Damage assessment of the Asian corn borer, Ostrinia furnacalis (Lepidoptera: Crambidae), in corn production centers in Indonesia.

Global trading of plant materials, in combination with agricultural practices, may facilitate the spreading of cyst nematodes to so far non-infected areas. Recently Potato Cyst Nematode (PCN) was recognized to be present in Indonesia and both diversity and distribution require further study. Assessment of PCN populations was done by collecting soil samples, determination of morphological characteristics in combination with ITS rDNA and COI mtDNA sequencing. Thirty-seven soil samples were collected from potato fields in the Indonesia archipelago. The results showed the presence of Globodera rostochiensis in 22 out of 37 sampling fields, namely North Sumatra (6 fields), Central Java (12 fields), East Java (3 fields), and -for the first time- in Sulawesi (North Sulawesi) (1 field). The highest observed density was found in Banjarnegara (Central Java), i.e., 872 cysts 100 ml soil−1. Globodera pallida was not recovered. Both ITS and COI characterisation of Indonesian PCN (G. rostochiensis) revealed the virtual absence of sequence variation as compared to most PCN from the rest of the world; the COI sequences were identical to the most common and mostly distributed haplotype around the world. Microsatellite genotyping indicated a higher genetic diversity for populations from East Java than for populations from North Sumatra, suggesting that cysts at the origin of populations in North Sumatra were coming from populations in East Java. These data on species identification, population density, genetic diversity, and distribution of potato cyst nematode over the Indonesian archipelago constitute the very basis for the design of environmentally-sound and effective PCN control strategies.

This study aims to analyze the effect of local own revenue, balance funds and area size on capital expenditure with economic growth as a moderating factor for district / city governments in Central and East Java Provinces. The population in this study are all districts / cities in Central Java and East Java Province. This research uses census method. The secondary data used in this study is in the form of 2015-2017 APBD realization reports obtained from the Director General of Fiscal Balance of the Regional Government, while data on economic growth and area size were obtained from BPS of Central and East Java Provinces. The analysis technique uses structural equation models with Partial Least Square. The results showed that regional original income and balance funds had a significant positive effect on capital expenditure in Central and East Java. The area size has a positive and significant effect on capital expenditure for Central Java but not for East Java. Economic growth moderates the effect of regional income on capital expenditure. Economic growth moderates balance funds towards capital expenditure for Central Java but not for East Java. Overall there is no difference in capital expenditure across districts / cities in the two provinces

Financial performance is a description of the economic results that regional governments are able to achieve at a certain time through regional government economic activities. Local Own-source Revenue (PAD) is one of the financial sources owned by the district. Income comes from various components such as district taxes, district levies, Government Owned Business Entities profits and other income. East Java's PAD in 2022 increase drastically and is in the top five provinces with the highest revenues. This research aims to compare the financial performance of Local Government Budget (APBD) in East Java and Central Java Provincial Governments. This research method is quantitative descriptive using the calculation of five ratios: Independence Ratio, Fiscal Decentralization Ratio, Effectiveness Ratio, Efficiency Ratio and Expenditure Ratio. The data used in this research is secondary data from the East Java and Central Java Province APBD financial reports for the 2018-2022 budget year. The results of this research are based on the Financial Capability Index (FCI) data analysis technique, shows that Central Java region is more capable of financing its regional activities. It shows that Central Java’ FCI is classified as high and East Java is classified as medium performance.

