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Effect of addition of humic acid and Leaching Factor under irrigation with different levels of saline water on Clay Soils content of Organic Matter and yield of wheat crop .

تأثير إضافة حمض الهيوميك ومعامل الغسيل تحت الري بمستويات مختلفة من المياه المالحة على محتوى الترب الطينية من المادة العضوية وإنتاجية محصول القمح.

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 Publication date 2019
and research's language is العربية
 Created by د. يوسف الخلف




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An experiment was carried out under the conditions of the green house at the Faculty of Agriculture, University of Aleppo. The aim of research is determine the effect of the addition of humic acid to the irrigated soils by saline water in their organic carbon content and the yield of the wheat crop. The experiment was designed in a split-spilt dissection method. The main sections comprising three levels of irrigation water salinity (W1:0, W2:3, W3:6 g-1 NaCl). Three levels of gypsum were mixed with soil: (G1:0, G2:25, G3:50 g). Three levels of humic acid were added with irrigation water (H3:48, H2:24, H1:0 kg/h). The coefficient Leaching with irrigation water for W3 and W2 was applied at %10 and %20 of the field capacity, respectively. The results showed that the addition of humic acid contributed to the increase in the stock of organic carbon. The highest percentage of organic matter (2.70%) was found in the deep layer (W3G3H3), while the lowest ratio was (1.41%) in the surface layer of treatment (W3G2H1). The role of humic acid, especially at the level of H3, was clearly demonstrated in increasing the productivity and weight of the 1000 grains for the wheat crop. The study confirmed the role of the leaching factor in the organic carbon losses of the soil, where organic carbon was losses (%26.31) with leaching factor 10%, where the losses (%44.74) with leaching factor was 20%.


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Research summary
تتناول هذه الدراسة تأثير إضافة حمض الهيوميك ومعامل الغسيل على محتوى الترب الطينية من المادة العضوية وإنتاجية محصول القمح تحت الري بمستويات مختلفة من المياه المالحة. أجريت التجربة في البيت الزجاجي بكلية الزراعة بجامعة حلب، حيث تم تصميم التجربة بطريقة القطع المنشقة من الدرجة الثانية. تضمنت التجربة ثلاثة مستويات من ملوحة مياه الري (0، 3، 6 غ/ل NaCl)، وثلاثة مستويات من الجبس (0، 25، 50 غ)، وثلاثة مستويات من حمض الهيوميك (0، 200، 400 ملغ/الرية). أظهرت النتائج أن إضافة حمض الهيوميك ساهمت في زيادة المخزون من الكربون العضوي في التربة، حيث سجلت أعلى نسبة من المادة العضوية (2.70%) في الطبقة العميقة، بينما كانت أقل نسبة (1.41%) في الطبقة السطحية. كما أظهرت الدراسة أن حمض الهيوميك، خاصة عند المستوى الثالث، ساهم بشكل واضح في زيادة الإنتاجية ووزن الألف حبة لمحصول القمح. وأكدت الدراسة دور معامل الغسيل في انفصال الكربون العضوي من التربة، حيث كان معدل الانفصال أعلى مع معامل الغسيل 20% مقارنة بمعامل الغسيل 10%.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة في سياق البحث عن حلول لتحسين إنتاجية المحاصيل في ظل الظروف القاسية مثل ملوحة المياه. ومع ذلك، يمكن توجيه بعض النقد البناء للدراسة. أولاً، قد يكون من المفيد توسيع نطاق الدراسة لتشمل أنواع أخرى من المحاصيل وليس فقط القمح، وذلك لتعميم النتائج. ثانياً، لم تتناول الدراسة تأثيرات طويلة الأمد لإضافة حمض الهيوميك ومعامل الغسيل على التربة والمحصول، مما يترك مجالاً للبحث المستقبلي. ثالثاً، كان من الممكن تحسين تصميم التجربة من خلال زيادة عدد المكررات لضمان دقة النتائج. وأخيراً، لم تتناول الدراسة الجوانب الاقتصادية لتطبيق هذه التقنيات، وهو جانب مهم يجب مراعاته عند تقديم توصيات للمزارعين.
Questions related to the research
  1. ما هو الهدف الرئيسي من هذه الدراسة؟

    الهدف الرئيسي هو معرفة تأثير إضافة حمض الهيوميك ومعامل الغسيل على محتوى الترب الطينية من المادة العضوية وإنتاجية محصول القمح تحت الري بمستويات مختلفة من المياه المالحة.

  2. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    أظهرت النتائج أن إضافة حمض الهيوميك ساهمت في زيادة المخزون من الكربون العضوي في التربة وزيادة إنتاجية ووزن الألف حبة لمحصول القمح. كما أكدت الدراسة دور معامل الغسيل في انفصال الكربون العضوي من التربة.

  3. ما هي التوصيات التي يمكن استخلاصها من هذه الدراسة؟

    التوصيات تشمل استخدام حمض الهيوميك لتحسين محتوى الكربون العضوي في التربة وزيادة إنتاجية المحاصيل، بالإضافة إلى تطبيق معامل الغسيل المناسب لتقليل تراكم الأملاح في التربة.

  4. ما هي الانتقادات التي يمكن توجيهها لهذه الدراسة؟

    الانتقادات تشمل الحاجة لتوسيع نطاق الدراسة لتشمل محاصيل أخرى، دراسة التأثيرات طويلة الأمد، تحسين تصميم التجربة بزيادة عدد المكررات، وتناول الجوانب الاقتصادية لتطبيق هذه التقنيات.


References used
Khan, AR. and S. Mir (2002). Plant growth stimulation of lignite humic acid part II. Effect of lignite derived ammonium humate on wheat (TriticumaestivumV.) crop using different levels of phosphate fertilizer. Pakistan J. Sci. Indust.Res. 45: 273-276.
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