A maior produção de milho verde foi do tratamento T5, com a maior lâmina aplicada, porém, não foi obtido o ponto máximo na produção, possivelmente devido a forma de manejo e o tipo de solo.
A simulação mostrou resultados satisfatórios apenas nos tratamentos com água aplicada em excesso e na profundidade de 30 cm.
A maior densidade de raízes foi encontrada na camada de 10 cm, sendo esta a mais importante no que diz respeito a simulação de extração de água pela planta.
Tais resultados mostram que o modelo macroscópico de Feddes não é adequado para simular tais processos nas condições do atual experimento.
A fim de se obter melhores resultados recomenda-se a utilização de modelos que considerem o sistema de compensação das raízes na extração de água do solo.
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APÊNDICE A – RECOMENDAÇÕES
Para a obtenção de resultados possivelmente mais satisfatórios na simulação do movimento de água no solo utilizando o modelo HYDRUS em trabalhos futuros, recomenda-se.
− Utilizar local com solo de textura argilosa;
− Utilizar instrumento de boa precisão na medição da umidade do solo e potencial mátrico;
− Utilizar modelos macroscópicos com sistema de compensação da extração; − Analisar de forma mais abrangente o desenvolvimento das raízes.