کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6374386 1624665 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Farmyard manure application has little effect on yield or phosphorus supply to irrigated rice growing on highly weathered soils
ترجمه فارسی عنوان
کاربرد کود در مزرعه اثر کمی بر عملکرد و یا عرضه فسفر به برنج آبیاری در حال رشد در خاک بسیار آرسنیک
کلمات کلیدی
فسفات، کمبود، برنج، کود کشاورزی، قابلیت دسترسی بیولوژیک، کود، سیستم برای تشدید برنج،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
چکیده انگلیسی
It is well established that organic matter application can enhance soil phosphorus (P) bioavailability in acid, weathered soils. It is yet unclear to what extents this also holds for irrigated rice in flooded soils where, in principle, organic matter may unlock soil P due to reductive dissolution of Fe-(III) minerals. This study was set up to identify if farmyard manure (FYM) can enhance the use efficiency of soil-P and mineral fertilizer-P in irrigated rice after excluding N and K effects. Field trials with factorial supplies of FYM and banded mineral P fertilizer (Triple Superphosphate or TSP) were set up at three irrigated rice fields in Madagascar with equal annual applications during three consecutive years. All treatments received a blanket N and K application. The FYM rates were within local agronomic rates and TSP rates were maximally 80 kg P ha−1. Total P application from FYM and TSP increased rice grain yields of 4.2 Mg ha−1 at the +NK-control to, on average for all years and fields, 5.5 Mg ha−1 at highest P doses. Grain yield generally responded to TSP but not to FYM. Total P uptake in grain and straw increased with total P application. Positive effects of FYM on P uptake were mainly related to its P application to irrigated rice soils. The soil P balances amended with FYM only, i.e. the common local farmers practice, were negative. At adequate N and K supply, effect of FYM application on increasing soil or fertilizer P use efficiency was not detectable in irrigated rice; it mainly recycles P.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Field Crops Research - Volume 198, November 2016, Pages 61-69
نویسندگان
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