Evaluación nutricional de cuatro mezclas de sutratos para jardinería, en el cultivo de crisantemo (Chrysanthemum sp. L.) en los predios del departamento de horticultura.

Abstract

The objective of the research work is to evaluate nutritionally four mixtures of substrates for gardening to grow chrysanthemum (Chrysanthemum sp. L.) in the fields of the horticulture department. The mixtures used were: 75% coconut fiber + 25% river sand, 75% rice husk + 25% river sand, 75% avocado leaves + 25% sand, 75% needles of pine + 25% river sand. A randomized complete block design (RCBD) was carried out with 4 treatments and 3 repetitions. The following variables were evaluated: analysis of the nutritional content of the substrates, percentage of seizure, plant height, number of stems per plant, days to flowering, yield. Propagation was carried out by cuttings and a seedling was placed in a cover. The percentage of seizure was 100% in all treatments, the substrate composed of 75% pine needles + 25% river sand for the variable height of the plant with 29.32 cm, number of stems per plant 2.28 , yield per square meter of 36.44 stems and yield per hectare with 443128.89 stems, T4 presents the best physical and chemical characteristics to produce chrysanthemum and provides the necessary nutrients, pH of 5.80, electrical conductivity (EC) of 1.96 mmhos, humidity 51.34%. It is concluded that the substrate 75% pine needles + 25% river sand turns out to be the best alternative to produce chrysanthemum. Treatment T4 obtained the highest benefit / cost ratio with 3.64 dollars, profitability of 264.08%. It is recommended to use the T4 treatment (75% pine needles + 25% river sand) to achieve better agronomic characteristics in the cultivation of chrysanthemum (Chrysanthemum sp. L.).