scholarly journals Nutrient Management Effects on Wine Grape Tissue Nutrient Content

Plants ◽  
2022 ◽  
Vol 11 (2) ◽  
pp. 158
Author(s):  
John L. Havlin ◽  
Robert Austin ◽  
David Hardy ◽  
Adam Howard ◽  
Josh L. Heitman
Keyword(s):  
Nutrient Management ◽  
Nutrient Status ◽  
Nutrient Content ◽  
Field Studies ◽  
Soil Test ◽  
Full Bloom ◽  
Management Decisions ◽  
Late Season ◽  
Foliar N ◽  
N Management

With limited research supporting local nutrient management decisions in North Carolina grape (Vitis vinifera) production, field studies (2015–17) were conducted to evaluate late season foliar nitrogen (N) application on leaf and petiole N concentration and yeast assimilable N (YAN) in the fruit. Foliar urea (1% v/v) was applied at different rates and application times beginning pre-and post-veraison. Compared to soil applied N, late season foliar N substantially enhanced petiole N and grape YAN. Smaller split N applications were generally more effective in increasing YAN than single larger N rates. These data demonstrate the value of assessing plant N content at full bloom with petiole N analysis or remote sensing to guide foliar N management decisions. Additional field studies (2008–11) were conducted to evaluate pre-bud soil applied phosphorus (P) and potassium (K) effects on petiole P and K nutrient status. Fertilizer P and K were initially broadcast applied (0–896 kg P2O5 ha−1; 0–672 kg K2O ha−1) prior to bud-break in 2008–09 and petiole P and K at full bloom soil test P and K were monitored for three to four years after application. Soil test and petiole P and K were significantly increased with increasing P and K rates, which subsequently declined to near unfertilized levels over the sampling time depending on site and P and K rate applied. These data demonstrate the value of annually monitoring petiole P and K levels to accurately assess plant P and K status to better inform nutrient management decisions.

Stage-wise nutrient status of leaf and soil of Alphonso mango grownin Ratnagiri district of Maharashtra, India

2016 ◽  
Author(s):  
N. S. Joshi ◽  
S. S. Prabhudesai ◽  
M. M. Burondkar ◽  
N. B. Gokhale ◽  
K. H. Pujari ◽  
...  
Keyword(s):  
Nutrient Management ◽  
Developmental Stages ◽  
Nutrient Status ◽  
Nutrient Content ◽  
Potassium Content ◽  
Leaf Nutrients ◽  
Previous Season ◽  
Full Flowering ◽  
Phosphorous Content ◽  
Alphonso Mango

For the present investigation, the soil and leaf samples were collected from four mango orchards of Ratnagiri district at five serial stages namely, after harvest of the fruits of previous season, after application of fertilizers, pre-flowering, full flowering and marble stage of fruit for two successive years. The soil and leaf samples were analyzed for nitrogen, phosphorous and potassium. Available phosphorous content in soil and total phosphorous and potassium content in leaf were observed to be ‘low’. The deficiency of phosphorous content of soil and leaf at all the locations and potassium content of leaf at Dapoli and Pangari locations suggested a necessity of an improved supply of these nutrients through application of additional fertilizers. From the investigation, higher nutrient content of soil and leaf was observed at orchards having higher and systematic application of nutrients. A decline of the soil nutrients and rise of leaf nutrients during pre-flowering, flowering and fruit developmental stages was noticed. This indicated that during reproductive stages, supply of nutrients through leaves would be more effective and efficient than through soil. In general, a positive and significant correlation between soil and leaf nutrients at various stages indicated a positive effect of applied fertilizers through soil in increasing the nutrient status of leaf. From the aforesaid findings, it can be concluded that the appropriate nutrient management in case of Alphonso mango is crucial for maintaining optimum nutrient status of soil and leaf.

scholarly journals THE EFFECTS OF VINE SPACING, SHOOT DENSITY AND FOLIAR KNO3 ON NUTRIENT CONTENT OF SEYVAL GRAPEVINES

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1147F-1147
Author(s):  
G.A. Cahoon ◽  
D.M. Scurlock ◽  
J. D. Lehman
Keyword(s):  
Foliar Spray ◽  
Nutrient Content ◽  
Shoot Density ◽  
Full Bloom ◽  
Foliar N ◽  
Fruit Maturity ◽  
Factorial Treatments

