Rhizosphere temperature in maize: influence of moisture status
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Abstract
Soil temperature is a main factor for germination, emergence, and growth of plants. Local interest in the soil temperature-moisture relationship is found in the recent popularization of complementary irrigation for corn production. The present paper reports results of a field experiment in which air temperature (0.50 m) and soil temperature (-0.05 m and -0.25 m) were recorded during 60 days from seedling emergence. Discussion is based on two levels of soil moisture status. Differences are detected in maximum, medium, and minimum temperatures among irrigated and unirrigated plots. Maximum and minimum soil temperatures at the superficial level (-0.05 m) differed by 1.53 °C and 1.57 °C in both treatments. Maximum and minimum air temperatures were lower in irrigated plots. Hypothetic influence of soil moisture status over soil and near-atmosphere temperatures is confirmed. With these experimental conditions, we don't find phenology effects on maize plants.
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