Macroeconomic problems in the short term is not easy to overcome is the problem of inflation. The problem of inflation appears marked by rising prices in general and is continuous. To see the problem of inflation, then made a study. This study aims to look at and analyze the significance of variables PDRB Real, Minimum Wage, and lag inflation to inflation in the region of Jakarta, Banten, West Java, Central Java, Yogyakarta and East Java, North Sumatra, South Sumatra, South Sulawesi, Kalimantan South and Bali. This study uses a dynamic panel models with observational data of 11 provinces 2009-2013. The results of this study states that in partial real GRDP, UMP variables and variable lag inflation have a significant effect on inflation while simultaneously (together) real GRDP variables, variables UMP, and variable lag inflation is also a significant effect on inflation. The implications of these findings are variable real GRDP, UMP, and lag inflation is an appropriate instrument to influence inflation in the region of Jakarta, Banten, West Java, Central Java, Yogyakarta and East Java, North Sumatra, South Sumatra, South Sulawesi, Kalimantan South and Bali. Keywords: Real GRDP, UMP, Lag Inflation, Inflation, Dynamic Panel.

(1) Background: This paper will present an elaboration of the risk assessment methodology by Deutsche Gesellschaft für Internationale Zusammenarbeit GmbH (GIZ), Eurac Research and United Nations University Institute for Environment and Human Security (UNU-EHS) for the assessment of dengue. (2) Methods: We validate the risk assessment model by best-fitting it with the number of dengue cases per province using the least-square fitting method. Seven out of thirty-four provinces in Indonesia were chosen (North Sumatra, Jakarta Capital, West Java, Central Java, East Java, Bali and East Kalimantan). (3) Results: A risk assessment based on the number of dengue cases showed an increased risk in 2010, 2015 and 2016 in which the effects of El Nino and La Nina extreme climates occurred. North Sumatra, Bali, and West Java were more influenced by the vulnerability component, in line with their risk analysis that tends to be lower than the other provinces in 2010, 2015 and 2016 when El Nino and La Nina occurred. (4) Conclusion: Based on data from the last ten years, in Jakarta Capital, Central Java, East Java and East Kalimantan, dengue risks were mainly influenced by the climatic hazard component while North Sumatra, Bali and West Java were more influenced by the vulnerability component.

Maize has been identified as an excellent alternative to rice as a staple food in the Philippines. The Asian corn borer (ACB; Ostrinia furnacalis Guenée), one of the most destructive insect pests of maize, damages plants throughout their vegetative and reproductive stages. Most open-pollinated varieties are threatened by pests and diseases. The CGUARD program investigated the potential of traditional Philippine maize as a source of resistance to major insect pests, including ACB. This paper evaluated the response of the selected 149 Philippine traditional maize accessions to ACB at vegetative and reproductive stages through laboratory bioefficacy procedures for potential resistance without the presence of Bt leaf and stalk-feeding resistance were determined through mean larval survival and mean tunnel length, respectively, after 5 d using laboratory- reared second-instar larvae. Improvements in screening procedures for laboratory assays are detailed in this report. Fourteen (14) accessions were identified to have promising leaf-feeding resistance, whereas 30 accessions were identified for stalk-feeding resistance. The resistance of APN 0088, a white glutinous type of maize from Palawan, to both leaf and stalk feeding of ACB was also validated. The results demonstrate the presence of natural resistance to ACB in traditional maize that has been exposed to the threat of the pest for decades. These promising accessions may be utilized to generate ACB-resistant or-tolerant maize, in addition to other breeding programs. Several pigmented varieties with ACB resistance were also identified, which may be further examined for their nutritional properties and potential as functional foods. By utilizing our traditional varieties, we are boosting local maize production that will benefit small-scale farmers and ultimately providing them with a high-performing variety that is crucial in this time of changing climate.

