WHEAT RESPONSE TO ASCORBIC ACID UNDER DIFFERENT SOIL WATER STRESS | ||||
| Journal of Soil Sciences and Agricultural Engineering | ||||
| Article 4, Volume 27, Issue 6, June 2002, Page 4205-4219 PDF (4.32 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jssae.2002.255137 | ||||
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| Author | ||||
| S.A. Abd EI-Wahab | ||||
| Soils, Waters and Environment Research Institute | ||||
| Abstract | ||||
| A field experiment was conducted at Sakha Agricultural Res. Station during 1998/1999 to' study the effect of ascorbic acid (C, = 1000, C2 = 3000 ppm as foliar spraying), and soil moisture stress (01 = 50%, 02 = 70% and 03 = 90% depletion) on . yield, yield components, and consumptive use indices of some wheat varieties (Vl = Sakha 8: V2 = Sakha 61 and V3 = Sakha 69). Results could be summarized as follows: * Irrigation at 50% deple~ion produced greater values of grain and straw yields, number of spikes/m , number of grains/spike, and 1000 grain weight than at 70% and 90% depletion. * The variety of Sakha 69 was superieur when compared with Sakha 8, and Sakha 61 for grain and strawyields, number of splkes/rn", and number of grains/spike, while Sakha '61 had the gre~test value of 1000-grain weight. * . The 1000 ppm ascorbic acid (as foliar spraying) resulted in greater values of grain yjeld, No.· of splkes/m" and 1000 grain weight than those obtained by 3000 ppm, -which has the greatest values of straw yield, and No. of grains/spike. . * The combined interaction (0 x V x C) showed significantly positive effect on yield and agronomic traits of wheat crop. The values of grain and straw yields as well as 1000 grain-weight reached maximum (3.487, 5.957 ton/fed. and 52.3 gm, respectively) by treatment (01 xV, . x e1) whereas the treatment (02 'x V3 X C1) and (02 x V2 X C~) recorded the . greatest, values pf· 467 and 41.87· for : No. of spikes/rn'' and No. of grains/spike, respectively. For consumptive use indices, it was cleared that water consumptive use (Cu) was decreased with increasing soil moisture depletion and the greatest (41.12 cm) was obtained at treatment 50% depletion compared with 25.48 cm for 90% depletion, . Irrigation at 90% depletion resulted in significant value of W,U,E. (2.29 kg/m3) in comparison to 50% (1.67 kg/m3) and 70% (1.97 kg/m\ The greatest values of moisture uptake from the surface layers were 38.25%, 32.83%, and 32.36% with water treatments 01,02, and 03, respectively. * For seasonal values of crop coefficient (Kc), generally Blaney-Criddle equation gave over estimated values (1.108, 0.862, and 0.647 for 01,02 and 03) while Penman and Radiation equations recorded the same values approximately and then each of them can be suitable for using in the studied area. | ||||
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