Effect of Plant Density and Biofertilization Treatment in Some Productivity and Quality Indicators of Two Peanut Varieties in Tartous, Syria

The research was carried out during the 2022 agricultural season at Zahid Water and Irrigation Research Station - Center for Scientific Agricultural Research in Tartous-Syria .The research aimed to study the effect of agricultural density (20 × 50 and 30 × 50 cm) and spraying with EM1 biofertilizer concentrations (0, 3 and 6 ml/L) in some productivity (number of pods/plants, 100 seed weight, and pod yield) and quality (protein and oil content (%)) indicators of two peanut varieties (Soori 2, Giza 6). The experiment was designed as a spilt-split plot design with three replications per treatment; where plant density the main plots, the biofertilization treatments the sub-plots, and the varieties the sub-sub-plots. The results showed that there was a significant effect (P<0.05) of plant density on all the studied traits. The plant density (30 × 50 cm) achieved the highest 100 seed wiegh (115.81 g), the number of pods (53.70 pod/plant), and the protein (27.16 %) and oil (43.58 %) contents, While the plant density (20 × 50 cm) achieved the highest pod yield per hectare(4285.37kg/ha). The results indicated a significant effect (P<0.05) of the biofertilization on all the studied traits; where the rate of 6 ml/L showed the highest number of pods (55.20 pods/plant), the 100seed weight (110.91 g), pod yield (4342.08 kg/ha) and the protein (27.85 %) and oil (44.91 %) contents. The Giza 6 variety was significantly superior (P<0.05) to Soori 2 in all the traits studied, the interaction between the biofertilization and plant density and variety had also a significant effect (P<0.05) on all studied traits.