Effect of NPK fertilizer rates on the yield and yield components of bitter leaf (&lt;i&gt;Vernonia amygdalina&lt;/i&gt; del.) in Owerri southeastern Nigeria

Ibeawuchi, II; Obilo, OP; Osugiri, II

doi:10.4314/ijonas.v2i3.36095

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“…The cassava‐based cropping system is very popular among farmers in south‐eastern Nigeria due to its advantages over sole cropping (Ayoola and Makinde, ). The system insures farmers against total crop losses (Ibeawuchi, ; Ibeawuchi et al ., ). The practice of intercropping increases yield and profitability due to higher combined returns per unit area of land (Ibeawuchi et al ., ; Amanullah et al ., ); controls erosion and weeds and allows a more even distribution of farm labour than sole cropping (Mbah et al ., ) Intercropping cassava with other crops such as legumes also encourages high soil fertility maintenance (Ibeawuchi, ).…”

Section: Introductionmentioning

confidence: 99%

Relative Profitability of Cassava‐based Mixed Cropping Systems among Various Production Scale Operators in Ogun and Oyo States Southwest Nigeria

Obayelu¹,

Afolami²,

Agbonlahor³

2013

African Development Review

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Cassava is a very important crop in Nigeria by reason of its comparative production advantage over other staples.This study estimated the relative profitability of cassava producers and determined the effects of farm inputs on the level of profit of various scales of cassava producers in Ogun and Oyo States, Nigeria. Cross-sectional data were collected from 265 cassavabased farmers using a multistage sampling technique and were analysed using normalized profit function and budgetary analysis. Results showed that cassava/cowpea enterprise had the highest net margins of N127,249.63/ha and N122,325.73/ha in Ogun and Oyo States respectively. While the use of herbicides had a positive and significant effect on the profitability of small-scale cassava farmers in both states, cassava-cuttings had a positive and significant effect on medium-scale cassava farming in both states. Similarly, labour and farm size had a positive and significant effect on large-scale cassava farming in both states. The study recommends that small and medium-scale farmers should increase the application of herbicide, large-scale cassava operators in Oyo State should increase the use of labour, while those in Ogun State should also increase the cultivated acreage of land.

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Section: Introductionmentioning

confidence: 99%