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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) AGRIVITA, Journal of Agricultural Science Jurnal Kesehatan Prima Social, Humanities, and Educational Studies (SHEs): Conference Series
Yuni Widyastuti
Balai Besar Penelitian Tanaman Padi, Jl. Raya 9, Sukamandi, Subang, Jawa Barat Telp. (0260) 520157, Faks. (0260) 520158
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Education Health Professions Languange, Linguistic, Communication & Media Nursing Public Health Social Sciences

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 1 
PERFORMANCE OF PROMISING HYBRID RICE IN TWO DIFFERENT ELEVATIONS OF IRRIGATED LOWLAND IN INDONESIA Widyastuti, Yuni; Satoto, Satoto; Rumanti, I.A.
AGRIVITA, Journal of Agricultural Science Vol 37, No 2 (2015)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The hybrid rice program has been established since early 1990’s at the Indonesia Center for Rice Research (ICRR). Twenty-four experimental hybrid rice varieties which have been developed were tested in lowland rice fields in Sukamandi (West Java) and Batang (Central Java) during the dry season and the rainy season of 2012. Randomized complete block design (RCBD) with three replications was used in each location. The results showed that grains yields were affected by locations, seasons, and genotypes. The genotypes x locations x seasons interaction effect was significant; therefore, the best hybrid was different for each location and season. A7/PK36 hybrid has the best performance in Batang during the dry season, while A7/PK40 and A7/PK32 are the best hybrids in the rainy season. In Sukamandi, nine hybrids were identified as better yielder than that of the check cultivar in the dry season, but not so in the rainy season. Using the correlation and path analysis, we found that the number of panicles per hill and the number of filled grains per panicle could be used as selection criteria for yield in hybrid rice. Keywords: agronomic performance, correlation, hybrid rice, lowland 
YIELD STABILITY OF NEW HYBRID RICE ACROSS LOCATIONS Satoto, Satoto; Rumanti, Indrastuti Apri; Widyastuti, Yuni
AGRIVITA, Journal of Agricultural Science Vol 38, No 1 (2016): FEBRUARY
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v38i1.675

Abstract

The adaptation of hybrid rice varieties mostly are in specific location and season, but there are some of the varieties have a wide adaptation then adopted by the farmer in the large area. Replicated yield trials were conducted to study the stability of hybrid rice yield and identify the best location to optimize their yield per ha. We have conducted the trials in three location such as Sukamandi, Salatiga and Malang during two seasons in 2011. We are analyzing data across location and season  using AMMI and Eberhart Russel methods. The AMMI analysis showed that the  IR79156A/PK88 was adaptable to favorable environments but unstable. This hybrid is always performing well and produce the higher yield compare to check variety. Some of other hybrids  were good only in specific location, i.e. IR62829A/BP2280-1E-12-22 and IR58029A/BP2 280-1E-12-22. Those hybrids produced higher yield in Salatiga and Malang, respectively. Seem to AMMI analysis, the result of Eberhart and Russells method also showed that IR79156A/PK81  was the best hybrid with regression slope (b) around 1 with the yield average higher than average of all hybrids. It indicated that this hybrid has a wide adaptation and probably can be cultivated in the wider ecosystem.
Improving the Quality of Thematic Learning through the Discovery Learning Model in Class V SDN Legok Kebasen Students Widyastuti, Yuni
Social, Humanities, and Educational Studies (SHEs): Conference Series Vol 3, No 3 (2020): Social, Humanities, and Educational Studies (SHEs): Conference Series
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (165.849 KB) | DOI: 10.20961/shes.v3i3.45868

