Title:	Review of two decades of progress in the development of successful drip irrigation for onions.
Authors:	SHOCK, C. C. FEIBERT, E. B. G. PINTO, J. M.
Affiliation:	CLINTON C. SHOCK, Oregon State University Malheur Experiment Station; ERIK B. G. FEIBERT, Oregon State University Malheur Experiment Station; JOSE MARIA PINTO, CPATSA.
Date Issued:	2013
Citation:	In: IRRIGATION SHOW & EDUCATION CONFERENCE, 2013, Austin. Proceedings... Falls Church: Irrigation Association, 2013.
Description:	The irrigation needs of long day onion (Allium cepa) have been extensively studied at Ontario, Oregon, over the past 22 years. Drip irrigation has compared favorably with furrow and sprinkler irrigation systems. Onions were found to have very narrow soil moisture requirements. Drier soil than optima led to yield loss and wetter soil promoted bulb decomposition. Short term water stress at the three- to six-leaf stages of plant growth promoted multiple centers in long day onion varieties. Irrigation was successfully scheduled using soil water tension or evapotranspiration. Nitrogen fertilization and plant populations have been optimized. Drip system design must carefully consider the hydraulic conductivity of the soil in the placement of tape and onion rows since the soil moisture must wick over from the drip tape to the onion plant. The drip irrigation system design uniformity, operation, and maintenance are essential given onion?s low tolerance to water stress.
Thesagro:	Cebola Allium Cepa Irrigação por Gotejamento
Keywords:	Estresse hídrico Onion
Type of Material:	Artigo em anais e proceedings
Access:	openAccess
Appears in Collections:	Artigo em anais de congresso (CPATSA)