RESPONSE OF WHEAT SEEDING RATE TO PLANTING PATTERN CHANGING AND ITS IMPACT ON GRAIN YIELD AND ITS COMPONENTS

Abstract

A field experiment was conducted at field of one farmers in the province of Babylon - district of Mahaweel - Bida area 30 km north of Babylon during winter season of 2014 - 2015. To study response of wheat seeding rate to planting pattern changing and its impact on grain yield and its components, the experiment was arranged as a split plot in a Randomized Complete Block Design (RCBD) with three replicates , Treatment of planting pattern (broadcasting and broadcasting transfer to furrow) occupied the main plots , while, The seeding rates (80, 120 and 160 kg ha - 1) were put in the sup - plots . The results showed that planting pattern ( broadcasting transfer to furrow ) gave increase in the number of spikelet per spike, number of floral per spike , dry weight of spike (g), number of spikes per square meter, and grain yield (kg ha-1), 22.09, 61.09, 4.52, 397.44, 34.44 and 6027. 33 respectively. While seeding rate 120 kg ha-1 gave the highest dry weight of flag leaf (2.03 g), dry weight of the spike (4.54 g) and grain yield ( 6411.82 kg ha - 1 ). The interaction was significant between the planting pattern and seeding rates in the number of spike , dry weight of the spike and length of the spike. Although there was no significant interaction in the grain yield (kg ha - 1), there was a clear numerical superiority of the combination of planting pattern (broadcasting transfer to furrow) with seeding rate ( 120 kg ha - 1 ) , in a grain yield 6630.50 kg ha - 1 .It may be conclude from the research that the best planting pattern ( broadcasting transfer to furrow) with a seeding rate of 120 kg ha - 1.