SCIENCE AND TECHNOLOGY FOR THE REGION OF CAMBAI SUB-DISTRICT, PRABUMULIH ADMINISTRATIVE CITY

Science and technology for the region of Cambai sub-district,  Prabumulih Administrative city communities have been conducted from February to December 2010.  The programs included training and demonstration  as well as establishment of “Demplotâ€.  The programs which have been conducted were training and demonstration of organic horticultural farming system, integrated organic farming, organic fertilizer, fish farming, chicken stock (ayam arab), and processing of fish feed and poultry feed. The programs were conducted integratedly with related institution of local goverment, university partner (Universitas Palembang) and Sriwijaya University.  Several academic staff and students were also involved during implementation programs. The results showed that there were significantly increased in skills and knowledge of farmers especially in producing organic fertilizer, organic vegetables, integrated organic farming system, fish farming  and chicken stock (ayam arab) in  better ways.  Vegetable productions especially Kangkung, bayam, timun, terung were increased significantly compared to previous farming activitities which were not using organic fertilizer.  In addition, farmers have capabilities to produce self fish feed and poultry feed without purchasing from the stores which were very expensive.  Furthermore, the activity of  target farmer groups were also improved in such a way which could make them more established in order to increase their income in agriculture production activities

Pengaruh Pemupukan terhadap Perubahan Morfofisiologi Dua Varietas Padi pada Kondisi Cekaman Rendaman

Submergence tolerance is plant adaptation to anaerobic or hypoxia condition without significant damage. Changes in morphophysiological characters of rice plant are often related to the plant adaptation to submergence stress. Fertilization might affect plant morphophysiological changes under submergence stress. The objective of this research was to study the effect of rice varieties and fertilizer application on the growth and morphophysiological changes under submergence stress. The experiment was arranged in factorial completely randomized block design with six replications. The first factor was rice varieties consisted of Inpara 5 (V1) and IR64 (V2), while the second factor was fertilizer application consisted of without fertilization (P0) and with fertilizer application (P1). Submergence stress was applied on 28 days old seedlings for 7 days. The results showed that fertilizer application increased aerenchyma formation and plant N content of both IR64 and Inpara 5 varietes. Inpara 5 variety had higher relative chlorophyll content, relative carbohydrate content, and relative plant dry weight thant IR64 variety at 7 days after submergence stress

Increasing the Growth and Production of Irrigated Rice Through the Integrated Application of Rice–Duck–Azolla

The application of integrated agriculture is an effort to reduce dependence up on agrochemicals and increase the absorption of nutrients, especially nitrogen, to increase plant growth and production. Azolla is an algae that can provide nitrogen for rice, while ducks can increase the availability of N, P, and K, as well as the efficiency of nitrogen use. This research aimed to evaluate the role of ducks and Azolla in increasing the growth and production of rice plants. This research was conducted from October 2018 to February 2019 using an experimental method with a nonfactorial randomized block design. The combinations of nitrogen fertilizers, Azolla, and ducks (K) were as follows: K1 = 115 kg N ha−1, without ducks, without Azolla; K2 = 86 kg N ha−1, without ducks, 1,000 kg Azolla ha−1; K3 = 86 kg N ha−1, 3,000 ducks ha−1, 1,000 kg Azolla ha−1; K4 = 58 kg N ha−1, 3,000 ducks ha−1, 1,000 kg Azolla ha−1; K5 = 29 kg N ha−1, 3,000 ducks ha−1, 1,000 kg Azolla ha−1; and K6 = without N fertilizer, 3,000 ducks ha−1, 1,000 kg Azolla ha−1. The results showed that the application of 58 kg N ha−1, 3,000 ducks ha−1, and 1,000 kg Azolla ha−1 (K4) was able to decrease the N fertilizer application by 50% and increase the rice growth and yield by 12.17% and 20.32%, respectively. Therefore, the integrated application of rice–duck–Azolla would support sustainable agriculture

Respon Pertumbuhan dan Hasil pada Tanaman Bayam (Amaranthus sp) terhadap Biofortifikasi Unsur Hara Kalsium (Ca) dan Besi (Fe) dengan Sistem Hidroponik DFT (Deep Flow Technique)

