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- Title
Silicate fertilizer and irrigation depth in corn production.
- Authors
Dantas Júnior, Edvaldo Eloy; Garófala Chaves, Lucia Helena; Melo da Costa, Fernando Antônio; Gheyi, Hans Raj
- Abstract
Calcium-magnesium silicates improve the soil physicochemical properties and provide benefits to plant nutrition, since they are sources of silica, calcium and magnesium. The objective of this study was to evaluate the grain yield of irrigated corn fertilized with calcium-magnesium silicate. The experiment was carried out in a greenhouse in Campina Grande -- PB, Brazil, using plastic pots containing 80 kg of soil. The treatments consisted of the combination of four irrigation depths, related to water replacement of 50, 75, 100 and 125% of the crop evapotranspiration, with fertilizer levels of 0, 82, 164 and 246 g of calcium-magnesium silicate, with three replications. The experimental design was in randomized blocks, with the irrigation depths distributed in bands while the silicon levels constituted the subplots. Corn yield was influenced by calcium-magnesium silicate and by irrigation depth, obtaining the greatest grain yield with the dose of 164 g pot-1 irrigated at the highest water level. The water-use efficiency of in corn production tended to decrease when the irrigation depth was increased. The best water-use efficiency was observed when the irrigation level was between 87 and 174 mm, and the dose of silicate was 164 g pot-1.
- Subjects
FERTILIZER research; IRRIGATION research; CORN research; DIOPSIDE; WATER efficiency
- Publication
Revista Ceres, 2013, Vol 60, Issue 4, p563
- ISSN
0034-737X
- Publication type
Article
- DOI
10.1590/s0034-737x2013000400016