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Register a new userEffect of irrigation intervals and humic acid application on the chemical composition of blue panic plant (Panicum antidotale)
تأثير فترات الري وإضافة حمض الهيومك في التركيب الكيميائي لنبات البونيكام Panicum antidotale
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عواد محمود الأسود( باحث )
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نفذ البحث في مشتل الحراج التابع لمديرية الزراعة في محافظة ديرالزور في موسم 2019 ، بهدف دراسة تأثير فترات الري وإضافة حمض الهيومك في التركيب الكيميائي لنبات البونيكام(Panicum antidotale) . نُفذت التجربة بتصميم القطاعات العشوائية الكاملة (RCBD) ، حيث زرعت بذور نبات البونيكام في أكياس من البولي إيثيلين والمملوءة بخلطة ترابية مع الرمل بنسبة 2 :1 وبأربع مكررات، واستخدمت ثلاث فترات من الري ( 7 ، 14 ، 21) يوماً ومعاملتي إضافة لحمض الهيومك (بدون إضافة ، مع الإضافة بمعدل4 ملليتر لكل لتر ماء ) وأخذت العينات الخضرية لكل معاملة بعد أخذ الحشة الأولى ، وجففت في المخبر على درجة حرارة 70 درجة مئوية حتى ثبات الوزن ، تم إجراء التحليل الكيميائي للعينات وقدرت فيها كل من النسبة المئوية للمادة الجافة و% للبروتين الخام و% للألياف الخام و% للرماد و% للكربوهيدرات الكلية و% للمستخلص الإيثيري حسب الطرق المعروفة للتحليل . أظهرت النتائج تفوق معاملة الشاهد (الري كل 7 أيام) معنوياً على معاملتي الري كل 14 يوماً و21 يوماً في النسبة المئوية للكربوهيدرات الذائبة (42.09 %) ، بينما تفوقت معاملة الري كل 14 يوماً على بقية المعاملات وسجلت أعلى القيم في النسبة المئوية البروتين الخام (17.07%) والنسبة المئوية للمستخلص الإيثيري (2.73%) ، في حين أعطت معاملة الري كل 21 يوماً أعلى القيم في النسبة المئوية للرماد (16.38 %) ، في حين لم تسجل أية فروق معنوية بين معاملات الري في صفتي النسبة المئوية للمادة الجافة والنسبة المئوية للألياف الخام ، أما بالنسبة لمعاملة عدم إضافة أو إضافة حمض الهيومك فقد تفوقت معاملة عدم إضافته على معاملة إضافته في النسبة المئوية للألياف الخام (CF) ، بينما تفوقت معاملة إضافة حمض الهيومك في صفات النسبة المئوية لكل من البروتين الخام (CP) والرماد (ASH) والمستخلص الإيثيري (EE) ، ولم تسجل أية فروق معنوية بين المعاملتين في صفتي النسبة المئوية للمادة الجافة (DM) والنسبة المئوية للكربوهيدرات الذائبة (NFE) . أثر التفاعل الثنائي بين فترات الري وإضافة حمض الهيومك معنوياً في كل الصفات المدروسة ، فقد سجلت معاملة الشاهد(الري كل 7 أيام) مع إضافة حمض الهيومك أعلى القيم في النسبة المئوية للكربوهيدرات الذائبة (42.92%) ، في حين أعطت معاملة الري كل 14 يوماً مع إضافة حمض الهيومك أعلى القيم في النسبة المئوية للبروتين الخام (17.81%) والنسبة المئوية للرماد (16.55%) والنسبة المئوية للمستخلص الإيثيري (2.81%)، أما معاملة الري كل 21 يوماً مع إضافة حمض الهيومك فقد سجلت أعلى القيم في النسبة المئوية للمادة الجافة ( 96.25 %).
The research was conducted at the Forestry Nursery of the Directorate of Agriculture in Deir Ezzor Governorate during the growing season of 2019. The objective of the study was to study the effect of humic acid application and different irrigation intervals on chemical composition of blue panic plant (Panicum antidotale). The experiment was implemented in a Randomized Complete Block Design (RCBD) by planting Panicum seeds in polyethylene bags filled with 2 soils to 1 sand mixture in four replicates. Whereas three irrigation intervals (7, 14, and 21 days) and two humic acid application treatments (control without addition and application of humic acid) were used. Fresh plant sample from each treatment was taken at each cut, and samples were dried at 70C until weight was stable. Chmeical compostion was conducted for the samples and dry matter %, crude protein %, crude fiber %, total carbohydrate %, and ether extract % were estimated according the the common methods. The results showed that the control treatment (irrigation every 7 days) was significantly superior to the two irrigation treatments every 14 days and 21 days in the percentage of soliable carbohydrates (42.09%). While, irrigation treatment every 14 days outperformed the other irrigation treatments and recorded the highest values of percentage of crude protein (17.07%) and the percentage of ether extract (2.73%). The irrigation treatment every 21 days gave the highest values of ash percentage (16.38%). No significant differences were recorded between the irrigation treatments for the percentage of dry matter and the percentage of crude fiber. The control treatment of humic acid outperformed the addition of humic acid interms of the percentage of crude fiber (CF), while the treatment of addition of humic acid outperformed the control in the percentages of crude protein (CP), ash and ether extract (EE). No significant differences were recorded between the application and control of humic acid treatments in dry matter % and the percentage of soluble carbohydrates. The effect of the interaction between irrigation intervals and the application of humic acid was significant for all the studied characteristics. The control treatment (irrigation every 7 days) with the addition of humic acid recorded the highest values for the percentage of soluble carbohydrates (42.92%). The irrigation treatment every 14 days with the addition of humic acid gave the highest values in the percentage of crude protein (17.81%), the percentage of ash (16.55%) and the percentage of extracted ether (2.81%). As for the irrigation treatment every 21 days with the addition of humic acid, had the highest values for the percentage of dry matter (96.25%)
References used
Phelps, B.(2000).Humic Acid Structure and Properties. Phelps Teknowledge. 29/12/1427.http://www.Pheplsteck.com
Saruhan, V.; A., Kusvuran and S., Babat (2011). The effect of different humic acid fertilization on yield and yield components performances of common millet (Panicum miliaceum L.). Sci Res Essays 6: 663–669
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