International Journal of Agriculture Sustainable Farming  |  ISSN (Online): 3107-6602  |  Double-Blind Peer Review  |  Open Access  |  CC BY 4.0

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     2026:2/3

International Journal of Agriculture Sustainable Farming

ISSN: (Print) | 3107-6602 (Online) | Impact Factor: 8.20 | Open Access

Optimization of Transplanting Densities in a Sweet Potato and Tomato Intercrop for Enhanced Land Productivity

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Abstract

This study evaluated the intercrop performance of improved sweet potato variety (UMOSPO1) with tomato (premium 150) under different organic fertilizer rates. UMOSPO3 was intercropped with tomato at different population densities (T2a-100% sweet potato, T2b-100% sweetpotato+100% tomato, T2c-100% sweetpotato+50% tomato, T2d-50% sweetpotato+100% tomato, T2e-50% sweetpotato+50% tomato), F2f – 100% tomato and fertilized with organic fertilizer at 0, 15, 30, and 45 mL in 2020 and 2021 planting seasons as 6x4 factorial arranged in a randomized complete block design and replicated three times. Data were collected on the vine length (VL), fresh tuber weight (FTW), and Land Equivalent Ratio (LER), and analysed using ANOVA and means were separated using least significant differences at 5% level of significance. the VL and FTW ranged from 102.37±2.85 (0 mL) to 144.93±2.85 (45 mL) and 8.18±0.31 g (0 mL) to 13.48±0.31 g (30 mL), and from 95.08±3.19 (T2b) to 160.25±3.19 (T2a) and 8.12±0.35 g (T2b) to 14.22±0.35 g (T2a), and the LER ranged from 1.30 (T2b) to 1.59 (T2c). The interaction between nutrients and cultivars was significant for the FTW. Organic fertilizer rate of 45 mL was best for the agronomic parameters, while 35 mL was optimal for tuber production. However, 100% sweetpotato+50% tomato had 159% higher productivity to sole crop.

How to Cite This Article

Ehigie O H, Emuh F N, Ossai C O (2026). Optimization of Transplanting Densities in a Sweet Potato and Tomato Intercrop for Enhanced Land Productivity . International Journal of Agriculture Sustainable Farming (IJASF), 2(4), 01-11. DOI: https://doi.org/10.54660/IJASF.2026.2.4.01-11

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