Amanda Regina Godoy

Produção de mudas de abóbora com diferentes doses de nitrogênio e potássio

PRODUCTION OF SQUASH SEEDLING WITH DIFFERENT NITROGEN AND POTASSIUM RATES The experiment was conducted under controlled condition, in Sao Manuel (SP). The objective of the present research was to evaluate the production of ‘Menina Brasileira’ squash seedling grown in coconut fiber substrate with varying availabities of nitrogen and potassium. Nutrients were applied via fertirrigation. The experimental design was in randomized blocks, with 16 treatments in a factorial 4 x 4: four rates of nitrogen (0, 40, 80 and 120 mg L -1 N) as nitrate amonium and four rates of potassium (0, 70, 140 and 210 mg L -1 K2O) as potassium chloride. Four replicates and ten plants per plot were considered in this study. The characteristics evaluated in the seedlings were: fresh and dry mass of shoot and root, height and number of leaves. Potassium availability did not influence the evaluated characteristics. However, there was linear increase for most of characteristi cs with increasing rates of nitrogen, except for root dry mass.

Produção de tomate em função da "vibração" das plantas

TOMATO PRODUCTION IN FUNCTION OF PLANT “VIBRATION” The experiment was carried out with the objective to evaluate the production of fruits of different hybrids of tomato plants in function of plants “vibration”. Five hybrids (AF-8651, Debora Pto, Jennifer, Miramar and Platinum) and two treatments of “vibration” (1 - with plant “vibration”; 2 - without plant “vibration”). Randomized blocks design was used with four replication and each plot was constituted by five plants, with three useful plants per plot. The vibratory stimulation of the plants was carried through individual and manually from the beginning of the bloomming. For this, plants were “vibrated”, individually, shaking wire where support was fixed (bamboo) with hand for 5 seconds, twice a day. Numbers of seeds, mass of seeds, number of commercial fruits, mass of commercial fruits, average mass of commercial fruits, fruit setting and percentage of commercial fruits had been evaluated. The “vibration” of the tomato plants favored the release of pollen grains, and, therefore bigger fruits setting and greater number of seeds for fruit that had provided to greater production of fruits, with bigger percentage of commercial fruits in the different hybrids.

Qualidade de sementes de quiabeiro em função da idade e do repouso pós-colheita dos frutos

O trabalho foi conduzido na FCA-UNESP, em Botucatu (SP), objetivando-se estudar o efeito da idade do fruto e o periodo de repouso pos-colheita sobre a qualidade de sementes de quiabeiro cv. Santa Cruz-47 (Abelmoschus esculentus Moench.). No dia da antese, as flores foram etiquetadas e os frutos foram colhidos com 34, 41, 48 e 55 dias apos a antese (DAA). Para cada idade, em metade dos frutos as sementes foram extraidas imediatamente e a outra metade ficou em repouso por quatorze dias, antes da extracao das sementes. Para verificar a qualidade das sementes os seguintes testes foram realizados: teor de agua no dia da extracao das sementes, massa de 100 sementes, teste de germinacao, primeira contagem do teste de germinacao e condutividade eletrica. Pode-se concluir que o armazenamento para qualquer idade do fruto melhora o vigor das sementes. Para germinacao final, o armazenamento e favoravel quando os frutos sao colhidos ainda novos (34 e 41 DAA).

Produção e heterose em cruzamentos entre linhagens de pepino do grupo caipira

The objective of this work was to evaluate yield of eight cucumber inbred lines and heterosis of hybrids from intercrosses parcial diallel (4 x 4), in non heated green house allowed open pollination by insects. The experimental design was randomized blocks with 27 treatments: 16 experimental hybrids, three commercial hybrids (Safira, AG-221 and Guarani), four S5 lines from population SHS and four S4 lines from population GH, with four replicates and six plants per plot. The following traits were evaluated: total fruit number and fruit weight per plant, commercial fruit number and commercial fruit weight per plant and percentage of commercial fruits. Heterosis and superiority in relation to superior parent were estimated. Experimental hybrids H35 and H43 had the highest yield. Both positive heterosis of hybrids over lines, and general heterosis, in relation to superior parental were obtained.

