Morpho-physiological responses of wheat to silicon and bio-fertilizer under water-deficit conditions

Issue Date

3-2022

Abstract

Recently, the use of silicon and bio-fertilizer has become important worldwide to improve the physicochemical characteristics of soil. Thus, they are used as an alternative approach to cope with the water-deficit stress on wheat plant. In this regard, a split-plot factorial experiment based on randomized complete block design with three replications was conducted during 2017 and 2018 at Sistan and Baluchestan Research Station, Iran. In the present study, treatments included water-deficit stress (irrigation after 60, 120, and 180 mm of evaporation from Class A pan) as the main plot, as well as the application of silicic acid (Si) foliar nutrition (0, 1, and 1.5 mM) and Nitro-Kara bio-fertilizer as sub-plots. The results represented the significant interaction effects of irrigation regimes, bio-fertilizer, and Si on 1000-grain weight and panicle number. In addition, the co-application of Nitro-Kara and Si fertilizers (1 mM) under irrigation after 120 mm evaporation led to the highest grain per panicle (44 number), which reflected a 21.36% increase compared to the control. The greatest 1000-grain weight (39.66 g) was obtained by inoculating seed with Nitro-Kara and without to apply Si fertilizer under 120 mm irrigation treatment in the first year. Further, inoculation under moderate stress (120 mm) in the second year demonstrated the highest grain yield (5,256.3 kg ha-1). Furthermore, a high chlorophyll index (57.6) was achieved when consuming 1.5 mM Si fertilizer and without Nitro Kara under 120 mm irrigation regime during the first year, which had a 20.2% enhancement compared to the control treatment. Under low irrigation conditions, the use of Nitro-Kara bio-fertilizer and Si fertilizer resulted generally in improving physiological parameters and increasing the growth and yield indices of wheat.

Source or Periodical Title

Philippine Agricultural Scientist

ISSN

0031-7454

Volume

105

Issue

1

Page

48-60

Document Type

Article

Frequency

quarterly

Physical Description

graph, tables

Language

English

Subject

wheat, morpho-physiological response, silicon, biofertilizer, water deficit

Identifier

https://pas.cafs.uplb.edu.ph/2022/march-2022-vol-105-no-1/

Digital Copy

Yes

En – AGROVOC descriptors

TRITICUM AESTIVUM; MORPHOLOGY; PHYSIOLOGICAL RESPONSE; SILICON; BIOFERTILIZERS; WATER DEPRIVATION; WATER SCARCITY

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