Efeito da irrigação e época de corte na produção e qualidade nutritiva da cunhã (Clitoria ternatea L.).

Abstract

The objectives of the present study were to determine the effects of different levels of irrigation and cutting age on the yield as well as on the nutritive value of "Cunha" (CIitoria ternatea,L. ). The work was conducted at Sacada farm, 18 km from Sume- Pb, in the Cariris Velhos region, during the period of august 14, to november 29. Five irrigations regimes and five cutting ages were utilized to observe the effects on green matter and dry matter production, crude proteins, crude fiber, ether extract, organic matter and ash. It was observed a superiority of the two larger water levels in relation to the other three levels for green and dry matter production. It was not observed water levels influence on crud protein, crude fiber and ash, but it was observed a significant negative correlation for ether extract and a significant, positive correlation for organic matter. With respect to cutting ages, it was estimated the largest green and dry matter yield when the cut was done 90 days after sowing. It was evidenced the effect of the cutting age over crude protein and the best percentage was for cuts realized 45 days after sowing. With respect to crude fiber it was not verified any significant effect as for ether extract it was estimated the lowest yield 75 days after sowing. With regards to organic matter and ash there was an influence of cutting age over yield and was estimated the largest 45 days after sowing. In general there were some interactions between applied water levels and cutting ages. It was calculated the water consumptive use by for age for each water levels on period of 15 days each. Also cost analysis x income was made for crude protein yields.