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| dc.contributor.author | Beamlaku Alemayehu | |
| dc.date.accessioned | 2022-02-03T08:45:29Z | |
| dc.date.available | 2022-02-03T08:45:29Z | |
| dc.date.issued | 2022-02-03 | |
| dc.identifier.uri | http://ir.bdu.edu.et/handle/123456789/12999 | |
| dc.description.abstract | Currently, the government of Ethiopia supplying fertilizers in the form of N, P, S, Zn & B. However, many researchers argue that N and P are the only yield-limiting nutrients. The study was conducted to identify yield-limiting nutrients of tef and to assess the inherent nutrient supplying status of Vertisols. The experiments were carried out during the 2020/2021cropping season under screen house, on-station and on-farm conditions at Yilmana Densa district of Amhara region, Ethiopia. Tef (Quncho variety) was used as a test crop. This trial contained ten treatments, control, PKSZnB, NKSZnB, NPSZnB, NPKZnB, NPKSB, NPKSZn, NPKSZnB, NP and NPS. Each pot with a depth of 18.5 cm and a surface area of 0.033 m2 was filled with 5 kg of soil. The pot trial was laid out in a completely randomized design (CRD) while the field trials laid out in a completely randomized block design (RCBD) with three replications. Yield-limiting nutrients were identified through nutrient omission trial. The data were analyzed using SAS version 9.0 and treatment means separated by using LSD at P ≤ 0.05.The result revealed omission of N and P highly significantly (P˂ 0.01) reduced grain yield, straw yield and yield components of tef in all experiments. However, the absence of potassium, sulfur, zinc, and boron did not show significant (P ˂ 0.05) yield reduction. Before planting soil analysis of TN (0.126% on-station and 0.125% on-farm) was low. The Av.P (3.89 mg kg-1on-station and 4.24 mg kg-1 on-farm) content of the soil was also very low. The lowest grain and biomass yields (2.2 and 7.9 g/pot under screenhouse), (177.2 and 533.3 kg ha-1 on-station) and (24.9 and 533.3kg ha-1 on-farm) respectively, were recorded from omission of N. However, omission of P resulted in grain and biomass yields (2.4 and 8.1 g/pot under screenhouse), (191.1 and 1066.7kg ha-1 onstation) and (106.4 and 533.3 kg ha-1 on-farm) respectively. Application of K, S, Zn and B did not have any effect on tef yield over the applied NP. Based on these results N and P were identified as the most yield-limiting nutrients of tef. Application of N and P containing fertilizer is better for tef production. | en_US |
| dc.language.iso | en | en_US |
| dc.subject | Soil Conservation and Watershed Management | en_US |
| dc.title | DETERMINATION OF NUTRIENTS LIMITING TEF [Eragrostis tef (Zucc.) Trotter] YIELD ON VERTISOLS IN YILMANA DENSA, NORTHWESTERN ETHIOPIA | en_US |
| dc.type | Thesis | en_US |
