Yield and forage quality of oats varieties under rainfed conditions in Zacatecas, Mexico
Yield, quality and yield components of six varieties of oat for forage were evaluated in Zacatecas. Experiments were established on July 2011 and 2012 at Monte Escobedo. A complete randomized block experimental design replicated three times was used. Oat seeding density was 120 kg ha-1 and NPK fertilizer application rate of 60-40-00. Harvest was at milky-dough stage of maturity. In both years, 2011 and 2012, Saia stood out among cultivars ( P<0.05) in forage yield with 3.7 and 5.6 t DM ha-1, plant height with 119 and 120 cm, and with respect to yield components accumulated the larger proportion of leaf and stem (P<0.05). Karma stood out in the proportion of spike with 42 and 49 % (P<0.05) in 2011 and 2012, respectively. Results of crude protein were similar (P>0.05) among varieties with a range of 10.6 to 13.8 %. On two years of study Karma showed the best nutritional characteristics: low accumulation of neutral detergent fiber (51 %) and acid detergent fiber (33.4 and 35.3 %), high values of digestible nutrients (54 and 58 %), dry matter digestibility (60 and 62 %), forage relative value (110 and 113) and lactation net energy (1.4 y 1.34 Mcal/kg; P<0.05). Dry forage yield was positively correlated to plant height (r=0.701), days from sowing to harvest (r=0.685) and stem proportion (r=0.629), and negatively correlated to spike proportion (r=-0.629). In relation to the nutritiona l quality, Karma had the best forage value. Saia is a good alternative to increase forage yield per hectare.
| Main Authors: | , , , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias
2014
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| Online Access: | https://cienciaspecuarias.inifap.gob.mx/index.php/Pecuarias/article/view/3220 |
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