the effect of bio fertilizer nitroxin and superabsorbent on growing traits and yield components of corn in water stress condition

Document Type : Original Article

Authors

1 Assistant of Professor, Faculty member of Research and Education of Agriculture and Natural Resources Center of Hamedan, Agricultural Research, Education & Extension Organization, Iran.

2 Associate Professor, Department of Agronomy and Plant Breeding, College of Agriculture, Islamic Azad University, Boroujerd Branch

3 Master of Agronomy, Hamadan Agricultural Jihad Organization

Abstract

this research was carried out to investigate the effects of the use of nitroxin and superabsorbent alone and in combination in moisture stress conditions on growth and yield of the corn. The experiment was arranged in split plot based on randomized complete block design with three replications. Three irrigation levels containing optimal irrigation (irrigation at soil water potential -3 bar), moderate drought stress (irrigation at soil water potential -7 bar) and severe water stress (irrigation at soil water potential -11 bar) were allocated to main plots and four bio fertilizer Nitroxin and superabsorbent levels including no application of these material (control), superabsorbent, Nitroxin as a bio-fertilizer and a combination of Nitroxin and superabsorbent were considered as sub plots. The studied traits included plant height, leaf area index, ear length, ear periphery, and row number per ear, number of seeds per row, 100 seed weight, grain yield, biological yield and harvest index. The results showed that more growing traits and yield were significantly affected by superabsorbent and Nitroxin application. This effectiveness was less under mild but more under severe stress conditions. The combined application of superabsorbent and Nitroxin in both mild and sever stress conditions created a better situation in growth traits and yield components. Total yield in severe stress treatment increased by 35%, 60% and 68%, respectively, under using of Nitroxin superabsorbent and their composition compared to non-use. Lowest grain yield (4.75 t/ha) was obtained by severe stress and no use of both of type of bio-fertilizer and superabsorbent

Keywords

References

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Horticultural Plants Nutrition
Volume 2, Issue 1 - Serial Number 3
September 2019
Pages 99-115

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