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Soil nutrients availability, rice productivity and water saving under deficit irrigation conditions [electronic resource]

By:

Ghoneim, A. M

Language: English Summary language: Arabic Description: 7-16 pOther title:

العناصر الميسرة بالتربة وانتاجية الارز وتوفيرالمياه تحت ظروف نقص مياه الري [Added title page title]

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Mansoura University journal of plant production, 2020 v. 11 (1) [electronic resource]

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In: Mansoura University Journal of Plant Production 2020.v.11(1)Summary: 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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Previous	ART MUJPP V11 No1 1 Effect of micronutrients (Zn, B and Mo) foliar application at various growth stages of chickpea (Cicer arietinum L.) on yield and yield components \| [electronic resource]	ART MUJPP V11 No1 10 Effect of foliar spray with proline and humic acid on productivity and essential oil content of chamomile plant under different rates of organic fertilizers in sandy soil \| [electronic resource]	ART MUJPP V11 No1 11 Comparative study of rice straw bio char and compost on rice growth and yield under saline sodic soil conditions \| [electronic resource]	ART MUJPP V11 No1 2 Soil nutrients availability, rice productivity and water saving under deficit irrigation conditions \| [electronic resource]	ART MUJPP V11 No1 3 The ability of red fountain grass to grow in cadmium-contaminated soil \| [electronic resource]	ART MUJPP V11 No1 4 Prediction of critical periods for weed interference in soybean \| [electronic resource]	ART MUJPP V11 No1 5 Impact of foliar application with calcium under different kaolin rates on growth and yield of tomato grown in high temperature condition \| [electronic resource]	Next

Includes bibliographic reference

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.

Summary in Arabic

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