Interactive effect of planting dates and development stages on digestibility, qualitative traits and yield of forage oat (Avena sativa L.) genotypes

Kaur, Aanchaldeep and Goyal, Meenakshi and Kaur, Maninder and Mahal, Amrit Kaur (2022) Interactive effect of planting dates and development stages on digestibility, qualitative traits and yield of forage oat (Avena sativa L.) genotypes. CEREAL RESEARCH COMMUNICATIONS, 50 (4). pp. 1237-1247. ISSN 0133-3720 (print), 1788-9170 (online)

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Abstract

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.

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