Maize Yield in Rainforest Agro-Ecology Study Reveals Key Climatic Factors

Research from the Department of Agricultural Technology in Nigeria has identified the critical climatic factors influencing maize yield in a rainforest agro-ecology. The study, published in the Turkish Journal of Agriculture: Food Science and Technology, reveals that total solar radiation is the primary driver of maize yield, with a significant correlation to grain yield data obtained from five maize varieties grown in 42 environments.

Grain yield was found to be positively correlated with solar radiation (r = 0.58*) and soil temperature (r = 0.39*), with total solar radiation being the single most important causal factor for increased yield. However, the R2 value was relatively low at 34%, indicating that other factors contribute to maize yield. The study recommends planting maize from March to early April and late July to August for the early and late season crops, respectively.

Key Takeaways:

• Total solar radiation is the primary driver of maize yield in a rainforest agro-ecology, with a significant correlation to grain yield data.
• Grain yield is positively correlated with solar radiation (r = 0.58*) and soil temperature (r = 0.39*).
• Subsequent stepwise multiple regression analysis isolated total solar radiation as the single most important causal factor for increased yield, albeit with a low R2 value of 34%.
• Other climatic factors affecting grain yield include minimum temperature, heat unit, and maximum air relative humidity, all acting indirectly through total solar radiation.
• The study recommends planting maize from March to early April and late July to August for the early and late season crops, respectively.
• The research was conducted at the Ife - Teaching and Research Farm of Obafemi Awolowo University, using five maize varieties grown in 42 environments.

Statistics:

• Grain yield data obtained from five maize varieties grown in 42 environments.
• Correlation between grain yield and solar radiation (r = 0.58*).
• Correlation between grain yield and soil temperature (r = 0.39*).
• R2 value of 34% indicates the strength of the relationship between total solar radiation and maize yield.

Sources:

• Turkish Journal of Agriculture: Food Science and Technology (Turkish Journal of Agriculture: Food Science and Technology - http://agrifoodscience.com/index.php/TURJAF/index).
• Hasan Eleroglu (publisher for Turkish Journal of Agriculture: Food Science and Technology).
• Chris Adegoke Fayose (Department of Agricultural Technology, Ekiti State Polytechnic, Isan Ekiti, Ekiti State, Nigeria).
• M. A. B. Fakorede and O. O. Jegede (additional authors for the research).
• NewsRx LLC (copyright holder of the news report).