Abstract

The background of this research is the low quality of thematic learning and the use of less varied methods. The aim of this Classroom Action Research is expected to improve the quality of thematic learning through the Discovery Learning model for fifth grade students of SDN Legok Kebasen. This Classroom Action Research was conducted in 2 cycles, each cycle consisting of four stages, namely planning, implementing, observing and reflecting. The implementation of the action uses the Discovery Learning model with a systematics of initial activities, core activities and final activities. The results showed that students' learning completeness increased from 47.62% in the initial study to 66.67% in the first cycle and 90.48% in the second cycle. Student activity also increased from 23.86 in the initial study to 24.95 in the first cycle and 27.38 in the second cycle. The class average increased from 61.43 in the initial study to 70.00 in the first cycle and 75.24 in the second cycle. From the research results it can be concluded that the application of the Discovery Learning model can improve the quality of learning.
Analysis of Factors Influencing The Drop Out of Family Planning Acceptors Widyastuti, Yuni; Menap, Menap; Sastrawan, Sastrawan; Pratiwi, Intan Gumilang
Jurnal Kesehatan Prima Vol 18, No 2 (2024): AUGUST
Publisher : poltekkes kemenkes mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32807/jkp.v18i2.1706

Abstract

Population issues are still the main focus of both developed and developing countries including Indonesia. The government through the Population and Family Planning Sector continues to strive to reduce the Total fertility Rate by reducing the drop out rate of contraceptive use. Drop out is the non-participation of fertile age couples to become family planning acceptors. The purpose of this study was to determine the factors that influence the drop out of family planning acceptors in West Lombok Regency. Previous studies stated that the factors causing drop out were knowledge, attitudes and distance from health services. The difference between this study and previous researchers is the research method used, the location of the study and the time of the study, and to determine the most dominant factors causing drop out. The research design used Cross-Sectional, a population of 135,076 with a sample size of 100 fertility age couple obtained randomly using the proportional to size method, the research instrument used a questionnaire. Data analysis used the chi square test to determine the effect and the multivariate logistic regression test to see the most dominant effect. Results: Chi Square test of knowledge factor obtained p value 0.000 < from alpha (0.05), motivation factor obtained p value 0.0005 < from alpha (0.05), access factor obtained p value 0.961 > from alpha (0.05), insurance ownership obtained p value 0.001 < from alpha (0.05) and work obtained p value 0.000 < from alpha (0.05) Conclusion: there is an influence of knowledge, motivation, insurance ownership and respondent's work with the occurrence of drop out in family planning acceptors while respondent access has no influence on the occurrence of drop out in West Lombok Regency. While the most dominant factor is motivation with OR value 5.575, meaning KB acceptors who do not have strong motivation have a risk or tendency of 5 to 6 times dropping out as family planning acceptors.
Analysis of Factors Influencing The Drop Out of Family Planning Acceptors Widyastuti, Yuni; Menap, Menap; Sastrawan, Sastrawan; Pratiwi, Intan Gumilang
Jurnal Kesehatan Prima Vol. 18 No. 2 (2024): AUGUST
Publisher : poltekkes kemenkes mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32807/jkp.v18i2.1706

Abstract

Population issues are still the main focus of both developed and developing countries including Indonesia. The government through the Population and Family Planning Sector continues to strive to reduce the Total fertility Rate by reducing the drop out rate of contraceptive use. Drop out is the non-participation of fertile age couples to become family planning acceptors. The purpose of this study was to determine the factors that influence the drop out of family planning acceptors in West Lombok Regency. Previous studies stated that the factors causing drop out were knowledge, attitudes and distance from health services. The difference between this study and previous researchers is the research method used, the location of the study and the time of the study, and to determine the most dominant factors causing drop out. The research design used Cross-Sectional, a population of 135,076 with a sample size of 100 fertility age couple obtained randomly using the proportional to size method, the research instrument used a questionnaire. Data analysis used the chi square test to determine the effect and the multivariate logistic regression test to see the most dominant effect. Results: Chi Square test of knowledge factor obtained p value 0.000 < from alpha (0.05), motivation factor obtained p value 0.0005 < from alpha (0.05), access factor obtained p value 0.961 > from alpha (0.05), insurance ownership obtained p value 0.001 < from alpha (0.05) and work obtained p value 0.000 < from alpha (0.05) Conclusion: there is an influence of knowledge, motivation, insurance ownership and respondent's work with the occurrence of drop out in family planning acceptors while respondent access has no influence on the occurrence of drop out in West Lombok Regency. While the most dominant factor is motivation with OR value 5.575, meaning KB acceptors who do not have strong motivation have a risk or tendency of 5 to 6 times dropping out as family planning acceptors.
Identifikasi Toleransi Kekeringan Tetua Padi Hibrida pada Fase Perkecambahan Menggunakan Polietilen Glikol (PEG) 6000 Widyastuti, Yuni; Purwoko, Bambang Sapta; Yunus, dan Muhamad
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 44 No. 3 (2016): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (386.324 KB) | DOI: 10.24831/jai.v44i3.13784

