Vol. 3, Issue 5 (2018)
Response of tomato (Lycopersicon lycopersicum L.) varieties to NPK fertilizer rates in the Sudan savanna agro-ecological zone of Nigeria
Author(s): A Muhammad, BI Adeniji, IU Mohammed, MS Na-Allah, H Yusuf
Abstract: Field experiments were conducted during dry and wet seasons of 2016/2017 at the Teaching and Research Farm of Kebbi state University of Science and Technology, to study the response of some tomato varieties to rates of NPK (15:15:15) fertilizer in the study area. Treatments consisted of factorial combination of four (4) tomato varieties (Roma-VF, Tima, UC82B and Rio-grande) and four (4) NPK (15:15:15) rates (0, 300, 600 and 900 kg NPK ha-1), laid out in a completely randomized block design, with three replications. The result showed that variety Roma-VF proved the best in terms of plant height (101.87cm) at 10WAT, number of leaves (103.00), weight of fruits per plant (1.10kg), mean fruits diameter (3.25cm) and fresh fruit yield (55.41t ha-1), and similar to Tima in terms of plant height (92.64cm), number of leaves (83.92) and mean fruit weight (57.87g). Both varieties Tima and Roma-VF produced greater mean fruits weight (57.87 and 50.04g, respectively) than UC82B (38.27) and Rio-grande (30.03g). Plant height, number of leaves and leaf area index throughout the growth period; number and weight of fruits per plant and mean fruit weight were higher with NPK rates of 600 – 900 kg ha-1. Generally, the best growth and yield performance was by Roma-VF and Tima coupled with the NPK rates from 600 - 900 kg NPK ha-1. Based on the result of this study, it could be concluded that the varieties Roma-VF and Tima produced with NPK rates of 600 - 900kg ha-1gave the best tomato growth and yield, hence recommended to tomato farmers in the study area.