Soil Chemical Properties Under Conservation Agriculture and Cereal-Based Cropping System in Eastern Tarai of Nepal

Field experiments were conducted for four years (2014-2017) at five locations namely Salbani, Bhokraha, Simariya, Bhaluwa and Kaptanganj of Sunsari district to assess the changes in soil chemical properties under conservation agriculture (CA)-based practices in two cropping systems namely rice-kidney bean-maize at Salbani and rice-wheat at rest of the locations. In rice-wheat cropping system, there were four treatments: (1) conventional tillage (CT) for rice transplantation and subsequent wheat sowing, (2) conventional tillage rice transplantation followed by zero tillage (ZT) wheat, (3) unpuddled rice transplantation followed by zero tillage wheat, (4) zero tillage in both rice and wheat. Similarly, in rice-kidney bean-maize cropping system, there were four treatments; (1) conventional tillage for rice transplantation and sowing of both kidney bean and maize, (2) conventional tillage rice transplantation followed by zero tillage in both kidney bean and maize, (3) unpuddled rice transplantation followed by zero tillage in both kidney bean and maize, (4) zero tillage in all three crops. Soil samples were taken at initial and every year after rice harvest.The soil samples were analyzed for total nitrogen, available phosphorus, available potassium, pH and soil organic matter.Total nitrogen (N) showed a slightly decreasing trend in the first three years and showed a slight increase at the end of experiment under ZT in all locations. The total N under ZT changed from 0.12 to 0.13%, 0.05 to 0.06%, 0.10 to 0.12%, 0.11 to 0.08% and 0.09 to 0.13% in Salbani, Bhokraha, Simariya, Bhaluwa and Kaptanganj, respectively.  All locations showed the positive values of available potassium; Salbani  revealing considerable change of 64.3 to 78.5 mg/kg in CT while 68.4 to 73.3 mg/kg in ZT condition. The treatment where rice was transplanted in unpuddled condition and zero tilled to wheat, had a mean value of available phosphorus and potassium as 87.3 and 81.9 mg/kg respectively. Soil pH ranged from 4.8 to 7.1 in CT while it was 5.2 to 6.8 in ZT across the locations. The change in soil organic matter in CT of all locations except Salbani was narrower as compared to ZT

Performance Evaluation of Commercial Maize Hybrids Across Diverse Terai Environments During the Winter Season in Nepal

The hybrid maize cultivars of multinational seed companies are gradually being popular among the farmers in Nepal. This paper reports on research finding of 117 maize hybrids of 20 seed companies assessed for grain yield and other traits at three sites in winter season of 2011 and 2012. The objective of the study was to identify superior maize hybrids suitable for winter time planting in eastern, central and inner Terai of Nepal. Across site analysis of variance revealed that highly significant effect of genotype and genotype × environment interaction (GEI) on grain yield of commercial hybrids. Overall, 47 genotypes of 16 seed companies identified as high yielding and stable based on superiority measures. The statistical analysis ranked topmost three genotypes among tested hybrids as P3856 (10515 kg ha-1), Bisco prince (8763 kg ha-1) as well as Shaktiman (8654 kg ha-1) in the first year; and 3022 (8378 kg ha-1), Kirtiman manik (8323 kg ha-1) as well as Top class (7996 kg ha-1) in the second year. It can be concluded that stable and good performing hybrids identified as potential commercial hybrids for general cultivation on similar environments in Nepal

Maize Response to TIME of Nitrogen Application and Planting Seasons

Nitrogen (N) response by maize differs due to growing seasons, growth stages, duration and growing domain as N losses is higher due to leaching as well as volatilization. Objective of this study was to know the response of split applications of N and growing seasons on maize under Chitwan environments. Field experiments were conducted for two consecutive years at the research field of NMRP Rampur during the winter, spring, and summer seasons of 2012/013 and 2013/014. Experiments were laid out in factorial randomized complete block design with four replications for all the seasons. Early maturing maize genotype Arun-1 EV was used for the experiments. Five splits of recommended dose of N were tested. Grain yield, days to flowering, plant height, ear height, kernel rows per ear, no. of kernels per row, ear length and thousand grain weight significantly differed due to growing seasons and split applications of N. Significantly higher grain yield (3911 kg ha-1) was obtained with the application of 30 kg N ha-1 each at 30, 45, 60, and 75 days after sowing as compared to control (2801 kg ha-1). Regarding the growing seasons, highest grain yield was obtained in winter (4393 kg ha-1) followed by spring (3791 kg ha-1) and summer (2468 kg ha-1) season, respectively. Results of these studies revealed that four splits of N viz. application of 30 kg N each at 30, 45, 60, and 75 days after sowing respectively, would be more economical to minimize N losses from the soil and efficient use of N at critical growth and development stages of maize

Performance evaluation of maize in Jumla district of Nepal: from yielding perspective