Hasmeda M, Sari IY, Munandar M, Ammar M, Gustiar F. 2021. Growth response and yield of spinach (Amaranthus sp) on biofortification of calsium (Ca) and iron (Fe) with DFT (Deep Flow Technique) system. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-9 Tahun 2021, Palembang 20 Oktober 2021. pp. 721-733. Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).This research was conducted to know the dose of calcium (Ca) and Ferro (Fe) which were the best factor in the increase of plant nutrient which did not disturb the growth and production of Amaranthus sp. by using hydroponic DFT (Deep Flow Technique). This research was conducted at Hydroponic laboratory Agronomy study program Faculty of Agriculture Sriwijaya University which was conducted from November 2020 until April 2021. This research used Amaranthus seed brand “Panah Merah”. The Randomized Block Design with 8 treatments and three replications were used. They were: CFo = AB, C1=200 ppm, C2=400 ppm C3-600 ppm, F1=5 ppm, F2=7.5 ppm and F3=10 ppm. Diversity Analysis used ANOVA and BNT 5%. Parameters being observed were plant height (cm), Number of leaves, leaves greenest level, leaf area (cm2), root volume (ml3), fresh plant weight (g), dry plant weight (g), Calcium concentration (Ca) and Fe concentration in leaves. Research results showed that the increases of Ca and Fe concentration occurred along with the increase of hydroponic solution. The increase of Ca 600 ppm did not inhibit plant growth and the increase of Fe 5 ppm was the maximum concentration which not inhibit the growth of Amaranthus and gave good impacts and optimal plant growth

The Effect of Plant Growth Regulator on Duku (Lansium domesticum Corr.) Flower for Fruit Formation

Plant growth regulators have a significant impact on increasing both quality and quantity of plant yield for either mixed or separated application. The research was aimed to identify the effect of spraying  plant growth regulators on duku flowers for fruit formation. The research was conducted from December 2014 to May 2015 in Sijacarana Local Technical Implementation Unit (UPTD) of Propagation, South Sumatra Province in Ogan Komering Ulu (OKU) Timur Regency. Duku tree used was 15 years old with the height around 10 meter. Complete Randomized Design was used with 3 replications where duku trees as the replicates. The spraying  consisted of 3 single plant growth regulator treatments and 6 mixed treatments which were P1 (BAP 300 mg.L-1), P2 (NAA 300 mg.L-1), P3 (GA3 300 mg.L-1), P4 (BAP 100 mg. L-1 + GA3 200 mg.L-1), P5 (BAP 200 mg.L-1 + GA3 100 mg.L-1), P6 (BAP 150 mg.L-1 + GA3 150 mg.L-1), P7 (NAA 100 mg.L-1 + GA3 200 mg.L-1), P8 (NAA 200 mg.L-1 + GA3 100 mg.L-1), P9 (NAA 150 mg.L-1 + GA3 150 mg.L-1). Spraying was applied twice with a half dosage for each application. First application was performed about one month after flowering, and the second was one and a half month after flowering. Data were analyzed using analysis of variance and least significance difference at α 5%. The measurement of parameters were carried after harvest or 3 months after treatment. Results showed that plant growth regulator positively affected duku fruit formation. GA3 treatment then was considered as the best treatment as it had a unison in fruit maturity, the highest number of fruit per bunch, weight per fruit and total fruit weight per bunch, and had the lowest number of green fruit and seed per fruit

Rice Seedling Resistance due to Seed Priming and Seeding Density under Submergence Stress Condition

The study of rice seedling resistance due to seed priming and seeding density under submergence stress condition was carried out to evaluate the effect of seed priming and also to estimate proper seeding population density to improve rice seedlings vigor under submergence stress condition. The experiment was conducted in tidal freshwater swamp of Sako in Rambutan District, Banyuasin Regency (3.067° S, 104.8616° E). Randomized block design was used where the seeds were soaked into ZnSO4.7H2O solution as priming treatment, and then sown with three different seeding rates: 30, 40 and 50 kg ha-1. Three cultivars consisted of Inpara 3, Inpara 5 and Ciherang were tested. The observation was carried out until 4 weeks after sowing to measure the seedling height, shoot dry weight, carbohydrate content in stem, and leaf chlorophyll. Results showed that all treatments indicated insignificant effect to all parameters. However, the highest result from all parameters was obtained from priming treatment. The higher seeding density the lower dry weight, carbohydrate and chlorophyll content. All three tested cultivars, Inpara 3 gave the best performance.

