Effect of irrigation treatments, soil type and root-zone infrastructure on pepper plants, 2010/11
Vegetables, Soil and WaterEffect of irrigation treatments, soil type and root-zone infrastructure on pepper plants, 2010/11
תחום או ענף ירקות
תאריך עדכון 23/2/2012
Effect of irrigation treatments, soil type and root-zone infrastructure on pepper plants, 2010/11
Ityel Eviatar – Extension Service (Shaham), Ministry of Agriculture and Rural Development
D. Chashmonai, A. Oshoroviz, R. Offenbach, S. Cohen, Y. Zvieli, I. Tsabari – Central and Northern Arava R&D
Alon Ben-Gal – Gilat Research Center, Agricultural Research Organization, Ministry of Agriculture and Rural Development
Naftali Lazarovitch – Ben-Gurion University
E-mail address for correspondence: Eviatar@arava.co.il
This work is a continuation of work carried out during previous seasons concerning the development of root-zone infrastructure for vegetable crops in the Arava. The reaction of pepper plants to the conditions prevailing in the root zone was studied within a range of different volumes of saline irrigation water (2.3 dSm-1) in two soils with extremely different hydraulic characteristics: rocky soil ('Hamada') with a low level of water conductivity and sandy soil, through which water flows easily. Pepper plants of the cultivar Adom (Efal) were transplanted into a screen-house (50 mesh) at the Yair Research Station in the Arava on 20 September 2010. These plants were treated with four different levels of irrigation from 21 days after transplanting through the end of the study. The levels of irrigation: 3.1, 4.4, 5.5 and 7.5 mm per day; were kept constant throughout the period of the study. At the end of the season, 194 days after transplanting, the total volumes of irrigation water that had been applied were 634, 771, 1071 and 1399 mm . In the two soils, we set up two types of root-zone infrastructure, which differed only in the type of side-sheeting used to separate the root zones from the surrounding soil. One treatment involved Palrig soil cover, which is permeable to water and oxygen, and the other treatment involved impermeable polyethylene. The treatment in which the polyethylene side-sheeting was used yielded 10% less than the Palrig treatment. Yield in the rocky soil was approx. 15% higher than yield in the sandy soil across all of the irrigation treatments. The level of irrigation had significant effects in the two soils. In the sandy plots that were irrigated with 4.4-5.5 mm/day, fruit yield increased by approx. 20%. In the rocky plots that were irrigated with 5.5-7.3 mm/day, yield increased by approx. 15%.
Acknowledgements
We would like to thank the Plant Board for helping to fund this study and Zeraim Gedera for their donation of seed. We also extend our heartfelt thanks to all those who participated in this work.
שפה English
מלות מפתח Ben Gal
מחבר Ityel Eviatar, D. Chashmonai, A. Oshoroviz, R. Offenbach, S. Cohen, Y. Zvieli, I. Tsabari, Alon Ben-Gal, Naftali Lazarovitch
שנה 2011
שייכות yzvieli
תאריך יצירה 23/2/2012
תאריך עדכון 23/2/2012