EVALUATION OF SOME CHEMICAL AND MECHANICAL WEED CONTROL METHODS ON ASSOCIATED WEEDS, GROWTH, YIELD AND QUALITY OF SUGAR BEET UNDER NEWLY RECLAIMED SANDY SOIL AT NUBARIYA | ||||
| Journal of Plant Production | ||||
| Article 12, Volume 28, Issue 1, January 2003, Page 79-93 PDF (4.22 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2003.241866 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Salwa S. M. Gaweesh, | ||||
| Botany Department, National Research Centre, Dokki, Cairo, Egypt | ||||
| Abstract | ||||
| Two field trials were carried out during 1998/99 and 1999/2000 seasons to evaluate the effect of some chemical and mechanical weed control methods on growth, yield and juice quality as well as associated weeds of sugar beet (Beta vulgaris, L.) grown in newly reclaimed sandy soil at Nubariya. The most important results obtained could be summarized as follows: - All weed control treatments reduced significantly fresh weight of sugar beet weeds as compared to the unweeded treatment. - Metamitron was the most effective herbicide on controlling weeds followed by chloridazon and hand hoeing 3 times, respectively. - Addition of one hand hoeing improved drastically the efficiency of the two applied herbicides with two concentrations in controlling sugar beet weeds when compared with other treatments. - The results showed that Metamitron at rate of 2 kg/fed plus one hand hoeing resulted in good control of total weeds after 20 and 24 weeks from sowing. - Data indicated that the photosynthetic pigments chl.a, chl.b and carotenoids significantly decreased due to all herbicidal treated plots than the plots of hoeing treatment. Hand hoeing treatment raised significantly photosynthetic pigments as compared with the untreated control plants after 18 weeks from sowing. - All growth criteria i.e., plant height (ern), LAI, leaves number/plant, root/top ratio and root characters responded significantly to 2 kgs Metamitron/fed + one hoeing followed by Chloridazon 2 kg/fed + one hoeing and hand hoeing 3-times, respectively, as compared with the untreated control treatment. - Concerning the effect of weed control treatments on yield components of sugar beet plants, corresponding data cleared that 2 kgs Metamitron/fed + one hand hoeing gave the highest values of tops, roots, biological and sugar yields. - Application of 2 kgs Metamitron/fed + one hand hoeing caused significant increases in values of juice quality parameters I.e., T.S.S., sucrose and purity % as compared with the untreated control treatment. - Generally, it can be concluded that addition of one hand hoeing to 2 kgs Metamitron/fed or 2 kgs Chloridazon/fed were the recommended treatments for obtaining the highest growth, yield and juice quality of sugar beet plants as well as significant reduction in total weeds under newly reclaimed sandy soil at Nubariya. | ||||
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