The experiment was conducted from 2009-2011 cropping seasons. Six mung bean genotypes viz. SML-668, Black bean, Bored, Local Gofa, SML-32 and Local 2-Sheraro were evaluated to early maturing and high yielding genotypes and the design was RCBD with three replications. The combined analysis of variance reviled that there was highly significant variation (p < 0.01) of grain yield among the genotypes, environments and genotype by environment interaction. The genotypic, environmental and the genotype x environment interaction (GIE) accounted about 30.47%, 45.01% and 11.59% of the total variation. The average grain yield of the genotypes was 2008.17 kg/ha. The highest and the lowest mean yield was obtained from SML-668 (2536.47 kg/ha) and SML-32 (1773.59 kg/ha) respectively. The AMMI bi-plot also depicted that, SML-668 and SML-32 were the high yielding and low yielding genotype, respectively. Similar to the AMMI bi-plot, the GGE bi-plot also confirmed that SML-668 was the winning genotype in most of the environments; whereas, SML-32 and local 2-sheraro, were the low yielding genotypes in some or all of the environments. E1, E2 and E6 are discriminating environments and declared as the most representative than E3, E4 and E5. Generally, SML-668 was the ideal genotype with higher mean yield and relatively good stability; Local-2 Sheraro was the moderately good yielding genotype and the most unstable genotype; Whereas, SML-32 was the poorly yielding and unstable genotype.

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A field experiment was conducted at Humera Agricultural Research Center experimental site for two consecutive years (2011/2012 and 2012/2013 cropping season) under irrigation condition to evaluate performance of hot pepper varieties for green pod yield and yield components in western Tigray, Northern Ethiopia. A total of six hot pepper varieties were used as test genotypes. Least Significant Difference (LSD) and Pearson correlation were used to compare treatment means and association of characters. Combined analysis of variance explained that all the traits except days to 50% flowering and days to 50% fruiting showed highly significant difference (p<0.01) among the varieties. Among the six varieties the highest marketable green pod yield was found from Jeju (19.47 t ha-1) which is statistically at par with marecofana (19.35 t ha-1). Marecofana scored the largest green pod weight (7.3 gram) followed by Jeju (6.2 g). Correlation analysis showed that marketable green pod yield per hectare had highly significant positive association with fruit yield per plant (r=0.705), single fruit weight (r=0.668) and fruit diameter (r=0.675) indicating that selection based on these trait improves marketable green pod yield of hot pepper in the specific agroecology.

North western and Western zone of Tigray are the most suitable for agricultural mechanization and investment for different crops such as sesame, cotton, sorghum, Mungbean and other. Now days different investments and agro-industries are emerging to consume and process the agricultural products and this is a good opportunity for the crop producers. This new emerging industrial parks helps to produce quality products, value-add process, to get reasonable price, to introduce modern agriculture and agricultural mechanization. The Humera type sesame is one of the branded white seeded sesame in the world, meets the world criteria; it has high demand in the world market for different purposes. In northern Ethiopia, sesame is producing purely organic and it is very essential for different international and domestic purposes. Humera agricultural research Center released different crop varieties under wide commercial production in different agro-ecologies of Ethiopia such as sesame; Setit-1(2011), Setit-2 (2016), Setit-3 (2017), Humera-1 (2011) and Mungbean (Arkebe, 2014), Okra (Bamya-Humera in2016), Tomato (Tekeze-1, 2016) for low land areas of northern Ethiopia and other similar agro-ecology of the country. Those released crop varieties are under wide commercial production and small-scale farmers in northern Ethiopia and producing for export, agro-industrial purposes and local consumption.

Onion (Allium cepa L.) is an important underground vegetable bulb crop of tropical and subtropical part of the world. The experiment was carried out in randomized complete block design (RCBD) with three replications and conducted during 2016 to 2018 under irrigation condition at three testing sites. The experiment was designed to select high yielding and good shelf life varieties with the following specific objectives (1) to evaluate and select high yielding onion varieties, (2) to select the adaptable onion varieties and (3) to evaluate and select onion varieties having long shelf life. The study result showed that different variations were observed among the varieties; (29.82%) by environments, (21.94%) Genotype x Environment Interaction and genotypes (6.6. The high environmental variations and differential response of genotypes to the variable environments leading to inconsistency ranking of genotypes across years and locations. The highest yield was obtained  from Bombey red (440.3 kgha-1), followed by Nafis(395 kgha-1), Shendi(391 kgha-1), Nasik red(373 kgha-1) and Adama red(387 kgha-1) respectively. The highest %yield loss recorded from Adama red (28.30%) followed by Nafis (23.23%), Nasik red (22.90) Bombey red (22.48%) and Shendi (5.67%) respectively. Even though, the stability ranking of the varieties were varied among the stability parameters.  Nafis and Bombey red were found the most stable. While Nasik red, Adama red and Shendi unstable across years and locations.  From each of the onion varieties 5 kg was stored for three months and shelf life data recorded and analyzed using R software. Based on the study Shendi can store more than six months without any problem will be recommended and promoted for commercial production. Therefore, the stable varieties recommended and promoted for wider areas.