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Yield and phosphorus efficiency of some lowland rice varieties at different levels of soil‐available phosphorus


Saleque, M. A. and Abedin, M. J. and Panaullah, G. M. and Bhuiyan, N. I. (1998) Yield and phosphorus efficiency of some lowland rice varieties at different levels of soil‐available phosphorus. Communications in Soil Science and Plant Analysis, 29 (19-20). pp. 2905-2916. ISSN 0010-3624; ESSN: 1532-2416


A field experiment was conducted on an Aeric Haplaquept soil to study the effect of phosphorus (P) deficiency in soil on the P nutrition and yield of five modern varieties of rice, viz., Purbachi, BR1, BR3, BR14, and BR29, popular with the rice farmers of Bangladesh. Soil-available P in the different plots of the experimental field varied widely, from 2.8 to 16.4 ppm. This plot to plot variation in soil-available P content resulted from differences in the total amounts (0 to 480 kg ha -1) of P the plots had received over a period of 8 years in a long-term P fertilizer trial conducted previously in the same field. Phosphorus deficiency in soil drastically reduced the grain yield of all the rice varieties. In severely P deficient plots, where soil-available P was around 3 ppm, the yield was less than 1 ton ha -1 while in plots containing an adequate P level, i.e., >6 ppm, the yield was more than 4 t ha -1. Rice yield increased linearly with an increase in soil P content up to 6 ppm, and the highest grain yield for any variety, obtained at 6-7 ppm of soil-available P leveled off at this point. Soil P deficiency not only decreased rice yield severely but also decreased P content in straw and grain drastically. However, differences among rice varieties were noted in P nutrition, particularly at low soil P levels. The rice varieties differed markedly also in respect of internal P efficiency. The BR29 showed the highest internal P efficiency both at low and high soil P levels. In all the rice varieties, internal P efficiency decreased with an increase in soil P levels.

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Additional Metadata

Item Type: Article
Divisions: Universiti Putra Malaysia
DOI Number: https://doi.org/10.1080/00103629809370164
Publisher: Marcel Dekker
Keywords: Phosphorus; Rice; Soil fertility; Yield response
Depositing User: Nabilah Mustapa
Date Deposited: 06 Sep 2017 07:54
Last Modified: 06 Sep 2017 07:54
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1080/00103629809370164
URI: http://psasir.upm.edu.my/id/eprint/51786
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