Factorial treatments of vine spacing, shoot density and foliar applications of KNO3 were imposed on 9-year-old Seyval grapevines during 1989. Rows were spaced 3.05 m apart; vines within the row were spaced 1.2, 1.8 or 2.4 m apart and trained to a bilateral cordon. Shoots were thinned to 10, 20 or 30/m of canopy. A solution containing 6 kg of KNO3/379 liters of water was applied as a foliar spray at 2-week intervals between June 1 and August 1, 1989 (5 applications). Each shoot was thinned to one cluster prior to full bloom. Vines spaced at 1.2, 1.8 and 2.4 m produced an average of 4.2, 5.9 and 7.3 kg/vine, respectively (11.3, 10.6 and 9.8 MT/ha). Cluster weight averaged .22 kg; fruit maturity averaged 19.7°Brix for all treatments. Applications of KNO3 increased foliar N, K, Fe, B, Cu and Na, but decreased P, Ca, Mg, Mn, and Zn. As vine spacing increased the concentration of foliar N, P, K decreased. As shoot density increased N, P, K, B, and Cu decreased, while Ca, Mg, Mn and Na increased. The experiment will be repeated in 1990.

scholarly journals Accuracy Varies for Commercially Available Soil Test Kits Analyzing Nitrate–Nitrogen, Phosphorus, Potassium, and pH

2007 ◽  
Vol 17 (3) ◽  
pp. 358-362 ◽  
Author(s):  
Ben A. Faber ◽  
A. James Downer ◽  
Dirk Holstege ◽  
Maren J. Mochizuki
Keyword(s):  
Nutrient Management ◽  
Nitrate Nitrogen ◽  
Nutrient Content ◽  
Management Program ◽  
Analytical Laboratory ◽  
Soil Test ◽  
Test Kit ◽  
Laboratory Results ◽  
Loam Soil ◽  
Nitrogen Phosphorus

Soil testing is an important component of a plant nutrient management program for farmers, home gardeners, and agricultural service personnel. Results from five commercially available colorimetric soil test kits were compared with standard laboratory analyses for pH, nitrate–nitrogen (NO3), phosphorus (P2O5), and potassium (K2O) content for Salinas clay loam soil with three cropping histories. The kits ranked in accuracy (frequency of match with analytical laboratory results) in the following sequence: La Motte Soil Test Kit, Rapitest, Quick Soiltest, Nitty-Gritty, and Soil Kit at 94%, 92%, 64%, 36%, and 33%. NO3 was most accurately determined by Rapitest and Quick Soiltest, P2O5 by Rapitest, and pH by La Motte Soil Test Kit. K2O was determined with equal accuracy by all but Soil Kit. The composition of the extractants may be an important factor affecting the accuracy of the test kit. For example, all kit extractants for K2O were composed of the same chemical and matched analytical laboratory results 82% of the time. By contrast, kits using an acid-based extractant for NO3 analysis more frequently matched the analytical laboratory results than kits using a zinc-based extractant (P ≤ 0.0001). La Motte Soil Test Kit had the largest range of pH measures, whereas Rapitest was relatively easy to use and interpret and is a practical choice for home gardeners or landscapers; both were more than 90% accurate for this soil type. Although an important limitation of commercial test kits is the approximate or categorical value of nutrient content (i.e., low, medium, high), accurate test kits can yield results quickly and economically for improved nutrient management.

