Análise do comportamento morfofisiológico da cana-de-açúcar irrigada nos tabuleiros costeiros paraibanos.

Abstract

The cultivation of sugar cane is prominent in the Brazilian agricultural scenery. It is cultivated in several environments with association of climate and soil. The study of the behaviour of different cultures in each environment of production helps to increase the economical exploration of the culture. The aim of the present study was to investigate the growth of the cultivation when submitted to different water depths, observing the growth variation in two varieties of cultivation, the SP-791911 and the SP-716949. The study was conducted in order to evaluate specimen of the cultivations picked on days 218, 246, 288, 320 and 390 after the planting. The growth behaviour of the straw and leaves was specifically determined, and also was verified the cultivation productivity by the technological parameters (BRIX, POL, PZA, FIBRA, PCC). The treatments were conducted with two varieties of cultures submitted to three different water depths, with four repetitions, in the Miriri factory, Capim district, Paraíba. The studied cultures of sugar cane was found to show varied growth behaviour, maturation and productive in function of the applied depth. The results reported emphasize the paper of the water depth in the optimization of this cultivation production and trade.