Insecticide protection at the vegetative, reproductive or both vegetative and reproductive (complete) crop growth stages and untreated control was used to assess yield loss due to insect pests at the different growth stages of soybean in Ghana from 2007–2009. The objectives were to determine the economic importance of the two major insect pest guilds in soybean, viz. defoliators and pod feeders, and when to apply control measures for maximum benefit. The defoliators recorded were Podagrica spp., Ootheca mutabilis (Shalberg), Zonocerus variegatus L., Sylepta derogata F., Spodoptera littoralis Boisduval, Amsacta spp. and Helicoverpa armigera Hübner. The pod feeders recorded were the pod-sucking bugs (PSBs) Riptortus dentipes F., Thyanta sp. Aspavia armigera F., Nezara viridula L. and Dysdercus völkeri Schmidt. Generally, insect densities, pod and seed damage were lower while seed yields were significantly greater and similar in plots that were protected at the reproductive stage against PSBs and those protected at both vegetative and reproductive stages. Yield loss ranged between 25.8 and 42.8% in untreated plots, 11.1 and 34.3% in plots that were protected at the vegetative stage, and 5.2 and 11.3% in plots that were protected at the reproductive stage. There was a consistent negative correlation between yield and numbers of PSBs as well as pod and seed damage. These results showed that PSBs that attack soybean at the reproductive stage were the most important insect pests limiting soybean yield in Ghana.

Indonesia as an agricultural country has abundant biomass potential, especially wood waste in Java. The prospect of co-firing is considered ideal to overcome the problem of coal use in boilers. This is also in line with supporting the Indonesian government program in increasing the use of renewable energy. Samples of coal co-firing with wood waste from Central Java and East Java were selected for this study. Furthermore, blending between coal and wood biomass from Central and East Java with a composition ratio of (25%:75%) and (50%:50%). Furthermore, it is predicted based on the risk tendency of slagging and fouling. The risk of slagging, fouling, abrasion, and corrosion with theoretical index. In general, increasing the composition of coal blending with hardwood increases the tendency of slagging and fouling. However, blending coal with hardwood from Central Java at a mixture of (25%:75%) can be recommended because it has a low risk of slagging and fouling.

Background and Aim:A previous study divided Indonesian bovine viral diarrhea virus (BVDV)-1 into subgenotypes BVDV-1a to BVDV-1d based on the partial NS5B gene using strain Bega as reference for BVDV-1a. In fact, it is clustered into BVDV-1c with strain Bega-like Australia. BVDV genotyping has been done on isolates from Jakarta, West and Central Java, but East Java isolates have not been genotyped. This study aimed to analyze genetic variability and amino acid residues in the nucleotide-binding pocket of the NS5B gene from infected cattle.Materials and Methods:Samples were obtained from the Sera Bank originating from active and passive surveillance of cattle that had been tested for BVDV antigen from 2013 to 2017. Detection of the p80 antibody and BVDV genotyping was carried out using ELISA and nested-multiplex-polymerase chain reaction (PCR), respectively. We defined 15 nested PCR products for partial sequencing of NS5B. Those field samples were selected from each location and year using proportional calculation as a representative sample. Homological and phylogenetic analyses of the partial NS5B gene were performed using BLAST and MEGA version 6.Results:Based on the phylogenetic tree analysis using 360 nucleotides as the partial NS5B gene, Indonesian BVDV-1 isolates from Central and East Java were subdivided to BVDV-1a (n=9), BVDV-1b (n=1), and BVDV-1c (n=5). In the present study, the homology of BVDV subgenotype -1a, -1b, and -1c was compared to the BVDV GenBank data and found 90-93%, 93%, and 92-95% respectively with the average pairwise distance of 0.207. A point mutation was shown at R283K of all BVDV isolates based on the sequence of three amino acid residues R283, R285, and I287 in the nucleotide-binding pocket as a part of the encoded RNA-dependent RNA polymerase.Conclusion:This study revealed the genetic variability of BVDV infecting cattle in Central Java and East Java, Indonesia, the subtypes BVDV-1a, BVDV-1b, BVDV-1c, and a point mutation at the R283K residue.

