Emergência de sementes e desenvolvimento de plântulas de Curubita máxima L. em função de diferentes substratos.

Abstract

For a good early development of olive groves, the seeds should be sown on a substrate that meets all of your initial needs. For this, it must present characteristics such as: good aeration and structure, good water retention capacity, good drainage, among other factors. In this sense, the objective of this work was to evaluate the influence of different substrates in the emergence and initial development of Curcubita maxima L. seedlings in a greenhouse in the city of Sumé-PB. The experiment was conducted at the seedling nursery of the Laboratory of Ecology and Botany (UFCG / CDSA). A completely randomized design with five treatments was used. The substrates used were: sand (T1), sheep manure (T2), soil (T3), sand + soil + manure (T4) and soil + manure (T5). Emergency speed index (IVE) were evaluated; length of seedlings (CP) and dry mass of seedlings (DM). According to results obtained, it was verified that the substrates influenced in all the parameters studied. Thus, soil and manure substrate (T5) were considered the most efficient for seed emergence and dry mass of the seedlings, while the sand + soil + manure substrate (T4) provided the highest emergence speed and length of C. maxima seedlings, under uncontrolled conditions in the municipality of Sumé- PB. Temperature is one of the most important climatic factors for the cultivation of cucurbitaceae, which adapt well to hot and semi-arid zones, with temperatures of 18º to 30ºC, so this crop has a good performance in our region since we have high temperatures during whole year.