The effect of nitrogen fertilizer levels and planting dates on some growth traits and yield of the quinoa plant : chenopodium quinoa wild

الملخص EN

A field experiment was carried out in Basra governorate, Zubair district, Burjisiya area (20) km southwest of the governorate during the winter agricultural season 2019-2020 with the aim of studying the effect of four levels of nitrogen fertilizer with four dates for agriculture and was as follows in succession (0, 60, 120, 180) kg Nh-1 agriculture date (1/10, 15/10, 1/11and 15/11) and the symbols (D1, D2, D3, D4) applied the experiment in a working-class experiment method using the design of the entire random sectors (R.

C.

B.

D.

) and three replications.

Black quinoa callana inia 420 seeds were planted in poor and marginal sandy soils irrigated with well water (EC = 9.50ds m-1) and Ph = 7.54.

The results showed that the levels of nitrogen fertilization differed morally among themselves in most of the qualities studied, the level (N3) has exceeded the level of the total seed product, the number of days of agriculture to 50% is flower, plant height, leaf area and number of inflorescences in the plant in increments (74.91 days 1011.02 kg h-1, 48.65 cm, 1877.05 cm2, 403.69 seed Inflorescence -1) in sequence compared to the comparison (N0) Agricultural dates have shown moral differences for the qualities studied, as the first date (D1) exceeds most of the qualities studied such as the characteristic of the total seed product, the height of the plant and the leaf area and the number of inflorescences in the plant and increases in the amount of (85.83days, 1139.69 kg h-1, 51.33 cm, 3098.43 cm2, 490.05seed inflorescences-1) In succession compared to the rest of the dates, the effect of the overlap between the level of fertilization and the dates morally in most qualities has recorded the combination (N3 x D1) the highest average of the total seed yield and the height of the plant and the leaf area which reached 3264.0.4 kg h-1, 61.37 cm, 3264.04 cm2) respectively.

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