The effect of plant density on growth and seed yield of quinoa (Chenopodium quinoa Willd.) in the middle region of Syria
Keywords:
quinoa, plant densities, growth, seed yieldAbstract
A field experiment was conducted at Homs Agricultural Research Center, General Commission for Scientific Agricultural Research (GCSAR), Syria, during 2021 season, to study the effect of plant density on quinoa growth and seed yield in the middle region of Syria. The experiment was laid out according to randomized completely block design (RCBD) in split plot arrangement with three replicates. Experimental factors included five introduced varieties (Giza, Titicaca, Red Carina, Q26 and NSL) and six plant densities (50 ×10, 50 ×15, 50 ×20, 30 ×10, 15 × 30 and 20×30 cm). The results of statistical analysis showed significant differences (P≤0.05) among studied varieties, plant densities and interaction between verities and plant densities for all investigated traits. Plant height was significantly higher for variety Red Carina at density of 30 × 10 (214.3 cm), stem diameter was significantly higher for variety Q26 at density of 50 × 20 (11.067 cm), panicle length was significantly higher for variety NSL at density of 50 × 20 (42.6 cm), panicle width was significantly higher, for variety NSL, at density of 50 × 15 (17.0 cm), seed yield was significantly higher for variety Giza-1 at density of 50 × 15 (2068.7 kg/ha) and variety Q26 at density of 50 × 20 (2058.7 kg/ha). Biological yield was significantly higher for variety Q26 at density of 50 × 20 (6759.3 kg/ha). The study recommends to grow quinoa at density of 50 × 20 to get the best morphological and production traits. Also, Q26 variety is recommended to be grown as compared with the other varieties.
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