The influence of five medicinal plant dried leaf powder extracts i.e. cinnamon,
lupine, garlic, onion and wormwood; and yeast extract singly or mixed with yeast
extract as foliar spraying applications in comparison with oxamyl on M. incognita
infecting broadbean cv. Sakha 1 plant growth response and nematode criteria under
greenhouse conditions (19±3ºC). Results indicated that all tested applications
significantly improved broadbean plant growth characters and reduced nematode
parameters as well. Moreover, all tested concomitant treatments significantly gave
better results than single one did. Of the single treatments, yeast extract showed
the maximum values in ameliorating plant length, total plant fresh weight and shoot
dry weight followed by garlic, onion and then cinnamon, whereas lupine plant
powder extract gave the minimum values for the same parameters, respectively.
Meanwhile, plant received yeast plus garlic achieved the maximum results in
ameliorating broadbean growth parameters followed by yeast plus onion extracts,
respectively. Moreover, yeast extract overwhelmed other single treatments in
suppressing nematode population (74.7%), whereas lupine extract showed the least
value of this parameters (36.9%), respectively. Meanwhile, pots received yeast
mixed with garlic overwhelmed other integrated treatments in this respect. Chemical
analysis of N, P, K, total phenol and total chlorophyll in this study was recorded and
discused.