RSPONSE OF MAIZE TO FOLIAR APPLICATION OF BORON AT DIFFIRENT GROWTH PERIODS

Z. Al-Beiruty, R.; T. Fissah, A.; A. J. Jallow, R.; H. Shakir, S.

	RSPONSE OF MAIZE TO FOLIAR APPLICATION OF BORON AT DIFFIRENT GROWTH PERIODS
IRAQ JOURNAL OF AGRICULTURE
Article 1, Volume 2014, Issue 2, 2009, Pages 0-0
Authors
R. Z. Al-Beiruty; A. T. Fissah; R. A. J. Jallow; S. H. Shakir
Abstract
A field experiment was carried out during fall seasons of 2005 and 2006 at the Experimental Station-State Board For Agricultural Research- Abu. Ghraib-Ministry of Agriculture. The objective of this study was to assist the effect of foliar application of Boron on growth and yield of maize cultivar 5012. Five concentrations of Boron (0, 0.5, 1, 1.5 and 2mg B.L-1) were sprayed at three different growth periods (stages of vegetative growth, flowering and grain filling) .Results showed significant effect for increase spraying of 1.5mg B.L-1 in autumn 2005 and 2006 of leave area 84.4, 82.5 Dm2 and number of rows per ear 15.3, 16.6 and number of seeds per ear 750.1,589.3 and weight of 1000 grains 305.83, 262.6 g and grain yield 8983,7692 kg/ha. While concentration of 1.5mg B.L-1 gave high significant effect on the length of cob (18.6cm) in autumn 2006. However, growth period showed high significant effects at flowering period on ear length (17.56cm) number of kernels per ear (506.8) and grain yield (6673 Kg/ha) in autumn 2006, and weight of 1000 kernel (286.8g) in autumn 2005. Interaction between spraying boron at different growth period and concentration of boron fertilizer effect significant in autumn 2005 and 2006, The treatment of spraying boron with 1.5mg B.L-1 concentration at flowering period gave significant increase in the leave area 94.3, 89.5 Dm2 and the length of cob 20.76,19.48cm and number of rows per ear 18.0, 16.77 and number of kernels per ear 666.7, 837 and weight of 1000 grains 328.1, 288.5 g and grain yield 9944, 8871 kg/ha compared with control

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