Desempenho agronômico de clones de palma forrageira em função do tipo de adubo orgânico

Abstract

The semi-arid region is responsible for the emission of greenhouse gases and precipitation with irregular distribution and without space, which affect agricultural activity. Therefore, livestock farming emerges as an important regional activity. However, forage production normally suffers from quantitative and qualitative seasonality, influencing the viability of this activity. For sustainability, the use of fodder and adaptations to the region is recommended. In this context, forage cactus emerges as an alternative due to its adaptability to the edaphoclimatic conditions of arid and semi-arid environments. Like most crops, forage cactus responds very well to cultural practices, for example, fertilization and irrigation. Forage cactus cultivation for forage, under irrigated conditions and with the use of fertilizers can help maximize production. The objective of this study was to evaluate the effects of organic fertilizer, with manure and liquid biofertilizer, without agronomic effect of two clones of forage cactus. The experiment was conducted in 21L pots in the municipality of Serra Talhada, in Pernambuco. (The clones of Orelha de Elefante Mexicana (OEM, Opuntia stricta (Haw.) Haw.) and the Miuda (MIU, Nopalea cochenillifera (L.) Salm-Dyck) were arranged in a completely randomized design, in factorial scheme 5 + 1x2, with five doses of biofertilizer based on goat manure (BioCapri) (0 mL, 50 mL, 100 mL, 150 mL, 200 mL plant-1 month-1) and a dose of manure (180 cm3 plant-1) with nine replicates. BioCapriwas artificially sent to June and November 2017. Irrigation was performed once a week based on crop evapotranspiration. Morphological data of plants and cladulates were over time, and fresh mass per plant at the time of harvest (p >0.05). In most clones, a fresh mass production, whereas the MIU possesses greater thickness and length of cladodes. It concludes that an application of doses up to 200 mL of BioCapri contributed little to the yield of the forage cactus.