The performance evaluation of maize genotypes  at a specific growing region is a key to crop improvement. The objectives of this study were to evaluate grain yield of maize genotypes at Bijayanagar (Mahatgaun VDC) and Tallo Lorpa (Dillichaur VDC), Jumla District of Nepal during spring seasons of 2012 and 2013. The maize genotypes were significant (P< 0.05) for grain yield, days to tasseling and silking and  disease scoring where as anthesis-silking interval, plant height and ear height were non significant. The pooled analysis of the results showed that the highest grain yield was produced by Ganesh-1 (4830 kg/ha) followed by KKT-POP (4408 kg/ha), KKT-14 (3952 kg/ha) and MGU-08 (3913 kg/ha, respectively. From this study, Ganesh-1, KKT-POP, KKT-14 and MGU-08 could be preferable choice for cultivation in Jumla district of Nepal

Predatory journals as threats to the academic publishing: a review

Academic publishing has been increasing greatly with the spread of open access journals and the shift to online publishing. However, authors must be aware of predatory journals and publishers while submitting their academic works for publication. Publishing in predatory journals is just a waste of efforts, money, and time as it does not add any scientific merits to the authors. The practice of predatory publishing can also damage the reputation of institutions and funding agencies. Therefore, there is an urgent need for awareness among researchers regarding predatory publishing. Local, national and international regulatory bodies should take stern actions against predatory publications while granting research funds and evaluating the researchers’ performance for job promotion and academic degrees

Asian elephants and their status in Nepal: a review

Wild Asian elephants (Elephas maximus) are one of the most endangered wildlife species in Nepal. Currently, there are approximately 200 to 250 wild elephants counted in Nepal. Of  them, 15-20 are in Jhapa district, 17 are in KoshiTappu Wildlife Reserve, eight in Sindhuli, and 45-50 in Parsa National Park andChitwan National Park. More  than 100 elephants are in Bardiya National Parks and adjoining municipalities, and 25-30 are in Suklaphanta National Park and adjoining municipalities.Elephant conservation is challenged by habitat fragmentation, obstruction of migratory routes and human-elephant conflict. The governments of Nepal, law enforcement, NGOs, and local communities have made various initiatives to conserve elephants. In the paper, we have outlined the current status of the elephant population, and its conservative efforts. This study may be a useful tool for the scientific communities and ecologists to protect elephants from extinction

Fruit Characterization of Different Avocado (Persea Americana Mill.) Genotypes in Eastern Mid-hills of Nepal

The total of thirteen different avocado (Persea americana Mill.) genotypes were collected for evaluating the fruit characteristics in the laboratory of Agricultural Research Station, Pakhribas during November 2017. The fully matured fruits from the farmer's field at Patle, Dhankuta were collected. The criteria for selecting the genotypes were fruit weight, fruit length, fruit diameter, seed weight, pulp weight, pulp to fruit ratio and the seed weight percentage. The result suggests the potentiality of the genotypes PAKAV002 and PAKAV010 in most of the evaluated characters as compared to the tested genotypes. The genotypes PAKAV008 and PAKAV007 were disliked as they have 32.59% and 28.39% of seed weight to the total fruit weight. The genotypes PAKAV002 and PAKAV010 had the average fruit weight ranging (307.1 g and 346.8 g), maximum of pulp to fruit ratio 62.34% and 56.97%. Similarly, genotypes PAKAV010 (11.425%), PAKAV013 (11.96%) and PAKAV002 (14.47%) had low seed weight to the total fruit weight which is regarded important factor for avocado selection and evaluation. This result shows that the genotypes PAKAV002 and PAKAV010 should be further evaluated for fruit characteristics and the quality

Writing a Research Paper for Journal of Nepal Agricultural Research Council

Agricultural research findings are required to reach soon to the farmers, extensionists, media, researchers, policy makers, businessperson, students, teachers and so many other stakeholders. Among different types of publications, research paper is generally published in journal considered as standard type of publication in term of quality and recognition. Most of the journals follow similar pattern and framework; however, the style, format and process may be different with each other. A research (scientific) paper is a written describing original research result using standard methods and materials. The major sections in a journal paper are abstract, introduction, materials and methods, results, discussion, conclusion, and references. Accordingly Journal of Nepal Agricultural Research Council has its own style and format. Author needs to follow guidelines strictly on the use of punctuation marks such as comma (,), period (.), space, justification etc; otherwise submitted manuscripts could be immediately return to author without considering in review process. In general, we received manuscripts with many errors on citation and references, poor elaboration of results of experiments, weak discussion, missing to acknowledge funding agencies, submitting non-editable figures, very few numbers of citations of Nepalese researchers, statements not in logical order, etc. In general, the scientific papers should be written in simple way with new but sufficient justification backed up by data in the form of tables, graphs, flow diagrams etc so that readers can understand easily with high readability. The submitted manuscript in the journal office are sent to two to three reviewers for specific recommendation on the originality of the work, appropriateness of the approach and experimental design, adequacy of experimental techniques, soundness of conclusions and interpretations, relevance of discussion and importance of the research. The language clarity and organization of the article are also asked with the reviewers. In response to reviewer's comments all authors are expected to reply each and every comments and suggestions of reviewers, if such comments and suggestion are not acceptable, the author/s can argue for their points, if genuine. Here in this paper we described detail contents of each section along with style and format for a research paper writing targeted to Journal of Nepal Agricultural Research Council