Rafael Cesar Tieppo

Desempenho agronômico de alface americana fertilizada com torta de filtro em ambiente protegido

This work was carried out at the Mato Grosso State University, Tangara da Serra campus, Brazil, aiming to evaluate the agronomic characteristics of crisphead lettuce cultivars depending on filter cake rates application in protected environment. We used a randomized blocks design in a 3x4 factorial scheme, composed by three cultivars (Julia, Taina and Rafaela) and four rates (0, 10, 20 and 40 t ha-1), with four replications. Plots size was 1.2x1.2 m with 16 plants spaced 30x30 cm each, among which the 4 central plants were evaluated. We assessed the total fresh mass, marketable fresh mass, head fresh mass, total leaf number, marketable leaf number, stem length, stem diameter and plant diameter. The cultivar Rafaela presented the highest performance for fresh mass total, marketable and head, at the filter cake rate of 20 t ha-1. The cultivars Julia and Rafaela had greater plant diameter, stem diameter, total leaf number and marketable leaf number than cultivar Taina, regardless the filter cake rate applied. The filter cake application provided higher yield and marketable quality for crisphead lettuce.

Desempenho e orientação do crescimento do pepino japonês em ambiente protegido

The production of the Japanese cucumber Tsuyataro was evaluated using methods of stems growth conduction, controlling the lateral buds and number of stems per plant, through pruning. The research was carried out from October to December 2010, in a protected environment in Tangara da Serra, Mato Grosso state, Brazil, using a randomized blocks design, with five replications, in a factorial scheme (2x3). The first factor was the pruning, i.e., removal or not of lateral stems and the second factor was constituted of the control of number of stems: one, two and three stems per plant, with five replications. We evaluated the following characteristics: total and marketable number of fruits, commercial fruits rate, fruit length, fruit diameter, fruit length/diameter ratio, total and marketable yield of fruit per plant and fruit average weight. The treatment with conduction of the main stem without removal of lateral buds had better performance on total and marketable number of fruits per plant (19.4 and 16.0) and higher total and marketable yield of fruits (4,235.8 and 3,438.3 g per plant). The pruning of lateral buds provided increase in length, diameter and average mass of cucumber fruits of 24.5 to 25.1 cm; 3.4 to 3.5 cm and 212.1 to 228.3 g per fruit, respectively.

DISTRIBUIÇÃO E PROBABILIDADE DE OCORRÊNCIA DE PRECIPITAÇÃO EM CÁCERES (MT)

Rainfall is an important meteorological element, and the knowledge on its historical records is relevant for monitoring the impacts caused by its prolonged excess or lack. This study aimed to evaluate the monthly and annual rainfall variability and the probability for its occurrence, by using the incomplete Gamma distribution model, for the rainfall data from Caceres, Mato Grosso State, Brazil. A series of 26 years data, provided by the National Institute of Meteorology, which supports a station in Caceres, was used. The annual rainfall amounts showed great variability, with minimum of 972.9 mm, in 1985, and maximum of 1,624.1 mm, in 1998. The monthly data pointed out two well defined seasons: the dry season (May to September) and the rainy one (October to April). The lowest monthly averages occurred in June, July, and August, with 16.59 mm, 17.90 mm, and 20.09 mm, respectively. The estimates for the ? parameter ranged from 0.9, in June and August, to 13.4, in March. The ? parameter ranged from 13.2, in March, to 33.1, in January. The highest rainfall probability takes place from December to March, while June, July, and August show the lowest rainfall probability.