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Journal of Applied Sciences

Year: 2002 | Volume: 2 | Issue: 6 | Page No.: 631-636
DOI: 10.3923/jas.2002.631.636
Effect of Soil Salinity and Sodicity with and Without Soil Conditioner (polyacrylamide) on the Seedling Emergence and Growth of Different Wheat Varieties
I. Rajpar and N.B. Sial

Abstract: A pot experiment in a clay loam soil was conducted to investigate the effect of high soil sodicity with poor (ESP 50) and stable structure (ESP 50 + plolyacrylamide (PAM)) and high soil salinity (ECe 19 dS/m) on seeding emergence and growth of eight (Kharchia-65, Anmol, NIAB-20, PAK-81, TW-161, Bakhtwar, KTDH-19 and SARC-1) wheat varieties. Seeding emergence, shoot height, shoot dry weight and root length were decreased by both salinity and sodicity. With the exception of seedling emergence, the effects of sodicity were greater than salinity. On the basis of shoot dry weight as an indicator some varieties (PAK-81, Bakhtwar, KTDH-19 and Anmol) were susceptible to both stresses and showed large decreases. In some varieties (SARC-1, TW-161, NIAB-20 and Kharchia-65) the effects of sodicity were greater than salinity, where as in others this trend was reversed. Addition of soil conditioner (PAM) in presence of high ESP increased water stable aggregates % which resulted in increase in seedling emergence, shoot height and shoot dry weight. All varieties except Bakhtwar, KTDH-19 and SARC-1 showed positive response to improved soil structure. However, the response was greater in some varieties (TW161, PAK-81 and Kharchia-65) than (Anoml and NIAB-20 others.

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How to cite this article
I. Rajpar and N.B. Sial, 2002. Effect of Soil Salinity and Sodicity with and Without Soil Conditioner (polyacrylamide) on the Seedling Emergence and Growth of Different Wheat Varieties. Journal of Applied Sciences, 2: 631-636.

Keywords: polymer, salinity, sodicity, soil structure and wheat

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