Ghoneim, A. (2020). Soil Nutrients Availability, Rice Productivity and Water Saving under Deficit Irrigation Conditions. Journal of Plant Production, 11(1), 7-16. doi: 10.21608/jpp.2020.77983
A. M. Ghoneim. "Soil Nutrients Availability, Rice Productivity and Water Saving under Deficit Irrigation Conditions". Journal of Plant Production, 11, 1, 2020, 7-16. doi: 10.21608/jpp.2020.77983
Ghoneim, A. (2020). 'Soil Nutrients Availability, Rice Productivity and Water Saving under Deficit Irrigation Conditions', Journal of Plant Production, 11(1), pp. 7-16. doi: 10.21608/jpp.2020.77983
Ghoneim, A. Soil Nutrients Availability, Rice Productivity and Water Saving under Deficit Irrigation Conditions. Journal of Plant Production, 2020; 11(1): 7-16. doi: 10.21608/jpp.2020.77983
Soil Nutrients Availability, Rice Productivity and Water Saving under Deficit Irrigation Conditions
Rice Research and Training Center, Field Crops Research Institute, Agricultural Research Center, Egypt.
Abstract
Two field experiments were carried out at Rice Research and Training Center, Sakha, Kafr El-Sheikh, Egypt during 2018 and 2019 cropping seasons. Experiments aimed to determine the impacts of different deficit irrigation treatments on the available soil nutrients, N, P, K and Zn uptakes, rice yield and water use efficiency. The field experiments were laid out in a strip-plot design with four replications. The horizontal plots were devoted to the four irrigation treatments: continuous submergence (W1), intermittent irrigation at 6-day intervals (W2), intermittent irrigation at 9-day intervals (W3) and intermittent irrigation at 12-day intervals (W4), while vertical plots were occupied by the three rice genotypes, namely Giza 177, Giza 179 and GZ10154. Intermittent irrigation at 6-days intervals (W2) treatment, recorded the highest available NH4+-N, NO3--N and K concentrations in the soil. The highest values of available-N and available-P concentrations in the soil were obtained with (W1) while (W4) recorded the lowest values. The N, P, K and Zn uptakes were significantly affected by the prolonged irrigation intervals. Rice yield and its attributes decreased significantly as irrigation intervals increased up to 12-day (W4) in both seasons. The highest values of plant height, number of panicles m-2, panicle weight (g), 1000-grain weight (g), number of filled grains panicle-1, grain and straw yields were obtained with (W1) followed by (W2) treatment, except panicle length and number of unfilled grains panicle-1 in both seasons. Water saved (%) ranged from 8.90% to 26.46% and from 17.47% to 27.25% in 2018 and 2019 seasons, respectively.
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