In-situ Evaluation of Growth Rate and Yield Components of Several Non-tidal Swamp Rice Accessions in South Sumatera

Halimi et al. 2012. In-situ Evaluation of Growth Rate and Yield Components of  Several Non-tidal Swamp Rice Accessions in South Sumatera. JLSO 1(2):107-115Rapid increase of agricultural land conversion has led to the intensified utilization of  non-tidal swamp. The objective of this research was to identify growth rate and yield components of several rice accessions of non-tidal lowland swamp of South Sumatera. This research incorporated the cultivation of nine rice accessions  in  non-tidal swamp area. Research plots were prepared  by local farmers to include  27 plots of 280 cm x 80 cm following the Complete  Randomized Block Design.  Research indicated that rice accessions might be classified into 3 groups of Low Growth Rate (LGRA), Intermediate Growth Rate (IGRA), and High Growth Rate (HGRA) accessions.  Each group has different growth rate according to the field water level during flooding season of < 5 cm, 5 to 6 cm, and >6 cm  per week, respectively. The LGRA group consisted of  Petek (A5) and Senia (A6), the IGRA group consisted of Bone (A1), Pelita Rampak (A2), and Sawo Rimbo (A7) and the HGRA group consisted of Kuning (A3), Siam (A4), Sawah Beling (A8) and Putih Olak (A9). Some yield components tended to decrease as the growth rate increased, and some varied depending on the accessions. For effective and efficient cultivation, farmers should apparently consider growth rate and yield potential to decide which rice accessions to grow

Pertumbuhan dan Hasil Tanaman Bayam (Amaranthus sp) pada Berbagai Komposisi Nutrisi Alternatif Pengganti AB Mix dengan Sistem Hidroponik Deep Flow Technique

Gustiar F, Munandar M, Aprilia NR, Hasmeda M, Amar M, Arsi A. 2021. Growth and Yield of Spinach (Amaranthus sp) in various compositions of Alternative Nutrients to replace AB Mix with Hydroponic System.  In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-9 Tahun 2021, Palembang  20 Oktober 2021. pp. 931-940 . Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI). The high cost of AB Mix hydroponic nutrients, so there is a need for alternative growth nutrients that are cheaper and easily available. Aim of this research was to determine the hydroponic nutrition substitute for AB mix for the growth of spinach (Amaranthus sp). This study used a completely randomized design (CRD) method with four hydroponic nutrition treatments with different ingredients. The treatments given were AB mix fertilizer, NPK-based nutrition, single fertilizer-based nutrition, and organic nutrients. hydroponic nutrient constituents are calculated based on the needs of leaf vegetable plants. Needs Parameters observed were plant height (cm), number of leaves, leaf greenery level, leaf area (cm2), root volume (ml3), plant fresh weight (g), plant dry weight (g), and nitrogen concentration (N) at leaf. Based on the observation of growth parameters, AB mix nutrition treatment showed the best results. However, the fresh weight parameter of the single fertilizer-based nutrient treatment showed results that were not significantly different from the ABmix treatment. In addition to providing the highest yield, the lowest cost requirement is 1 liter of concentrate at a cost of 44,302 IDR so that single fertilizer-based hydroponic nutrients can be recommended as an alternative to AB Mix nutrition

Priming Benih Padi (Oryza Sativa L.) dengan Zn untuk Meningkatkan Vigor Bibit pada Cekaman Terendam

Seed priming has been widely used to improve seedling vigor of several crops such as corn, wheat, and rice. Seed priming with zinc to increase seedling tolerance on submergence stress had never been evaluated. The objective of this research was to identify agronomical and physiological characteristics of several rice genotypes during seedling stage at submergence stress following zinc priming treatment. This research used factorial randomized block design with three replications. The first factor was rice genotypes and second factor was zinc solution of ZnSO4.7H2O. Seeds were soaked with Zn solution at different concentrations namely 0, 2.5, dan 5.0 mM respectively for 24 hours. After that the seeds were germinated on soil media in side the plastic box. Fourteen days-old seedling were submerged in water for 5 days and then return to normal condition for recovery. Parameters being observed included seedling dry weight, shoot carbohydrate, and leaves chlorophyl which were measured after 10 days of recovery. Seedling height was measured once a week from 2nd to 4th week. Results showed that intolerant genotypes to submergence stress grew faster but seedling dry weight, shoot carbohydrate and leaves chlorophyll content were lower compared to those tolerant genotypes. Local and national varieties which were not tolerant to submergence stress could be improved by priming treatment with 5.0mM zinc