Thông tin chung
  English
  Đề tài NC khoa học
  Bài báo, báo cáo khoa học
  Hướng dẫn Sau đại học
  Sách và giáo trình
  Các học phần và môn giảng dạy
  Giải thưởng khoa học, Phát minh, sáng chế
  Khen thưởng
  Thông tin khác
  Tài liệu tham khảo
  Hiệu chỉnh
 
Số người truy cập: 107,148,274

 Effect of plantain content in ryegrass-based dairy pastures on nitrate leaching and key components of the nitrogen cycle.
Tác giả hoặc Nhóm tác giả: Nguyen, T. T., S Navarrete, DJ Horne, DJ Donaghy, PD Kemp
Nơi đăng: Adaptive Strategies for Future Farming. Occasional Report No. 34.; Số: 34;Từ->đến trang: 1-7;Năm: 2022
Lĩnh vực: Nông lâm ngư; Loại: Báo cáo; Thể loại: Quốc tế
TÓM TẮT
ABSTRACT
The objective of this study was to quantify the effect of plantain inclusion and plantain content in ryegrass-based pastures on nitrate leaching and key components of the nitrogen (N) cycle of a pastoral dairy system. Four pasture treatments: perennial ryegrass-white clover (RGWC), RGWC + low plantain rate (L), RGWC + medium plantain (M), and RGWC + high plantain (H) were established in a randomized complete block design with five replicate plots of 800 m2 each. The measurements of nitrate leaching, urinary N (UN) excretion, faecal N excretion, clover-fixed N, and N uptake by pastures were conducted over two drainage seasons from January 2020 to December 2021. During this period, the pastures were rotationally grazed with lactating cows under normal grazing management with nine grazing rotations per year. Nitrate leaching was estimated from drainage volume and N concentration in drainage water that were recorded and collected from an isolated drainage system set up in each plot. Nitrogen excretion from cow urine and dung was estimated from N concentration in urine and faecal spot samples. Clover-fixed N and N uptake by pastures were estimated from clover content in the sward, herbage dry matter (DM) yield, and N content in the herbage. The results showed that the inclusion of plantain into pastures reduced nitrate leaching by 40% compared to the standard RGWC pasture. This reduction in N leaching was greater with an increase in plantain content, and resulted from decreased UN excretion and increased N uptake by pastures.
© Đại học Đà Nẵng
 
 
Địa chỉ: 41 Lê Duẩn Thành phố Đà Nẵng
Điện thoại: (84) 0236 3822 041 ; Email: dhdn@ac.udn.vn