Response of Sweet Pepper Plants (Vegetative Growth and Leaf Chemical Constituents) to Organic, Biofertilizers and Some Foliar Application Treatments.

Abstract

This investigation was conducted in the two successive summer seasons of 2010 and 2011 on sweet pepper plants "Madir" hybride at a private farm at Sahragt El-Soghra near Mansoura, Dakahlia Governorate, Egypt to study the effect of two sources of organic fertilizers (chicken manure and compost), biofertilizers (a mixture of Azotobacter chroococcum and Bacillus circulans bacteria and Mycorrhiza fungi), some foliar application treatments (seaweed extract, yeast extract and humic acid) and their interaction on vegetative characteristics and chemical constituents of leaves. Results indicated that the highest values of vegetative parameters, i.e., plant height, number of leaves, number of branches, leaf area, fresh and dry weights as well as chemical constituents of leaves, i.e., chlorophylls (Chl. a, Chl. b and total Chl. a+b), N, P and K percentages were recorded when plants supplied with chicken manure at 2.43 ton/fed. as compared with compost in the two seasons. Plants in the presence of biofertilizers recorded better growth performance and higher values of chemical composition in leaves than untreated plants in the two seasons. Comparing the effect of foliar applications, seaweed extract at 2.5 ml/L or yeast extract at 5 g/L recorded the highest significant values of most formentioned parameters compared with the control in both seasons. in addition, spraying humic acid at 1.5 ml/L came in the second order and significantly increased number of branches, fresh and dry weights in both seasons and leaf area in the second season as compared with the check treatment. The best results of both vegetative parameters and chemical constituents were recorded when plants fertilized with chicken manure at 2.43 ton/fed. and sprayed with either seaweed extract at 2.5 ml/L or yeast extract at 5 g/L in the presence of biofertilizers in both seasons. Therefore, this treatment could be recommended for improving sweet pepper performance under similar conditions of this study.

Effect of Biofertilizers Inoculation Methods and Some Foliar Application Treatments on Yield and Quality of Pea Plants

“…The positive effects of seaweed treatment on the content of sugars and carbohydrates may be due to its enhancable effect on leaf area (photosynthetic surfaces), content of chlorophylls and content of some important minerals as shown by Dawa et al (2013) on pepper, similar findings was reported by Rathore et al (2009) on soybean and Hamed (2012) on snap bean. While the positive effect of yeast extract on quality parameters of pea is due to that yeast preparation contained carbohydrates, sugars, proteins, fatty acids, amino acids, hormones, macro and micro elements in suitable balance.…”

“…The obtained increment of yield and its components may be due to increase of vegetative growth characters. Hence vigorous growth increase in turn the amount of metabolites synthesized and dry matter accumulation by the plants as mentioned by Dawa et al (2008) on pea and Dawa et al (2013) on pepper. Moreover, the increase in total green pod yield owe directly to increase in both number and weight of pods as well as green pod yield/plant.…”

Effect of Chicken Manure Combined With Bio-Fertilizers, Mineral Fertilizer and Some Foliar Applications On: 1- Vegetative Growth and Some Chemical Constituents of Tomato Leaves.

“…Our finding connected with findings of Bhat et al (2010) who showed that the use of seaweed as an organic amendment increased the total chlorophyll content in tomato. Also Hamed (1997), El-Aidy et al (2002) and Dawa et al(2012) they indictaed that foliar application with seaweed extract increased N, P and K percentages in sweet pepper leaves.…”

“…The same trend was obtained in the 2 nd season, similar results on tomato plants were obtained by Patil et al (2004), Bayoumi (2005), Jagadeesha (2008), Mahila et al (2010). Also, Dawa et al (2012) on pepper plant found that foliar application of seaweed extract with chicken manure as a source of organic fertilization in presence of bio fertilizers enhanced vegetative plant growth, N, P and K percentages in leaves. Khan et al (2012) reported that biofertilizers (Azotobacter+ Azospirillum) combined with organic fertilizer+ 100% recommended N gave the highest values of plant height and number of leaves of pepper plants than using organic or bio-fertilizers alone.…”

“…However, Foliar application of yeast extract and seaweed extract on tomato plants increased vegetative growth parameters and N, P, and K percentages in leaves as shown by many researchers ( El-Sayed et al , (2010) ; Abou El-Yazied and Mady , (2011)). Also, Dawa et al (2012) on pepper plant found that foliar application of seaweed extract with chicken manure as a source of organic fertilization in presence of bio fertilizers enhanced vegetative plant growth, N, P and K percentages in leaves.…”