Search

Pineapple is a horticultural commodity whose demand is still relatively high because of its need as fresh fruit and processed raw materials. The East Java region contributed 8.92% with Blitar Regency being the second largest pineapple production center after Kediri Regency. Pineapple plants are plants that are sensitive to climate change due to the effects of excessive heat and irregular rain. This can threaten pineapple productivity by reducing yield potential and quality which will derail the harvest. This study aims to study the relationship between elements of rainfall (rainfall intensity and rainy days) and productivity of pineapple plants in Blitar Regency. The research was conducted from June to September 2020 in the pineapple production centers of Blitar Regency, namely Gandusari District, Ponggok District and Nglegok District. The research method used is a survey method with the data used in this research in the form of primary data and secondary data. Primary data obtained from interviews with farmers. The secondary data needed is pineapple productivity in Blitar Regency from the Central Statistics Agency and rainfall data (rainfall intensity and rainy days) from the Central Statistics Agency and Meteorology, Climatology and Geophysics Agency. Correlation analysis was used to determine the close relationship between rainfall and productivity and regression to determine which rainfall element had the most influence on productivity. Based on the results of the analysis, it is explained that the rainfall element has a significant effect on pineapple productivity and can reduce productivity in the three sub-districts in Blitar Regency. [ABSTRACT FROM AUTHOR]

Soil salinity is a limiting factor in agricultural productivity. One of the biological approaches to mitigate the impact of salt stress on plants is inoculating plant growth-promoting rhizobacteria (PGPR) to the plant roots. This study aimed to investigate the eff of PGPR dosage on the growth and yield of shallots at various salinity levels. This study was carried out in the experimental field of Poncokusumo, Malang. The treatments tested consisted of two factors. The first factor was soil salinity level, consisting of four levels: no salinity, NaCl 50 mM, NaCl 100 mM, and NaCl 150 mM. The second factor was PGPR concentration, consisting of four levels: no PGPR, PGPR 10 mL/L, PGPR 20 mL/L, and PGPR 30 mL/L. The sixteen treatment combinations were arranged in a randomized block design with three replications. The data obtained were subjected to the analysis of variance (ANOVA) at a significance level limit of 5%, followed by the Honestly Significant Difference (HSD) test at a 5% significance level for any significant differences. The results showed that the application of 30 mL/L of PGPR reduced EC of the soil and improved plant height, plant dry weight, leaf area, bulb diameter, bulb weight, and the number of bulbs per plant by 33%, 47.3%, 81%, 13%, 34.2%, 98.5%, and 31%, respectively, compared to the treatment without PGPR application under NaCl 150 mM salinity. The application of PGPR at 20 and 30 mL/L dosages significantly increased chlorophyll, flavonoid, and proline indices at NaCl at 100 mM and 150 mM salinity levels compared to the treatment without PGPR. [ABSTRACT FROM AUTHOR]

Oxidative stress is closely associated with the aging process, prompting an investigation into the therapeutic potential of Andrographis paniculata extract, Syzygium aromaticum oil, and Pogostemon cablin oil, herbs known for their widespread medicinal use. This study aimed to assess the antioxidant properties of skincare products, including facial wash, moisturizer, and serum formulated with these oild and extract. Utilizing the DPPH assay to evaluate antioxidant activity, we found that all products displayed antioxidant activity, with the serum showing the greatest efficacy (IC50 value of 2792.17 μg/mL) compared to the moisturizer (IC25 value of 2541.73 μg/mL) and facial wash (IC25 value of 2752.01 μg/mL). Notably, all products (with active ingredients) significantly enhanced radical scavenging activity over the product bases (products without active ingredients) at 5000 μg/mL, with percentage improvement as follows: serum 53.48 ± 1.50%, moisturizer 39.5 ± 2.18%, and facial wash 7.23 ± 2.20%. These findings suggest that facial wash, moisturizer, and serum containing the combination of Andrographis paniculata extract, Syzygium aromaticum oil, and Pogostemon cablin oil have the potential to become effective anti-aging treatments in the cosmetic market due to their antioxidant properties. Further studies are needed to assess their mechanism of action as anti-aging cosmetics. [ABSTRACT FROM AUTHOR]

The variety selection and intercropping system are closely related to canopy architecture which determines the capability of maize crops to intercept and absorb the intensity of solar radiation. The research to increase radiation use efficiency (RUE) of maize based on varietal selection and intercropping with mungbean related to canopy characteristics. The experiment was conducted during the rainy season, from September 2016 to January 2017, in Gowa Regency, South Sulawesi. A factorial randomized block experiment with three replicates was designed the fasilitate the combination of two factor. The first factor was three maize varieties, i.e. Bisi 18, Lamuru, and local variety and the second factors dealt with intercropping systems, i.e. intercropping of maize varity with one, two, three, and four lines of mungbean, and maize monoculture. The results showed that there were interactions between varieties and intercropping to RUE of maize. The RUE of all maize varieties intercropped with mungbean was higher compared to the maize monoculture. The RUE of Bisi 18 intercropped with mungbean was higher than Lamuru and local varieties with the values of 9.53%, 8.80%, and 6.43% respectively. Bisi 18 that has vertical leaf character were more efficient in utilizing solar radiation when intercropped with denser mungbean populations. [ABSTRACT FROM AUTHOR]

Copyright of Revista Chapingo Serie Horticultura is the property of Universidad Autonoma Chapingo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)