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Mustard is locally popular with the name of tora/rayo/raichi is getting priority among the farmers due to its dual advantage of leafy vegetables and oilseed. With the objective identification of the potential mustard genotypes from the available gene pools, a coordinated Varietal Trial (CVT) was conducted in Oilseed Research Program, Nawalpur. A total of 14 mustard genotypes were evaluated in a randomized complete block design (RCBD) with three replications. The plot size was 10 m2 with five rows of 3-meter length maintaining inter-row of 40 cm and intra-row spacing of 15 cm. While depicting the yield, ICJ01-11 was considered the highest yielding genotype with the average yield of 521 kg/ha followed by ICJ9708 with the yield of 467 kg/ha and RH30 with the yield of 450 kg/ha. Due to the pivotal role of mustard as an oilseed production, it is indispensable to evaluate the available gene pool of local landrace, varieties and foreign genotypes of mustard to find out the highest yielding. So these promising genotypes can be used the in future to develop varieties of genotypes with high yield.

An experiment was conducted in factorial design with three replications in Nawalpur, Sarlahi, Nepal in 2018 and 2019 to investigate the impact of calcium and phosphorous application on yield and yield components of groundnut (Arachis hypogaea L.). Baidehi variety of groundnut was used. Calcium concentrations in three levels (0, 110, and 165 kg ha-1 from Gypsum) and phosphorous rates in three levels (0, 25, and 50 kg ha-1 from SSP) were used in this study. The application of calcium had a major impact on pod production, quantity of filled pods, and hundred seed weight, with 165 kg ha-1 calcium from gypsum performing significantly better than the others. The highest pod yield (2006 and 2477 kg ha-1) was obtained from calcium 165 kg ha-1 in 2018 and 2019 respectively. Calcium application (165 kg ha-1) increased the mean pod yield by 24% compared to the control. Control plots resulted in more than 13% empty pods (pops) compared to when applied with 165 kg Ca ha-1. Phosphorus was rich in the inherent soil leading to no significant effect on the yield components. According to the findings of this research, efficient fertilizer application, especially calcium and phosphorus, is critical for groundnut nutrition and pod filling.

In Recent years, cultivation of Mustard (Brassica juncea) is growing popularity but there is lack of suitable high yielding and oil contenting variety in Nepal. With Objective of identifying and releasing of high yielding variety, evaluation of exotic genotypes were done in the research field and farmers field. Coordinated Varietal Trial (CVT) was conducted for three years in three different location (Nawalpur, parwanipur and Khajura) in RCBD design. 4 Elite genotypes were selected and further evaluate under Coordinated Farmer Field Trial (CFFT) for 5 years where each farmer was considered as Replication. Nutrients Analysis was done to find out the moisture, oil and protein content of selected elite genotypes. In combined ANNOVA of CVT, ICJ 9704 was found to be high yielding genotypes. Similarly, In CFFT, genotypes was significantly for yield where ICJ 9704 produced highest yield (906.75 kg/ha) where as Divya, Pusa Jagarnath and Krishna produced yield of 798.12 kg/ha, 790 kg/ha and 767.392 kg/ha. ICJ 9704 has high oil content 37.3 % with 36.3 % protein content. In 2017, ICJ 9704 was release as Morang rayo and was recommended to grow in the terai and inner terai. Hope this variety will be popular among mustard growing farmer and will help to meet the national demand of the Nation. Int. J. Appl. Sci. Biotechnol. Vol 8(4): 454-456

An experiment was conducted in factorial design with three replications in Nawalpur, Sarlahi, Nepal in 2018 and 2019 to investigate the impact of calcium and phosphorous application on yield and yield components of groundnut (Arachis hypogaea L.). Baidehi variety of groundnut was used. Calcium concentrations in three levels (0, 110, and 165 kg ha-1from Gypsum) and phosphorous rates in three levels (0, 25, and 50 kg ha-1from SSP) were used in this study. The application of calcium had a major impact on pod production, quantity of filled pods, and hundred seed weight, with 165 kg ha-1calcium from gypsum performing significantly better than the others. The highest pod yield (2006 and 2477 kg ha-1) was obtained from calcium 165 kg ha-1in 2018 and 2019 respectively. Calcium application (165 kg ha-1) increased the mean pod yield by 24% compared to the control. Control plots resulted in more than 13% empty pods (pops) compared to when applied with 165 kg Ca ha-1. Phosphorus was rich in the inherent soil leading to no significant effect on the yield components. According to the findings of this research, efficient fertilizer application, especially calcium and phosphorus, is critical for groundnut nutrition and pod filling. &nbsp

A field experiment was conducted at Chitwan, Nepal to evaluate the effects of manure and irrigation application on soil nutrients content, water use efficiency and maize productivity. The experiment was laid out in a factorial complete randomized block design with three replications. The treatments were consisted of two manure levels: no manure and manure with fertilizer based on 120 kg ha-1 nitrogen recommended. Similarly, another factor was irrigation water application with five levels which were control (no irrigation) and irrigation applications of 300, 600, 900 and 1200 mm during growing period. The manure application significantly affected the total nitrogen (0.13%) and available phosphorus (37.5 kg ha-1) content in the soil. Interestingly, different irrigation treatments enhanced soil nutrient content differently except soil nitrogen. Similarly, the highest grain yield was observed on 1200 mm irrigation which corresponded to 169% increment over control irrigation treatment but not significant with 600 and 900mm irrigation. The 1200 mm irrigation showed the lowest irrigation water use efficiency (IWUE) (5.96 kg ha-1 mm-1), while 300 mm irrigation showed maximum (18.37 kg ha-1 mm-1) followed by 600 mm irrigation (7.04 kg ha-1 mm-1) based on grain yield. In conclusion, it seems that 600 mm irrigation treatments are quite suitable for the maize production in spring season with benefits of increasing IWUE and saving water around 50% of water which will help in growing more areas and in managing the limited water resources in Chitwan, Nepal.

Improved irrigation use efficiency is an important tool for intensifying and diversifying agriculture in Nepal, resulting in higher economic yield from irrigated farmlands with a minimum input of water. Research was conducted to evaluate the effect of irrigation method (furrow vs. drip) on the productivity of nutritious fodder species during off-monsoon dry periods in different elevation zones of central Nepal. A split-block factorial design was used. The factors considered were treatment location, fodder crop, and irrigation method. Commonly used local agronomical practices were followed in all respects except irrigation method. Results revealed that location effect was significant (p < 0.01) with highest fodder productivity seen for the middle elevation site, Syangja. Species effects were also significant, with teosinte (Euchlaena mexicana) having higher yield than cowpea (Vigna unguiculata). Irrigation method impacted green biomass yield (higher with furrow irrigation) but both methods yielded similar dry biomass, while water use was 73% less under drip irrigation. Our findings indicated that the controlled application of water through drip irrigation is able to produce acceptable yields of nutritionally dense fodder species during dry seasons, leading to more effective utilization and resource conservation of available land, fertilizer and water. Higher productivity of these nutritional fodders resulted in higher milk productivity for livestock smallholders. The ability to grow fodder crops year-round in lowland and hill regions of Nepal with limited water storages using low-cost, water-efficient drip irrigation may greatly increase livestock productivity and, hence, the economic security of smallholder farmers.