Development vegetative, reproductive and physiological evaluation of irrigated cotton and drought in function of silicate fertilization

• Grant number: 19/10673-9
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: November 01, 2019
• End date: October 31, 2022
• Field of knowledge: Agronomical Sciences - Agronomy - Crop Science
• Principal Investigator: Samuel Ferrari
• Grantee: Luís Guilherme Delovo Carara
• Host Institution: Faculdade de Ciências Agrárias e Tecnológicas. Universidade Estadual Paulista (UNESP). Campus de Dracena. Dracena , SP, Brazil

Abstract

Silicon plays an important role in ambient plant relationships because it can provide crops with better conditions to withstand soil, climatic and biological adversities, resulting in higher yield. The objective of this work was to evaluate the physiological, vegetative and reproductive effects of foliar silicate fertilization in the irrigated cotton and drought. The experimental design will be in randomized blocks in a factorial scheme with subdivided plots, with four replications. The plots will be composed by the use of irrigation in the cotton or by the conduction of the crop in the rainforest. The subplots will be composed of the silicon doses (0, 55, 110, 220, 440 g Si ha-1) applied through the leaf and divided into three applications. In the full flowering of the cotton, indirect measurements of chlorophyll content, net assimilation rate of CO2, stomatal conductance, internal CO2 concentration in the sub-static chamber, transpiration rate in leaves, internal leaf temperature and water use efficiency will be performed. Plant height, stem diameter, number of nodes and length of branches will be evaluated in the full bloom and in the maturity of the cotton. At the maturity of the cotton will determine the components of production and cotton seed yield. The data will be submitted to analysis of variance and later to the polynomial regression analysis for the quantitative factor and Tukey test for the qualitative factor at 5% probability. (AU)