Yield of tomato grown under continuous-flow drip irrigation in Bauchi state of Nigeria

Mofoke, A. L. E.; Adewumi, J. K.; Babatunde, F. E.; Mudiare, O. J.; Ramalan, A.A.

doi:10.1016/j.agwat.2006.02.001

Cited by 8 publications

(1 citation statement)

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“…While examining the seed supply system for maize production in southwestern Nigeria, [ 3 ] observed that “about 39% of farmers used improved varieties for high crop yields, 24% for disease resistance and 22% for market preferences, whereas local varieties were cultivated by 37% of farmers because of market preferences and availability, 16% because of low cost and 12% because of disease resistance”. [ 4 ] demonstrated that continuous-flow drip irrigation in Bauchi state of Nigeria delivers “high crop yields especially if the crops are grown under appropriate agronomic practices that enable protraction of the growth season”. [ 5 ] demonstrated that high maize yields on sandy soils in Zimbabwe can be achieved by using mineral fertilizers.…”

Section: Introductionmentioning

confidence: 99%

Time series and power law analysis of crop yield in some east African countries

2023

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We carry out a time series analysis on the yearly crop yield data in six east African countries (Burundi, Kenya, Somalia, Tanzania, Uganda and Rwanda) using the autoregressive integrated moving average (ARIMA) model. We describe the upper tail of the yearly crop yield data in those countries using the power law, lognormal, Fréchet and stretched exponential distributions. The forecast of the fitted ARIMA models suggests that the majority of the crops in different countries will experience neither an increase nor a decrease in yield from 2019 to 2028. A few exceptional cases correspond to significant increase in the yield of sorghum and coffee in Burundi and Rwanda, respectively, and significant decrease in the yield of beans in Burundi, Kenya and Rwanda. Based on Vuong’s similarity test p–value, we find that the power law distribution captured the upper tails of yield distribution better than other distributions with just one exceptional case in Uganda, suggesting that these crops have the tendency for producing high yield. We find that only sugar cane in Somalia and sweet potato in Tanzania have the potential of producing extremely high yield. We describe the yield behaviour of these two crops as black swan, where the “rich getting richer” or the “preferential attachment” could be the underlying generating process. Other crops in Burundi, Kenya, Somalia, Tanzania, Uganda and Rwanda can only produce high but not extremely high yields. Various climate adaptation/smart strategies (use of short-duration pigeon pea varieties, use of cassava mosaic disease resistant cassava varieties, use of improved maize varieties, intensive manuring with a combination of green and poultry manure, early planting, etc) that could be adapted to increase yields in east Africa are suggested. The paper could be useful for future agricultural planning and rates calibration in crop risk insurance.

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Section: Introductionmentioning

confidence: 99%