JURNAL SAINS TEKNOLOGI & LINGKUNGAN

Konservasi Tanaman Pangan, Obat, dan Pewarna Berdasarkan Kearifan Lokal Masyarakat Desa Sesait, Kecamatan Kayangan, Kabupaten Lombok Utara

2025-06-16T05:23:30+08:00

The history of Sesait Village, which used to be 90% of the Kayangan sub-district area. The tradition in Sesait Village is the rules for nurak like "aji makem" in the belek grave. This tradition uses plants as the main ingredients in this tradition. The plants used are betel leaves, bitter melon (pare bulu/pare rau), beleleng, elas. The food, dye and medicinal plants in Sesait Village are very diverse. Food, dye and medicinal plants have various benefits, not only as food, dye and medicinal plants. Efforts to conserve food, dye and medicinal plants are carried out by the people of Sesait Village by planting these plants in their own yards

Seed Bank Gulma Pada Beberapa Kedalaman Tanah Tegakan Jambu Mete di Lahan Kering

2025-06-16T04:59:08+08:00

The dynamics of weed invasion in cashew guava is influenced by the potential of the standing soil as a weed seed bank. Therefore, research was carried out which aimed to examine weed species that had not yet grown because environmental factors were not yet supportive. The first research used a descriptive method and collected data in the field using an exploratory survey method. The second research used an experimental method, by observing the potential of various soil depths of cashew stands as a weed seed bank. The research results showed that 17 weed families were found in cashew plantations, consisting of 2 Ciperaceae species, 9 Poaceae species and 21 broadleaf species. The highest diversity, population and ability to grow simultaneously Weed bank seed occurs at a soil depth of 0 ± 30 cm, then decreases at a soil depth of > 30 ± 40 cm and is very low at a soil depth of > 40 ± 50 cm. Seed bank weed species which are always dominant at various soil depths are dominated by poaceae and broad-leaf weeds so that the number of species, the percentage that grows and the dry biomass weight is significantly higher than that of sedge weeds. The size of the seed bank is determined by the combination of seeds produced by previously growing weeds. So weed seeds will remain a problem as long as there is a supplier for these seeds.

Instalasi Pengolahan Air Limbah Rumah Sakit Umum Daerah Provinsi Nusa Tenggara Barat

2025-06-16T04:45:28+08:00

Wastewater management in hospitals is an important aspect to maintain environmental quality and public health. This research evaluates the effectiveness of the Waste Water Treatment Plant (IPAL) at the Regional General Hospital of West Nusa Tenggara Province (RSUDP NTB) using a biofilter system. The research was conducted for 30 days with a focus on operational observations, interviews with staff, and analysis of wastewater treatment data. The results show that the NTB RSUDP WWTP consists of seven units with varying capacities and involves pre-processing and main processing stages. Despite comprehensive operations, challenges such as pipe blockages and problems with flow meters still occur. Recommendations include improving routine maintenance, optimizing processing processes, and outreach regarding solid waste disposal.

Parameter Genetik Beberapa Karakter Kuantitatif Galur S3 Tanaman Jagung di Lahan Kering

2025-06-16T04:27:09+08:00

This research aims to determine genetic diversity, broad heritability and genotypic correlation of several quantitative characters of the S3 line of corn plants in dry land. Treatment of 30 S3 lines, arranged in a randomized block design, two replications. The characters observed included the variables of flowering, growth, yield components, yield and maturity. The observation data were analyzed using analysis of variance at 5 percent significant level, then genetic variance, phenotypic variance, heritability and genetic diversity coefficient were calculated. Genotypic correlation analysis was also carried out in this study. The results show that ASI and yield have wide genetic diversity; while cobs dry weight per plant is classified as medium and other characteristics are classified as narrow. Heritability in a broad sense is relatively high, obtained at silking time, harvesting time and yield. Eight other characters have moderate heritability and the rest have narrow heritability. A high negative genotypic correlation with leaf angle was obtained for leaf area; while the other four characters have a low negative correlation. Harvesting time had a low positive correlation with flowering variables; other characters are not correlated. Yield was highly positively correlated with plant height; while cob length, cob diameter and cob weight were moderately positively correlated. Plants selected for selfing in the next generation are taller plants, with more leaves and earlier silking time.

Periode Kritis Jagung (Zea mays L.) Berkompetisi dengan Gulma di Lahan Kering

2025-06-16T04:10:40+08:00

Research into the critical phase of weed competition in maize aims to determine weed control at the right time. The study used a randomized block design consisting of eight treatments with weed-free (WWF) and weed-free (WF) plant age periods up to 10, 20, 30, 40, 50, 60, 70, and 80 days after planting (DAP). Each treatment was randomly repeated in three blocks, resulting in 54 experimental units The observation parameters include weed population, dry biomass weight of weeds and maize, plant height, leaf area, ear length, ear diameter and dry weight of maize kernels per plot. Data analysis using analysis of variance and William's statistical test. The results of the study showed that the critical period for corn competition with weeds on dryland was about 20 - 30 DAP when the corn was planted. If weeds are removed after the plants are more than 30 days old, the harvest cannot be saved. Plants competing with weeds for 40, 50, 60, 70, and 80 days experienced yield reductions of 60.32%, 82.84%, 98.66%, 99.99%, and 99.99%, respectively. In contrast, plants that were only weed-free up to the age of 10, 20, and 30 days showed yield losses of 98.66%, 80.16%, and 61.40%, respectively. It is recommended to start controlling corn weeds on dry land 20 days after planting and to avoid weeding 30 days after planting.