Effect of different nitrogen levels on yield and yield attributes of different rice varieties in DDSR condition at Kanchanpur, Nepal

An experiment on the effect of different nitrogen levels on yield and yield attributes of different rice varieties was conducted in Kanchanpur, Nepal, from March 2021 to July 2021. The experiment was laid in randomized complete block design with two factors: nitrogen levels and rice varieties, each factor having three levels (Nitrogen: 60kg/ha, 120kg/ha, and 180kg/ha and rice varieties: Hardinath 1, Hardianth 3 and Chaite 5) resulting in nine treatment combinations. Rice seeds were sown directly in experimental plots under the dry condition on March 24, 2021. The plant spacing was 20x20cm^2. Growth parameters, grain yield, and yield attributing traits of rice were recorded. The statistical results revealed significant differences between the treatments regarding agronomical parameters, yield attributing characters, and grain yield. The results indicated that the 180 kg/ha level of N application contributes to the higher plant height (74.502 cm), the number of tillers (1101.667), effective tillers (577.222), filled grain per panicle (116.490), panicle length (25.241 cm), grain yield (4.7 ton/ha) and straw yield (10.564 ton/ha). Among the varieties, Hardinath 3 produced significantly higher plant height (79.68 cm), panicle length (25.68cm), sterility percentage, and 1000 grain weight (24.60g) as compared to Hardinath 1 and Chapter 5, respectively. However, yield and yield attributing characters like grain yield, straw yield, effective tillers, and filled grains per panicle were significantly higher in Chaite 5. Therefore, a nitrogen level of 180 kg/ha and variety Chaite5 may be used for better productivity in Kanchanpur, Nepal

Effect of Rhizobium leguminosarum Inoculation and Mulching on Growth and Yield of Chinese Long Bean (Vigna unguiculata subsp. sesquipedalis)

An experiment was conducted to evaluate the influence of Rhizobium leguminosarum inoculation and mulching on the growth and yield of Chinese long bean (Vigna unguiculata subsp. sesquipedalis) in Palungtar, Nepal. A split-plot design was used for the experiment, which was replicated four times. Plastic, straw, and no-mulch conditions constituted the main plot factor, while seeds with or without Rhizobium inoculation constituted the sub-plot elements. Growth parameters and yield-related traits of Chinese long beans were recorded at 15-day intervals. Transparent plastic mulching resulted in earlier flowering (46 days), while seed inoculation with Rhizobium resulted in a higher mean number of nodules (106.92) than non-inoculated treatments, with transparent plastic mulching resulting in the highest mean number of nodules (108.21). At 60 days after showing (DAS), plant height was greater in the inoculated treatment (69.23 cm), while at 30 DAS, the non-inoculated treatment had a higher number of leaves (22.28 cm). Similarly, pod length (49.98 cm), pod yield per plant (348.01 g), and total yield per hectare (16.07 t/ha) were all significantly higher with both plastic mulch and seed inoculation with Rhizobium than with the other treatments alone. A positive correlation was observed between plant height (0.81), number of branches (0.44), number of leaves (0.81), number of nodules per plant (0.6), and pod yield. This supports the potential benefits of using seed inoculation with Rhizobium in combination with mulching to improve Chinese long bean growth and increase yield as demonstrated by the results of this study

Bark Extract of Lantana camara in 1M HCl as Green Corrosion Inhibitor for Mild Steel

Lantana camara, an invasive species that adversely affects habitant, bioregions and environment has been studied as corrosion inhibitor. Methanolic extract of barks of Lantana camara in 1 M hydrochloric acid was tested as corrosion inhibitor on mild steel using potentiodynamic polarization technique. The corrosion inhibition efficiency of extract varied with concentration of extract and immersion of time. The inhibition was found to increase with increase in concentration of the extract. The polarization behavior of mild steel revealed that maximum inhibition efficiency is 97.33 % and 89.93 % respectively in the 1000 and 200 ppm concentration of the inhibitor respectively. The results showed that the extract of the barks of Lantana camara served as a mixed type inhibitor

A review of passenger-oriented railway rescheduling approaches

Abstract Railway operations are highly susceptible to delays and disruptions caused by various factors, such as technical issues, operational inefficiencies, and unforeseen events. To counter these delays and ensure efficient railway operations during real-time management, several rescheduling approaches can be implemented. Among these approaches, passenger-oriented rescheduling considers train rescheduling while taking passenger data into account, as opposed to operation-oriented rescheduling. This paper provides an overview of the former group of approaches. Particular focus is put on different ways passenger data is exploited to optimize rescheduling and on the measures, the approaches can decide on. The rescheduling measures typically considered vary from decisions on maintaining transfers, canceling trains, adding emergency trains, changing routes and orders of trains, skipping or adding stops at stations, short-turning trains, applying speed control, and modifying rolling stock compositions. In this regard, the paper presents a comprehensive analysis of real-time rescheduling approaches adopted in both the conventional railway and urban rail transit and points out possible directions for further research in the field

A Biopesticides and their impact on brinjal Jassid (Amrasca biguttula biguttula Ishida)

Brinjal (Solanum melongena) is a precious and nourishing vegetable grown worldwide in tropical and subtropical climates. Jassid (Amrasca biguttula biguttulaI.) (Hemiptera: Cicadellidae),of which nymphs and adults suck the cell sap from the underside of the brinjal leaves resulting in curling and affecting the photosynthesis process. The present study aimed to study the effectiveness of biopesticides and their impact on jassid and its natural enemy in different seasons. The field experiment arranged in randomized block design includes six biorational insecticides such has (T1)-Spinosad 45 % SC @ 0.4ml/l, (T2)-Neem Seed Kernel Extract(NSKE) 1% @ 2ml/l, (T3)-Beauveria bassiana 1x 108 @ conidia/ml @ 10ml/l, (T4)-Metarhizium anisopliae1x 108 conidia/ml @ 10ml/l, (T5)-Verticillium lecanii 1x108 conidia/ml @ 10ml/land (T6)-Untreated plots replicated in four times. It is resulted that all the biorational pesticides performed significantly better than the control. However, among the treatments, application of (T3)-Beauveria bassiana 1x108 conidia/ml @ 10 ml/l and (T2)-Neem Seed Kernel Extract (NSKE) 1% @ 2 ml/l  was found to have significantly better results against jassid,during Rabi(2021) and Kharif season (2022) respectively. For predatory coccinellids,(T2) - Neem Seed Kernel Extract (NSKE) 1% @ 2 ml/l and(T1)-Spinosad 45 % SC @ 0.4ml/l were found to be better compared to other treatments in Rabi and Kharif season. This research will help to understand the importance of biopesticides with eco-friendly approaches to manage jassid.