YIELD AND GERMINATION OF SEED OF Cenchrus ciliaris cv ZARAGOZA 115 IN RESPONSE TO PHYTOHORMONES IN NORTH OF COAHUILA, MEXICO (Atena Editora)

Abstract

The objective of the study was to evaluate the germination and yield of buffel grass seed (Cenchrus cilaris cv Zaragoza 115) in response to the effect of phytohormones at different doses under irrigation in the north of Coahuila. The experiment was carried out in the period from March to July 2022, in a meadow of buffel grass var. Zaragoza 115 established in 1997, at the Zaragoza Experimental Site. Zaragoza, Coahuila. Mexico. Four phytohormones were evaluated: T1: Auxins, T2: Gibberellins, T3: T1+T2 and T4: Auxins with macro and micro nutrients) and four doses per phytohormone, including the zero dose as a control (0, 15, 30 and 45 ppm A.I. ha-1), distributed in a randomized block design in a divided plot arrangement, with four repetitions. The following were evaluated: raw seed yield (RSC ha-1), number of panicles (NP ha-1), percentage of detached seed (SD), percentage of germinated seed (SG) and the cost/benefit ratio. The use of phytohormones increased NP and RSC (p>0.05), where the highest values (1,785,000 panicles ha-1 and 180.55 kg raw seed ha-1, respectively) occurred with the commercial auxin Folyver at 15 ppm of A.I. ha-1. The increase in CSR of Folyver® -15 compared to that of Folyver®- 0, was 30.55 % (55.17 kg ha-1). In SG, the highest value (24.36) was achieved with Radix®+Biogib® at 15 ppm I.A ha-1, higher and equal (P<0.05) to Radix® at 0 ppm, at 4.31%. In cost/benefit, Folyver® - 15 auxin, with an increase of 55.17 kg of raw seed ha-1 and with respect to the control, reported a benefit of $19.18:1. It is concluded that the highest yield of panicles, raw seed and benefit was achieved when applying the commercial phytohormones Folyver® at 15 ppm I.A ha-1. in buffel pastures Z115 with years of establishment.