Browsing by Author "Silva Araujo, Claudio Damian"

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    Biofumigación con brassicaceas para el control de nematodos en el cultivo de papa
    (2018) Silva Araujo, Claudio Damian; Curay, Segundo
    The present research work was carried out with the objective of determining the effect of the four types of brassicaceae for the control of nematodes in the potato crop, the same that was carried out on the property of Mrs. Targelia Silva, in the Province of Tungurahua Cantón Quero, in the Community of Gualcanga San Nicolás. According to the Global Positioning System (GPS) is at the altitude of 3 309 meters above sea level and at the geographic coordinates: latitude 01 ° 22'48 "S and longitude 78 ° 36'34" W”. The experimental design of randomized complete blocks with a factorial arrangement of 4 x 2 + 1 and three repetitions was used. In addition, the analysis of variance (ADEVA) was performed, according to the experimental design, Tukey significance tests were performed at 5%. . The variables evaluated were: number of nematodes at 0 days, number of dead nematodes at 40, 80, and 120 days, root volume at 30, 60, and 90 days of potato cultivation, height of the plant at 30 -60 -90 days of potato cultivation, number of tubers per plant, number of first tubers and identification of nematodes. The best results in the parameters measured were obtained with mustard brassicaceae (Sinapis, alba), with a dose of 9kg / m², with averages of 23.33%, 13.33%, 20.00%, in the mortality percentage of the nematodes at 40, 80 and 120 days. In the root volume of the potato crop at 30 and 60 days did not present statistically significant differences, at 90 days the brassicacea white turnip (Brassica rapa) was the one that recorded the best root volume, with an average of 70.00 cc. Plant height presented the best results with the brassicaceae turnip lila (Brassica rapa), with 33.33cm, 56.33cm and 75cm stockings at 30, 60 and 90 days respectively. The number of tubers per plant, the best result is presented with yellow turnip (Brassica rapa), with an average of 20.67. Number of first tubers show the best results the turnip lila (Brassica rapa) and the yellow turnip (Brassica rapa), with averages of 7.00 and 6.33, probably due to the fact that the substances present in the soil of the crop decreased the percentage of pathogens which had a positive impact on its development and the nematode with the greatest presence in the potato crop was Globodera sp, which could be identified in the soil samples.