Agrica: Journal of Sustainable Dryland Agriculture

ANALISIS KUALITAS FISIK TANAH PADA LAHAN SAWAH DI DESA BANGKOOR KABUPATEN SIKKA

Yovita Yasintha Bolly — 2023-05-31

Bangkoor Village is one of the rice cultivation centers in Sikka Regency. Intensive agricultural activities supported by the availability of water sources allow farmers to cultivate rice three times a year. In addition, the use of various inputs such as the use of tractors, and the application of fertilizers and pesticides continues to increase crop productivity. On the other hand, the consequences of agricultural activities will certainly have an impact on the physical quality of the soil. This study aims to determine the physical quality of paddy soil in Bangkoor Village, Sikka Regency. The research method used is a survey method and analysis in the laboratory. Soil sampling using the purposive sampling method in three hamlets, namely Hamlet Mamai, Hamlet A, and Hamlet BC. Observational variables observed were soil texture, porosity, and soil water content. Assessment of soil quality using soil physical parameters. The results showed that some of the paddy fields in Bangkoor Village had been damaged or degraded by several factors, namely (1) the weight limiting factor for soil texture classes in the soil in Mamai hamlet, A hamlet, and BC hamlet. (2)The weight limiting factor for soil porosity in the soil BC sub-village.(3) The soil water content is included in the light-moderate limiting factor in all study locations. The effort that needs to be done is the addition of organic matter to paddy fields to be able to improve these limiting factors.

Aplikasi Penginderaan Jauh dan SIG Pemetaan Pengunaan Lahan dan Sistem Informasi Lahan Pertanian (Studi Kasus di Kabupaten Nagekeo, Provinsi Nusa Tenggara Timur)

Paul Ludgerius Rusman Pita — 2023-05-28

Remote sensing technology combined with Geographic Information Systems (GIS) can provide and produce data and information quickly, precisely, and accurately, so that the latest land use can be known. This study aims to determine the level of accuracy of satellite imagery interpretation, make existing land use maps, and provide agricultural land information systems in Nagekeo Regency. The research method used is an explorative method. The stages of the research consisted of identifying satellite images, field surveys, reinterpreting land use maps, and creating agricultural land information systems. The results showed that the level of accuracy of interpretation of satellite imagery for land use in Nagekeo Regency was 97%. The widest use of paddy fields is in Aesesa Subdistrict with 5080 ha, the widest use of dry land is in Nangaroro Subdistrict with 2062 ha, the widest use of mixed garden land is in Boawae Subdistrict with 7062 ha and the widest use of garden land is in Mauponggo Subdistrict 2800 ha. Information on paddy fields contains information on land area, land status, farmer's name, farmer's address, farmer's age, cropping pattern, and yield sharing system. The total land ownership of the owner's land was 2417.77 ha with a total of 2798 plot units, 1102.7 ha of sharecroppers' land with a total of 1240 plot units, and pawning farmer's land area of 233.99 ha with a total of 331 plot units.

ANALISIS KEEFEKTIFAN KINERJA KELOMPOK TANI UBIKAYU VARIETAS LOKAL NUABOSI DI DESA RANDOTONDA KABUPATEN ENDE

Willybrordus Lanamana — 2023-05-22

The purpose of this study was to analyze the performance effectiveness of the local variety of Nuabosi cassava farmer groups in Randotonda Village. The research was conducted in Randotonda Village from April to June 2022. The population was 210 people. Determination of respondents with the purposive sampling method. The total number of respondents is 102 people. Data analysis; coding and grouping data, designing cross tables, and checking data. The influence between variables using multiple regression analysis. Test the validity and reliability of the instrument. The results showed that in the group leadership aspects of cohesiveness and meeting intensity, most of the respondents answered that they were in a low category. All aspects of group work variables are in medium and low ratings. Aspects of factors outside the group of high formal and non-formal leader support. Productivity and member satisfaction aspects are in a low category. There is an influence between characteristic group variables and group work variables partially on the level of group effectiveness. Out-of-group variables have no effect on group effectiveness level variables.

