International Journal of Advance Agricultural Research
ISSN: 2053-1265
Vol. 10(2), pp. 32-38, March 2022

Relationships between climatic variables and corn yield of IPB Var 6 under selected rainfed conditions in the Philippines

Anecito M. Anuada

Agricultural Systems Institute-College of Agriculture and Food Science, University of the Philippines Los Baṅos, Los Baṅos, Laguna, Philippines 4031.

*To whom correspondence should be addressed. E-mail:

Received 23 January, 2022; Received in revised form 23 February, 2022; Accepted 25 February, 2022.


Climatic, Rainfall, Temperature, Relative Humidity, Corn yield.

Field studies were carried out in selected rainfed conditions in the Philippines for one cropping season. The study determined the corn yield of IPB Var 6 in various locations and investigated the relationship between the corn yield of IPB Var 6 and climate variables such as relative humidity, rainfall, and temperature. Data on climatic variables was collected by the PAGASA-DOST Climate Section from various agrometeorological stations near the experimental sites. A randomized complete block design was used for the experiments, with two replications for each location. The relationship between climatic variables and corn yield was determined using correlation analysis. In the study, it was found that corn yield has a positive correlation with precipitation. Corn yield had a negative correlation with the minimum, maximum, and mean temperatures, as well as relative humidity. Among 13 locations, IPB Var 6 planted in Pitogo, Quezon, produced the highest grain yield. The findings can be used to plan suitable adaptation strategies for farmers to use in corn production, suitable crops to suit the prevailing conditions and the adjustment of the cropping calendar due to changes in rainfall patterns.

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