Evaluación de tres niveles de sombra sobre variables productivas en cacao (Theobroma Cacao L.) Clon EETP-800 en la provincia de Zamora Chinchipe, “El Padmi"

The cultivation of cocoa (Theobroma cacao L.) has a growing demand worldwide. However, at the national level, low yield is an obvious problem affecting the cocoa sector. Among the factors limiting cocoa production is poor management of the crop due to lack of knowledge of technical criteria on the effect that the use of shade would have on the yield and quality of the fruits. The aim of this research was to evaluate the effect of three levels of shade on physiological and productive parameters in cocoa, clone EETP-800 that was carried out at the fifth Experimental “El Padmi” in Zamora Chinchipe, on two-year-old plants. The experimental design was completely randomized (DCA) with 7 repetitions, three treatments: no shade 0% and shade 35% and 80%. Morpho-physiological variables such as crown diameter, stem diameter leaf area index (FIA), chlorophyll content were measured. For production variables, the absolute growth rate (AWR), number of seeds per fruit, estimated yield were taken into account, as well as Brix degrees, acidity, fat content, protein, ash and moisture of the almond were evaluated. In the morphophysiological variables, the index of leaf area and crown diameter were higher for the treatment 80 % shade, since the lower light exposure, the higher the index of leaf area and crown diameter. The highest chlorophyll index was presented by the shade at 35%, this is because the plants need a lightening. As for the performance parameters, no significant differences were found which would indicate that in clone EETP-800 may not need shade in this area. Keyword: Theobroma cacao L, morphophysiology, shadow, yield.

• Autore principale: Quinche Masa, Jessenia Lourdes (author)
• Natura: bachelorThesis
• Lingua: spa
• Pubblicazione: 2023
• Soggetti: THEOBROMA CACAO; MORFOSIOLOGIA; CACAO
• Accesso online: https://dspace.unl.edu.ec/jspui/handle/123456789/27830