EFFECT OF HUMIC ACID SPRAY ON GROWTH CHARACTERISTICS OF WHEAT VARIETIES

Abstract

  A field experiment conducted in 2018-2019 in the Nile district Iraq according split split plot. The varieties as main treatment (Baghdad 2 and Sham 6), spraying dates (elongation stage, endothelium stage and flowering stage) sub treatment while the humic acid concentrations occupied (3,1.5,0 cm3. L-1) as sub treatment. The differences were significant between different treatments. The variety Baghdad 2 was significantly superior in traits, plant height, number of branches, spikes, grains per spike and. weight of grain. The total yield of grains was 9.13 ton. ha -1. The spraying dates showed significant differences, as the spraying at flowering stage was better in most characteristics, area of ​​the flag leaf, spike length, number of grains/ pike-, weight of grain.gm, and total yield Spray at the endometrium stage resulted in maximum height, spike, while spray at the highest value in the variety number of beaches reached 434.79 beach.m2, the number of spikes.m2 380.21 spike.m2. The humic acid concentrations showed a significant difference. The humic acid   as the resulted in maximum plant height, area of ​​flag, number of tillersperm2, spike length, number of spikes per m2, the number of grains per spike, weight of 1000grain and the total yield of grains. The interaction between the varieties and the spraying dates C and S, the combination C2 + S3 was superior to the size of the flag leaf area cm2, weight 1000grain.gm and the total yield of grains ton. ha-1. 36.74 cm2, 8.60cm, 37.83 g, 9.97 ton. ha-1. While the combination C2 + S3 outperformed the area of ​​the flag leaf and gave an average of 36.74 cm2 and the combination C2 + S1 outperformed the number of spikes.m2, and gave the highest average of 382.18 spike. m2, while the combination C1 + S3 only outperformed the number of grains and gave the highest average of 65.72grain. Spike -1 The results of the bilateral interaction between the varieties and the fertilizer spraying concentrations C + F indicated the presence of a significant effect among the combinations, as the combination C2 + F3 was superior to the plant height of 106.56 cm, number of spikes.m2 381.22, weight of 1000grain, 37.69 gm, and the total grain yield ton. ha-1 9.40 ton. ha-1. C1 + F3 combination outperformed the spike length. Cm and it gave 8.97 and the results of the research showed that there were significant differences for the bilateral interaction between appointment and concentration S + F, and the combination S3 + F3 was superior in the following characteristics to the number of grains. Spike -1 weight 1000grain. The total grain yield is 67.90grain. spike-1 and 37.32 gm, 9.60 ton. ha-1. The combination S2 + F3 excelled in the height of the plant only and gave 105.20 cm.