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15 July 2021 Phosphorus fertilisation and biochar impacts on soil fertility and wheat (Triticum aestivum) productivity under semiarid conditions
E. K. Mahmoud, M. Ibrahim, A. Khader
Author Affiliations +
Abstract

The Egyptian soil contains low organic matter and high calcium carbonate with a pH of 7.5–8.2, which reduces the availability of phosphorus (P) improve the efficiency of applying P fertilisers in alkaline soils. Therefore, the aim of this study is to evaluate the effect of biochar (B) at 0 t ha−1 and 10 t ha−1 with different P fertiliser rates (i.e. 0% P, 50% P, 100% P and 150% P of the recommended dose) on wheat yield (Triticum aestivum L.) and soil fertility in clay texture soil during the 2015–2016 and 2016–2017 growing seasons. The results show a significant increase in all of the following: soil availability and plant uptake of NPK; flag leaf area (FLA); the number of fertile tillers (NFT); the number of grains in spike (NGS), and the grain yield of wheat plants treated with P fertiliser alone, or when P fertiliser combined with biochar addition. FLA increased by 81.82% and 72.27% in the plots treated with biochar during the 1st and 2nd seasons respectively. Wheat uptake of total nitrogen–P–potassium (NPK) increased as a result of increasing the concentration of inorganic P in the studied soil. It is noteworthy that adding biochar to P fertiliser supplements P-fertiliser such as in the treatment of 10 t ha−1 biochar at 50% P, where the highest grain yield was recorded compared with adding 100% P and 150% P of the recommended dose. The results indicated that integrating biochar and P fertiliser can be a practical approach to improve wheat production and soil fertility.

© 2023 The Author(s) (or their employer(s)). Published by CSIRO Publishing
E. K. Mahmoud, M. Ibrahim, and A. Khader "Phosphorus fertilisation and biochar impacts on soil fertility and wheat (Triticum aestivum) productivity under semiarid conditions," Crop and Pasture Science 74(2), 21-30, (15 July 2021). https://doi.org/10.1071/CP21095
Received: 10 February 2021; Accepted: 27 May 2021; Published: 15 July 2021
KEYWORDS
Biochar
phosphorus
semiarid regions
soil fertility
wheat productivity
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