Efecto del Calcio y Manganeso en el manejo preventivo de Pyricularia oryzae en el cultivo de arroz (Oryza sativa L.), en la zona de Jujan - Guayas

This experimental work was carried out in the "Javilla" Campus, owned by Mr. Rober Lagos Briones, located on the Pan-American highway, Km. 41, entering through the banana plantation "La Envidia", with the geographical coordinates of 654794 UTM Latitud South, 9782451 West longitude and a height of 8 masl The rice seed variety Iniap FL 1480 "Cristalino" was used. The treatments that were used consisted of foliar and soil fertilizers with the respective doses, such as Calcium + Manganese + Potassium in doses of 1.0 L + 1.0 L + 100 kg and 1.0 L + 1.0 L + 150 kg / ha; Calcium + Manganese 1.0 L + 1.0 L; Calcium 1.0 L; Manganese 1.0 L; Potassium 100 kg and 150 kg / ha and an absolute Witness without fertilizer application. In the present trial, the experimental design "Complete random blocks" was used, with eight treatments and three repetitions, being evaluated with the Tukey test at 95% probability. Based on the results obtained, it was concluded that the application of Calcium and Manganese obtained a positive response in the preventive management of Pyricularia oryzae in rice cultivation, in the Jujan - Guayas area; the absolute control treatment, without the application of fertilizers, obtained a higher percentage of incidence and severity of P. Oryzae; in the evaluation carried out 30 days after transplantation, a higher average percentage of chlorophyll was obtained, decreasing at the time of flowering, due to the effect of the fertilizers applied in each of the treatments studied; the agronomic characteristics of plant height, tillers and panicles / m2 and panicle length, stood out with the use of Calcium + Manganese + Potassium, in doses of 1.0 L + 1.0 L + 150 kg; in the variables grain-straw ratio and percentage of empty grains, they did not report significant differences in their averages; the agronomic efficiency of the application of Calcium and Manganese, registered the application of Calcium + Manganese + Potassium, in doses of 1.0 L + 1.0 L + 150 kg influenced the efficiency of Calcium, while Manganese was for use Manganese alone, at a dose of 1.0 L / ha and the highest weight of 1000 grains, grain yield / ha and net benefit was achieved with the use of Calcium + Manganese + Potassium, at a dose of 1.0 L + 1 , 0 L + 150 kg, with 27.7 g; 5,463.7 kg / ha and $ 535.57.

• Hovedforfatter: Mayorga Castro, Angie Nathali (author)
• Format: bachelorThesis
• Udgivet: 2020
• Fag: Arroz; Calcio; Manganeso; Foliares
• Online adgang: http://dspace.utb.edu.ec/handle/49000/7955