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Dairy manure and tillage effects on soil fertility and corn yields [An article from: Bioresource Technology]
Book Details
Author(s)A.U.H. Khan, M. Iqbal, K.R. Islam
PublisherElsevier
ISBN / ASINB000PDT73S
ISBN-13978B000PDT736
MarketplaceIndia 🇮🇳
Description
This digital document is a journal article from Bioresource Technology, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
Organic amendments have received renewed attention to improve soil fertility for crop production. A randomized complete block split plot experiment was conducted to evaluate the dairy manure (DM) amendments of soil for corn (Zea mays L. cv. Monsanto 919) production under different tillage systems. Main plot treatments were no-till (NT), conventional tillage (CT), and deep tillage (DT), and subplot treatments were chemical fertilization (DM"0), and DM at 10Mgha^-^1yr^-^1 (DM"1"0) and 20Mgha^-^1yr^-^1 (DM"2"0) with supplemental chemical fertilization. Results show that tillage and DM had significantly reduced bulk density (@r"b) with greater porosity (f"t) and hydraulic conductivity (K"f"s) than soils under NT and DM"0. Manuring was effective to improve soil physical properties in all tillage treatments. While manure significantly increased C sequestration, the N concentration was influenced by both tillage and manure with significant interaction. The CT significantly increased P as did the addition of manure. However, with manure, K was significantly increased in all tillage treatments. While tilled soils produced taller plants with higher grain yields, and water-use efficiency than NT soils, manuring, in contrast, increased corn harvest index. Manure exerted significant quadratic effect on corn biomass N and K uptake. The variable effects of tillage and dairy manuring on soil properties and corn growth are most probably related to ''transitional period'' in which soil ecosystems may have adjusting to a new equilibrium.
Description:
Organic amendments have received renewed attention to improve soil fertility for crop production. A randomized complete block split plot experiment was conducted to evaluate the dairy manure (DM) amendments of soil for corn (Zea mays L. cv. Monsanto 919) production under different tillage systems. Main plot treatments were no-till (NT), conventional tillage (CT), and deep tillage (DT), and subplot treatments were chemical fertilization (DM"0), and DM at 10Mgha^-^1yr^-^1 (DM"1"0) and 20Mgha^-^1yr^-^1 (DM"2"0) with supplemental chemical fertilization. Results show that tillage and DM had significantly reduced bulk density (@r"b) with greater porosity (f"t) and hydraulic conductivity (K"f"s) than soils under NT and DM"0. Manuring was effective to improve soil physical properties in all tillage treatments. While manure significantly increased C sequestration, the N concentration was influenced by both tillage and manure with significant interaction. The CT significantly increased P as did the addition of manure. However, with manure, K was significantly increased in all tillage treatments. While tilled soils produced taller plants with higher grain yields, and water-use efficiency than NT soils, manuring, in contrast, increased corn harvest index. Manure exerted significant quadratic effect on corn biomass N and K uptake. The variable effects of tillage and dairy manuring on soil properties and corn growth are most probably related to ''transitional period'' in which soil ecosystems may have adjusting to a new equilibrium.
