Author: Kagabo Desire MbarushimanaPublisher:
ISBN:
Category : Irrigation
Languages : en
Pages : 202
Book Description
Modelling the Soil Water Balance of Potatoes for Improved Irrigation Management
Author: Kagabo Desire MbarushimanaPublisher:
ISBN:
Category : Irrigation
Languages : en
Pages : 202
Book Description
Crop growth and soil water balance modeling to explore water management options
Author: Ines, A. V. M.Droogers, P.Makin, I. W.Das Gupta, A.Publisher: IWMI
ISBN: 9290904585
Category : Crops
Languages : en
Pages : 35
Book Description
The study was on the performance of the decision support system for agrotechnology transfer (DSSAT) and the soil water atmosphere plant (SWAP) under an acid sulphate soil. The comparison of these models was done as a prerequisite to the selection of an appropriate model, which is capable of simulating water management scenarios, water balance and crop growth, to be coupled with an adaptive optimization algorithm that can be used to explore water management options.
Potato Irrigation Management
Author: Bradley Albert KingPublisher:
ISBN:
Category : Potatoes
Languages : en
Pages : 20
Book Description
Water Management in Potato Production
Author: Haverkort, A.J.Publisher: International Potato Center
ISBN:
Category :
Languages : en
Pages : 28
Book Description
Water Management in Potato Production
Author: Ana Felisa Garay IralaPublisher:
ISBN:
Category : Irrigation
Languages : en
Pages : 178
Book Description
Partial Root-Zone Drying: An Alternative Irrigation Management to Improve the Water Use Efficiency of Potato Crops
Author: Adolfo PosadasPublisher: International Potato Center
ISBN: 9789290603603
Category :
Languages : en
Pages : 24
Book Description
A Simple Soil Water Balance Model for Operational Use in Tactical and Strategic Models for Management of Limited Irrigation Water. Annual Report
Author: R. RagabSoil Water Balance Modelling in Agriculture
Author: Development of a Water Management-yield Simulation Model for Potatoes
Author: Fadi KamandPublisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 542
Book Description
Modelling the Soil Water Balance to Improve Irrigation Management of Traditional Irrigation Schemes in Ethiopia
Author: Eticha Birdo GeremewPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Traditional irrigation was practiced in Ethiopia since time immemorial. Despite this, water productivity in the sector remained low. A survey on the Godino irrigation scheme revealed that farmers used the same amount of water and intervals, regardless of crop species and growth stage. In an effort to improve the water productivity, two traditional irrigation scheduling methods were compared with two scientific methods, using furrow irrigation. The growth performance and tuber yield of potato (cv. Awash) revealed that irrigation scheduling using a neutron probe significantly outperformed the traditional methods, followed by the SWB model Irrigation Calendar. Since the NP method involves high initial cost and skills, the use of the SWB Calendar is suggested as replacement for the traditional methods. SWB is a generic crop growth model that requires parameters specific to each crop, to be determined experimentally before it could be used for irrigation scheduling. It also accurately describes deficit irrigation strategies where water supply is limited. Field trials to evaluate four potato cultivars for growth performance and assimilate partitioning, and onions' critical growth stages to water stress were conducted. Crop-specific parameters were also generated. Potato and onion crops are widely grown at the Godino scheme where water scarcity is a major constraint. These crop-specific parameters were used to calibrate and evaluate SWB model simulations. Results revealed that SWB model simulations for Top dry matter (TDM), Harvestable dry matter (HDM), Leaf area index (LAI), soil water deficit (SWD) and Fractional interception (FI) fitted well with measured data, with a high degree of statistical accuracy. The response of onions to water stress showed that bulb development (70-110 DATP) and bulb maturity (110-145) stages were most critical to water stress, which resulted in a significant reduction in onion growth and bulb yields. SWB also showed that onion yield was most sensitive to water stress during these two stages. An irrigation calendar, using the SWB model, was developed for five different schemes in Ethiopia, using long-term weather data and crop-specific parameters for potatoes and onions. The calendars revealed that water depth varied, depending on climate, crop type and growth stage.