Uji Aktivitas Antijamur Bacillus spp. terhadap Colletrotrichum scovilei Penyebab Antraknosa Cabai Rawit

Diksa Gargita — 2023-05-28

Anthracnose caused by the Colletotrichum scovillei is main diseases of cayenne pepper (Capsicum frutescens L.) that affect on plant productivity. The control of plant diseases caused by pathogenic fungi has been widely reported by utilizing of biological agents that applied in biofungicides. Bacillus spp. was reported to have antagonistic abilities against several pathogenic fungus. The purpose of this study was to determine the antagonistic ability of several Bacillus species against Colletotrichum scovillei. The begins was rejuvenatio of the C. scovillei and B. subtillis, B. cereus, B. coagulans, B. thuringiensis that have been identified. The inhibition of Bacillus spp. on the growth and biomass of C. scovillei was tested in vitro, as well as testing the inhibition of Bacillus spp. filtrates on C. scovillei colonies. The inhibitions of Bacillus spp. against the growth of C. Scovillei were ranged from 91.36% to 96.46% and a percentage inhibition on biomass of C. scovillei were ranged from 85.35% to 88.53% compared to the control. Bacillus spp. filtrates was tested at concentrations of 20%-90% were able to inhibit the growth of C. scovillei colonies with a percentage inhibition up to 99.84%. The good quality standard of biological agent must have >70% of inhibition in vitro. The inhibition that occurs by Bacillus spp. on the growth of C. scovillei is likely due to competition for nutrient and space. And other, the possibility of an antagonistic mechanism in the form of the presence of chitinase, which is one of the antifungal metabolite compounds.

PENGARUH ARAH AKSIAL DAN KEBERADAAN BUKU DAN RUAS TERHADAP KADAR AIR DAN BERAT JENIS EMPAT JENIS BAMBU DIKAWASAN HKM DESA AIK BUAL

Febriana Tri Wulandari — 2023-05-23

Bambu dikenal oleh masyarakat memiliki sifat-sifat yang baik untuk dimanfaatkan, antara lain batangnya kuat, ulet, lurus, rata, keras, mudah dibelah, mudah dibentuk dan mudah dikerjakan serta ringan sehingga mudah diangkut. Selain itu bambu juga relatif murah dibandingkan dengan bahan bangunan lain karena banyak ditemukan di sekitar pemukiman pedesaan, bambu menjadi tanaman serbaguna bagi masyarakat pedesaan. Dengan mengetahui sifat fisika maka dapat mengatasi adanya cacat akibat retak dan pecah karena pada saat bambu akan dikerjakan bambu harus dalam kondisi kadar air yang rendah dan berat jenis bambu yang tinggi sehingga tidak mengalami perubahan dimensi. Salah satu kawasaan yang menghasilkan bambu di Nusa Tenggara Barat adalah HKM desa Aik Bual. Bambu di kawasan tersebut selama ini belum pernah dilakukan penelitian untuk sifat fisika bambu. Tujuan dari penelitian ini untuk mengetahui nilai kadar air dan berat jenis bambu dikawasan HKM desa Aik Bual serta mengetahui pengaruh arah aksial dan keberadaan buku dan ruas terhadap kadar air dan berat jenis empat jenis bambu dikawasan tersebut. Kadar air segar bambu petung, bambu ampel, bambu tali, bambu galah : 90,19%, 102,72%, 122,70%, 138,95%. Kadar air kering udara bambu petung bambu ampel, bambu tali, bambu galah : 12,31%, 13,80%, 12,27%, 11,95. Berat jenis segar bambu petung , bambu ampel, bambu tali, bambu galah : 0,63, 0,58, 0,52, 0,49. Berat jenis kering udara bambu petung , bambu ampel, bambu tali, bambu galah : 0,70, 0,71, 0,57, 0,61. Berat jenis kering tanur bambu petung , bambu ampel, bambu tali, bambu galah sebagai berikut : 0,72, 0,70, 0,62, 0,59. Arah aksial dan keberadaan buku dan ruas tidak berpengaruh nyata terhadap kadar dan berat jenis empat jenis bambu di HKM Desa Aik Bual.

