Abstract
A field experiment was condueted at the experimental Farm, College of Agriculture University of AL-Anbar in replace location (Abu-Gheaib) in spring season of 2017. While in Fall season it was applied at AL-saqluwiya-Anbar Province 10 km west north of Falluga city to study the effect of four levels of licorice extractor (Glycyrrhiza glabra L.) (0,2,4 and 6) g.L-1 water and three (53,333, 66,666 and 88,888 plant) plant.ha-1. On growth and grain yield of Sorghum cv. Rabih. The experiment was applied using R.C.B.D. arranged in split plots with three replications. levels of plant densities were used as main-plot, while licorice extractor were used as sub-plot. Foliar application of licorice extractor was applied during vegetative growth. The results showed that, high plant density (88888) plant.h-1 significantly increase plant height and leaf area index, while most of traits were not significantly influenced by plant density including grain yield. Results revealed that foliar application of licorice extractor with 2,4,6 g.L-1 of water significantly influenced grain yield in spring season compane with control treatment and it is amounted to (9.62, 9.55 and 9.78) t.h-1 respectively. There were significant interaction between Licorice extractor and plant density in spring and fall season in grain yield. The higher grain yield of 10.31 and 10.33 t.h-1 were obtained when sorghum plants were sowing at hight density and sprayed with Licorice extractor at level 4 g.L-1 respectively
Highlights
The results showed that, high plant density (88888) plant.h-1 significantly increase plant height and leaf area index, while most of traits were not significantly influenced by plant density including grain yield
He mentioned to the reduction of leaf area due to increased plant density where the high density had the highest mean reached 3664 cm-2. plant[1] and that was in his study of three plant densities with three planting space during spring season, the reason might be because of plants compete for growth requirements
Abdul-Hamid (2) Clearfield that increasing plant density will increase the yield where density of plant ha-1 gave 5.79 ton.h-1 with increasing rate of 6.62%, 13.67% respectively compared to plant per hectare for the spring season, while for the fall season the same density showed increasing percentage in the yield reached 5.90% and 16.66% compared to density of thousand plant.ha-1 respectively
Summary
The within the row Al-Janabi (7) referred to the significant impact of plant density on plant height, where the spacing within the row 10 cm gave the highest value of plant height reached (179.89 cm), while, the lowest value (166.42) was at spacing of 15 cm He mentioned to the reduction of leaf area due to increased plant density where the high density had the highest mean reached 3664 cm-2. Plant[1] and that was in his study of three plant densities with three planting space during spring season, the reason might be because of plants compete for growth requirements It was confirmed by Al- Janabi (7) that the harvest index is reducing with increased plant density and that due to increased cereal production, where inter-rows spacing of 70 cm had the greatest value (31.03 %) of harvest index while 60 cm inter-rows spacing had the lowest (25.89 %) harvest index.
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