Agrotechnology

Defining seasonal and fertilizer influences on bromatological aspects of Brachiaria brizantha cv. Xaraes with two cutting heights

5^th International Conference on Agriculture & Horticulture

June 27-29, 2016 Cape Town, South Africa

Syeda Maryam Hussain, Valdo Rodrigues Herling and Paulo H Mazza Rodrigues

University of Sao Paulo, Brazil

Posters & Accepted Abstracts: Agrotechnol

Abstract:

The study was conducted at FZEA-USP; for defining the seasonal influences (summer, autumn, winter and spring) in interaction with nitrogen doses (0, 150, 300 and 450 kg/ha) and cutting heights (15 and 30 cm) for analyzing the bromatological parameters of Brachiaria brizantha cv. Xaraes. The experimental arrangement was 4 �? 2 factorial in CRBD with repeated mesaures of seasons. Generally, no significant results were obtained by the H*N interaction during all seasons for the parameters of dry matter (DM), acid detergent fiber (ADF), neutral detergent fiber (NDF), in-vitro dry matter digestibility (IVDMD) and in-vitro organic matter digestibility (IVOMD). All the said attributes declines linearly with increasing N doses. The lower reported DM% was obtained in winter (90.24) and highest in autumn (91.32). Crude protein (CP) was significantly (P>0.05) effected by the N-H interaction, and at heights of 15 and 30 cm in winter (8.72 and 7.0) and autumn (6.49 and 5.46) CP decreases significantly. The lower CP% was at 0 kg N (4.78) and highest at 450 kg N (8.55). ADF were significantly effective by heights and nitrogen availability in winter only. The lower ADF production occurred at 450 kg N (35.98%) and highest in summer (0 kg N (42.36%). While lower NDF production (73.73) occurred at highest dose of N and highest (75.60) at lower dose of N. The lower in-vitro indexes for DMD and OMD were noted in spring (66.84 and 53.93) and higher were shown in winter (70.44) and autumn (59.35) respectively. Seasonality and nitrogen showed significant (P>0.05) impact on the Xaraes nutritional value by improving the CP and reducing the (NDF) and acid detergent fiber (ADF). Nitrogen application showed positive results till increasing 300 kg/ha dose.

Biography :

Syeda Maryam Hussain is pursuing her PhD in Animal Production and Quality from University of Sao Paulo, Brazil. She has published three articles and 6 resumes.

Email: syeda@usp.br