Response of determinate and semi-determinate soybean on dolomite liming

Abstract

This paper presents results of a study aimed to determine the effect of dolomite calcification on growth and production of the determinate and semi-determinate type of soybean (Glycine max L.). The study was designed in a 2-factor factorial experiment in a randomized block design. The first factor consisted of two growing types of soybean: variety of Baluran as a determinate type, and variety of Orba as a semi-determinate type. The second factor consisted of five levels of dolomite lime applications, namely: 0 kg ha-1, 500 kg ha-1, 1,000 kg ha-1, 1,500 kg ha-1, and 2,000 kg ha-1. The results showed that the semi-determinate soybean type of Orba variety produced the highest average plant height (49.97 cm), the highest number of branches (3.29), the highest number of pods per plant (44.95), heaviest weight of pods per plot (671.80 g), the lowest percentage of empty pods (5.60%), the heaviest weight of seeds per plot (501.87g) and the heaviest weight of seeds per hectare (1,206.40 kg). Application of 2,000 kg ha-1 dolomite lime at the age of 56 dap produced the highest plants (52.13 cm), the highest number of leaves (13.00 strands), the earliest flowering age of 50% (36 days), the highest number of productive branches (3.08), highest number of pods per plant (53.33), widest leaf canopy after flowering (45.38 cm), heaviest pod weight per plot (761.32 g), lowest percentage of empty pods (3.90%), heaviest seed weight per plot (630.12 g) and highest seed weight per hectare (1,514.71 kg). The Semi-determinate type Orba variety gave the heaviest weight of 1,000 seeds at a dose of 1,500 kg ha-1 dolomite.