Edilma Pereira Gonçalves

Snap-bean seeds production accordingly to levels and sources of organic matter

With the objective of evaluating sources and levels of organic matter on the production of snap-bean seeds, cv. Macarrao Trepador, there was set up an experiment in the Federal University of Paraiba, Brasil, from April to September/1998. The experimental design was of randomized blocks, in the factorial scheme 4 x 5, testing four sources of organic matter (cattle, goat and chicken manure and earthworm humus) in five levels (0, 10, 20, 30 and 40 t/ha of cattle and goat manure and 0, 5, 10, 15 and 20 t/ha of earthworm humus), in four replications. The maximum production of seeds was obtained with the levels of 27,66 t/ha of cattle manure (3,555.10 kg), 20.85 t/ha of goat manure (3,259.56 kg) and 9.87 t/ha of chicken manure (2,919.00 kg/ha) and earthworm compost (3,270 kg/ha). The most economic level of cattle manure was of 25.57 t/ha, with a revenue of 1,442.55 kg of seeds/ha (R

Comportamento fisiológico de sementes de pitombeira [Talisia esculenta (A. ST. Hil) Radlk] submetidas à desidratação

4,616.16), 19.11 t/ha of goat manure with a revenue of 1,164 kg of seeds/ha (R

Physiological Potential Evaluation of Myracrodruon urundeuva Stored Diaspores

3,724.80) and 5.17 t/ha of chicken manure with a revenue of 177.86 kg of seeds/ha (R

Application of dairy residue in peanut (Arachis hypogaea L.) cultivated in Northeastern Brazil

569.15). Under the point of view of seeds production, the application of earthworm compost propitiated productions above the national average, but its use in the production of snap-bean seeds is not economically viable. The economical analysis indicated the cattle manure as the most viable fertilization source to produce snap-bean seeds.

Peanut seed yield under influence of fertilizer and biostimulant

Em condicoes normais, as sementes de pitombeira [Talisia esculenta (A. St. Hil) Radlk] perdem a qualidade fisiologica rapidamente, o que dificulta sua utilizacao pelos viveiristas. Em funcao da escassez de pesquisas referentes a dessecacao de suas sementes, o trabalho teve como objetivo avaliar a qualidade fisiologica de sementes de pitombeira submetidas a cinco periodos de secagem (0; 24; 48; 96 e 120 horas). O delineamento experimental foi inteiramente ao acaso, e os dados, submetidos a analise de variância e de regressao polinomial. A avaliacao do efeito dos tratamentos foi realizada atraves da determinacao do teor de agua, porcentagem de germinacao e testes de vigor (primeira contagem, indice de velocidade e tempo medio para germinacao, comprimento e massa da materia seca da raiz primaria e parte aerea). Verificou-se um teor de agua inicial de 40%, o qual foi reduzindo com os periodos de secagem; consequentemente, registraram-se as maiores porcentagens de germinacao (99%) com 53 horas de secagem. Quanto ao vigor, os maiores valores de primeira contagem (78%) e comprimento da parte aerea (11,29 cm) foram obtidos com 38 horas de secagem; ja o menor tempo medio para germinacao (17 dias) e comprimento maximo da raiz primaria (15,79 cm) ocorreram quando a secagem foi por 40 horas. Quanto ao indice de velocidades de germinacao (1,41), massa da materia seca das raizes (0,079) e parte aerea (0,229), os valores maximos foram obtidos quando as sementes foram submetidas a secagem por 44; 33 e 50 horas, respectivamente. Diante dos resultados, recomenda-se a secagem de sementes de pitombeira por ate 48 horas, como forma de garantir a germinacao e o vigor.

Substratos para testes de emergência de plântulas e vigor de sementes de Erythrina velutina Willd., Fabaceae

The conservation of seeds in an appropriate location combined with the utilization of rapid tests for monitoring the physiological aspects is essential for quality seedlings. Thus, the study aimed to evaluate the behavior of Myracrodruon urundeuva diaspore under different periods and storage environments, and verify the testing of individual exudate pH in the physiological monitoring. The experimental design was completely randomized, factorial 2 × 8 (8 periods of storage and 2 storage environments) with four replications of 25 diaspores, using the Tukey test at 5% probability for average comparisons. After analysis of variance, it was performed regression analysis for the quantitative factor and simple Pearson correlation test. The variables analyzed were moisture content, seedling emergence (E) emergence velocity index (IVE), mean emergence time (TME) and the pH of the individual exudate. The results of E, IVE, TME tests indicated that the Myracrodruon urundeuva diaspores could be stored for ten months in room fridge, with low vigor loss. The pH test individual exudate showed lower estimates of simple Pearson correlation with the emergence test, not monitoring the physiological potential of Myracrodruon urundeuva diaspores.

Germinação de sementes de Cereus jamacaru DC. em diferentes substratos e temperaturas

Peanut (Arachis hypogaea L.) is one of the widely cultivated legume in tropical and subtropical regions. The aim of this study was to evaluate the agronomic characteristics of peanut (BR1) under different doses of dairy residue. The experiment was conducted as a randomized block design with three replicates. The treatments consisted of doses of milk residue: 0, 2.5, 5, 7.5, 10 m 3 ha -1 and an additional control containing phosphors and potassium (PK) at dose of 15 and 50 kg ha -1 . The following characteristics were determined in plants: leaf area, number of stems, shoot and root system length, dry weight of shoot and root system, number of pods and grain yield. The dose of 5 m 3 ha -1 provided the highest agronomic characteristics. The grain yield was greater for the dose of 10 m 3 ha -1 . The dairy residue can be used as a source of fertilizer on peanut crop by meeting their nutritional requirements.

Caracterizacao fisico-quimica de frutos de umbuzeiro (Spondias tuberosa Arr. Cam.) colhidos em quatro estadios de maturacao

Nowadays, the search for increase in the crop productivity with high organoleptic, physical and physiological quality of seeds remains one of the main objectives. Considering the importance of peanuts (Arachis hypogaea L.) for Brazilian agriculture and for the production of seeds, it is indispensable to use technological innovations aiming at the advancement of productivity and profitability for the seed producer. This study aimed to evaluate the yield and the components of peanut seed production of cultivar BR1, subjected to the foliar and seed application of Ca + B, Mo + P and Stimulate®. The design was randomized blocks with the use of three products (Ca + B, Mo + P, Stimulate ® ), two types of applications (via foliar and seed), the PK culture, and the absolute control, following a factorial scheme of [(3 × 2) + 2]. The doses of 2.0 mL/kg (Ca + B), 1.6 mL/kg (Mo + P), and 15 mL/kg (Stimulate ® ) via seeds were indicated the best for the development of the peanut crop due to its profitability and efficiency. The application of Ca + B, Mo + P, and Stimulate ® via seeds is beneficial for the initial counting, emergence, emergence speed index, biological productivity, pod production, seed production and leaf area.