UTILIZATION OF SOME ORGANIC POLYMERS AND HUMIC ACIDS FOR IMPROVING A SANDY SOIL PRODUCTIVITY OF PEANUT AND THEIR RESIDUAL EFFECTS ON THE NEXT CROP OF FABA BEAN | ||||
| Fayoum Journal of Agricultural Research and Development | ||||
| Article 5, Volume 19, Issue 2, July 2005, Page 55-42 PDF (513.61 K) | ||||
| Document Type: Research articles. | ||||
| DOI: 10.21608/fjard.2005.197831 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Moustafa, M.A. Abo-Zied1; Nader R. Habashy2; Anas A.A. Wahdan3 | ||||
| 1Soil Sci. Depart., Fac. of Agric., Cairo Univ., Egypt | ||||
| 2Soils, Water and Environ. Res. Inst., Agric. Res. Center, Giza, Egypt | ||||
| 3Soils and water Depart., Fac. of Agric., Cairo Univ., Fayoum Branch, Egypt. | ||||
| Abstract | ||||
| A field experiment was conducted on a cropping sequence pattern of two legume crops to avoid the residual effect of the grown crop at the next season, i.e., peanut as summer crop (Arachis hypogaea, Giza 5) followed by faba bean as a winter one (Vicia faba, Giza 2) grown on sandy soils under sprinkler irrigation system at El Ismailia Agricultural Research Station during the agricultural growing season of 2002/2003. The current study aims to identify the direct and residual beneficial effects of applying some organic polymers (carboxy methyl cellulose-CMC and polyvinylacetate-PVAc) and humic acids-(HA) on some hydrophysical and fertility status of sandy soil (bulk density, total porosity, hydraulic conductivity, moisture constants and nutrients retained) at elongation stage of vegetative growth as well as vegetative growth, yield and its attributes of the studied two crops, i.e., peanut (seed & foliage yields, harvest index, weight of 100 seed, seed oil %, protein % and uptake nutrient contents of N, P, K, Fe, Mn and Zn) and faba bean (plant height, No. of branches or leaves/plan, dry matter of stem or leaves, seed and foliage yields, harvest index, 100 seed weight, protein and uptake nutrient contents). The applied rates of organic polymers were 2 % w/w as individual or combined treatments with humic acid (solid K-humate at a rate of 50 mg kg-1), then were thoroughly mixed with the 15 cm soil surface. The results obtained indicated that the applied organic polymers and humic acid as either individual or in combined treatments (HA+PVAc and HA+CMC) showed significant and positive increases in both soil characteristics and the grown peanut parameters under investigation, with a significant superiority for the combined treatments. The beneficial influence was extended in a parallel trend to the next winter crop of faba bean as a residual effect, but with useful-less for all the previous studied soil characteristics and plant parameters. It is evident that the applied organic amendments, either as individual or together treatments, were achieved many of the beneficial effects on soil hydrophysical and fertility status as well as plant parameters, since humic acid acted like plant growth hormones. In addition, organic polymers (carboxymethylcellulose and polyvinylacetate) partially capable to retain water and nutrients for growing plants, where it would act as complexing agents, this minimizes the loss of nutrients by leaching. Thus, these chelating gents, through OH and COOH as active groups for micronutrients and water molecules, are considered as a storehouse with easily mobile or available to uptake by plant roots, and in turn reflected positively on development of yield and its attributes for both studied peanut and faba bean crops. | ||||
| Keywords | ||||
| Humic acids; organic polymers; peanut; faba bean and sandy soil | ||||
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