Potassium management for carrots in Prince Edward Island

2006 ◽  
Vol 86 (Special Issue) ◽  
pp. 1405-1407
Author(s):  
Kevin R. Sanderson ◽  
J. Brian Sanderson
Keyword(s):  
Prince Edward Island ◽  
Maximum Yield ◽  
Nutrient Content ◽  
Field Studies ◽  
Parallel Line ◽  
Soil Test ◽  
Daucus Carota L ◽  
Muriate Of Potash ◽  
K Response ◽  
Podzol Soils

Nine field studies were conducted over a 3-yr period to determine the response of carrot (Daucus carota L.) to soilapplied K on sandy to loamy sand Orthic Podzol soils in Prince Edward Island (PEI), Canada. Mid-season soil K levels ranged from 34 to 103 µg g-1, and sites were classified as L– (very low), L (low) and M (medium) (Mehlich 3 extractable) according to the PEI Soil and Feed Testing Laboratory. Cultivars used were Imperator-type and the crops were managed to conform to local growing practices. Treatments consisted of preplant broadcast applied muriate of potash (KCl) at 0, 75, 150, 225 or 300 kg K ha-1. When no K was applied, total carrot yields on the L–, L and M soil K ratings were 70, 90 and 98% of the maximum yield, respectively. To achieve 95% of the maximum yield, 150, 75 and 0 kg K ha-1 were required on the L–, L and M soils, respectively. Increasing rates of applied K linearly increased the K content of carrot petioles and soil samples taken at harvest. Potassium content in the carrot roots increased linearly with the rate of applied K, but parallel line analyses indicated that separate K response lines were required for each K soil test rating. Rates of 300, 150 and 75 kg K ha-1 were required to increase root K content to above the published standard of 27 mg g-1 (DM basis) on the L–, L, and M soil K sites, respectively. Key words: Carrot, potassium, soil K rating, nutrient content, yield

scholarly journals Nutrient management for jute-rice cropping system using soil test target yield equation

2015 ◽  
Vol 7 (1) ◽  
pp. 211-214
Author(s):  
M.V. Singh ◽  
Mukesh Kumar ◽  
S. Mitra ◽  
M. Ramesh Naik
Keyword(s):  
Nutrient Management ◽  
Cropping System ◽  
Soil Nutrient ◽  
Nutrient Status ◽  
Cost Ratio ◽  
Soil Test ◽  
System Productivity ◽  
Benefit Cost Ratio ◽  
Target Yield ◽  
Soil Fertility Status

A field experiment was conducted during the year 2011-13 to study the nutrient management based on soil test to achieve the target yield of jute and rice and their effect of soil nutrient status for jute-rice cropping system. The target yield of jute fibre (3.5 t/ha) with -6% deviation and target yield of rice (5.5 t/ha) were achieved with application of 100% NPK based on ST-TY based along with 5 t/ha Farm Yard Manure (FYM). The highest system productivity (11.7 t/ha) and benefit-cost ratio (3.16) was also recorded higher with application 100% NPK based on ST-TY based along with 5 t/ha FYM. The nutrient uptake by crops and soil nutrients status were higher after three year of jute-rice cropping sequence when NPK were applied with FYM. Hence, combination of inorganic and organic (FYM) fertilizer could achieve target yield and maintain the soil fertility status.

Improving the nutrient status of a commercial dairy farm: An integrated approach

2003 ◽  
Vol 18 (3) ◽  
pp. 137-145 ◽  
Author(s):  
Derek H. Lynch ◽  
Rupert W. Jannasch ◽  
Alan H. Fredeen ◽  
Ralph C. Martin
Keyword(s):  
Milk Production ◽  
Nutrient Management ◽  
Soil Analysis ◽  
Dairy Farm ◽  
Nutrient Status ◽  
Integrated Approach ◽  
Soil Test ◽  
Nutrient Inputs ◽  
Regulatory Constraints ◽  
Soil Test P

