Final site evaluation of Arabica coffee (Coffea arabica L.) grafted on Robusta rootstock (Coffea canephora P.) to the application of biostimulants
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Abstract
The research was carried out at the Andil experimental farm of the Universidad Estatal del Sur de Manabí, the objective was to evaluate the behavior of two genotypes of arabica coffee (Coffea arabica L.) grafted on robusta rootstock (Coffea canephora P.) to the application of biostimulants, grown in a definitive site. The research was of explanatory type, in which the experimental design of completely randomized blocks (DBCA) was applied with factorial arrangement 22 with adjustments of measures in time (30, 60 and 90 days), 64 plants were used, distributed in 4 treatments T1
= Sarchimor 1669 + Micorriza, T2 = Sarchimor 1669 + Trichoderma, T3 = Sarchimor 4260 + Micorriza and T4 = Sarchimor 4260 + Trichoderma, with four replications. The variables to be evaluated were: rooting, graft diameter, graft length and number of leaves in a period of 90 days. The results showed an 88% of bud break, with the exception of T1, which reached 75%. The diameter of the graft of T1 was greater with 2.4 mm, the greatest length of the graft for T2 with 3.25 cm and the greatest number of leaves for T4 with 5.00 per plant. With respect to the time factor, the analysis determined a homogeneous behavior among treatments. It was concluded that the biostimulants not used had no effect on the percentage of bud set (88%), which, although high, is not satisfactory considering that this is a definitive site crop, and it is therefore recommended that this process be carried out at the nursery stage
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