This study provides insight into variation in nutritional composition and yield with staggered planting and growth stages. These variations offer the opportunity for the production of better quality forage oat. In the current investigation, the effect of staggered planting dates (Oct 9, Oct 24, Nov 13, Nov 26, Dec 11 and Dec 26) and growth stages (40, 50 and 60 DAS) was studied through field experiment during Rabi season (2018–19 and 2019–20) in oat. Two genotypes with differential growth potential were used, OL-10 being fast-growing with high regeneration potential and OL-11 the slow-growing single-cut variety. The optimum (Oct 24) and sub-optimum (Oct 9 and Nov 13) planting dates were characterized by higher dry matter (DM), ether extract (EE), acid detergent fibre (ADF), neutral detergent fibre (NDF) and chlorophyll content in comparison with late planting (Nov 26, Dec 11 and Dec 26). However, crude protein (CP), non-protein nitrogen (NPN) and in vitro dry matter digestibility (IVDMD) increased with delay in planting time. Meanwhile, the quality attributes except DM, ADF and NDF got declined with advancing maturity of vegetative fractions of plant. The multivariate regression model depicted 88.2% association between quality traits and digestibility. Yield and yield attributes got declined with delay in planting time during both the studied years. Overall, staggered planting and stage of harvest resulted in modifications in the nutritive value and crop yield in forage oat genotypes. OL-10 had higher yield potential and better nutritive value as compared to OL-11 genotype.

这项研究提供了对交错种植和生长阶段营养成分和产量变化的洞察。这些变化为生产更优质的草料燕麦提供了机会。在目前的调查，交错种植日期的（10月9日，10月24日，11月13日，11月26日，12月11日和12月26日）的作用和生长阶段（40，50和60个DAS）通过现场实验中研究了拉比燕麦季节（2018-19 和 2019-20）。使用了两种具有差异生长潜力的基因型，OL-10 是快速生长的具有高再生潜力的品种，而 OL-11 是生长缓慢的单切品种。最佳（10 月 24 日）和次优（10 月 9 日和 11 月 13 日）种植日期的特点是干物质 (DM)、醚提取物 (EE)、酸性洗涤纤维 (ADF)、中性洗涤纤维 (NDF) 和叶绿素含量较高与晚播（11 月 26 日、12 月 11 日和 12 月 26 日）相比的含量。然而，随着种植时间的延迟，粗蛋白（CP）、非蛋白氮（NPN）和体外干物质消化率（IVDMD）增加。同时，除DM、ADF和NDF外的品质属性随着植物营养部位成熟度的提高而下降。多元回归模型描述了品质性状和消化率之间 88.2% 的关联。在两个研究年份中，产量和产量属性都随着种植时间的延迟而下降。总体而言，交错种植和收获阶段导致饲草燕麦基因型的营养价值和作物产量发生改变。与 OL-11 基因型相比，OL-10 具有更高的产量潜力和更好的营养价值。