The relative salt tolerance of two sorghum cultivars [Sorghum bicolor (L.) Moench., cvs. Northrup King 265 and Asgrow Double TX] at three different stages of growth was determined in a greenhouse experiment. Plants were grown in sand cultures irrigated four times daily with modified Hoagland's solution. A nonsaline solution and six solutions salinized with NaCl and CaCl2 (2: 1 molar ratio) provided treatments with osmotic potentials (ψs) ranging from −0.05 to −1.05 MPa. The saline treatments were imposed for 30 days beginning at either Stage 1, 4, or 7 as defined by Vanderlip and Reeves (Agron J. 64:13, 1972). The 30-day stages are referred to here as the vegetative, reproductive and maturation stages although the first stage may have included initial panicle differentiation. Both cultivars were most sensitive to salinity during the vegetative stage and least sensitive during maturation. Based on a nonlinear least-squares analysis, grain yield reductions of 50% were predicted at ψs=−0.68, −1.02, and −1.14 MPa for NK265 and at −0.62, −1.00, and −1.10 MPa for Double TX when salinized during the vegetative, reproductive, and maturation stages, respectively. Although salinity had no significant effect on mean kernel weights, significant growth stage effects and interaction indicated that kernels were heaviest for plants salinized during the vegetative stage. Stover yields were significantly reduced by salination during the vegetative stage but were unaffected when plants were salinized during the maturation stage. Salination during the reproductive stage also decreased stover yield of Double TX but the effect was smaller than that during the first stage. Stover yield of NK265 was unaffected by salinity at this stage. Mineral analysis of the first leaf below the flag leaf at harvest indicated that both cultivars tended to exclude Na from the upper leaves. Ca and Cl concentrations increased with increased salinity in plants salinized during the maturation stage but salination in earlier stages decreased Ca concentration of this upper leaf at harvest and had no effect on the final Cl concentration. Phosphate and K concentrations decreased when plants were salinized during the third stage but increased when plants were salinized during the vegetative and reproductive stages. Mg was unaffected by salinization during the first and last stage but decreased when plants were salinized,during the reproductive stage. An extensive data base now exists which describes the salt tolerances of many different crops (Maas and Hoffman 1977; Maas 1986). These data express yield responses as a function of the average salt concentration in the rootzone. Generally, these data apply only if salinity is fairly uniform from the seedling stage to maturity. Except for germination, little information exists on the tolerances of crops at different stages of growth. Such information could be invaluable to optimize the use of limited water resources. Knowledge that crops are more tolerant during some stages of growth will improve new strategies for utilizing saline drainage waters (Rhoades 1984). Several studies indicate that tolerances do change as the crop develops and matures, but none of these studies completely separated the effects of duration of treatment from the stage of growth that the crop was treated (Ayers et al. 1952; Kaddah and Ghowail 1964; Kovalskaia 1958; Lunin et al. 1961 a, 1961 b; Maas et al. 1983; Ogo and Sasai 1955; Piruzyan 1959; Verma and Bains 1974). Comparisons of sensitivity during specific phenological stages are confounded when treatment periods are of unequal duration. This study was initiated to determine the sensitivity of grain sorghum [Sorghum bicolor (L.) Moench] to salinity during three 30-day periods of growth. Francois et al. (1984) recently reported that sorghum is a moderately salt-tolerant crop. In field plot tests, grain yields of two cultivars decreased 16% per unit increase in salinity (electrical conductivity of saturated soil extracts from the rootzone) above 6.8 dS/m. They further reported that both cultivars were significantly more tolerant at germination than at later stages of growth. Soil water salinities above 8.2 dS/m delayed germination but full germination occurred within 10 days at salinities up to 22 dS/m. Treatments in the present study were designed to assess plant growth and yield responses to 30-day exposures to salinity beginning at either the 2-leaf stage, at the beginning of rapid culm elongation, or after anthesis.

