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Yield response of barley to the application of mineral fertilizers containing major nutrients on Cambisols and Vertisols in Ethiopia

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Relation http://oar.icrisat.org/12155/
https://www.cambridge.org/core/journals/experimental-agriculture/article/yield-response-of-barley-to-the-application-of-mineral-fertilizers-containing-major-nutrients-on-cambisols-and-vertisols-in-ethiopia/4C746F8A9F33102312837E693CB257A2
https://doi.org/10.1017/S0014479721000223
 
Title Yield response of barley to the application of mineral fertilizers containing major nutrients on Cambisols and Vertisols in Ethiopia
 
Creator Shewangizaw, B
Gurumu, G
Agegnehu, G
Eshetu, M
Assefa, S
Hadgu, F
Seid, J
Tibebe, D
Sileshi, G W
Tamene, L
 
Subject Fertilizers
Ethiopia
 
Description Increasing barley production in the face of declining soil fertility on smallholder farms is a critical challenge
in Ethiopia. The objectives of this study were to (1) determine the optimum rates of nitrogen (N), phosphorus (P), potassium (K), and sulfur (S) fertilizers under a balanced fertilization of other macro- and micronutrients (zinc and boron) and (2) quantify the agronomic efficiency of N and P on Cambisols and Vertisols. The trials were conducted for three consecutive years (2014–2016) on farmers’ fields on 83 sites under rain-fed conditions. On each farm, six rates of N, P, K, and S with a balanced application of the other nutrients were laid out separately in a randomized block design with three replicates. Balanced fertilization resulted in yield increments of 26–59% on Cambisols and 18–74% on Vertisols, as compared with the control (0 N). Application of P increased grain yield from 11% to 30% and from 7% to 14% due to the interaction of P by soil type as compared with the control. The application of K and S,
however, had no significant effect on barley yields on either soil type. The highest agronomic efficiency of
N (AEN) was obtained from 46 kg N ha−1, with AEN increasing by 117% on Cambisols and 33% on Vertisols, as compared with the highest N rate of 230 kg N ha−1. The maximum agronomic efficiency of P (AEP) was recorded with 10 kg P ha−1 on Vertisols, with AEP increasing by 73% on Cambisols and 452% on Vertisols, as compared with the application of 50 kg P ha−1. With balanced application of other nutrients, use of 230 kg N and 20 kg P ha−1 was recommended for tepid sub-moist mid-highlands and Vertisols. For tepid sub-humid mid-highlands, application of 46 kg N and 20 kg P ha−1 with balanced application of other nutrients was recommended. For Cambisols, application of 230 kg N and 40 kg P ha−1 was recommended with balanced application of the other nutrients. Similarly, application of 230 kg N, 40 kg P, and 10 kg S ha−1 was tentatively recommended for cool sub-most mid highlands. However, response to K was inconsistent and therefore a firm recommendation could not be proposed for the study sites. Further research needs to be conducted on more soil types and locations.
 
Publisher Cambridge University Press
 
Date 2021-11-11
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights cc_attribution
 
Identifier http://oar.icrisat.org/12155/1/Experimental%20Agriculture_58_1-15_2022.pdf
Shewangizaw, B and Gurumu, G and Agegnehu, G and Eshetu, M and Assefa, S and Hadgu, F and Seid, J and Tibebe, D and Sileshi, G W and Tamene, L (2021) Yield response of barley to the application of mineral fertilizers containing major nutrients on Cambisols and Vertisols in Ethiopia. Experimental Agriculture, 58. 01-15. ISSN 1469-4441