Role of Salicylic acid in stay green, growth and yield of two purposes maize hybrid

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An experiment was conducted during the winter season of 2020-2021 in the fields of a farmer in the city of Ramadi - Anbar province - Iraq, according to the randomized complete block design [RCBD] with split-plot arrangement and three replications. The study examined the effect of four seed rates [100, 130, 160, and 190 kg ha-1] on the growth and yield of four barley varieties [IPA256, Amal, Buhooth 22, and Baraq]. Seed rates allocated to the main plot, while the varieties allocated to the sub-plots. The results showed that the seed rate of 100 kg ha-1 gave the highest mean leaf area of 14.52 cm2 and the highest 1000-grain weight of 46.88 g. However, the seed rate of 190 kg ha-1 outperformed in crop growth rate, biological yield, grain yield, and harvest index, with 14.19 g m-2 day-1, 20.50 ton ha-1, 5.59 ton ha-1, and 27.40%, respectively. The varieties differed significantly in most of the studied traits, with the variety Buhooth 22 outperformed with the highest mean leaf area and biological yield of 13.05 cm2 and 20.69 ton ha-1, respectively. However, the variety IPA256 gave the highest mean crop growth rate, yield per unit area, and harvest index of 14.38 g m-2 day-1, 5.77 ton ha-1, and 32.23%, respectively. The interaction between varieties and seed rates showed that the variety IPA256 with the seed rate of 190 kg ha-1 gave the highest yield per unit area of 6.17 ton ha-1.

Section: Biological Yieldsupporting

confidence: 94%

Response of Four Barley Varieties to the Effect of Seed Rates

Abas,

Abdulhamed,

Abood

2024

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“…Additionally, the Carlup cultivar's superior performance in flag leaf area and chlorophyll content (as observed in Tables 3 and 5) may contribute to its improved spikelet production. These findings align with observations reported by Siloriya et al, [26] The results indicate that Kinetin spraying led to a significant increase in spikelets per panicle compared to the control treatment. The treatment sprayed with the concentration of 150 mg L -1 Kinetin significantly outperformed with the highest average at 41.44 Spikelets panicle -1 .…”

Section: Number Of Spikelets Per Panicle (Spikelets Panicle -1 )supporting

confidence: 92%

The Growth and Yield of Oat Cultivars Influenced by Kinetin Application

Saleh,

Abdulkareem,

Shahatha

et al. 2024

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A field experiment was conducted during the winter season (2021-2022) at the College of Agriculture Research Station - Anbar University, located at longitude 43.39 and latitude 33.44, to study the effect of foliar nutrition with kinetin on some growth and yield traits of oat cultivars. In this study, a split-plot design according to RCBD with three replications was used. The main plots included kinetin levels (0, 50, 100, and 150) mg L-1, while the cultivars (Al-Juda, Carlup, Genzania) were allocated to sub-plots. Oat cultivars differed significantly in most of the studied traits. The Carlup cultivar recorded the shortest duration to reach the physiological maturity stage and the highest plant height (118.01 cm), leaf area, average number of tillers per unit area, chlorophyll content, and grain yield (5.38 tons ha-1). Kinetin application improved the studied vegetative growth traits, yield, and its components. The concentration of 150 mg L-1 outperformed in most of the studied traits such as chlorophyll content, leaf area, number of tillers, and grain yield (5.73 tons ha-1), and did not differ significantly from the concentration of 100 mg L-1. A significant interaction effect between cultivars and kinetin concentrations was found in most of the studied traits. Plants of the Carlup cultivar sprayed with a concentration of 150 mg L-1 achieved the highest average grain yield of 5.96 tons ha-1.

“…It was added in two splits, the first at planting and the second at the beginning of flowering. Triple superphosphate fertilizer was also added at a rate of 43 kg P ha -1 in a single application at the time of land preparation for planting [12]. The following traits were studied:  Number of days from planting to 50% silking (days).…”

Section: Methodsmentioning

confidence: 99%

Response of Several Maize Cultivars to Potassium Fertilizer Levels

Abdulkareem,

Aoad,

AL-Jabbar Salih

et al. 2024

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The study was conducted to investigate the response of four maize cultivars to potassium fertilization. The research was conducted in the center of Ramadi city, Anbar Governorate, in the fields of one of the farmers during the spring and autumn seasons of 2023. A factorial experiment was conducted according to randomized complete blocks design with four replicates. The potassium levels were (0, 100, 200) kg ha-1, and four cultivars (Rabi, Al-Maha, Baghdad, 5018). The results showed that the Al-Maha cultivar outperformed in grain yield (7.58 tons ha-1), highest weight of 300 grains (83.31 g in the spring season), and Baghdad cultivar for the autumn season at 8.90 tons ha-1, as well as highest number of grains per ear (789.4 grains). The potassium fertilizer level of 200 kg.ha-1 achieved early female flowering (silking), highest plant height, leaf area, number of grains per ear, and grain yield in both seasons. There was a significant interaction between the cultivars and potassium fertilizer levels in all traits except for the weight of 300 grains.