PHYSIOLOGICAL STUDIES ON SUGAR PEA: EFFECT OF PLANT DENSITY AND SOME NATURAL SUBSTANCES AS FOLIAR APPLICATIONS ON GROWTH, POD YIELD AND QUALITY. | ||||
| Journal of Plant Production | ||||
| Article 13, Volume 5, Issue 7, July 2014, Page 1259-1281 PDF (841.1 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2014.64551 | ||||
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| Authors | ||||
| Hala A. El-Sayed1; M. M. B. Shokr2; M. A. A. EL-Sherbini2 | ||||
| 1Veg. and Flori. Dept., Fac. of Agric., Mans. Univ., Egypt. | ||||
| 2Veg. Res. Dept., Hort. Res. Inst., Agric. Res. Center, Giza, Egypt. | ||||
| Abstract | ||||
| Two field experiments were conducted at Private Farm in EL-Salheya, SharKia Governorate, Egypt during winter seasons of 2012/2013 and 2013/2014 to study the effect of plant density and some foliar applications, i.e., moringa leaf extract (MLE), chitosan at 150 ppm and silicon at 200 ppm on vegetative growth, pod yield and quality of snow pea cultivars, i.e. “Compados and Snow Wind” and sugar snap pea cultivar “Sugar Snap”. The results showed that Compados cultivar had more leaves and branches, longest plant height, heaviest fresh and dry weight, largest leaf area, and gave the highest pod length and pod yield (ton/fed.) compared with other cultivars in the two seasons. Whereas, the least one was Sugar Snap cultivar in both seasons. Moreover, Sugar Snap cultivar was the highest in pod thickness, total soluble solids (TSS) and carbohydrates (%) and the lowest in titrable acidity (%) in both seasons. While, Snow Wind was the superior in vitamin C (mg/100g fw) in both seasons. Meanwhile, plant density (20 cm apart) gave the highest plants and total pod yield/fed. compare with other densities (40 and 60 cm) at the two seasons whereas, (60 cm apart) gave the highest values in all studied parameters except plant height and total pod yield/fed followed by (40 cm apart plants) in both seasons. All foliar applications significantly increased all the studied parameters compared to the control treatment. The superior application was moringa leaf extract (MLE) followed by chitosan and silicon in both seasons, respectively. From the obtained results it could be concluded that Compados cultivar was the highest pod yield/plant, and total yield/fed. when cultivated on 20 cm apart, meanwhile Sugar Snap cultivar gave the best pod quality when cultivated on 60 cm apart and sprayed with moringa leaf extract three times, i.e., 15 days after planting then repeated each 15 days interval, respectively. | ||||
| Keywords | ||||
| Sugar pea; moringa leaf extract; Chitosan; silicon; Growth; pod yield; Quality | ||||
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