Effects of levels of CO2 and doses of potassium applied via irrigation water to the melon crop (Cucumis melo L.) in protected environment

• Grant number: 00/11668-2
• Support Opportunities: Regular Research Grants
• Start date: March 01, 2001
• End date: February 28, 2003
• Field of knowledge: Agronomical Sciences - Agricultural Engineering - Soil and Water Engineering
• Principal Investigator: Jose Antonio Frizzone
• Grantee: Jose Antonio Frizzone
• Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil

Abstract

The objective of this project is to study the isolated effect and the effect of the combination of four levels of CO2 (control 600, 800 and 1000 mmol CO2/ mol) and of four doses of potassium (100, 200, 300 and 400 kg of K2O/ha) on the net melon (Cucumis melo L.) cultivated in greenhouse and drip-irrigated. The layout will be random blocks in a scheme of strips, with 16 treatments and four repetitions, resulting from the combination between the levels of CO2 and doses of K2O. The CO2 will be applied daily, and the K2O, every three days. Parameters to be evaluated: photosynthetic rate, nutritional state of the plants, productivity, quality of the fruit and efficiency of the use of water in the melon crop cultivated in protected environment. (AU)