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Ain Shams University (2016)

EARLY PRODUCTION OF STRAWBERRY USING SOILLESS CULTURE SYSTEMS

Eissa, Enass Nabil Mohamed

Titre : EARLY PRODUCTION OF STRAWBERRY USING SOILLESS CULTURE SYSTEMS

Auteur : Eissa, Enass Nabil Mohamed.

Etablissement de soutenance : Ain Shams University

Grade : Doctor of Philosophy (PhD) in Agricultural Science (Advanced Agricultural Systems for Arid Lands) 2016

Résumé
This study was divided to two experiments : First experiment was carried out at the experimental site of Arid Land Agricultural graduate studies and Research Institute (ALARI), Faculty of Agriculture, Ain Shams University, Qalyobia Governorate. Second experiment was carried out at Central Laboratory for Agricultural Climate (CLAC), Agriculture Research Center (ARC), Giza Governorate. The experiments were carried out during the two successive seasons of 2013/2014 and 2014/2015. Fresh bare root strawberry (Fragaria x ananassa) transplants cv. Festival were used in both experiments. The aim of the study was to determine the best irrigation scheduling and better strawberry density to get the best production and quality of strawberry fruits grown in soilless culture systems (A-shape ‘NFT system’, substrate system ‘Bed system’). First experiment : Five irrigation schedule have been tested in relation to production and quality of strawberry as follow (Control 24 hours), Sched 1(¼ / ½ hour), Sched 2 (¼ / 1 hour), Sched 3 (¼ / 2 hours), Sched 4 (¼ / 3 hours) and two plant densities per square meter have been tested in this experiment as follow (21 plants / m2 “PD-1”, 32 plants / m2 “PD-2”) and the combinations among them were tested in this experiment. Five irrigation schedules and two plant densities per square meter were tested to perform 10 interactions as follows :- 1. 24 hours + PD-1 (control 1) 2. 24 hours + PD-2 (control 2) 3. Sched 1+ PD-1 4. Sched 1+ PD-2 5. Sched 2+ PD-1 6. Sched 2+ PD-2 7. Sched 3+ PD-1 8. Sched 3+ PD-2 9. Sched 4+ PD-1 10. Sched 4+ PD-2 Second experiment : Two irrigation schedule have been tested in relation to production and quality of strawberry as follow (Sched 1 (¼ / 2 hours), Sched 2 (¼ / 3 hours) and two plant densities per square meter have been tested in this experiment as follow (12 plants / m2 “PD-1”, 18 plants / m2 “PD-2”). Two irrigation schedules and two plant densities per square meter were tested to perform 4 interactions as follows :- 1. Sched 1+ PD-1 2. Sched 1+ PD-2 3. Sched 2+ PD-1 4. Sched 2+ PD-2 The EC of the nutrient solution was adjusted at the range of 2.0 – 2.5 m.mhos-2 and pH was maintained at the range of 5.5-6.0 throughout the experimental time. The measurements recorded were as follows : vegetative growth measurements include number of leaves, total chlorophyll of leaves, leaves fresh weight, leaves dry weight, root fresh weight and root dry weight. Productivity measurements include number of flowers/plant, number of fruits/plant, % of fruit set, early yield (g/plant), total yield (g/plant), mean fruit weight (g), marketable yield (g/plant), marketable yield (%), unmarketable yield (g/plant) and unmarketable yield (%). Quality measurements include total soluble solids (TSS), ascorbic acid and titratable acidity. Chemicals measurements include macro and micro-nutrient concentration in the leaves. Water measurements include water consumption.

Présentation étendue (EULC)

Page publiée le 22 février 2019