Calibration and Simulation of the CERES-Sorghum and CERES-Maize Models for Crops in the Central-West Region of Paraná State

Abstract

Simulation models have been widely used to generate yield data by forecasting climate variables and changes in growing seasons. The aim of this study was to calibrate genetic coefficients and simulate growth, development and yield in maize and sorghum crops based on historical meteorological data for the municipality of Juranda (2007 to 2013), in the central-west region of Paraná State, Brazil. Treatments were established based on three planting dates in two growing seasons for a group of super early maturity maize hybrids (DKB 330 Pro), and two groups of sorghum hybrids, the first a super early variety (ADV 123) and the second with a normal cycle (1G282). The variables assessed were number of days from planting to flowering, leaf area index (LAI), and 1000 seed weight and yield. Statistical coefficients were used to evaluate calibration accuracy. The results demonstrated that the models were highly efficient at simulating crop cycles, yield and leaf area index, with agreement indices and modeling efficiency values above 0.90. The results indicated that the CERES-Maize and CERES-Sorghum models generated satisfactory and comparative simulations of maize and sorghum yield for the study area on different planting dates.

Developing Genetic Coefficients of Sorghum Cultivars Using Gencalc and Glue Genetic Coefficient Estimators in DSSAT

“…The rsquare value of 0.74 and 0.76 was observed for CO 30 and K 12 varieties, respectively. This finding was corroborated with the findings of Vieira et al [14] and Tesfaye et al [15] who reported r square (r 2…”

Aplicação de Resíduos da Indústria Sucroalcooleira em Solo como Forma de Mitigar Impactos Ambientais

“…Soltangheisi et al (2019), avaliaram o efeito da vinhaça sobre a adsorção de fósforo em amostras da fração argila de dois solos Latossolo Vermelho e Gleissolo Melânico, onde puderam concluir que o tratamento da fração argila com vinhaça reduziu a adsorção de P, possivelmente devido ao bloqueio dos sítios de adsorção de P pelos compostos orgânicos da vinhaça e, também, pelo aumento da carga líquida negativa da fração argila. Vieira et al (2019) utilizando a cultura do sorgo forrageiro adubado com resíduo tratado originário de fecularia em lisímetros instalados em campo, observaram redução do teor de fósforo disponível no solo com a elevação das doses de manipueira, onde o menor teor de P (1,63 mg dm -3 ) foi encontrado na maior dose de manipueira (900 m 3 ha -1 ).…”