Response of hard wheat (Marjawii Cultivar) to seeding rates under El – Baida conditions at Al-Jabal Al-akhdar- Libya

Abstract

Two field experiments were conducted at the Crops science Research Station at Agronomy Department –Agriculture Faculty at Omar Al-Mukhtar University investigated the  effect of seeding dates (First Dec, Mid Dec and First Jan) on growth and yield traits during the two seasons 2015-2016 and 2016-2017. The results exhibited significant increase of crop growth rate; bearing tillers m^-2, spike weight, number of spike grains and weight from 1^st Dec regarding to 1^st Jan. Mid Dec gave largest leaf area index and plant height, comparing to 1^stJan in both two seasons. Significant increase of biological yield 5.95, 5.86 tha^-1; grain yield 1.26, 1.26 tha^-1 and straw yield 4.69, 4.60 tha^-1 from 1^st Dec seeding comparing to the least 2.54, 2.56, 0.49, 0.70 and 2.05, 1.86 tha^-1from biological, grain and straw yield, respectively during 1^st Jan seeding meanwhile that date recorded significant increase in second season only in harvest index and grains protein contents 12.66, 12.68% comparing to 10.84, 10.86% during 1^st Dec seeding in both two Seasons, respectively. Incoelusion seeding at 1^st Dec gave the greatest quantity, while 1^st Jan gave greatest quality