Effect of maize planting date and Johnson grass (Sorghum halopense L.) density on yield and yield components of maize
Journal Title: International Journal of Farming and Allied Sciences - Year 2014, Vol 3, Issue 1
Abstract
In order to evaluate the Johnson grass weed effect on the maize yield and yield component was performed an experiment as complete randomized block design with four replications and two planting date of maize in the Moghan agriculture research station field. The experimental treatments included different Johnson grass densities ( , , , and pl/ m ). The experiment results showed that there was significant difference at probably level between planting dates for the attributes such as yield, plant height, maize ear length and maize leaf area index but the difference was non-significant for attributes such as biological yield, harvesting index, stem diameter and maize ear diameter. Also, the interaction of planting date and treatment showed significant difference for attributes such as yield, biological yield. Plant height, ear diameter and maize leaf area index at probably level and for attribute such as ear length at probably level. The results indicated that Johnson grass density increasing from numbers per square meter to , and numbers caused to decrease yield and yield component of maize, strongly. The most amounts of maize measured attributes amounts was in compare to the control treatment without weed at the first planting date under numbers per square meter of Johnson grass density and the less amount was related to the first or second planting date under numbers per square meter of Johnson grass density.
Authors and Affiliations
Parviz Sharifi Ziveh, Ghorban Didehbaz Moghanlo, Rasoul Fakhari
Keywords
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