Determined the Oat (Avena sativa L.) genotype sresponding to different planting dates in southern Iraq
By: Ali Muaid Shaker, Mahmood Shaimaa Ibrahem, Mahdi Salih Mizel
Key Words: Forage and grain yield, Oat genotypes, Planting dates, SPAD
Int. J. Agron. Agri. Res. 9(6), 33-43, December 2016.
Although the oat crop is an important forage crops by many countries to face the problem of lacking forage to feed livestock, it still is not popular in southern Iraq. Establishing oat productivity, especially in southern Iraq needs to limit the best genotypes and planting dates in this area. Thus, factorial experiment arranged in randomized complete block design to understand response of three oat genotype (Wallaro, Carrolup and Wild) in four planting dates (20-10, 1-11, 10-11, and 20-11) at two locations (Thi-Qar and Al-Muthana). Plant height, flag leave area, chlorophyll content (SPAD), period of physiological maturity day-1, wet and dry forage yield t ha-1, grains yield t ha-1 and its components (number of panicles m-2, number of grains panicle-1, and weight of 100 grains g-1), and the grains protein percentage observed as crop related measurements. All these traits significantly differed among the genotypes and affected by the planting dates. Significant responding of forage and grains yield to planting date found, and the highest wet and dry forage yield obtained from Wallaro and Carrolup genotypes sowing at the second planting date at both locations. Grains yield was 6.88 and 7.03 t ha-1 for Wallaro genotype planted at the second planting date at Thi-Qar and Al-Muthana locations respectively. Thus, adopting oat crop in this area needs to focus on planning date, especially from first to mid-November with using Wallaro genotype for grain production and Carrolupas a forage crop.