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The use of fungi of the genus Trichoderma is highly relevant for agriculture due to vegetative, root growth, increase in chlorophyll and leaf area with increasing productivity. The watermelon, a highly important fruit in Brazilian trade, is grown in semiarid areas featuring irregular rainfall and lack of good quality water. Saline water is used for irrigation, which is a limiting factor for the production of several olericulture products. Current research evaluates the influence of Trichoderma spp. in the development of watermelon seedlings irrigated with saline water. Experiment was conducted at the Universidade Federal de Campina Grande, at the Center for Sciences and Agriculture-Food Technology, Pombal PB Brazil, in a vegetable house. Treatments were distributed in a randomized block design, with factorial scheme 4 x 2 x 5, four cultivars of watermelon (Crimson sweet, Crimson Select Plus, Fair Fax and Charleston gray), two species of Trichoderma (T. harzianum and T. longibrachiatum) and five saline concentrations (0.3; 1.3; 2.3; 3.3; 4.3 dSm-1) with 4 replications. Analyzed variables comprised phenology, photosynthetic hues, total fresh and dry mass and saline tolerance index. Saline water higher than 0.3 dS m-1 reduced growth and biomass of watermelon seedlings in all cultivars. However, T. longibrachiatum coped better to the deleterious effect of saline stress when compared to T. harzianum in cultivars Fair Fax and Crimson Sweet, when tolerance and salinity index are taken into account. [ABSTRACT FROM AUTHOR]

Copyright of Revista IRRIGA - Brazilian Journal of Irrigation & Drainage is the property of Revista IRRIGA (Brazilian Journal of Irrigation & Drainage) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Caatinga is the property of Revista Caatinga and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Brasileira de Agricultura Irrigada - RBAI is the property of Revista Brasileira de Agricultura Irrigada - RBAI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The Sapindus saponaria L. it is a species that possesses propagation just for seeds and her germination tax is relatively moderate the drop. Therefore, it was aimed at to evaluate different treatments pre-germinating in the overcoming dormancy of the numbness of seeds of this species. The work was driven in atmosphere protected in the Federal University of Campina Grande, in Pombal, Paraíba. The seeds were desinfested with hipoclorito to 2% for five minutes, washed in running water and submitted to the following treatments pre-germinating: intact (witnesses - T1) seeds; manual escarification with aid of sandpaper of water n° 100 on the opposite side to the micropyle (T2); chemical escarificação through the immersion in sulfuric acid to 98% Shovel, during 10, 30 and 60 minutes (T3, T4 and T5, respectively) and physical escarification through the immersion in hot water to 80 °C for five minutes, following by thermal shock in cold water to 5 °C for more five minutes (T6). A completely randomized design with four replicates. The seeds were submitted to the emergency tests in sand, index of emergency speed, plant height, root length, mass dries of the aerial part and of root and percentage of hard seeds. The job of the manual scarification with sandpaper of water n° 100 on the opposite side to the micropyle of the seeds is the treatment recommended by being simpler and of larger efficiency, seeking the preservation of the physiologic quality of the seeds and a better vegetative development. [ABSTRACT FROM AUTHOR]