EFFICIENCY OF NITROGEN-FIXING BACTERIA BRADYRHIZOBIUM SP. AND PHOSPHATE-SOLUBILIZING BACTERIA PSEUDOMONAS SP., PANTOEA SP. ON THE GROWTH OF MAIZE [ZEA MAYS L.]

Abstract

This study investigated the effects of nitrogen-fixing bacteria Bradyrhizobium sp. TTB2.1 and phosphate-solubilizing bacteria Pseudomonas sp. BKD2.1, Pseudomonas sp. TTB4.4, Pantoea sp. TTB4.1 on the growth and development of corn under field conditions. The results showed the yield in the treatments with phosphate-solubilizing bacteria Pantoea sp. TTB4.1 25.64 tons/ha (first crop) and 27.22 tons/ha (second crop), Pseudomonas sp. BKD2.1 25.71 tons/ha (first crop) and 26.98 tons/ha (second crop). Criteria of plant height, fruit length, leaf length, number of fruits per tree and chlorophyll content in leaves are better in the bacterial irrigation treatments than in the negative control. Criteria of nitrogen, soluble phosphorus, and microbial density in the soil changed before sowing and after harvest. Two strains of phosphate solubilizing bacteria Pseudomonas sp. BKD2.1 and Pantoea sp. TTB4.1 has the best effect on the growth and development of the corn.