EFFECT OF SEAWEED EXTRACT AND AMINO ACIDS ON GROWTH AND PRODUCTIVITY AND SOME BIOCOSTITUENTS OF COMMON BEAN (Phaseolus vulgaris L) PLANTS

Abstract

Two filed experiments were carried out at a private farm in Behaira Governorate, Egypt during 2012 and 2013 summer seasons. Experiments aimed to study the effect of two widely marketing (commercial safe compounds). First, is a seaweed extract (with commercial name of sea weed) at 1, 2 and 4 ml/l while the second is a mixture of free amino acids (with plant origin and commercially name is sway) at 2,4and 8 ml/l and seaweed at 2 ml/l + amino acids at 4 ml/. The two compounds were applied as foliar spray three times on common bean plant (Phaseolus vulgaris L.) starting at 25 days of plant age with 10 days intervals between each spray and others. The obtained results clearly indicate that different applied treatments increased estimated or measured growth characteristics i.e., plant height, stem diameter, number of branches and leaves/ plant, total leaf area /plant, dry weight of shoots and specific growth rate as well as paralley increase of photosynthetic pigments and total chlorophyll SPDS with increasing seaweed and amino acid sprayed levels at the age of 65 days after sowing during 2012 and 2013 seasons. As for the yield and yield components i.e., number of pods/plant, pod weight (g) , number of seeds per pod, number of fully seeds /plant, , weight of 100 seeds (g), number of seeds/ plant, seed yield (g) /plant and the harvest index. Also, biochemical constituents of N, P, K, Mg, Ca, Fe, Zn, Total carbohydrates and crude protein in leaves at 65 days of plant age were existed in the two assigned seasons. In addition, the most effective treatments was that of sea weed at 2 ml/l combined with the amino acids at 4 ml/l was the most effective treatment in this respect.

Changes in Biochemistry and Yield in Response to Biostimulants Applied in Bean (Phaseolus vulgaris L.)

“…In our research, the use of biostimulants based on amino acids and seaweed extracts had a positive effect on the nutritional value of beans by increasing their protein content. Application of seaweed extract and amino acids had a positive effect on increasing the protein content in bean, pea, and faba bean seeds [59,71,74,78,80]. This was confirmed by Rouphael [62]; in their research, the increase in protein content in spinach plants was obtained after using biostimulants containing an extract of Ecklonia maxima and Ascophyllum nodosum and legume-derived protein hydrolysate.…”

“…Use of extracts from Kappaphycus alvarezii and A. nodosum increased the number of pods, seeds, and yield in soybean [68,69], even under stress conditions (reduced NPK fertilization) [70]. Bean plants reacted favorably to the foliar application of Caulerpa racemosa and A. nodosum extract by increasing the number of pods and seeds, one thousand weight of bean, and seed yield in common beans [71,72], mung beans [73], and broad beans [74].…”

“…The plants increased the number of pods and seeds, as well as the seed yield; however, no effect of this biostimulant was found for the weight of one thousand seeds. Foliar application of biostimulants containing amino acids increased the number of pods and seeds, weight of one thousand seeds, and yield in seeds of beans [71,77], peas [78], and broad beans [79,80].…”

Application of Bio-Stimulants in Comparison with Organic and Mineral N Fertilizers for Growth Promotion of Spinach and Common Bean Grown on Sandy Soil

“…Consequently, many parameters of vegetative growth as well as plant yield, nutrient content and fruit quality were improved by application of these three commercial organic fertilizers (Souri and Aslani 2018). Common bean grown in North West delta showed positive and significant effect of seaweed extract applied solely or in combination with amino acids where the highest yield and yield components as well as the harvest index were detected at harvest time (Zewail, 2014).…”

“…Under Egyptian conditions, Zewail, (2014) found that nitrogen, phosphorus and potassium concentrations in common bean leaves were highly significantly increased with addition of seaweed extract combined with amino acids (2 m l -1 seaweed + 4 ml l -1 amino aicds).…”