for an exposure time of 30s corresponding to mean surface grain temperature around of 55 and 58oC, respectively. For cowpea seeds, the same trend was found for the mortality of adults and the reduction of progeny of the life stages of C. maculatus and there were higher at higher power levels and exposure time as obtained with the fababean seeds. While, the adult mortality and reduction of their progeny on cowpea seeds was slightly higher than that with fababean seeds. Among the life stages of C. maculatus in pulses, eggs were the most susceptible to the microwave energy followed by larval, adults and the least susceptible was the pupal. This may be due to the eggs being more directly exposed to microwave heating.While, larval and pupal stages being internal to the pulses seeds, were more insulated from the heat, experiencing a shorter exposure to lethal temperatures.These results are in agreement
Exposre times, s:
20s
30s
40s
0
20
40
60
80
100
control
200
400
600
800
Egg hatchability, %
Fababean
0
20
40
60
80
100
Control
200
400
600
800
Reduction of progeny, %
Fababean
0
20
40
60
80
100
Control
200
400
600
800
Egg hatchability, %
Power levels, W
Cowpea
0
20
40
60
80
100
Control
200
400
600
800
Reduction of progeny, %
Power levels, W
Cowpea
for an exposure time of 30s corresponding to mean surface grain temperature around of 55 and 58oC, respectively. For cowpea seeds, the same trend was found for the mortality of adults and the reduction of progeny of the life stages of C. maculatus and there were higher at higher power levels and exposure time as obtained with the fababean seeds. While, the adult mortality and reduction of their progeny on cowpea seeds was slightly higher than that with fababean seeds. Among the life stages of C. maculatus in pulses, eggs were the most susceptible to the microwave energy followed by larval, adults and the least susceptible was the pupal. This may be due to the eggs being more directly exposed to microwave heating.While, larval and pupal stages being internal to the pulses seeds, were more insulated from the heat, experiencing a shorter exposure to lethal temperatures.These results are in agreement
Exposre times, s:
20s
30s
40s
0
20
40
60
80
100
control
200
400
600
800
Egg hatchability, %
Fababean
0
20
40
60
80
100
Control
200
400
600
800
Reduction of progeny, %
Fababean
0
20
40
60
80
100
Control
200
400
600
800
Egg hatchability, %
Power levels, W
Cowpea
0
20
40
60
80
100
Control
200
400
600
800
Reduction of progeny, %
Power levels, W
Cowpea
การแปล กรุณารอสักครู่..