Evaluación de sustratos alternativos a base de cascarilla de arroz y compost en plántulas de pimiento (Capsicum annuum L.)

Abstract

Ambato canton, Tungurahua province, with a South latitude of 07.07 '60', West length 78º 36 '00 "and a height of 2696 msnm; in order to, determine the most efficient substrate (100% 1rice husk S1, 50% rice husk + 50% compost S2, 100% compost S3, 2commercial peat Pinstrub T, in the growth of capsicum seedlings (Capsicum annum L.), to evaluate the physical-chemical characteristics of the substrates, and to determine the economic efficiency of the treatments. The treatments were four, completely randomized block design (DBCA) was used, with four replicates. The analysis of variance (ANOVA) and the Tukey tests were performed at 5%, to differentiate between treatments. The economic analysis was performed using the methodology of economic cost (RBC). The best results were achieved with the use of the rooting substrate made up of 50% rice husk + 50% compost (S2), the highest emergency percentage (97,03%), main growth at the height of the seedling, both at 15 days (5,52 cm), at 30 days (7,45 cm) and at 45 days (9,54 cm) from sowing. The number of leaves per plaice was higher, both at 15 days (3,83 leaves), at 30 days (4,71 leaves) and at 45 days (5,78 leaves). It also observed the highest root system volume (2,44 cc) and the best root length growth (8,41 cm), consecutively reporting the highest percentage of survival (96,15%). From the economic analysis it is concluded that the treatment consisting of 50% of rice husk + 50% of compost (S2), reached the highest cost benefit ratio of 0.27, being the most profitable treatment