Dalbergia latifolia is commercial tropical tree species known for its beautiful heartwood, mainly used for furniture and musical instrument. High market demand has put concerns on its sustainability and conservation aspects in Indonesia. Ninety-five specimens of D. latifolia were collected from eight populations of Java, Lombok, and Sumbawa Island to study intraspecific variability and diversity using SRAP. One hundred and eighty SRAP loci with 54.03% ± 4.35% polymorphism obtained from PCR amplification of 10 primer combinations, with the average PIC for these primers of 0.28. Genetic diversity and variability measures were calculated using GenAlEx software indicating a relatively low-mid level of percentage of polymorphic loci (PPL) (54.03%), effective number of alleles (Ne) (1.255), Shannon information index (I) (0.242), and heterozygosity (He) (0.156) on average. The highest value (I = 0.309, He = 0.196) was observed in population P2CJ (Central Java), followed by West Java of P1WJ (I = 0.300, He = 0.191) and West Sumbawa of P7Wsumb (I = 0.257, He = 0.169), while the lowest (I = 0.202, He = 0.129) was found in West Lombok (P4WL). The genetic relationships were measured from genetic distance and identity from the two-pairwise calculation, PCoA, and STRUCTURE analysis. The relative homologous population is found between populations Central and West Java of P2CJ and P1WJ (Nei uD = 0.031), suggesting these populations have the same origin and formed one population, while the most distinct (Nei uD = 0.157) was recorded between Sumbawa regency (P6Sumb) and East Java (P3EJ). The results from PCoA showed that all individuals are placed in three groups almost in accordance with their respective islands, i.e. a group comprised inclusively trees from Sumbawa island, a group of Lombok and some Central Java trees, and a group of trees from Java with the exclusion of some trees of Central Java that were clustered with trees from Lombok island. This result was also supported by STRUCTURE analysis, which showed that Sumbawa, Lombok, and West-East Java populations formed their respective clusters, and Central Java population contains a mixture of West-East Java and Lombok populations. This may suggest evidence of complex origin, thus needing further study to clarify. It is recommended that the populations with the highest value of genetic diversity (Central and East Java) are to be maintained as the source of the gene pool for genetic enrichment programs.

The effects of short-term waterlogging on mungbean and recovery from the damage were studied in a plastic greenhouse. Pot-grown plants of two mungbean cultivars, KPS1 and CNXP-49 were waterlogged for eight days, at the vegetative and reproductive growth stages. Photosynthetic rate (P), transpiration rate (Tr), diffusive resistance (rs) and leaf water potential (Ψl) were measured at the 1st, 4th and 8th day of the 8-day waterlogging treatment and at the 4th and 8th day after the end of waterlogging. P was reduced significantly by waterlogging. It was reduced by 58 and 64% at the 8th day of waterlogging at the vegetative and reproductive stages, respectively, in KPS1 and, by 76 and 82%, respectively, in CNXP-49. Tr was reduced by 48 and 66% in KPS1 and CNXP-49 respectively, at the 8th day of waterlogging at both stages. The diffusive resistance at the 8th day of waterlogging was increased by 79 and 83%, in KPS1 and CNXP-49, respectively, at the vegetative stage, and by 76 and 79% at the reproductive stage. All these physiological parameters of both cultivars recovered to almost normal values within 4 days after the end of waterlogging at the reproductive stage and within 8 days at the vegetative stage. Waterlogging did not affect Ψl, indicating that the decrease in P and Tr was not associated with leaf dehydration. Waterlogging at the vegetative and reproductive stages significantly reduced the dry matter accumulation during and after the waterlogging in both KPS1 and CNXP-49. Final seed yield in KPS1 and CNXP-49 was reduced by 16 and 19%, respectively, by the waterlogging at the vegetative stage and by 23 and 30%, respectively, by that at the reproductive stage. Although even short-term waterlogging markedly affected P, Tr and rs of mungbean, the damage particularly in P and leaf growth was quickly recovered after the end of waterlogging and the reduction of seed yield was less than that expected from the damage in the physiological characteristics. These results, suggest that mungbean has an ability to recover from the short-term waterlogging damage and that the response to waterlogging varies with the cultivar.

