Rainfed lowland has great potential to produce rice in South Sumatra Province. Rice cultivation in such marginal lowland needs technological innovation for sustainable use. This study aimed to analyze the crop performance and farming feasibility of a New Superior Variety (VUB) in rainfed rice cultivation. The study was carried out on 2019/2020 in Tugu Jaya Village, Lempuing District, OKI Regency. It was implemented in a demonstration plot of rice cultivation covering 2 hectares, using Inpari 30 and 43 varieties. The plant spacing was in accordance with 2:1 “jajar legowo” planting system. This was compared to the tile planting system outside the demonstration plot using IR 42 variety, which was planted by the local farmers. The results of observations of plants’ performance one day before harvest showed that the tallest plant was IR 42 (109.1 cm), the most tillers were from Inpari 43 (19.7 tillers), the longest panicle was of IR 42 (25.1 cm) and the highest harvested crop grain production was from Inpari 30 (6.8 tonnes/ha). In terms of business feasibility, judging from the resulting production and financial indicators, all three varieties were suitable for planting in rainfed lowland. Furthermore, of the three varieties, Inpari 30 on MH 2019/2020 was the most feasible, with a break-even price (BEPr) of Rp. 3,983 per kg; break-even production (BEP) of 1,568 kg per hectare; revenue cost ratio (R/C) of 2.39 and Marginal Benefit-Cost Ratio (MBCR) of 6.96.
Daerah tangkapan air merupakan suatu daerah yang air hujannya diserap ke dalam tanah kemudian diubah menjadi air tanah. Studi ini, hubungan antara definisi daerah tangkapan air dan aliran air tanah regional ditekankan. Tujuan utama dari penentuan daerah tangkapan air ini yaitu untuk mengoptimalkan aliran dasar dalam tanah Tingkat infiltrasi ini tergantung pada curah hujan, jenis tanah dan batuan, kemiringan tanah, jenis penggunaan lahan dan vegetasi. Teknik zonasi ini juga digunakan untuk menjaga kualitas air dan menjaga debit produktifitas air disuatu kawasan, dengan menentukan luas daerah wilayah dan mengkaji daya serap tanah dengan teknik peresapan air melalui penanaman tumbuhan yang tepat dan pembangunan sumur-sumur resapan. Secara umum daerah resapan air di Kota dan Kabupaten Bogor tergolong daerah air tanah langka yang dimasukkan ke dalam Zona III dimana pada daerah ini hanya sedikit ditemukan daerah resapan air, walaupun ada biasanya resapannya tidak berarti. Zona I tersebar sangat terbatas pada bagian timur Kota dan Kabupaten Bogor. Pada area zona II diperbolehkan terdapatnya aktifitas pemukiman dengan batasan-batasan yang secara ekologi Pada zona III tidak diperbolehkan ada kegiatan pengolahan dan aktifitas masyarakat Zona III yang terbentuk di sini bukan merupakan proses pembentukkan secara alami, melainkan akibat penyebaran daerah kedap air yang luas di Zona ini. Penyusunan RT/RW perlu adanya daerah yang ditetapkan sebagai kawasan konservasi sebagai kawasan resapan air tanah
Many processing problems still occur, causing the low quality of raw rubber materials and farmers low-income. This can be seen from the use of coagulants, storage methods and the level of cleanliness. This study was aimed at analyzing the quality and added value of raw rubber materials based on the use of coagulant types. This study was conducted in October - November 2021. Fresh latex was obtained from the rubber plantation in Mulyaguna Village, OKI Regency. Completely randomized design was used with 5 treatments and 4 replications. The coagulants used were the recommended ones (liquid smoke, formic acid), and the commonly used by the farmers (sulfuric acid, aluminum sulfate, and TSP fertilizer). The results of the study showed that liquid smoke and formic acid were better than the coagulants commonly used by farmers, which could be seen from the ash content, initial plasticity, and plasticity retention index. The dry rubber contents (DRCs) using liquid smoke, formic acid, sulfuric acid, aluminum sulfate, and TSP fertilizer were 66.081; 62.978; 59.067; 56.202 and 60.796 respectively. Liquid smoke and formic acid provided the added value for raw rubber materials of 1,203/kg IDR and 792/kg IDR compared to sulfuric acid commonly used by farmers.
Efforts to increase the productivity of lowland paddy in tidal low land can be conducted through improving planting methods and the use of new superior varieties (NSV). This study aimed to find out the effect of using Amator on the cultivation of new high yielding varieties (NSV) in tidal paddy fields. This study used a Split Plot design, with the main plots namely planting equipment: using Amator and Sonor, and as subplots using NSV paddy: Hipa-18, Hipa-20, Hipa-21, and Inpari 22, with 3 replications. The results showed that the average productivity of NSV paddy using Amator was 5.2 t/ha, while that of Sonor reached 6.5 t/ha. Hybrid varieties (Hipa 18, Hipa 20, Hipa 21) grown using Amator produced taller paddy plants, more tillers and longer panicles than the inbred variety (Inpari 22) grown with Sonor. The productivity of the four NSV paddy tested gave a fairly high GDH (Grain Dry Harvest) yield of 5.6 – 6.2 t/ha.
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