EFEK PENGGUNAAN PUPUK BOKASHI TERHADAP PERTUMBUHAN DAN HASIL TANAMAN TERUNG LOKAL (Solanum melongena L)

Josina Irene Brigetha Hutubessy — 2023-04-16

Efforts to increase the growth and production of local eggplant (Solanum melongena L) through chicken manure bokashi fertilizer. Local eggplant or kiku/index eggplant is a type of vegetable plant that can be eaten raw as fresh vegetables and processed with various foods with high nutritional value. The purpose of this study was to study the response of the local eggplant (index finger eggplant) to the different doses and to obtain the optimum dose of chicken manure bokashi fertilizer on the growth and yield of the index finger eggplant. In the study, a randomized block design (RBD) was used with a single factor pattern consisting of 6 treatments of Bokashi Chicken Manure, namely: BA0 = 0 tons/ha, BA1 = 10 tons/ha or 8.4 kg/plot, BA2 = 20 tons/ha ha or 16.8 kg/plot, BA3 = 30 tons/ha or 25.2 kg/plot, BA4 = 40 tones/ha or 33.6 kg/plot, BA5= 50 tons/ha or 42 kg/plot and BA6 = 60 tons/ha or 50.4 kg/plot. Observed variables; plant height (cm), number of leaves leaf area (cm2), fruit diameter (cm), fruit weight per plant (g), and fruit weight per hectare (tons). Dosage of chicken manure bokashi fertilizer 60 tons/ha or 50, 4 kg/plot produced an average plant height of 18.61 cm; the number of leaves 11.09 leaves; leaf area of 791.78 cm²; fruit Diameter of 2.52 cm; The weight of the fruit planted is 0.27 g and the fruit per hectare is 6.48 tons. Applying chicken manure bokashi fertilizer can increase local eggplant growth and yield with an average increase, in plant height by 0.32%, number of leaves by 0.45%, leaf area by 0.11%, fruit diameter by 0.024%, fruit weight per hectare by 0.21 %.

RESPON PERTUMBUHAN ANGGREK DENDROBIUM TERHADAP BEBERAPA JENIS PUPUK CAIR

Ni Komang Budiyani — 2023-04-24

Growth Responses Of Dendrobium Orchid To Several Types Of Liquid Fertilizer. This research is a study that uses plastic pots with a Randomized Block Design (RAK) for treatment which tested only one factor, namely the application of several types of liquid fertilizer, consisting of seven types and four replications so that 28 research pots were obtained. The results of the study aimed to determine the type of liquid fertilizer on the growth of Dendrobium Orchid can have a significant effect. The results prove that the type of fertilizer treatment on Dendrobium Orchid plants has a very significant effect (P < 0.01) on the parameters of root length, wet weight of plants on planting media, wet weight of plants under planting media, dry weight of plants above growing media, and total dry weight. It also had a significant effect (P < 0.05) on the parameters of the total wet weight and dry weight of plants under the Dendrobium Orchid growing media.

METODE ISOLASI JAMUR PATOGEN SERANGGA (ASCHERSONIA PLACENTA) DENGAN MENGGUNAKAN MEDIA POTATO SUCROSE AGAR

Ni Nyoman Putri Sartika Wangi — 2023-05-03

Isolation Method of Insect Pathogenic Fungus (Aschersonia placenta) using Potato Sucrose Agar Media. Cultivating oranges is one of the main fruit commodities in Bali. Citrus cultivation often experiences problems, one of which is insect pests and plant diseases. Pests that often attack are whitefly. Whiteflies cause damage directly or indirectly. It directly results in stunted plant leaves because the whitefly sucks on the young shoots and leaves. Indirectly, the whitefly has been reported as a vector of various diseases caused by viruses. Based on this, it is necessary to control efforts, one of which is by using biological control of insect pathogenic fungi. The pathogenic fungus found in association with the citrus whitefly is Aschersonia placenta. The insect pathogen A. placenta naturally exists in nature and has potential as a biological control agent, however special handling is required in its utilization. One such treatment is the isolation of the fungus from the field for mass cultivation in the laboratory. Isolation poetry using Potato Sucrose Agar (PSA) was the best, of the four isolation methods performed. The method is detailed as follows: the fungal stroma is rinsed with sterile distilled water, with 70% alcohol, then rinsed again with sterile distilled water before being planted in PSA media.