Yield of tomato in monocrop and intercropping with aromatics plantsTomato is mainly cultivated in monocrops, by intensive use of chemical products. It is an activity with economic, social and environmental risks. The intercropping has been used as a form to reduce these risks. In this work the yield of tomato in sole crop and intercropping with Foeniculum vulgare, Mentha piperita, Ocimum basilicum and Ruta graveolens was evaluated. The monocrop of tomato and its intercropping was evaluated with aromatic plants in a complete randomized design, with five treatments and four blocks. We evaluated height, canopy area, production, yield and land equivalent ratio. On the population density adopted, the F. vulgare (fennel) presented greater height and canopy area, and caused significant reduction on total production of tomato, from 12.23 kg, in monocrop, to 7.88 kg, when intercropped with fennel. However, intercropping with fennel contributed to a lesser loose caused by fruits borer (24%). The greatest loose caused by fruits borer occurred in monocropping and in intercropping with M. piperita (peppermint). Intercropping with Ruta graveolens (rue) resulted significant increase of commercial production of fruits, about 26%. The relative yield of tomato was greater in intercropping with rue (13.6 t ha -1 ), followed by intercropping with peppermint (9.8 t ha -1 ) and with O. basilicum (basil) (9.1 t ha -1 ), and lesser on intercropping with fennel (6.4 t ha -1 ). These results showed that the intercropping with rue was more advantageous than others producing more fruits. Among the studied aromatic plants, basil presented the highest yield (96.5 t ha -1 ). The tomato intercropping with aromatic cultures permits better use of land and higher yield, mainly when intercropping with rue. All aromatics plants evaluated represent an alternative source of gain.

Dalneem, B. bassiana and the extract of neem leaves at 20% exhibited the best performance for control of S. eridania.

Effect of biofertilizer, and others biological and chemical products, in controlling the fruit small driller and in the production of staked tomato in two planting seasons and two irrigation systems.The objective of this study was to evaluate the effects of a biofertilizer associated or not with biological and chemical products under different irrigation systems upon the yield of staked tomato and the occurrence of the "small fruit borer". The experiments were carried out at Itabaiana county, Sergipe State, Brazil, during the dry and wet seasons, on a randomized blocks design with 13 treatments and four replications. Each plot contained 48 plants, with two branches, spaced by 1.00 x 0.50 with one plant of two stems. The efficiency of the treatments varied according to the seasons and to the irrigation systems. Total and commercial yields in the wet season were respectively, 82 and 59% greater than the ones obtained in the dry season, also with a higher average fruit weight. Percentage of drilled fruits was significantly higher in the wet season than in the dry season. Best treatments for the dry season were: a) sprinkler irrigation: Bacillus thuringiensis variety Kurstaki (Btk) alone or in combination with clorfluazuron; deltametrina + clorfluazuron and biofertilizer + Btk; b) drip irrigation: Btk + clorfluazuron. For the wet season sowing the best treatments were: a) sprinkler irrigation: Btk + clorfluazuron; biofertilizer + tefluazuron and clorfluazuron, and b) drip irrigation: biofertilizer + clorfluazuron and biofertilizer + abamectin.

Sete cultivares de batata (Solanum tuberosum L.) foram avaliadas durante três anos em Itabaiana-SE, com o objetivo de verificar a potencialidade de produção à altitude de 180 m e identificar os problemas fitossanitários que afetam a produtividade. Os experimentos foram conduzidos nos meses de junho a setembro, utilizando-se o delineamento experimental de blocos ao acaso, com cinco repetições. Após a colheita foram avaliadas a produção total, comercial (tubérculos sadios e com peso mínimo de 40 g) e perdas de produção decorrentes de sarna, podridão-mole, nematóide e insetos do solo. A análise conjunta das produções totais e comerciais de tubérculos revelou que as cultivares mais produtivas foram Baronesa (33,7 t/ha), Monalisa (32,7 t/ha) e Elvira (31,4 t/ha). A produção comercial variou de 3,4 t/ha a 22,5 t/ha, destacando-se as cvs. Elvira e Monalisa, com rendimentos de 22,5 t/ha e 20,5 t/ha respectivamente, com apenas três pulverizações com defensivos. Os problemas fitossanitários que mais afetaram a cv. Elvira foram sarna (13,1%) e nematóide das galhas (7,2%), enquanto a 'Monalisa' teve sua produção prejudicada mais pela incidência de insetos (15,1%), sarna (12,0%) e nematóide (9,7%). A cv. Monalisa apresentou tubérculos com melhores características para comercialização e está sendo cultivada a nível comercial em substituição às variedades Bintje e Baraka anteriormente cultivadas na região. Os resultados indicam a potencialidade da região de Itabaiana para a produção de batata.

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