Effect of harvest time on agronomic characteristic of cassava landraces
DOI:
https://doi.org/10.6008/CBPC2179-6858.2020.003.0003Keywords:
Agronomic descripts, Manihot esculenta, Aerial part, Productivity, Tuberous rootsAbstract
The cassava is a popular food in Brazil; the crop is especially important for familiar agriculture. The tuberous roots have abundant carbohydrates, and they can be harvest over a long period, depending on landraces and growing region. Then, it is necessary to define the best harvest time, aiming at increasing productivity and maxing the agriculture area. Here, our objective was evaluated the effect of four harvest time (six, eight, ten, and twelve months after planting) on agronomic characteristics of four cassava landraces (Cacau branca, Cacau roxa, Cacau amarela and Mandioca pão) under the climatic conditions edaphoclimatic in Alta Floresta, Mato Grosso state, Brazil. The experimental design was in randomized block with four replications, following plot scheme (landraces) and subplots (harvest time). For each harvest time, we evaluated following agronomic descripts: aerial part productivity, tuberous root productivity, harvest index, number of roots per plant, length and average diameter of the roots. Date were used to analysis of variance and adjustment of the polynomial regression model. Our results presented that the harvest time influenced the agronomic characteristics of the cassava landraces. The landraces Cacau roxa and Cacau Amarela presented greater productivity of roots at eight and ten months after planting, respectively. Cacau branca and Mandioca Pão were more productive at twelve months, suggesting that the permanence of plants in the field increases productivity, root diameter and harvest index. Therefore, it is good options for the family farmer from Mato Grosso.
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