Two field experiments were carried out during winter seasons of 2010 -2011 and 2011-2012, at the Experimental Farm of El Kassasein Horticultural Research Station, Ismailia Governorate, Egypt, to study the effect of NPK levels (25, 50 and 100 % of recommended dose), foliar applications (Control, HA, EM and HA+ EM) and magnetite levels (without and 150 kg/fed.) on growth, yield and its components of pea plants (Pisum sativum L.) cv. Master B under sandy soil conditions.Results indicated that increasing NPK fertilizer levels up to 100% recommended dose cause a significant increases in plant growth (plant height, number of branches and leaves/plant and dry weight/plant ) and yield and its components (pod length, number of seeds/pod, weight of 100 seeds and green pods yield/fed).Spraying pea plants with a mixture of HA+ EM gave the highest values of vegetative growth parameters and yield and its components. In the same trends, treated plants with magnetite recorded the highest values of vegetative growth and yield and its components as compared to untreated plants.application of 50% NPK and spraying plants with humic acid + EM plus magnetite at 150 kg/fed recorded higher values of plant growth and green pod yield per feddan as compared to 100% NPK alone (control) without significant difference between both treatments. Fertilizing pea plants with 100% NPK and spraying plants with combination of humic acid + EM with application of 150 kg/fed magnetite gave the highest values of plant growth parameters, yield and its components as compared to other interaction treatments.
Two field experiments were conducted at a Private Farm near Aga, Dakahlia Governorate during two successive winter seasons of 2012/2013 and 2013/2014 to investigate the effect of bio-fertilizers inoculation method, some foliar application treatments and their interactions on vegetative growth characters, chemical constituents, yield and quality traits of pea (Pisum sativum L.). Four inoculation methods of bio-fertilizers (mixture of Rhizobium leguminosarum, Bacillus megatherium and Bacillus circulans) , i.e, without inoculation, seeds inoculation pre-sowing, soil inoculation after germination and dual inoculation (seeds plus soil) and four foliar application treatments (control, seaweed extract at 2.5 ml/l, ascorbic acid at 200 ppm and yeast extract at 5 g/l). The data were recorded for yield and its components (pod length, pods weight/plant, No. of pods/plant, No. of green seeds/pod, weight of 100 green seeds and total yield/ fed.). Chemical constituents (N, P and K%) in leaves and pods. Pods quality (carbohydrates, crude protein, reducing, non reducing sugar and total sugar).Obtained results showed that dual inoculation (seeds pre-sowing and soil after germination) combined with yeast extract as a foliar application surpassed other treatments in yield and its components, pods quality parameters and chemical constituents of leaves and pods.
This experiment was conducted in summer seasons of 2016 and 2017 on tomato plants "6112" hybrid to evaluate tomato plants performance (vegetative growth characteristics and chemical constituents of leaves) in response to irrigation water treatments (magnetized and non-magnetized), foliar applications (chitosan, lithovit, selenium and yeast extract) and their interactions. Results indicated that the highest values of vegetative growth characteristics, i.e., plant height, number of branches, number of leaves, leaf area, fresh and dry weights as well as chemical constituents of leaves as photosynthetic pigments (Chl. a, Chl. b, total Chl. a+b and carotenoids) and leaf minerals content (N, P, K, Ca, Mg, Zn, Mn) were recorded when plants irrigated with magnetized water as compared with plants irrigated with untreated water in both studying seasons. On the other hand, Fe content responded negatively to irrigation with magnetized water.Comparing the effect of foliar applications, all foliar application treatments significantly enhanced vegetative growth parameters, leaf minerals and pigments contents compared to the check treatment. Foliar application of chitosan at 250 ppm is the superior in its effect on all the aforementioned characteristics followed by yeast extract at 10 g/L then lithovit at 1.5 g/L in the two seasons except for Fe content. The best results of both vegetative growth attributes and chemical constituents of leaves were recorded when plants irrigated with magnetized water and sprayed with chitosan at 250 ppm in both seasons. Thus, this treatment could be recommended to improve tomato plants performance under similar conditions of this study.
Two successive field experiments were conducted in a private farm at Gemiana village near El-Mansoura city, Dakahlia Government, Egypt, during seasons of 2009 and 2010 to evaluate the effect of two rates of chicken manure combined with bio-fertilizers, mineral fertilizers and some foliar application treatments as well as their interactions on vegetative growth parameters (Plant height, No. of branches/plant, No. of leaves/plant, Fresh and Dry weights)and some chemical constitutes of tomato leaves (Lycopersicon esculentum) "Nada" hybrid under drip irrigation system.The obtained results showed that the mean values of plant height, number of leaves and branches/plant, fresh and dry weights of tomato plants, N, P, K% in the leaves, chlorophyll a, b and total chlorophyll were increased due to increasing chicken manure rate up to 6 ton/fed. + bio fertilizer mixture during both seasons of the experimentation. Also, the highest mean values of vegetative growth parameters, N, P and K percentages, chlorophyll a, b and total chlorophyll in leaves under study were obtained with increasing NPK level from 0 up to 50% of the recommended dose (RD) during both seasons.The highest significant values of the aforementioned parameters were recorded with spraying plants by seaweed extract (2.5 ml/L.) followed by spraying yeast extract (5 g/L.). These increases were true in the two seasons of the study.The study showed that the best results of vegetative growth parameters and N, P and K percentages in the leaves, chlorophyll a, b and total chlorophyll were recorded with adding 6 ton/fed. chicken manure + bio fertilizer mixture with 50% NPK from recommended dose and spraying seaweed extract during both seasons.
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.
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