Research Article
Evaluation of NUE and Rice (Oryza sativa L.) Performance Through Application of Urea Stable Fertilizer in Ethiopia
Demsew Bekele*
,
Abebe Getu,
Wubayehu Gebremedihin,
Helen Asaminew,
Belachew Muche
Issue:
Volume 12, Issue 5, October 2024
Pages:
109-116
Received:
14 October 2024
Accepted:
5 November 2024
Published:
7 December 2024
Abstract: An experiment based on randomized complete block design was conducted at Fogera and Libokemkem districts from 2017-2019 growing season. Nitrogen is the most yield liming nutrient that can be highly soluble and lost through leaching, volatilization and denitrification. The experiment was conducted to determine the effects of urea stable and convectional urea on rice performance and productivity. The experiment was laid out in randomized complete block design with three replications. The treatments were different rate of urea stable and convectional urea applied at planting and in split: (Control, 69 kg N ha-1 from urea stable applied once at planting, 69 kg N ha-1 from urea stable in split application, 34.5 kg N ha-1 from urea stable in split application and 34.5 kg N ha-1 from urea stable in once applied, 103.5 kg N ha-1 from urea stable applied once at planting, 103.5 kg N ha-1 from urea in split application, 69 kg N ha-1 from conventional urea in split application, 103.5 kg N ha-1 from conventional urea in split application). The applications of urea stable and conventional urea were significantly improved growth yield and yield components of rice as compared to control. Mean grain yield and biomass yield of rice was significantly affected by nitrogen rate and increased with increasing of nitrogen rate applied from urea stable and conventional urea. Moreover, the highest grain and biomass yield 4.8 t and 10.6 t was recorded from application of the recommended N in urea stable form once at planting in fogera district. Whereas the minimum grain (1.9 t/ha) and biomass yield (4.7 t/ha) was recorded from the negative control. At Libokemkem district the highest grain and biomass yield 3.9 tones and 9.3 t/ha was recorded respectively. But statistically similar from application of 103.5 kg N ha-1 applied in split in the form of conventional urea (+ve control). Therefore, there was no evidence in our research that supports the advantage of urea stable over the conventional urea. Hence it is concluded that the application N fertilizers sources from both of urea and urea-stable are equal result obtained in improving of rice productivity and nitrogen use efficiency.
Abstract: An experiment based on randomized complete block design was conducted at Fogera and Libokemkem districts from 2017-2019 growing season. Nitrogen is the most yield liming nutrient that can be highly soluble and lost through leaching, volatilization and denitrification. The experiment was conducted to determine the effects of urea stable and convecti...
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Research Article
Evaluation of Micro-dosing Lime Application on Selected Soil Chemical Properties and Barley Crop Performance at Gedeo Zone, Southern Ethiopia
Issue:
Volume 12, Issue 5, October 2024
Pages:
117-122
Received:
19 November 2024
Accepted:
2 December 2024
Published:
23 December 2024
DOI:
10.11648/j.ajche.20241205.12
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Abstract: Liming acidic soil on smallholder farms is one of the major challenges to enhance crop yields in Ethiopian highlands. To address the problem associated with the high cost of liming, a precision technique referred to as lime micro-dosing, which involves application in small and affordable quantities of lime was evaluated on acid soil of the central highlands of Ethiopia from 2019/20 to 2020/21. The objective was to evaluate the effects of lime micro-dosing on selected soil physicochemical properties and yield and yield components of barley on farmers’ field in suko and sika districts. The treatments consisted of 5 lime rates of (T1) 0%, (T2) 6.25%, (T3) 12.5%, (T4) 25%, and (T5) 33.3% of the recommended lime rate. The experiment was laid out in randomized complete block design (RCBD) with 3 replications. The result showed that application of lime significantly (P<0.01) affected selected soil chemical properties and yield and yield components of barley. Soil pH was significantly increased from 5.0 to 5.8 and available P from 9.0 to 14.53 mg kg-1. Exchangeable acidity decreased from 1.5 to 0.90 Cmol (+) kg-1 due to lime application. Significant higher grain yield of barley was obtained from application of 25 and 33.3 % of recommended lime. Grain yield was increased by 100.5 and 110.2 % through application of 25 and 33.3 % of the LR of soils. Thus, application of 25 and 33.3 % of the LRs acid soils on spot at planting was found to be agronomically efficient and economically viable management option for barley production in the central highlands of Ethiopia.
Abstract: Liming acidic soil on smallholder farms is one of the major challenges to enhance crop yields in Ethiopian highlands. To address the problem associated with the high cost of liming, a precision technique referred to as lime micro-dosing, which involves application in small and affordable quantities of lime was evaluated on acid soil of the central ...
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