely D1 (30 g fertilizer/plant), D2 (40 g fertilizer/plant), and D3 (50 fertilizer/plant). The variables observed in this study were plant height, number of fruit per plant, fruit weight per plant, dry weight of plant stover. Based on the results of the research that has been carried out, it is concluded that the treatment of Complete Compound Fertilizer Formula (P) has a very significant effect on all observed variables, namely: plant height, number of fruits per plant, the weight of dry root, and weight of fruit per plant. While the Fertilizer Dosage (D): 30, 40, and 50 g did not show a significant difference in the results for all observed variables, and the interaction between the two did not show significant differences in all observed variables.

Growth Parameters of Sentani Gudgeon Fish (Oxyeleotris heterodon) in Sentani Lake, Papua

ABSTRACTThe Sentani Gudgeon Fish (Oxyeleotris heterodon, Weber 1907) from the family Butidae with the general name Sentani Gudgeon is known locally as Gabus Malas and Himen. Sentani Snakehead Fish is one source of animal protein that is very important for the community around Lake Sentani. The population of the Sentani Gudgeon Fish species is at a crucial level. The issue could be affected by environmental pressures, continuous catches, competition with introduced species from outside Papua, intensive predation systems, and imbalances in ecological systems. The condition made a decline in population size until it became extinct. Gudgeon Sentani fish is the main target of catching in the lake. This condition significantly affects stock, size when first captured, population decline, reproductive cycle, and average catch. Until now, data and information on the growth of snakehead fish as the basis for fisheries management in the waters of Lake Sentani are not widely known. Considering the importance of preserving the native species of Lake Sentani, especially the Snakehead Fish, efforts to manage the fisheries in Lake Sentani's waters are urgent. This research was conducted in March - October 2020, located at Lake Sentani. The specimens were obtained from the catch of fishers with various gill nets and chopsticks. Enumerators or field assistants assisted the recording of the number and measurement of the total length of fish caught by fishermen daily. The results of the analysis showed: asymptotic size (L?) 46.20 cm, growth coefficient (K) 0.29, the total mortality rate (Z) 0.80 per year, natural mortality (M) 0.74 per year, the mortality rate due to fishing (F) 0.06 per year and exploitation rate (E) 0.075 per year.

Trend Analysis of Broiler Chicken Egg Prices in Bengkulu City

Chicken eggs are one of the most common eggs produced by breeders in Bengkulu. The price of purebred chicken eggs is very affordable compared to other types of eggs. The demand for purebred eggs will continue to grow along with the increase in population. This research aims to determine the pattern of price development of broiler chicken eggs in Bengkulu City and the trend of broiler egg prices in Bengkulu City. This research uses Trend Analysis with a simple linear regression method. An estimate made or forecast in the future with statistical analysis methods. It requires a wide variety of data (information) that is quite a lot and visible in a significant enough time to make a measuring instrument so that every component that affects the development to how much change occurs can be seen using this research. The information used was obtained from the Central Bureau of Statistics of Bengkulu City. The result obtained is a positive trend where the line of price development depicted increases continuously. The trend that continues to increase is influenced by several things that occur within a year, including Eid al-Adha, Christmas, and the new year. The linear trend line is Y = 1942,9 + 3,96 X + E where R^2 = 0,5661

Biological Aspects of Keperas Fish (Cyclocheilichthys apogon) in Batutegi reservoir, Tanggamus Regency, Lampung Province

The research aims to analyze several biological aspects of the squeezed fish in Batutegi Lampung Reservoir. The study used an experimental method of capture used net capture tool with mesh-size 1.5-2.5 inches. Sample fish measured their total length, weighed in weight, and examined their stomachs to determine what type of food they had. We researched in February, August, and November 2017. The example of keperas fish caught amounted to 415 individuals. Analysis of long-weight relationships showed that February and August were allometrically negative, while November allometric was positive. The condition factor is worth one at each station and month. The eating habits of squeezed fish are plants 50%, fish 15%, insects 10%, worms 9%, phytoplankton 8%, and zooplankton 8%. The growth pattern of fish squeeze in November is isometric and allometric positive due to the development of gonads. The food habits of fish keperas are omnivorous, with the composition according to food availability in the environment.

Effect of Planting Media Composition and Number of Segments on Patchouli Cuttings Growth

This study aims to analyze planting media composition and the number of segments of the setek on the growth of patchouli. This study used the Group Randomized Design (RAK) method factorially with nine treatments and three replays. One treatment with 5 sample plants. Treatment consists of a) Composition of plant media (M) namely M0 (topsoil); M1 (topsoil+manure with a ratio of 1:1); M2 (topsoil+ fertilizer drum with a ratio of 1:1), b) Factor number of segments setek (P), namely P1 (3 segments); P2 (4 Segments); and P3 (5 Segments). The results showed the overall percentage of living seedlings is 100%. The treatment of soil planting media mixed with chicken manure (M2) gives good results only to the growth of patchouli roots. The treatment of five segments of setek (P3) has a good influence on the length of the patchouli root. The interaction between soil media mixed with chicken manure fertilizer (M2) with five segments of setek (P3) gives the best influence on the growth of patchouli root length.

Technical, Financial and Social Cultural of Feasibility Analysis of Combine Harvester in Rice Agribusiness in Tulang Bawang District, Lampung Province

The objectives of this research were (1) to study the technical aspect of the combined harvester, (2) to calculate the feasibility of rice agribusiness using a combined harvester, (3) to measure adoption level of farmers towards combine harvester in Tulang Bawang District, Lampung Province. The research was carried out in two subdistricts, namely Rawajitu Selatan (represented by Gedung Karya Jitu village) and Rawapitu (represented by Bumi Sari village) of Tulang Bawang district from August 2015 to December 2015, and used survey method. The studied sample of 60 farmers (or 14.90% of 972) was determined with proportional random sampling. Two sorts of data were collected, namely interview and direct observation on-site, and feasibility analysis on a combined harvester, including technical, financial, and socio-cultural aspects. The result revealed that from technical aspects, combine harvester needed 5 to 7 hours to harvest, produced an excellent quality of unhauled rice with affordable production cost, compared with the traditional method. The use of a combined harvester was financially feasible. This was shown by farmer income and B/C ratio, from socio-cultural aspects, farmers showed high scores of adaption level towards combine harvester, namely 16.29 and 13.06 for Gedung Karya Jitu and Bumi Sari village, respectively.