No‐Tillage Soybean Response to Banded and Broadcast and Direct and Residual Fertilizer Phosphorus and Potassium Applications

Abstract

Ham and Caldwell (1978) reported that fertilizer P increased soybean production but placement had no Improved P and K management systems for no-tillage soybean significant effect on yield and P uptake. The Ham and [Glycine max (L.) Merr.] may be needed to increase yield and profits. This study evaluated the response of soybean to fertilizer P or K rates Caldwell (1978) paper did not report the tillage system and placement as well as residual and direct fertilization from 1995 used in their study, but two other papers did. Those through 1996. Two K and two P experiments were established on papers reported no yield increases from different P and farmers' fields with 10-yr histories of no tillage. An additional P K fertilizer placement methods under conventional-tillexperiment was conducted on one of Iowa State University's research age systems when soil test levels were high (Ham et al., farms. Treatments on farmers' fields included two rates of P (0 and1973; Rehm et al., 1988). However, at low soil test P 19.5 kg P ha Ϫ1 ) or K (0 and 51 kg K ha Ϫ1 ), placement of fertilizer levels, the largest response was from broadcast fertilizer. (surface broadcast or a subsurface band 5 cm beside and 5 cm belowEarly research in Iowa indicated banding of fertilizers the seed ) and time of fertilizer application. Treatments on the research was equal or superior to broadcasting fertilizers if confarm were similar, except the P fertilizer rates applied were 0, 19, 39,

Yield response to fertilization strategies in no-tillage soybean, corn and common bean crops

“…There is high root concentration (Yibirin et al, 1993) and hyphae and mycorrhiza spores (Kabir et al, 1998) in the first centimeters in the superficial layer in no-tillage systems which increases the possibility of absorption of nutrients applied or accumulated in this layer. In no-tillage, the superficial nutrient application has propitiated similar yields to the furrow application in several crops (Oliveira et al, 1992, Kochhann et al, 1998Bordoli and Mallarino, 1998;Borges and Mallarino 2000;Heckman and Kamprath, 1992;Sguario Jr., 2000, Howard et al, 2002 or even superior (Buah et al, 2000), but can vary acording to crop (Pöttker, 1999). This long period study aimed to evaluate the effect of strategies in the starter fertilizer application on grain yield and its components in corn, soybeans and common beans in rotation and no-tillage system.…”

Liquid swine manure as a phosphorus source for corn-soybean rotation

“…As expected, the manure total P concentration varied greatly across sites (Table 1). Total P concentrations ranged from 0.9 to 2.8 g P L"\ which is a range consistent with concentration ranges reported for liquid swine manure sources surveyed in Iowa Killom et al, 2000). Although the P fertilizer rates were similar for all sites, the rates of manure differed (Table 1) mainly because the manure rates often were defined based on N crop needs or removal and because the P concentration of the manure actually applied differed from the P concentration of preliminary samples.…”

“…For example, results of numerous studies from Iowa have been published during the last decade Webb et al, 1992;Bordoli and Mallarino, 1998;Buah et al, 2000;Borges and Mallarino, 2000;. However, effects of P from liquid swine manure on early plant growth, early P uptake, grain yield, and P removal have received less attention.…”

Co-Granulated and Blended Zinc Fertilizer Comparison for Corn and Soybean

“…Fertilizer applications to corn in a corn-soybean rotation had inconsistent effects on soybean yield and seed quality. Anthony et al (2012) and Buah, Polito, and Killorn (2000) reported no difference in yield between 0 and 56 kg P ha -1 . However, others have shown increased yields, but at low soil test P levels (Borges & Mallarino, 2000.…”