Liquid distribution of air induction and off-center spray nozzles under different conditions

Planta Daninha

Generalitat de Catalunya¹  Solanelles, F.¹  Machado, M.S.¹  Filat, A.¹  UFV¹  Universidade Federal de Viçosa, Viçosa¹  Viana, R.G.¹  Ferreira, L.R.¹  Rosell, J.R.¹  Universitat de Lleida, España¹  Machado, A.F.L.¹  Silva, M.C.C.¹ 

关键词: bar;    spray boom;    pre-emergent;    uniform application;    seedlings.;   

DOI  :  10.1590/S0100-83582010000200023

学科分类：农业科学（综合）

来源: Sociedade Brasileira da Ciencia das Plantas Daninhas (S B C P D) / Brazilian Society of Herb Science

【 摘 要 】

The objective of this work was to evaluate the liquid distribution of air induction and off-center AIUB 8502 spray nozzles under different operating conditions. Individual profile, spray nozzle outflow, spray angle, spray width and simulated distribution profile for two AIUB 8502 nozzles at working pressures of 200, 300, 400 and 500 kPa, height of 30, 40 and 50 cm from the target and 30 to 100 cm spacing were evaluated. All the tests were performed following ISO 5682-1 with some adaptations. The nozzles presented an eccentric liquid distribution with a discontinuous side and eccentric opposing end, with sharp decrease in volume. Profile distribution increased with increased bar height and working pressure. The largest number of uniform configurations was obtained at the height of 50 cm, decreasing at the heights of 40 and 30 cm. Angle and flow rate of the off-center nozzle increased with increase in pressure, with no differences between discontinuous and total angles between 400 and 500 kPa, and 200 and 300 kPa pressure ranges.

【 授权许可】

Unknown