Effect of Row Spacing on the Growth and Yield of Peanut (Arachis hypogaea L.) Varieties in Cau Ngang, Tra Vinh, Vietnam

Field experiments were conducted at the research field of the Cau Ngang, Tra Vinh from May to October to determine the influence of row spacing on growth and yield of peanut under wet and dry season (2023). The experimental design was a 6×5 factorial was a split-split plot experiment laid out in randomized complete block design with three replicates. The factors studied included: Variety [(A1) MD7; (A2) HATRI 03 ĐP; (A3) HATRI 02 ĐP; (A4) HATRI 14 ĐP; (A5)VD08; (A6) VD01-01]; (M) Row spacing [(M1) 20×20 cm, (M2) 15x20 cm, (M3) 15×15 cm, (M4) 10x20 cm, (M5) fellow farmers 10x10 cm] The result showed that Peanut varieties HATRI 03 DP, HATRI 02 DP, HATRI 14 DP, VD08, VD01-01 have weight the seed 100, number of branches/plant, and significantly higher yield than MD7 varieties. The planting spacing of 15 cm x 20 cm for leaf , plant height, number of plant harvested and yield is higher than the spacing of 20 x 20 and 15 x 15 cm in the wet and dry season in 2023. Spacing of 20 x 20 cm and 15 x 15 cm for the highest yield.