PRODUCTIVITY AND QUALITY OF QUINOA YIELD (CHENOPODIUM QUINOA, WILLD) AS AFFECTED BY PLANTING DATE AND PLANT SPACINGS

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A field experiment was conducted at the nursery of ornamental plants, Faculty of Agriculture, Minia University during 2018/2019 and 2019/2020 seasons to study the effect of three planting dates (November 1st, November 15th and December1st) and three plant spacings (10, 15 and 20 cm) on growth, yield and chemical composition of quinoa plants to obtain the best agricultural transactions under the conditions of Central Egypt. The results showed significant effects of planting dates on all the studied traits, except for plant height, weight of 1000 seeds and protein% in both seasons, with the planting date of November 15th being the best date. The effect of plant spacing was significant for all studied characters, except for weight of 1000 seeds and protein % in the first season. Planting quinoa seeds at 15 cm. was superior to the other spacings in most cases. The interaction between planting dates and plant spacing between plants was insignificant except for number of panicles/plant and yield of seeds/plant (g) in both seasons and the weight of 1000 seed (g) and seed yield/fed (ton) in the second season. Therefore, it is recommended to cultivate the quinoa on November 15th at a distance of 15 cm apart under the conditions of Central Egypt because it gave the best values ​​for economic characteristics

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