Abstract

ABSTRACTDeveloping of  drought tolerant hybrid rice varieties requires parental lines which have tolerance to drought. Polyethylene glycol (PEG) has been widely used as an osmotic solution for detecting drought tolerance at germination stage of rice. The objectives of this experiment were to evaluate variables of drought tolerance at germination stage  and to select drought tolerance of parental lines using osmotic solution PEG 6000 at concentration of 25%. The experiment was conducted at the greenhouse ICABIOGRAD Cimanggu Bogor, during April-May 2014. The design of the experiment was arranged in factorial randomized block design with three replications. The first factor (genotype) had 21 levels and the second factor (osmotic potential) had two levels (0 and 25% concentration levels of PEG 6000). Based on the principal component analysis, six primary indicators were proposed for drought tolerance of rice at germination stage, i.e., germination percentage, seed vigor, seminal root length, seedling length and dry weight of seminal root. Based on the clustering analysis, at 73.76% of similarity rate, the 21 tested genotypes were divided into 2 groups. The genotypes which showed similar responses with Salumpikit were IR 58025B, GMJ 14B, IR 80154B, GMJ 15B, R 3, PK 90, and PK 12 respectively. Keywords: drought tolerance, germination, hybrid rice PEG, parental lines
Effects of row ratio and plant spacing for enhancing hybrid rice seed production in the tropics Wibowo, Bayu Pramono; Widyastuti, Yuni; Prabowo, R. Noviadi; Suparman, Cecep; Satoto; Sitaresmi, Trias
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 52 No. 1 (2024): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v52i1.51380

Abstract

The seed yield production determines the success of the development of hybrid rice. Here, an effective and efficient cultivation technology for producing hybrid rice seeds is optimized through spacing and row ratio management. This study aimed to evaluate the effects of spacing and row ratio of restorer (R) : CMS (A) on F1 hybrid rice seed production. The experiment was conducted at the Indonesian Center of Rice Research's experimental field in the dry season of 2016, using parental lines HIPA18 hybrid rice, i.e., CMS: IR79156A line and Restorer: IR53942 line. The experiment was laid out in a strip-plot design replicated three times. Two factors were studied, i.e., plant spacing between CMS lines and row ratio R by A-lines. The results indicated that the highest HIPA18 seed production was obtained from 20 cm x 20 cm spacing of CMS with row ratio 2R:14A, i.e., 3.62 tons ha-1. Plant spacing and row ratio interactions were improved tillers number per plant of restorer and F1 seed yields. Keywords: A-lines; CMS; F1 hybrid rice; R-lines
Co-Authors Bambang Sapta Purwoko I.A. Rumanti Indrastuti Apri Rumanti Menap Muhammad Luthfi Prabowo, R. Noviadi Pratiwi, Intan Gumilang Sastrawan, Sastrawan Satoto Satoto Satoto Satoto Satoto Suparman, Cecep Trias Sitaresmi Wibowo, Bayu Pramono Yunus, dan Muhamad