BOLETIM DA FACULDADE DE CIÊNCIAS AGRÁRIAS DO PARÁ, n.14, 1984

Abstract

1) The physiological behaviocer of pulped mechanically açaí seeds (Euterpe oleracea, Mart.) was studied in varions package kinds. The seeds were packed in: paper bag, paper bag involved in transparent polyethylenic bagi transparent polyethylenic bag, jute bag, transparent receiver, glass, tin box and granary (testimony). The results show the use of paper bag involved in transparent polyethylènic bag as the more viable and options the plastic receiver, the tin box, at last, the glass receiver. One must not use plastic and jute bag and granary.

2) Many lenght of time pulped vlolet açai (Euterpe oleracea. Mart.) seeds imersion were tested. "maceration-pulp" traditional method in preparing the açai jude. The treatments were made by imersion in " igarapé" water during varions periods, as 30, 60, 90, 120 and 180 minutes, except the testimony that bore the "maceration-pulp" only, common on other treatments. The effect of each treatments was rated by emergence percentag of viable seeds. The sowing was made subsequenty to each time imersion, 120 minutes after " maceration-pulp" and as an option the "maceration-pulp" traditional method in preparing the açai juice.

3) The effects of distance hetween rows and density of planting upon tillering and grain yield of irrigated rice were studled in a trial carried out at the campus of Faculdade de Ciências Agrárias do Pará, Belém, Pará on a swamp area of Guamá river in a Low Humic Glay soil. Seedlings of Cica.4 cultivar were used Three distances hetween rows (0,50m x 0,50m; 0,50m x 0,30m; 0,30m x 0,30m) combined with four planting densities (2, 3, 4 e 5 seedlings per hole) amounting to twelve treatments were tested. The estatistical analysis of the data indicated that the' higher production was obtained with intervals between rows of 0,30m x 0,30m and planting density of 5 seedlings per hole as compared with the greatest intervals between rows and inferior planting densities, About the tillering, the distance between rows of 0,50m x 0,50m and planting density of 4 seedlings per hole provided a greater tillering than the smallest distances between rows. Finally the more narrow distance between rows (0,30m x 0,30m) combined with a greater planting density (5 seedlings per hole) provided the plants of minor height as compared with the more ample distances between rows.

4) This work describes a caseous tuberculosis jn a black buffalo from Pará State Brazil, involvlng the lungs, liver and several limph nodes with lesions which are caracterizad by large and encapsulated abcess and nodules.

5) Experiments in beans (Vigna unguiculata (L.) Walp. subsp. sesquipedalis (L.) Verdcourt)., were conducted in Belém, Pará, Brasil during 1976 until 1977, and the best type of variety was the "black seed" cultivated in june, in a density of three plants per place. It was also observed high incidence of leaf diseases in rainy season (january-march), as also a little light intensity, damaging the culture.

6) The preliminary study of a specific mixed bred herd, "Jerdi" (5/8 Jersey + 3/8 Red-Sind) raised on the ecological conditions of the Amazon Region, utilized data of sixteen cows and forty.five calves of which were twenty five males and twenty females, raised on the campús of the "Faculdade de Ciências Agrárias do Pará" located in Belém, State of Pará from 1977 to 1980. It was analized the influences of the year of birth and sex of calves, the periods with more and less concentration of rain and the cow age on ; calves weigth of birth, period of lactation, total milk production and fat content of milk. The analysis of the data showed that the influence of years of birth had a significant effect on the lactation period (P<0 05) and on the total milk production (P<0,01). It was not observed any effect on the weight of birth (P>0,05). The values of milk production occorred during 1977 and 1978. The period with more and less concentration of rain, the sex of calves and cow age, did not influenced significantly on none of the studied caracteristlcs (P>0,05).

7) This work was carried out in a plantatibn of Pinus caribaea var hondurensis of the afforestation company Santa Izabel Agroflorestal, found in the northeast of the Para State, Brazil. The main objective was study and selection of regression equations estimate total heigth as a function of dendrometric varlables aasily obtained in the íield. For this study 76 trees of Pinus caribaea var hondurensis were sampled with in a diametric amplitude of 4 to 24 cm, in several stands. Of ali tested models, the best results was obtained with the equation Ht = D2 / ( — 1,633586368 + 1,2216842911) + 0,0240630453 D2) + 1,3 with r2 = 0,6 and Syx - 1,9.