Response of tomato cultivars differing in growth habit to nitrogen and phosphorus fertilizers and spacing on vertisol in Ethiopia

Abstract

cropping seasons to investigate the response of tomato cultivars varying in growth habit to rates of Nitrogen (N) and Phosphorus (P) fertilizers and plant spacing. The treatment consisted of factorial combination of two cultivars (Margelobe and Melka shola), three NP fertilizers rates (50 kg N + 60 kg P 2 O 5 /ha, 80 kg N + 90 kg P 2 O 5 /ha and 110 kg N + 120 kg P 2 O 5 /ha) and three spacing (100 cm x 30 cm, 80 cm x 30 cm and 60 cm x 45 cm) arranged in a Randomized Complete Block Design. Results revealed that fertilizer rates and spacing significantly affected the total and marketable fruit yields as well as % marketable fruit yield. Similarly, plant vigor (plant height), number of fruits per cluster and 10 fruit weight were significantly influenced by all of the main factors. Besides the main factors effect, fertilizer rate*spacing and cultivar*spacing interaction effects were also observed on % marketable fruit yield and 10 fruit weight, respectively

Effect of row spacing and nitrogen levels on the growth and yield of tomato under walk-in polythene tunnel condition

“…Application of higher NP fertilizers rates gave greater average tomato fruit weight reported by Sharma et al [9].Highest row spacing results maximum fruit weight instead of closed row spacing in tomato reported by Ali [34]. Balemi [35] stated that higher nitrogen application gave greater fruit weight per plant in tomato. In contrast row spacing had no effect on fruit weight of tomato were reported by Jia and Rashid [36, 37] stated that fertilizer rates had no effect on average fruit of tomato.…”

“…Fruit weight per picking plot -1 was highly influenced by nitrogen levels and row spacing. Balemi [35]reported that, the highest number of fruits picking -1 plot -1 was influenced by high nitrogen and phosphorus rate.…”

Review on Disease Management Practice of Tomato Wilt Caused Fusarium oxysporum in Case of Ethiopia

“…Farmers get lower yield mainly due to diseases, pests and sub-optimal fertilization [14]. Small-scale farmers, commercial growers and state farm enterprises grow the crop for its fruits in difference regions.…”

Yield of determinate tomato cultivars grown in a closed hydroponic system as affected by plant spacing

“…Manipulation of plant spacing is an important means to increase light interception and its efficient use in tomato production (Feng et al, 2010). Tomato yield has been reported to be dependent on the number of plants accommodated per unit area (Mehla et al, 2000;Belemi, 2008;Maboko et al, 2011a). Castodi et al (2012) reported that an increase in plant density resulted in a reduction in mean fresh weight of the plants and increased productivity to a certain extent.…”

“…Castodi et al (2012) reported that an increase in plant density resulted in a reduction in mean fresh weight of the plants and increased productivity to a certain extent. Yield of fresh market and processing tomatoes was reported to be greatly influenced by plant spacing (Belemi, 2008). Mehla et al (2000) also reported the importance of plant spacing on yield and quality parameters in tomato crop.…”