Aspergillus infection and subsequent contamination of groundnut with Aflatoxin is a major limitation in groundnut production in the study area (Tanqua Abergel,Tigray). This study was executed to evaluate the effect of fertilizer (DAP and gypsum application), tied ridging and supplementary irrigation on Aspergillus infection of groundnut. The experiment was laid out in Randomized Complete Block Design with three replications in two sites. DAP as a source of P, and gypsum as source of Ca, were applied at planting and pod setting stages, respectively. While Tied ridging and supplementary irrigation were applied at early flowering and during cessation of rainfall, respectively. Data on incidence and severity levels of Aspergillus infection on sampled kernels were recorded. The analysis of variance indicated that the integrated agronomic management practices showed a significant reduction of Aspergillus flavus infection on groundnut at both experimental sites. The lowest (3%) Aspergillus flavus infection was recorded in management practices where Supplementary irrigation+tied ridging were practiced at Hadinet. The highest Aspergillus flavus infection (17.3%) was recorded in the control. In Lemlem experimental site the lowest Aspergillus flavus infection (4.3%) was recorded in gypsum+supplementary irrigation combination, while highest (19.3%) Aspergillus flavus infection was recorded in control. Application of integrated agronomic management practices did not showed a significant reduction of Aspergillus niger infection at both experimental sites.

Benishangul Gumuze is one of the most important potential rice producing areas in Ethiopia. Six improved lowland ecosystem rice varieties were evaluated with the objective of selecting adapted lowland ecosystem rice varieties for Assosa condition. The trial was conducted at Assosa Agricultural Research Center during 2017/18 and 2018/19 cropping season using Randomized Complete Block Design at low land ecosystem. The size of the plot was 1.5m x 5m with gap of 0.5m between plot and 1.5m between blocks. Data was collected from nine agronomic parameters such as days to 50% heading days to 85% physiological maturity, plant height, panicle length number of fertile tillers, number of non-fertile tiller, number of filled grain per panicle, number of unfilled grain per panicle, and grain yield (kg/ha) and ranged 93 to 110,148 to 157, 80 to 98, 19 to 21, 4.8 to 6.1, 0.43 to 0.78, 82 to109, 10 to 29, 2001.4 to 2908.6 respectively. The mean combined analysis of two years showed that some agronomic parameters were statically highly significant different (p<0.05) while other parameters showed non-significant different. The mean square of over the year revealed that the yield (kg/ha) was highly significant different and other agronomic parameters showed the same result which have high contribution in yield increment of rice production. Among six tested rice varieties, Edeget and Demoze scored the highest grain yield (2908.6 kg/ha) and (2496.8 kg/ha) respectively. Therefore, based on objectively measured agronomic traits Edeget and Demoze were best adapted to low land rain fed rice ecosystem of Assosa until superior varieties will be investigated.

Cereal is very important crop for human consumption in the world. Among the cereal crops, tef is one of the most popular and staple crop that originated and highly diversified in Ethiopia. The demand is very high in the country, and it needs production expansion to the area where tef is not primary grown. The current study was consists of forty-nine tef genotypes were conducted by using simple lattice design at Assosa, Western Ethiopia for two consecutive cropping seasons (2016 and 2017) to evaluate the performance of tef genotypes for the non-traditional tef growing area particularly Assosa, Ethiopia. The analysis of variance indicated that there was high (p ≤ 0.01) significant difference among tested tef genotypes for days to heading, plant height, panicle length, culm length, grain yield, and harvest index. From the mean performance of genotypes, the maximum grain yield of 14.70 kg ha-1 , 14.33 kg ha-1 , 13.49 kg ha-1 , and 13.31 kg ha-1 were obtained from G-12, G-1, G-37 and G-19. These genotypes were showed superior performance in grain yield and they could be recommended for further evaluating under the next breeding phase of variety trail.

Cereal is very important crop for human consumption in the world. Among the cereal crops, tef is one of the most popular and staple crop that originated and highly diversified in Ethiopia. The demand is very high in the country and it needs production expansion to the area where tef is not primary grown. The current study was consists of forty-nine tef genotypes were conducted by using simple lattice design at Assosa, Western Ethiopia for two consecutive cropping seasons (2016 and 2017) to evaluate the performance of tef genotypes for the non-traditional tef growing area particularly Assosa, Ethiopia. The analysis of variance indicated that there was high (p#0.01) significant difference among tested tef genotypes for days to heading, plant height, panicle length, culm length, grain yield and harvest index. From the mean performance of genotypes, the maximum grain yield of 14.70, 14.33, 13.49 and 13.31 kgha-1 were obtained from G-12, G-1, G-37 and G-19. These genotypes were showed superior performance in grain yield and they could be recommended for further evaluating under the next breeding phase of variety trail.