Agronomic Comparison and In Vitro Dry Matter Digestibility of Eight Sorghums at Two Locations in Puerto Rico.
Agronomic Comparison and In Vitro Dry Matter Digestibility of Eight Sorghums at Two Locations in Puerto Rico.
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波多黎各两个地点八种高粱的农艺比较和体外干物质消化率。
DOI：
10.46429/jaupr.v70i1.7073
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
F. Miller
中科院分区：
文献类型：
--
作者：
S. Torres;A. Sotomayor;F. Miller
8种高粱（Sorghum bicolor L.）Moench）基因型在波多黎各的两个地点连续四次60天的扦插期间进行评价。所研究的8个性状（绿色产草量、干物质和粗蛋白含量和产量、离体干物质消化率、株高和叶面积）在基因型和插条间差异显著。除干物质含量和体外干物质消化率（IVDMD）外，大多数性状的位置×基因型互作均达到显著水平。在这两个地点，240天内最好的干饲料生产者是ATx 623 x Rio和ATx 623 x TMTx 430，在伊萨贝拉分别为34和30吨/公顷;在马亚圭斯分别为20和19吨/公顷。杂种的平均IVDMD和粗蛋白质值分别为58和10.2%。Rio的干草产量最低，但IVDMD值最高：62%。叶面积与三个产量指标均呈高度正相关。粗略估计，在波多黎各种植饲料高粱生产牛奶的净利润为1 211美元/公顷。
Eight sorghum ( Sorghum bicolor L. Moench) genotypes were evaluated during four consecutive 60-day cuttings at two locations in Puerto Rico. Differences between genotypes and cuttings were significant for the eight traits studied (green forage yield, content and yield of dry matter and crude protein, in vitro dry matter digestibility, plant height and leaf area). The location x genotype interaction was significant for most traits except dry matter content and in vitro dry matter digestibility (IVDMD). At both locations the best dry forage producers over the 240-day period were ATx623 x Rio and ATx623 x TMTx430 with 34 and 30 t/ha, respectively, al Isabela; and 20 and 19 t/ha, respectively at Mayaguez. Average IVDMD and crude protein values of hybrids were 58 and 10.2%, respectively. Rio was lowest in dry forage yield but highest in IVDMD value: 62%. Leaf area had a high positive correlation with the three yield criteria. A rough estimate of net profit from growing forage sorghum in Puerto Rico for milk production is $1,211/ha.