Influência do estádio de maturação da flor na produção de sementes de pimentão com polinização manual

INFLUENCE OF FLOWER STAGE MATURATION IN SWEET PEPPER SEED YIELD The purpose of this experiment was to evaluate the influence of flower development stage on sweet pepper seed yield in manual pollination. The trial was set up in a randomized complete block design, with five treatments, six replications and ten plants/plot. The treatments were manual pollination soon after flower emasculation; manual pollination one, two and three days after emasculation (always with flower emasculation one day before anthesis) and a control (natural pollination). Higher seed yields (weight and number), per fruit and per pollination, were obtained with pollination either one day before anthesis or at anthesis, treatments that did not differ from natural pollination.

PRODUÇÃO E QUALIDADE DE FRUTOS DE ERVILHA TORTA SUBMETIDAS A DIFERENTES NÍVEIS DE ADUBAÇÃO POTÁSSICA

EnglishThe objective of this work was to evaluate the influence of potassium levels in the yield and quality of pea, cultivar Torta de Flor Roxa. The experiment was set up from March to July of 2006, in randomized blocks design, with six replicates and six treatments: 0,0; 1,14; 2,34; 3,54; 4,68; 5,88 g plant-1 of K2O applied in covering after the bloom beginning. There was no increase in edible-podded pea yield (overage of 29,34 pods and 7,37 g per plant) and the fruit quality was not altered with increase of K2O rate apllied, probably because the soil showed high level of this nutrient (5,7 mmolc dm-3). Despite the recommendation of potassium application in covering, this work concluded that the levels of potassium on coverage did not influence the yield and fruit quality of edible-podded pea portuguesO objetivo deste trabalho foi avaliar a influencia da aplicacao de niveis de potassio em cobertura na producao e na qualidade de ervilha, cultivar Torta de Flor Roxa. O experimento foi conduzido no periodo de marco a julho de 2006, em blocos casualizados, com seis repeticoes e seis tratamentos: 0,00; 1,14; 2,34; 3,54; 4,68; 5,88 g planta-1 de K2O aplicados em cobertura a partir do florescimento. Nao houve aumento na producao (com media de 29,34 vagens comerciais e 7,37 g por planta) de ervilha torta e tambem nao foi alterada a qualidade dos frutos com o aumento das doses de K2O fornecidas, provavelmente pelo solo ja apresentar teor alto deste nutriente (5,7 mmolc dm3). Apesar de ser recomendado a aplicacao de potassio em cobertura, concluise que as doses aplicadas em cobertura nao influenciaram a producao nem qualidade dos frutos de ervilha torta.

Efeito da endogamia na produção de sementes de pepino caipira

The objective of this work was to evaluate the inbreeding depression after successive generations of self-pollination in a cucumber population, generation F2 from the cross (Safira x Hatem) x Safira. Experimental design was randomized blocks with six treatments (different generations of self-pollination - S0 to S5), four replicates and five plants per plot. There was no statistical difference among all evauated characteristics (fruit number per plant, number and weight of seeds per plant and per fruit, germination test, first count of germinated seeds, index of germination a and weight of 100 seeds), showing that inbreeding did not affect seed production and quality in this population.

UTILIZAÇÃO DE BIOESTIMULANTE NAS CARACTERÍSTICAS AGRONÔMICAS DE DIFERENTES CULTIVARES DE BATATA IRRIGADA

O objetivo deste trabalho foi avaliar o efeito do bioestimulante na producao de diferentes cultivares de batata na regiao nordeste de Mato Grosso do Sul. O experimento foi conduzido no municipio de Chapadao do Sul-MS entre maio e setembro de 2011 em esquema de parcelas subdivididas, tendo nas parcelas tres cultivares de batata (Asterix, Atlantic e CLL) e nas subparcelas duas tecnicas de manejo cultural (com e sem aplicacao do bioestimulante Stimulate®) no delineamento em blocos ao acaso, com quatro repeticoes. O experimento foi conduzido a ceu aberto e irrigado com o sistema por mangueira plastica perfurada (tripa, Santeno 2), atendendo 100% da demanda evapotranspirometrica da cultura. Foram avaliadas as seguintes caracteristicas: comprimento, largura e espessura dos tuberculos, numero de tuberculos por planta, produtividade comercial e eficiencia do uso da agua (EUA). A cultivar Asterix deve ser preferida pelos agricultores de batata no nordeste de Mato Grosso do Sul. A utilizacao de Stimulate® nao beneficia as caracteristicas agronomicas da batata cultivada no nordeste de Mato Grosso do Sul.