SUMMARY The water driven crop growth model AquaCrop was evaluated for predicting the yield of kharif maize (i.e. sown in monsoon season) under future availability scenarios. Future climatic data were generated using climate generator ClimGen, which parameterized 37 years (1972–2008) historical relating to study area. used first CROPWAT estimate irrigation schedule, then validated predict grain years. Rainfall estimates by ClimGen 2012 (739 mm) and 2014 (625 resulted yields 1600 5670 kg/ha,...

Venturi injector is a commonly used device for fertilizer application through drip irrigation. The injection rate of venturi mainly depends upon the suction created due to difference between its upstream and downstream pressures. A commercially available was evaluated under range operating pressures from 1.0 2.0 kg.cm-2 using normal irrigation water solution. Maximum with 106.4 l.h-1 at pressure kg.cm-2. (105.8 l.h-1), when urea dissolved in ratio 0.25:1 (urea: water) 0.1 kg.cm-2,...

Abstract Performance evaluation of irrigation has been an important area research for better management water resources. The present study was conducted to evaluate the effect drip lateral lengths and system operating pressures on fertilizer application uniformity at Indian Agricultural Research Institute (IARI), New Delhi, India. following parameters nutrients were studied design performance systems: (i) coefficient; (ii) discharge variation; (iii) distribution uniformity; (iv) statistical...

The decision support system (DSS), namely Design of Micro Irrigation Systems (DOMIS) has been developed to design drip, sprinkler and micro-sprinkler irrigation systems.This provides expert opinion for optimal layout plans MI by using the necessary data on crops, soil characteristics, groundwater agri-climatic conditions as default options with a provision modify preferred user.The includes selection pipe sizes, pumping system, filters fertilizer application systems along possible shifts per...

Abstract This study was conducted to utilize municipal wastewater through surface and subsurface (15 30 cm) drip systems. Wastewater treated though media type, disk type combined filters. The field experiment for two years with groundwater. Root length density (RLD), leaf area index (LAI), fruit yield dry matter recorded. LAI lower under during the initial 55 days after transplantation, but in later stages it significantly higher comparison drip. Highest RLD of 3.6 cm –3 recorded at depth....

Soil moisture sensor is an instrument for quick measurements of soil content in the crop root zone on real time basis. The main objective this research was development and evaluation indigenous precise irrigation scheduling. various parts developed were ceramic cup, acrylic pipe, level sensor, tee, reducer, gland, cork, end cap. designed system successfully tested okra calibrated with frequency domain reflectometry (FDR) by three methods irrigation, i.e. check basin, furrow drip,...

Generation of wastewater in huge amounts is putting a lot pressure on irrigation engineers for its safe disposal or reuse agriculture. Though could contribute to major and minor nutritional requirement crops, but the presence microbial contaminants toxic elements limits use. Utilization through drip system seems be good choice reduce chances contamination due restricted quantity water application. Since clogging such situation would main problem, remediation required enhanced utilization...

With a view to enhancing water use efficiency on farmers' fields in the Indo-Gangetic Plain (IGP), research project was taken up with involvement of farmers through participatory rural appraisal (PRA) technique. Based PRA and field observations different cultural practices, gaps between existing appropriate management technologies were established. Suitable interventions made fill enhance at level. The included laser leveling, renovation watercourses, determination optimal sowing dates for...

A field experiment was conducted at the experimental area of Indian Agricultural Research Institute, New Delhi, during kharif season 2012- 2014 to evaluate effect different crop geometries and irrigation methods on yield water use efficiency bottle gourd (Lagenaria Sicenaria L.). The consisted three (G1 - row distance 3m plant 0.5m, G2 2m 0.75m G3 1m 1.5m) with two (I1- ridge & furrow I2 – check basin). Results revealed that, were significantly affected by both planting geometries. Ridge...