Evaluation of Different Indices of Sulfur Availability in Soils for Wheat (Triticum aestivum L.) Production in Ethiopia –II

Menna, Assefa; Amuri, Nyambilila; Mamo, Tekalign; Semoka, J. M. R.

doi:10.9734/ijpss/2015/20513

Cited by 5 publications

(9 citation statements)

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“…In line with this, [12] made reviews on a wide range of indices and concluded that, plant analysis was better than soil-testing for predicting the need for S application. In accordance, [13], evaluated organic carbon (OC), SO 4 -S in native soil; and TS and N/S-ratio in wheat grain, and indicated that, plant variables showed better correlation with S-uptake than soil. The authors concluded that, TS in wheat seed followed by its N/S-ratio were found to be a better index of S supply than others.…”

Section: Resultsmentioning

confidence: 58%

“…Regarding the total sulfur (TS) in wheat grain as an index of S supply, wide range of critical levels(CLs) have been reported in literatures [12]. In line with this, [13] estimated a CL for the TS in wheat grain to be 0.118%, and this was in accordance with, that reported by other workers [18,19,20]. Their study recommended this CL, 0.118% =0.12% to be used as a provisional recommendation for wheat production in Ethiopia.…”

Section: Resultsmentioning

confidence: 79%

“…Based on this CL determined by [13,18], 0.12%, therefore, within Arsi zone about 61.8% of the fields were found to be severely S deficient (highlighted-red), and 17.7% of fields (highlighted-yellow) were found to be marginal (Fig.1). This necessitates the application of external S in some 79.5% of the studied fields/sites in this area.…”

Section: Total Sulfur Content In Wheat Grainmentioning

confidence: 96%

“…It is widely recognized that, CLs for sulfur depend on plant species, sampled part of plants, stages of development and yield level [22,23]. Assefa [13], reported that, N/S-ratio in wheat grain to be a satisfactory index of S supply he criterion set in literatures for field experiments. In accordance, [18] reported, the ratio to be a satisfactory index of S supply in wheat grain based on the threshold they determined, 17:1.…”

Section: Sulfur Ratio In Wheatmentioning

confidence: 99%

“…But, [13] in Ethiopia, reported the CL for N/S in wheat grain to be 15:1, and suggested that this can be used to separate S responsive sites or treatments from non-responsive ones. However, this was slightly lower than that determined by [18], but is comparable to that reported by [ 14.8:1.…”

Section: Sulfur Ratio In Wheatmentioning

confidence: 99%

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Assessment of Sulfur Deficiency in Soils through Plant Analysis in Three Representative Areas of the Central Highlands of Ethiopia-IV

Menna

2017

JAERI

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Field survey was conducted in Arsi(Ar), East Shewa(ES) and Oromia Liuu(OL) zones in 2012-15 cropping seasons, aimed at assessing sulfur(S) status of soils through plant analysis. The general information on land-use, soil types, were collected using semi-structured questionnaire to trace past fertilizer use. For the purpose of the reliability of data, out of 350 surveyed farmers' fields or samples, randomly selected 200 wheat seed samples were considered. Based on the critical levels(CLs) estimated for TS content in wheat seed, 0.12%, about 61.8% of the fields in Arsi were found to be severely deficient in S, and 17.7% were marginal, necessitating the application of external S in about 79.5% of the studied fields. Likewise, in ES, about 51.5% fields were found severely deficient in S, and 30.3% were marginal, again necessitating the application of external S in about 81.8% of fields. In OL, about 63.6% of the fields were severely deficient in S, and 24.2% were marginal. From the study, therefore, across all 3 locations, 59.0% of studied fields were severely S deficient and 24% were marginal. This necessitates the application of external S (full dose or some supplemental amount, depending on soil-test results) in about, 83.0% of the fields in three studied areas. This extent of S deficiency is comparable when the CL for N/S-ratio in wheat

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Section: Resultsmentioning

confidence: 58%

Section: Resultsmentioning

confidence: 79%

Section: Total Sulfur Content In Wheat Grainmentioning

confidence: 96%

Section: Sulfur Ratio In Wheatmentioning

confidence: 99%

Section: Sulfur Ratio In Wheatmentioning

confidence: 99%

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Assessment of Sulfur Deficiency in Soils through Plant Analysis in Three Representative Areas of the Central Highlands of Ethiopia-IV

Menna

2017

JAERI

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Wheat yield and changes in some major soil variables as affected by gypsum application in the Central Ethiopian highland agricultural soils

Menna

2021

Journal of Plant Nutrition

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Sulfur Mineralization: A Key Process for Diagnosing Its Deficiency in Wheat

Carciochi

Mateos

Divito

et al. 2019

Soil Science Soc of Amer J

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Core Ideas A simplified balance was used to calculate apparent S mineralization in wheat. Apparent S mineralization predicted relative wheat grain yield. Sulfate‐S before sowing combined with particulate organic C diagnosed S status. Sulfur mineralization in soil should be considered in diagnostic methods based on soil analysis. Consideration of S mineralization could aid the development of S diagnostic methods in wheat (Triticum aestivum L.) but this process has not been investigated under field conditions. The objectives of this study were to evaluate: (i) the use of a simplified S balance to quantify apparent S mineralization (Smin‐app) during the wheat growing cycle, (ii) the relationship between Smin‐app and S mineralization indicators [N mineralized in anaerobic incubation (Nan) and total and particulate organic C (TOC and POC)], and (iii) the reliability of the proposed S mineralization indicators (Nan, TOC, and POC) for diagnosing S availability alone or combined with SO42−–S content at sowing (Sini). Fourteen field experiments were conducted to evaluate grain yield in response to S fertilization. Soil samples were taken before sowing and Sini, Nan, TOC, and POC were determined. Additionally, Smin‐app was calculated in 7 out of 14 experiments through a simplified S balance. The main outcomes were: (i) Smin‐app allowed us to compare S mineralization capacity among soils and was closely related to relative wheat grain yield (R2 = 0.92), (ii) Smin‐app was related to Sini, Nan, TOC, and POC, (iii) POC was the S mineralization indicator that had the best performance for diagnosing S deficiency and its use in combination with Sini allowed for satisfactory diagnosis of S status in wheat via the equation: relative grain yield = 81.5 + (0.19 × Sini) + (1.56 × POC) (Ra2 = 0.66). Sulfur mineralization proved to be an important process for wheat S nutrition.

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Evaluation of Different Indices of Sulfur Availability in Soils for Wheat (Triticum aestivum L.) Production in Ethiopia –II

Cited by 5 publications

References 0 publications

Assessment of Sulfur Deficiency in Soils through Plant Analysis in Three Representative Areas of the Central Highlands of Ethiopia-IV

Assessment of Sulfur Deficiency in Soils through Plant Analysis in Three Representative Areas of the Central Highlands of Ethiopia-IV

Wheat yield and changes in some major soil variables as affected by gypsum application in the Central Ethiopian highland agricultural soils

Sulfur Mineralization: A Key Process for Diagnosing Its Deficiency in Wheat

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