Principles and Practices in Plant Analysis

Munson, Robert D.; Nelson, W. L.

doi:10.2136/sssabookser3.3ed.c14

Cited by 61 publications

(36 citation statements)

References 89 publications

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“…In absolute values, the CSb rotation had the greatest concentrations, followed by the SbC and CC rotations (Table 2). Because total N uptake by corn and soybean is similar (Bender et al, 2013(Bender et al, , 2015Munson and Nelson, 1990), the only difference between the check plots for CSb and SbC is the crop residue present from the previous year. We can only speculate that CSb had greater SWN-N concentrations than SbC because of greater N immobilization with the corn residue in SbC.…”

Section: N Rate and Crop Rotation Influence On Soil-water Nitrate Conmentioning

confidence: 99%

Nitrogen Management for Corn and Groundwater Quality in Upper Midwest Irrigated Sands

Struffert

Rubin²,

Fernández

et al. 2016

J of Env Quality

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Groundwater contamination from NO-N leaching in corn ( L.) production with coarse-textured soils poses an environmental concern. Our objectives were to evaluate NO-N leaching in continuous corn (CC), corn after soybean ( L.) (CSb), and soybean after corn (SbC) in irrigated sandy soils in Minnesota related to (i) N rate using best management practices of split-N application, (ii) a split-N application and single preplant applications of enhanced-efficiency fertilizers (EEF), and (iii) residual N treatment in SbC. Urea (0-315 kg N ha in 45-kg increments) was broadcast as a split application (half at preplant and half at the V4 development stage) and polymer-coated urea (ESN), ESN/urea, and SuperU at preplant at a rate of 180 kg N ha on an Arvilla sandy loam soil. In May and June, 75% of the total drainage and 73% of the total NO-N leached occurred. At the economic optimum N rate (EONR), season-long NO-N leaching rates were 86 and 106 kg NO-N ha for CC and CSb, respectively. In CC, reducing the EONR by 20% reduced grain yield by 4% and NO-N leached by 9%, and a 25% reduction in EONR resulted in an additional 2% reduction for both, whereas no significant reductions occurred for CSb. Similar NO-N leaching occurred with EEFs and the split-N application. After 4 yr of no N application, we measured 9 to 20 mg NO-N L and leaching of 21 to 51 kg NO-N ha, highlighting the difficulty of meeting drinking water quality standards in corn cropping systems.

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Section: N Rate and Crop Rotation Influence On Soil-water Nitrate Conmentioning

confidence: 99%

Nitrogen Management for Corn and Groundwater Quality in Upper Midwest Irrigated Sands

Struffert

Rubin²,

Fernández

et al. 2016

J of Env Quality

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“…Foliar nutrient analysis is a wellestablished method (Munson and Nelson, 1990) to assist in the diagnosis of nutrient-related problems (deficiencies, toxicities, imbalances, etc.) of both annual and perennial crops.…”

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confidence: 99%

“…Foliar nutrient analyses are employed through tissue-sampling methods, which are contingent on sampling location, plant part selected, and the stage of growth. Specific sampling protocols may be dependent on the crop type and purpose (Munson and Nelson, 1990). Furthermore, optimal nutrient levels must to be established for each individual crop.…”

mentioning

confidence: 99%

Toward Standardized Leaf Sampling for Foliar Nutrient Analysis in Breadfruit

Lincoln¹,

Radovich²,

Acosta³

et al. 2019

hortte

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Breadfruit (Artocarpus altilis) cultivation is gaining momentum throughout the tropics due to its high yield and nutritious fruit. One impediment to expanding production of breadfruit is the lack of agronomic research related to production management. We examined foliar nutrient concentrations of different leaf positions and leaf parts to assess within- and between-tree variance to inform an effective sampling protocol. We further validated the sampling protocol on 595 trees at 87 sites that were assessed for yield and productivity. Foliar nutrients differed significantly by categories of productivity. For the first time, breadfruit-specific standards of foliar nutrient concentrations are presented for consideration. In conclusion, we recommend that foliar sampling use petioles harvested from leaves in the third position from the branch tip using sun-exposed leaves in the midcanopy of each tree.

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“…In soybeans, selection of the most recently matured leaves (petioles removed) at the mid to late bloom stage or before bean development has started (Miller et al, 1961 and1964) has been the most commonly used sampling practice (Small and Ohlrogge, 1973). Jones and Steyn (1973) Pesek, and Spaldon (1973) and Munson and Nelson (1973) have clarified the background on these concepts. Melsted et al (1969) gave the following critical values: leaf P for soybeans-0.35%, and for corn-0.25%; leaf K for soybeans-2.2%, and for corn-1.90%.…”

Section: Selection Of the Plant Part Which Most Reliably Indicatesmentioning

confidence: 99%

The relative response of corn and soybeans to N, P, and K fertilization as measured by plant chemical composition and grain yields

Young

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Principles and Practices in Plant Analysis

Cited by 61 publications

References 89 publications

Nitrogen Management for Corn and Groundwater Quality in Upper Midwest Irrigated Sands

Nitrogen Management for Corn and Groundwater Quality in Upper Midwest Irrigated Sands

Toward Standardized Leaf Sampling for Foliar Nutrient Analysis in Breadfruit

The relative response of corn and soybeans to N, P, and K fertilization as measured by plant chemical composition and grain yields

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