crop production function and irrigation water allocation using old and new fao methods in zayandeh rud irrigation system

Study on Water Resources Optimal Allocation of Irrigation District and Irrigation Decision Support System

This paper develops the system of optimal allocation of water resources in irrigation district and irrigation decision support which integrates technologies of decision support, information management, information search and so on. It has the multi-function of water production function calculation, crop water requirement calculation, water resources optimal allocation and realtime amending the ...

Model and Production Function for Irrigation Management

A simulation model was developed to estimate the effect of deficit irrigation upon crop yield. The model was designed to provide relative yield estimates for numerous combinations of irrigation system, crop growth and irrigation management parameters. A daily soil moisture balance was used to predict evaporation and transpiration from which crop yields were estimated. Gross irrigation water req...

G93-1154 Crop Residue and Irrigation Water Management

Effect of deficit irrigation on crop growth, yield and quality of onion in subsurface drip irrigation

Indiahas the largest area under onion (Allium cepa) crop but its average productivity (14.21 t ha-1) is considerably lower than the world’s average of 19.4 t ha-1. Besides low productivity, irrigation efficiencies are also very low i.e. 30-35% in India. Managing onion crop with less than adequate irrigation water availability is a challenge in several parts of the country. Options of i) deficit...

Aural irrigation using the OtoClear Safe Irrigation System in children.

OBJECTIVE To evaluate the safety and efficacy of the OtoClear Safe Irrigation System for removing cerumen from the external auditory canal in children. METHODS Eligible subjects were 6 months-17 years of age with cerumen obstructing > or = 50% of the tympanic membrane (TM) from view (by otoscopy). Pneumatic otoscopy, tympanometry, and audiometry were performed followed by cleansing of the aff...

Response of tomato to irrigation with saline water applied by different irrigation methods and water management stratigies

In a field experiment the effects of irrigation with saline drainage water (seasonal average of 4.5 dS/m) and non-saline water (0.55 dS/m) applied by two different water management strategies (cyclic or blended saline water with non-saline water in different ratios) and two different irrigation methods (drip or furrow) were studied on growth and productivity of tomato (Lycopersicon esculentum M...