Response of common bean (Phaseolus vulgaris L.) to lime and TSP fertilizer under acid soil

Abstract

This study was design to investigate responses of four common bean (Polpole and Pantarkin, Deme and Nasir) varieties to four combinations of soil acidity treatments: lime and triple supper phosphate (TSP) fertilizer (+Lime, +TSP, +Lime + TSP, control) by using factorial randomized complete block design with sixteen treatments and three replications. The results of ANOVA showed statistically significant (p < 0.05) differences in interactions of common bean varieties and soil amendments, except shoot fresh weight. The highest root fresh and dry matters weight were obtained from Pantarkin (18.12 g) and Polpole (2.70 g) with interaction of the plot treated with lime and TSP fertilizer, respectively. The highest Leaf area index (6.50 and 5.17), yield (3.84 and 3.33 t ha−1), and hundred seed weight (51.21 and 18.46 g) recorded from Deme and Polpole varieties under buffered plots by lime and TSP fertilizers. The highest phosphorus use efficiency recorded from Deme (0.69) variety. The observed responses indicated improvements of acidity problems through buffering materials (lime) and common bean varieties such as Polpole and Deme which showed better tolerance than Pantarkin and Nasir varieties. These results demonstrate the importance of varietal responses and soil amendments as form of nutrients and buffering acidity for common bean production improvements in acid soil.