Effect of sowing dates on growth, grain yield and forage quality of oat (Avena sativa L.) varieties
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Date
2005-09
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The present investigation entitled “EFFECT OF SOWING DATES ON GROWTH, GRAIN YIELD AND FORAGE QUALITY OF OAT (Avena sativa L.) VARIETIES” was conducted at the Instructional Dairy Farm, Nagla of the Govind Ballabh Pant University of Agriculture & Technology, Pantnagar, U.S. Nagar (Uttaranchal) during rabi season of 2004-05. The soil of experimental field was sandy loam in texture with high organic carbon (1.23%), medium in phosphorus (46.2 kg ha-1 P2O5) and potash (278.0 kg ha-1 K2O). The experiment was laid out in split plot design with four replication. Treatments consisted of four sowing dates (25th October, 8th November, 23rd November and 8th December) in main plots and four varieties (UPO-212, UPO-94, OS-6 and JHO-822) in sub-plots. Among varieties, UPO-212 produced higher grain yield (22.02 q ha-1), green forage yield (210.55 q ha-1) as well as dry matter yield (226.40 q ha-1) biological yield (219.67 q ha-1) and crude protein yield (11.47 q ha-1) than other varieties. In respect of forage quality viz crude protein content, digestibility, dry matter content, leaf : stem ratio, UPO-94 was better as compared to other vareities. In case of sowing dates, 8th November sowing produced higher grain yield, green forage yield, dry matter yield, straw yield, biological yield as well as crude protein yield and digestible dry matter yield than other sowing dates. It also had higher forage quality contents such as crude protein, leaf : stem ratio and leaf area index as compared to other sowing dates. Thus, it may be concluded that oat variety, UPO-212 might be sown on 8th November to produce maximum grain yield as well as straw yield, crude protein yield and digestible dry matter yield under tarai conditions of northern India.
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