Cantitate/Preț
Produs

Water Productivity of Sunflower under Different Irrigation Regimes at Gezira Clay Soil, Sudan: IHE Delft PhD Thesis Series

Autor Eman Rahamtalla Ahmed Elsheikh
en Limba Engleză Paperback – 5 feb 2016
The Gezira Scheme is Sudan's oldest and largest gravity irrigation system. The scheme has played an important role in the economic development of the country, and is a major source of foreign exchange. The farming system of the Gezira Scheme is dominated by crop production. The main crops grown are sorghum, wheat, groundnut and the oilseed crop sesame. Sunflower (Helianthus annuus L.) is an important oil crop in the world and a new edible oil crop in Sudan. Knowledge of the effects of irrigation scheduling on sunflower production and water productivity under water stress conditions is becoming increasingly important. Irrigation scheduling is particularly important since many field crops are more sensitive to water deficit at specific phonological stages. Sunflower has several growth stages: emergence, vegetative, reproductive, flowering, seed formation and maturity. Water stress in each stage results in reduction in seed yield and oil content. The treatments in the test plots, which were conducted to study the effect of water stress at different growth stages, showed that sunflower was significantly affected by water stress that occurred in the sensitive flowering and seed formation stages. Highest seed yield was obtained when water stress was avoided during these stages. The AquaCrop model was used to simulate the seed yield and water productivity. The model was able to precisely simulate seed yield, but overestimated water productivity under different irrigation treatments.
Citește tot Restrânge

Din seria IHE Delft PhD Thesis Series

Preț: 29668 lei

Preț vechi: 34013 lei
-13% Nou

Puncte Express: 445

Preț estimativ în valută:
5678 5852$ 4794£

Carte tipărită la comandă

Livrare economică 04-18 martie

Preluare comenzi: 021 569.72.76

Specificații

ISBN-13: 9781138029149
ISBN-10: 1138029149
Pagini: 166
Dimensiuni: 170 x 240 mm
Greutate: 0.32 kg
Ediția:1
Editura: CRC Press
Colecția CRC Press
Seria IHE Delft PhD Thesis Series


Public țintă

Postgraduate

Cuprins

1. Summary.  2. Introduction.  3. Background.  4. Agriculture in Sudan.  5. Irrigation system in Sudan.  6. Gezira Scheme.  7. Crop coefficient of sunflower.  8. Field experiments under different irrigation regimes.  9. Water productivity under different irrigation regimes.  10. Modelling water productivity and seed yield under different irrigation regimes.
 

Descriere

Sunflower is a short duration crop and can be fitted well in the present cropping system of Sudan without bearing any major change in agriculture setup. The planting pattern plays a key role in increasing the yield of sunflowers. Flowering is the most critical stage to water stress caused by deficit irrigation. For this reason, limited irrigation in early and mid flowering stages needs to be avoided, while deficit irrigation at seed formation can be acceptable whenever irrigation water is limited.