Sorghum (Sorghum bicolor) physiology and phytomass in saline-sodic soil treated with amendments and single superphosphate

da Silva Sá, Francisco Vanies and Brito, Marcos Eric Babosa and de Andrade Silva, Luderlândio and Moreira, Romulo Carantino Lucena and etc, . (2017) Sorghum (Sorghum bicolor) physiology and phytomass in saline-sodic soil treated with amendments and single superphosphate. Australia Journal Crop Science, 11 (10). pp. 1290-1296.

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Abstract

This study aimed to evaluate the physiology and phytomass accumulation of sorghum plants, in saline-sodic soil treated with amendments and doses of single superphosphate. The experiment was conducted in the period from January to June 2013, in a greenhouse in the municipality of Pombal, Paraíba, Brazil, using samples of a saline-sodic soil. The experimental design was randomized blocks, in a 2 x 5 factorial scheme, relative to two types of amendments of sodic soil and 5 levels of single superphosphate, with 3 replicates, totaling 30 experimental units. Each plot was represented by two pots with capacity for 2 dm3 with one plant each. At 30 days after sowing, sorghum plants were evaluated for gas exchanges, chlorophyll a fluorescence and phytomass accumulation. Single superphosphate application positively stimulated the gas exchanges of sorghum plants at the doses of 97.9 mg dm-3, for the soil treated with gypsum, and 88.1 mg dm-3, for the soil treated with elemental sulfur. Soil treatment with agricultural gypsum promoted the highest levels of chlorophyll a fluorescence, in comparison to elemental sulfur treatment. Phytomass accumulation was favored by the single superphosphate, with highest accumulation when the dose of 75 mg dm-3 was applied.

Item Type: Article
Uncontrolled Keywords: Phosphate, gas exchanges, fluorescence
Subjects: Crop Improvement
Divisions: Sorghum
Depositing User: Mr T L Gautham
Date Deposited: 08 May 2018 06:07
Last Modified: 08 May 2018 06:07
URI: http://eprints.icrisat.ac.in/id/eprint/15426

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