特夫草增加了得克萨斯州滚动平原的夏季饲料供应量

IF 1.3 Q3 AGRONOMY
Emi Kimura, Jonathan Ramirez
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引用次数: 0

摘要

特夫草(Eragrostis tef (Zucc.) Trotter)因其耐旱性和快速生长习性,已在美国广受欢迎,成为牲畜夏季的应急饲料。由于干旱造成夏季饲草短缺,德克萨斯滚动平原的种植者将受益于替代饲草。然而,在美国进行的茶草研究中,由于氮和可用水量的不同,茶草的产量和营养价值存在很大差异。这项研究的目的是评估得克萨斯州滚动平原在灌溉和旱地条件下,两种氮肥施用量和施用时间下的柚木饲料产量和营养价值。氮肥处理包括在播种时一次性施用 50 或 100 磅 a-1 的氮肥,以及在播种时和第一次收获后分次施用 50 或 100 磅 a-1 的氮肥。在灌溉试验(5286 磅 a-1)中,氮肥施用量和施用方法没有发现差异。在旱地试验中,分次施用 100 磅 a-1 的总产量最高(3096 磅 a-1),但在第一次收割时,100 磅 N a-1 的产量与 50 磅 N a-1 相比没有优势。牧草营养价值与该地区使用的暖季型牧草品种相似。这项研究表明,非洲茶可以作为该地区的替代饲草品种。未来的研究将包括种植日期、施氮时间、割台高度以及这些因素对茶草产量和营养价值的交互作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Teff grass increases summer forage availability in the Rolling Plains of Texas

Teff [Eragrostis tef (Zucc.) Trotter] grass has gained popularity in the United States as an emergency summer forage for livestock due to its drought tolerance and rapid growth habit. An alternative forage would benefit Texas Rolling Plains growers due to the summer forage shortage caused by drought conditions. However, among the teff research conducted in the United States, there is great variability in the forage yields and nutritive values depending on the amount of nitrogen and available water. The objective of the study was to evaluate forage productivity and nutritive value of teff in the Texas Rolling Plains under irrigated and dryland conditions with two nitrogen rates and application timings. Nitrogen fertilizer treatments included single applications of either 50 or 100 lb a−1 applied at planting and a split application of either 50 or 100 lb a−1 applied both at planting and after the first harvest. No differences were observed among nitrogen rates and application methods in the irrigated trial (5286 lb a−1). The split application of 100 lb a−1 produced the greatest total yield in the dryland trial (3096 lb a−1) with no yield advantage of 100 lb N a−1 over 50 lb N a−1 at the first cutting. Forage nutritive values were similar to the warm-season forage species utilized in the region. This study showed that teff can be an alternative forage species in the region. Future research will include planting dates, nitrogen application timing, cutting height, and the interaction of these factors on yield and nutritive values of teff.

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来源期刊
Agrosystems, Geosciences & Environment
Agrosystems, Geosciences & Environment Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
2.60
自引率
0.00%
发文量
80
审稿时长
24 weeks
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