Majd Darwish * (1)
(1). Department of Field Crops, Faculty of Agriculture, Tishreen University, Lattakia, Syria.
(*Corresponding author: Dr. Majd Darwish. E-Mail: majds26@yahoo.com).
Received: 10/07/2022 Accepted: 3/11/2022
Abstract:
The experiment was carried out at Salhab regions in Hama governorate, according to the randomized complete block design (RCBD), with three replicates during the agricultural season (2021/2022). The aim of this research was to study the effect of fertilizing with different levels (0, 75, 150, 225 and 300 kg/ha) for each of phosphorous P2O5 and potassium K2O on the growth, development and productivity of the broad bean Witty cultivar, by measuring a range of morphological and morphysiological indicators (plant height, plant leaf area, leaf area index, total chlorophyll content and photosynthesis rate), and yield (pods formation %, number of pods/plant, number of seeds/pod and seed yield (ton/ha)) and seed protein content (%). The results showed a significant difference in the response of the growth and productivity characteristics of bean cultivar plants to the levels of fertilization used. Phosphate fertilization plants at levels 75-225 kg/ha and potassium 150 kg/ha were significantly superior, either alone or together, as the compared of the other treatments in all the studied characteristics and traits. The highest seed yield of 3.56 tons/ha was recorded at the level of 150 kg/ha for both P2O5 and K2O, while the high levels of phosphate and potassium fertilization (300 kg/ha) did not have any noticeable positive effects on plant growth, development and seed yield. Thus, we suggest using the phosphate fertilization rate of 75-225 kg/ha and potassium 150 kg/ha in the conditions of the cultivation area or in other areas with similar environmental conditions.
Keywords: Faba bean, Phosphate and potassium fertilization, Yield.
Full paper in Arabic: pdf