Effect of Adding Sheep Manure and Organic Extracts on Fenugreek (Trigonella foenum-graecum L.) Growth and Yield

Abstract A field experiment was conducted in one of the agricultural fields of the College of Agriculture, University of Anbar, in a sandy loam soil to cultivate fenugreek plants according to a randomized complete block design with three blocks to study the effect of adding sheep manure before planting at three levels (without addition (A 0 0 µg.ha −1 ), A 1 6 µg ha −1 , A 2 8 µg.ha −1 ). The treatments were also sprayed with commercial organic acids at concentrations of (0.5, 1, and 1.5) ml.L −1 , were denoted as G 1 , G 2 , and G 3 , respectively. The treatments were also sprayed with manufactured organic acids at concentrations of (0.5, 1, and 1.5 ml L −1 ) and were denoted as M 1 , M 2 , and M 3 , respectively. In addition, there was a treatment of spraying with distilled water only (C). The results showed that the second level of sheep manure (A 2 ) was superior with the highest rate for all growth and yield traits. The manufactured organic acids were superior with the highest rate of plant height, number of branches plant −1 , number of pods plant −1 , and number of seeds.pod −1 . While the treatment of spraying with both industrial (M 3 ) and commercial (G 3 ) organic acids outperformed with the same rate for the weight of 100 seeds (1.7gm). The treatment of spraying with commercial organic acids (G 2 ) was superior with the highest yield of 1.002 µg.ha −1 , but it did not differ significantly from manufactured organic acids. The best interaction in giving the highest yield of fenugreek seeds in treatment A 2 G 2 was 2.142 µg.ha- 1 compared to control treatment A 0 C when the yield of fenugreek seeds was 0.022 µg.ha −1 .