poster - International Conference of Agricultural Engineering
poster - International Conference of Agricultural Engineering poster - International Conference of Agricultural Engineering
Acknowledgements: The research was partly supported by the Korea AgBMP program administered by the Rural Research Institute and Kangwon National University. The authors appreciate their generous support. References Choi, Y. H., Won, C. H., Seo, J. Y., Shin, M. H., Yang, H. J., Lim, K. J., & Choi, J. D. (2009). Analysis and comparison about NPS of plane field and alpine field. Journal of Korean Society on Water Quality, 25(5), 682-688. (in Korean) Shin, M. H., Won, C. H., Choi, Y. H., Seo, J. Y., Lee, J. W., Lim, K. J., & Choi, J. D. (2009). Simulation of field soil loss by artificial rainfall simulator -by varying rainfall intensity, surface condition and slope-. Journal of Korean Society on Water Quality, 25(5), 785-791. (in Korean) Shin, M. H., Won, C. H., Choi, Y. H., Seo, J. Y., & Choi, J. D. (2010). Simulation of generable nutritive salts by artificial rainfall simulator in field -by varying amount of fertilization and slope-. Journal of the Korean Society of Agricultural Engineers, 52(3), 31-38. (in Korean) Shin, M. H., Won, C. H., Park, W. J., Choi, Y. H., Jang, J. R., Lim, K. J., & Choi, J. D. (2011). Analysis of the reduction effect on NPS pollution loads by surface cover application. Journal of the Korean Society of Agricultural Engineers, 53(4), 29-37. (in Korean) Won, C. H., Shin, M. H., Choi, Y. H., Shin, J. Y., Park, W. J., & Choi, J. D. (2011). Applications of surface cover materials for reduction of soil erosion. Journal of Korean Society on Water Quality, 27(6), 848-854. (in Korean)
1 PAPAYA SEEDLINGS PRODUCTION FROM SOIL GROUP AND FORMOSA GENOTIPS UNDER WATER LEVELS IN SOIL Evandro Franklin de Mesquita 1 Lúcia Helena Garófalo Chaves 2 Flaviana de Andrade Vieira 1 . 1 Universidade Estadual da Paraíba, Departamento de Agrárias e Exatas, Campus IV, Catolé do Rocha-PB; 2 Universidade Federal de Campina Grande, Campus I, Campina Grande-PB. ABSTRACT: The term economy of water in the agriculture doesn't mean obligatorily they be supplied to the plants smaller volumes than demanded they mean them more properly than the applied amount is efficiently used by the culture. In this direction, an experiment was carried out in order to evaluate the effects of water levels in soil on seedlings formation papaya tree from group Soil and Formosa. The treatments were distributed in delineation completely randomized using the factorial design 5x2 referring to values of soil content at levels of 60, 70, 80,90 and 100% field capacity of the soil and the papaya tree from Soil and Formosa group. The plants irrigation was made by weighing process supplying daily each experimental unit with water volume transpired by plants in each studied treatment. The substratum was constituted of a mixture of 2 kg of soil material + earthworm humus in the proportion of 1:1 v/v, conditioned in black polyethylene bags with 15 cm of diameter and 30 cm of height. The sowing consisted of four seeds for experimental unit and to 25 days after the emergency of normal seedlings took place the rough-hewing, just staying the most vigorous seedling. The analyzed variables were: Height, stem diameter, number of leaves, dry matter of the aerial part, of roots and total of the plants and relationship between dry matter date of root and aerial part. From results the highest values of height, diameter of stem and leaves emitted were obtained from the substrate with humidity between 85 and 100% of field capacity in both genotypes.The values of dry biomass of shoots, roots and dry biomass ratio of root / shoot increased with moisture in the substrate, with supremacy of the Solo on the Formosa papaya. Papaya Formosa develops more shoot and yields root dry matter less than the genotypes Solo. Key words: Carica papaya. growth of seedlings. water in the soil. INTRODUCTION Papaya (Carica papaya L.) occupies a prominent place in the national fruit and the states of Bahia, Espírito Santo and Rio Grande do Norte were the largest producers and exporters in the country. The cultivars most commonly planted in Brazil belong to Solo and Formosa groups. Productivity and quality of papayas depend on the cultivation of plants exempted from obtaining seed to seedling production. Among the factors that may affect the production of seedlings of good quality, are the control or irrigation, seed quality, fertilizer and substrate used, since they contribute to better development and health of plants (Yamanishi, 2004). The nutrient supply is directly associated with the water supplied need for irrigation since excess promote rinsing of the substrate and consequent leaching of nutrients. On the other hand,
- Page 177 and 178: data P (mm), gauged in 130 pluviogr
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Acknowledgements: The research was partly supported by the Korea AgBMP program<br />
administered by the Rural Research Institute and Kangwon National University. The authors<br />
appreciate their generous support.<br />
References<br />
Choi, Y. H., Won, C. H., Seo, J. Y., Shin, M. H., Yang, H. J., Lim, K. J., & Choi, J. D. (2009).<br />
Analysis and comparison about NPS <strong>of</strong> plane field and alpine field. Journal <strong>of</strong> Korean Society<br />
on Water Quality, 25(5), 682-688. (in Korean)<br />
Shin, M. H., Won, C. H., Choi, Y. H., Seo, J. Y., Lee, J. W., Lim, K. J., & Choi, J. D. (2009).<br />
Simulation <strong>of</strong> field soil loss by artificial rainfall simulator -by varying rainfall intensity, surface<br />
condition and slope-. Journal <strong>of</strong> Korean Society on Water Quality, 25(5), 785-791. (in<br />
Korean)<br />
Shin, M. H., Won, C. H., Choi, Y. H., Seo, J. Y., & Choi, J. D. (2010). Simulation <strong>of</strong> generable<br />
nutritive salts by artificial rainfall simulator in field -by varying amount <strong>of</strong> fertilization and<br />
slope-. Journal <strong>of</strong> the Korean Society <strong>of</strong> <strong>Agricultural</strong> Engineers, 52(3), 31-38. (in Korean)<br />
Shin, M. H., Won, C. H., Park, W. J., Choi, Y. H., Jang, J. R., Lim, K. J., & Choi, J. D. (2011).<br />
Analysis <strong>of</strong> the reduction effect on NPS pollution loads by surface cover application. Journal<br />
<strong>of</strong> the Korean Society <strong>of</strong> <strong>Agricultural</strong> Engineers, 53(4), 29-37. (in Korean)<br />
Won, C. H., Shin, M. H., Choi, Y. H., Shin, J. Y., Park, W. J., & Choi, J. D. (2011).<br />
Applications <strong>of</strong> surface cover materials for reduction <strong>of</strong> soil erosion. Journal <strong>of</strong> Korean<br />
Society on Water Quality, 27(6), 848-854. (in Korean)
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