Organic fertilizers are presently being recommended for use on wetland rice, as a supplement to inorganic fertilizers. A survey on the availability of materials and preparedness of farmers to utilize organic fertilizers was carried out in 2010 in 10 regencies within three provinces in Java, namely four regencies in West Java, three in Central Java, and four in East Java. The survey was carried out using a structured questioner involving 63 farmer-groups as respondents. Correlation analyses were done among 15 variables, and t-test was applied for paireddata obtained from the dry and wet seasons. Majority of the farmers were empirically familiar on the advantage of using organic fertilizer. However, their knowledges on its benefit were limited to the immediate results, such as on increase of grain yield, better grain quality, and more vigorous crop growth. The number of farmers familiar with the composting technique was in lower proportion than those of the unfamiliar ones. Not all farmers familiar with the composting technique however, were actually practicing their knowledge, only about 25% in West Java, 15% in Central Java, and 35% in East Java. The amount of organic fertilizer applied by farmers was generally far less than that of the recommended, only 0.41 t/ha in West Java, 0.39 t/ha in Central Java, and 1.2 t/ha in East Java. Rice straw from the wet season harvest was either burned (30% in West Java, 38% in Central Java, and 15% in East Java), used for feed (10% in West Java, 22% in Central Java, and 46% in East Java), or returned to the soil (60% in West Java, 40% in Central Java, and 39% in East Java). Those figures were somewhat similar with those on the dry season. The use of organic fertilizer was hampered partly by the lack of knowledge on long-term benefit, and due to the unavailability of manure. The number of livestock owned by farmer, the farmer’s practice of making compost, and the availability of manure in each household, each was significantly correlated to the amount of organic matter applied by farmers. Presently, farmers seem to be not yet ready to use organic fertilizer as a supplement for inorganic fertilizer. Integration of rice crop-livestock farming is suggested to be campaigned and facilitated by the Government, in order that the farmers are able to apply the organic fertilizer. This requires that farmers to be assisted for possessing livestock, through a credit-scheme program.

Indonesia Q uality S tandard (QS) for ambient SO 2 for 1 hour time average i.e. 900 μg/m 3 (equivalent to 36 0 μg/m 3 in24 hour time average ) regulated in the Government Regulation No. 41 of 1999 is the most loose compared to the ambient SO 2 standards of other countries in the world including WHO QS guideline. This QS is not expected to guarantee the protection of public health in Indonesia. Therefore more stringent QS alternative for ambient SO 2 is required. This research examines benefit values in public health aspect if Indonesia tightens its ambient SO 2 QS. Two alternative QS for SO 2 are used i.e 196 μg/m 3 (equivalent to 78 μg/m 3 in24 hour time average ) referring to U.S. EPA and 750 μg/m 3 (equivalent to 36 0 μg/m 3 in24 hour time average ) referring to PUSARPEDAL. First step is to map distribution of SO 2 ambient concentrations in Indonesia. The result indicates that Provinces of Jakarta and Banten have exceeded both alternative QS while Provinces of Yogyakarta, West Java, Central Java, East Java, Bali, and North Sumatra only exceed the alternative QS of 196 μg/m 3 . From the public health aspect, by attaining to the alternative QS of 750 μg/m 3 , Jakarta and Banten will reduce incidence of ARI by 95% and 98%. By attaining to the alternative QS of 196 μg/m 3 , East Java, Bali and North Sumatra will reduce the incidence of ARI by 59%, 51%, and 5%.

Field studies were conducted to determine the efficacy of single trait Bt corn product (Bt11xGA21) against the Asian corn borer, Ostrinia furnacalis (Guenee). The studies were set up in two sites, namely: Barangay Carabatan Punta, Cauayan, Isabela and Barangay San Isidro, General Santos City, South Cotabato, Philippines, at vegetative and reproductive stages of corn, for two seasons (dry and wet), and with artificial and natural infestation of Asian corn borer. No Asian corn borer survived on Bt corn (Bt11xGA21) during both vegetative and reproductive stages in both trial locations while survival of Asian corn borer on non-Bt (GA21) corn was consistently higher during reproductive stage of corn in both sites. Therefore, Bt maize, Bt11xGA21, remains highly efficacious against the Asian corn borer up to the present, since its commercial launch in the Philippines, a decade back.