Effect of green manure and sources of phosphorus on the morphology and yield of maize plants

Renan Caldas Umburanas, Jackson Kawakami, Vlandiney Eschemback, Ires Cristina Ribeiro Oliari

Abstract


The aim of this study was to evaluate the behavior of the maize crop in succession to different species of green manures, with different sources of phosphorus and their interaction. A completely randomized block in a split plot design was used, with three main treatments and seven secondary treatments, with three replications. The treatments consisted of three sources of phosphorus (plots) and six species of green manures (subplots). It was used maize plants of cultivar Premium Flex®. It were evaluated plant height, leaf number, stem diameter, leaf area index, leaf and stem dry weight,  specific leaf area, ear number, mass of one hundred grains, stand and yield. There was no interaction effect on all traits. However, the dry weight of stem and seed yield showed significant difference between the sources of phosphorus, with positive results for both sources of phosphorus in relation to the control. This suggests that the shoot dry weight is responsive to the presence of phosphorus. It was observed that the phosphate rock has potential to achieve crop yield similar to that obtained with superphosphate.


Keywords


Zea mays L.; phosphorus fertilization; leaf area index

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References


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DOI: https://doi.org/10.5777/paet.v6i2.2120