The effect of different planting densities, applied with mechanization, on plant growth and bulb yield in tulip bulb production

Due to the high demand for using planting machine in tulip bulb growing, the effect of three different planting densities (PD-1, 60;PD-2, 90;PD-3, 120 m⁻²), obtained by a bulb planting machine in tulip (Tulipa L. cv.) bulb production, on the sproutingratio, the number of bulbs obtained from unit area and a single plant, bulb weight, and the distribution of bulbs according to their size in Jan Van Nes and Royal Ten tulip varieties were investigated. By the increase of planting density, the number of sprouting and harvested bulb clusters increased. Highest number of marketable bulbs (10< cm in circumference) per unit area from Jan Van Nes and Royal Ten were obtained in PD-2. The difference between the varieties was also significant. Among the different densities, PD-2 was determined as the optimum one.