Effect of Source Manipulation with Defoliation and Nitrogen on Maize

Document Type : Original Article

Author

Department of Plant Production and Genetics Engineering, Faculty of Agricultural Science and Engineering, Razi University, Kermanshah, Iran

Abstract

Maize is one of the most important grains in the world. The leaves play an important role in providing grain reserves in cereals by performing ‎photosynthesis. The leaf is known as the source and the seed is known as the sink. Removing part of ‎the leaf can decrease the amount of photosynthetic material produced by the plant. A C4 plant, maize has been widely cultivated as a summer plant in western  ‎Iran in recent years. Utilizing maize for both grain and forage can reduce the amount of woody ‎residues left by this plant in the soil while providing part of the forage for livestock. Field and laboratory experiments were conducted to investigate the effect of defoliation and nitrogen on seed yield and germination characteristics of seeds derived from the maternal plant. Defoliation intensities (removing none, half of the leaves, or all of the leaves per plant) and nitrogen rates (zero and 100 kg ha-1) were among the variables examined. Nitrogen and defoliation as two source manipulations were used. The results demonstrated a significant decrease in the number of seeds per ear row and column, cob length and weight, and seed yield upon complete defoliation during the tasselling stage. Germination features of generated seeds were also affected by the maternal plant environment. Under removal of all leaves per plant, seed germination percentage, seed vigor, and seedling weight were reduced. Harvesting of the half-green leaves prior to the ripening of the seeds did not result in a decrease in seed yield or ‎germination characteristics of the generated seeds. Nitrogen had less application of an impact on the analyzed maize features than defoliation. In conclusion, half of the green leaves in maize can be harvested before seed maturity without reducing seed yield and seed germination.

Keywords

References

Barimavandi AR, Sedaghathoor S, Ansari R. (2010). Effect of different defoliation treatments on yield and yield components in maize (Zea mays L.) cultivar of S.C704. Australian Journal of Crop Science. 4: 9-15.
Cavagnaro RA, Oyarzabal M, Oesterheld M, Grimoldi AA. (2021). Species-specific trade-offs between regrowth and mycorrhizas in the face of defoliation and phosphorus addition. Fungal Ecology. 51: 101058. Doi:10.1016/j.funeco.2021.101058.
Cook LJ and Lovett JV (1974). Response of oats to nitrogen and defoliation. Australian Journal of Experimental Agriculture and Animal Husbandry. 14: 373-379. Doi:10.1071/EA9740373
Császár O, Tóth F, Lajos K. (2021). Estimation of the expected maximal defoliation and yield loss caused by cereal leaf beetle (Oulema melanopus L.) larvae in winter wheat (Triticum aestivum L.). Crop Protection. 145: 105644. Doi:10.1016/j.cropro.2021.105644.
Erbas S and Baydar H. (2007). Defoliation effects on sunflower (Helianthus annuus L.) seed yield and oil quality. Turkish Journal of Biology. 31: 115-118.
Fallahi J, Khajeh-Hosseini M. (2011). Effects of applying various levels of nitrogen on parent plants on the resistance to salinity stress in achieved seeds in Triticum aestivum L. cv. Gaskojen at germination period. Journal of Agricultural Technology. 7: 1743-1754.
Fasae OA, Adu FI, Aina ABJ, Elemo KA. (2009). Effects of defoliation time of maize on leaf yield, quality and storage of maize leafs as dry season forage for ruminant production. Revista Brasileira de Ciencias Agrárias. 4: 353-357. Doi:10.5039/agraria.v4i3a19
Ferretti M, Bacaro G, Brunialti G, Calderisi M, Croisé L, Frati L, Nicolas M. (2021). Tree canopy defoliation can reveal growth decline in mid-latitude temperate forests. Ecological Indicators. 127: 107749. Doi:10.1016/j.ecolind.2021.107749
Grimmett SG. (1967). The effect of severity of defoliation and nitrogen fertilizer on the growth of Phalaris tuberosa L. Grass and Forage Science. 22: 42-45. Doi:10.1111/j.1365-2494.1967.tb00500.x
Gutie´rrez-Miceli FA, Morales-Torres R, de Jesu´ s Espinosa-Castan˜ eda Y, Rinco´ n-Rosales R, Montes-Molina J, Oliva-Llaven MA, Dendooven L. (2004). Effects of partial defoliation on sucrose accumulation, enzyme activity and agronomic parameters in sugar cane (Saccharum spp.). Journal of Agronomy & Crop Science. 190: 256-261. Doi:10.1111/j.1439-037X.2004.00103.x
Heidari H, Fatahi A, Saeedi M, Khoramivafa M. (2013). Study of defoliation intensity and nitrogen rate effects on yield, yield components, and germination traits of produced seed in wheat (Triticum aestivum). Agricultura – Ştiinţă şi practică. 1-2: 11-17.
IMO. (2023). Iran Meteorological Organization, Meteorological data. http://www.weather.ir (Accessed on 22 3 2023).
Jadia CD and Fulekar MH. (2008). Phytoremediation: The application of vermicompost to remove zinc, cadmium, copper, nickel, and lead by sunflower plant. Environmental Engineering and Management Journal. 7: 547-558. Doi:10.30638/eemj.2008.078
Khan ShMA, Poswal MA, Rana MA, Baitullah. (2001). Simulation of leaf damage by artificial defoliation and its effect on sunflower (Helianthus annuus L.) performance. HELIA. 24: 145-154. Doi:10.1515/helia.2001.24.34.145
Koptur S, Smith CL, Lawton JH. (1996). Effects of artificial defoliation on reproductive allocation in the common vetch Vicia sativa (fabaceae; papilionoideae). American Journal of Botany. 83: 886-889. Doi:10.1002/j.1537-2197.1996.tb12780.x
Li Y, Yang H, Xia J, Zhang W, Wan S, Li L. (2011). Effects of increased nitrogen deposition and precipitation on seed and seedling production of Potentilla tanacetifolia in a temperate steppe ecosystem. PLoS ONE. 6: 1-8. Doi:10.1371/journal.pone.0028601
Mohammaddoust HR, Asghari A, Tulikov AM, Hasanzadeh M, Saidi MR. (2008). Effect of fertilizer application on density, dry matter and seed characteristics of garden cornflower (Centaurea cyanus L.) and corn spurrey (Spergula vulgaris L.). Pakistan Journal of Weed Science Research. 14: 73-80.
Oskouie B. (2012). Effect of mother plant nitrogen application on seed establishment of rapeseed. International Journal of AgriScience. 2: 444-450.
Pinkard EA, Battaglia M, Mohammed C. (2007). Defoliation and nitrogen effects on photosynthesis and growth of Eucalyptus globulus. Tree Physiology. 27: 1053-1063. Doi:10.1093/treephys/27.7.1053.
Umashankara KB. (2007). Influence of stage and levels of defoliation on seed yield and quality of fodder maize (c.v. South African Tall). Department of Seed Science and Technology, M. Sc. thesis, University of Agricultural Sciences, Dharwad, 77 p.
Waterman RC and Vermeire LT. (2021). Annual bromes decrease with increasing fall defoliation intensity. Global Ecology and Conservation. 28: e01652. Doi:10.1016/j.gecco.2021.e01652.
Plant, Algae, and Environment
Volume 8, Issue 2
2024
Pages 1364-1373

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