کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4568008 | 1331286 | 2011 | 6 صفحه PDF | دانلود رایگان |
A certified organic apple (Malus × domestica Borkh.) orchard was established to study the interaction of ground cover management systems (GMS) and nutrient sources (NS) on nitrogen (N) use efficiency and N surplus in the Southern U.S. for three years. Trees treated with green compost (GC) and wood chips (WC), regardless of the NS, had greater N accumulation and leaf N use efficiency compared to the shredded paper or mow-and-blow treated trees. The WC-treated trees had comparably low N surplus relative to the GC trees that induced more [NO3−] in soil or soil solution in the rooting zone in September in year 3. GC trees had the highest [NO3−] mineralization in the soil during winter. GMS had greater overall effects on the tree response variables than did the NS.
► GC and WC trees filled their allocated space in year 3 but SP and MB did not.
► GC plots could have been high risk of potential surplus N.
► WC plots could be the best GMS from the environmental or production point of view.
► GMS had greater overall effects on the tree response variables than did the NS.
Journal: Scientia Horticulturae - Volume 129, Issue 4, 27 July 2011, Pages 674–679