Yield of oat forage Chihuahua variety
DOI:
https://doi.org/10.29312/remexca.v0i24.2376Keywords:
Avena sativa L., intercepted radiation, morphological compositionAbstract
Due to its importance as forage in Mexico and to know the dry matter yield (DM) and its morphological components, the aerial part of Avena sativa L., variety Chihuahua, was studied. The dependent variables DM, yield of DM (YDM), intercepted radiation (IR) were evaluated; yields of leaf (L), stem (S), panicle (P), dead material (MM) and weeds (W), and leaf/stem ratio (L/S). Harvests were made every 15 days of age, from 30 days to 150 days. This research was carried out in the ‘Predio Nuevo’ experimental field of the College of Postgraduates, Montecillo, Texcoco, State of Mexico, August 2018 to January 2019. The experimental units were small areas limited by a 0.25 m2 table in each plot, for each age, with three repetitions. All the relationships between dependent variables and age were increasing or decreasing sigmoids. The maximum YDM was reached after 120 days: 5 355 kg ha-1. Yields for this age were: L (776 kg ha-1), S (2 225 kg ha-1), P (1 790 kg ha-1), MM (304 kg ha-1) and W (259 kg ha-1). The intersection of L and S was considered the point of best yield quality (82.5 days): 4340 kg ha-1. The yields at this point were: L (1 607 kg ha-1), S (1 658 kg ha-1), P (572 kg ha-1), MM (200 kg ha-1) and W (303 kg ha-1). In conclusion, the harvest age to maximize the yield of the aerial part and the grain was 120 days and to obtain better quality it was 82.5 days.
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