AbstractMinimizing nutrient surpluses and improving efficiency of nutrient use are key challenges for all dairy farming production systems, driven by economic, environmental and increasing regulatory constraints. Our study examined the efficiency of N, P and K use on a commercial dairy farm through an integrated approach that evaluated the nutrient status of all aspects of the production system of the case-study farm, a 75 lactating Holstein cow dairy in Kings County, Nova Scotia, Canada. During the decade after 1988, the farm owner implemented a series of changes in production practices, including diversification of the crop rotation, implementation of a management intensive grazing (MIG) regime and adoption of a systematic approach to soil and nutrient management. Milk production, and associated farm exports of N, P and K, increased by 666 kg cow−1 between 1990 and 2000. Purchases of N-P-K fertilizers were eliminated in 1990 and feed nutrient imports were dramatically reduced. Feed costs per liter of milk declined from 14.3 cents (CDN) liter−1 in 1990–92 to 11.6 cents liter−1 in 1998–2000, even as feed prices increased regionally by 10–20% over the same period. Modeling of current whole farm mass N, P and K balance indicated that 25.0% of all N inputs are recovered inform products, milk and meat. Non-legume-derived field N input (67kg Nha−1 before losses) was close to optimum for the predominantly legume/grass-based forage cropping system. Model-determined annual farm nutrient surpluses (outputs-inputs) for P (9.0kgha−1 yr−1) and K (8.2 kg ha−1 yr−1) were significantly lower than those previously reported for regional confinement-based dairy farms, which were more reliant on corn production. However, data from 16 years of soil analysis (1985–2001) indicated an increase in soil-test P levels of approximately 2 mg kg−1 yr−1. Recent refinements in dairy animal dietary P levels have further reduced the farm P surplus (2.6 kg ha−1 in year 2001) and are shown as key to a strategy for reversal of the trend in soil-test P levels. In summary, the combined approach of whole-farm system nutrient management, crop diversification and MIG increased milk production and minimized costs while reducing farm nutrient inputs. The study demonstrates how an approach to dairy farm nutrient management which integrates livestock and crop nutrient requirements may reduce dairy farm nutrient loading while maintaining productivity.

scholarly journals THE EFFECTS OF VINE SPACING, SHOOT DENSITY AND FOLIAR KNO3 ON NUTRIENT CONTENT OF SEYVAL GRAPEVINES

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1147f-1147
Author(s):  
G.A. Cahoon ◽  
D.M. Scurlock ◽  
J. D. Lehman
Keyword(s):  
Foliar Spray ◽  
Nutrient Content ◽  
Shoot Density ◽  
Full Bloom ◽  
Foliar N ◽  
Fruit Maturity ◽  
Factorial Treatments

Factorial treatments of vine spacing, shoot density and foliar applications of KNO3 were imposed on 9-year-old Seyval grapevines during 1989. Rows were spaced 3.05 m apart; vines within the row were spaced 1.2, 1.8 or 2.4 m apart and trained to a bilateral cordon. Shoots were thinned to 10, 20 or 30/m of canopy. A solution containing 6 kg of KNO3/379 liters of water was applied as a foliar spray at 2-week intervals between June 1 and August 1, 1989 (5 applications). Each shoot was thinned to one cluster prior to full bloom. Vines spaced at 1.2, 1.8 and 2.4 m produced an average of 4.2, 5.9 and 7.3 kg/vine, respectively (11.3, 10.6 and 9.8 MT/ha). Cluster weight averaged .22 kg; fruit maturity averaged 19.7°Brix for all treatments. Applications of KNO3 increased foliar N, K, Fe, B, Cu and Na, but decreased P, Ca, Mg, Mn, and Zn. As vine spacing increased the concentration of foliar N, P, K decreased. As shoot density increased N, P, K, B, and Cu decreased, while Ca, Mg, Mn and Na increased. The experiment will be repeated in 1990.

The prediction of crop biomass, grain yield and grain quality using fluorescence sensing in cereals

2017 ◽  
Vol 8 (2) ◽  
pp. 172-177
Author(s):  
J. Holland ◽  
D. Cammarano ◽  
G. Poile ◽  
M. Conyers
Keyword(s):  
Grain Yield ◽  
Precision Agriculture ◽  
Nutrient Management ◽  
Nutrient Status ◽  
Nutrient Content ◽  
Fluorescence Sensing ◽  
Crop Species ◽  
Significant Treatment ◽  
Arable Crops ◽  
Crop Biomass

Potassium (K) is a macronutrient which plays a vital role on crop growth and metabolism. After N the requirements for K are greatest for most arable crops and so the availability of K is of critical importance to optimise production. The precision nutrient management of arable crops requires accurate and timely assessment of crop nutrient status. Much research and practice has focused on crop N status, while there has been a lack of focus on other important nutrients such as K. Therefore, in this study we assess the robustness of 12 fluorescence channels and several indices to predict nutrient status (K, Mg and Ca) across two cereal crops with different row management and lime status on an acidic K deficient soil. A multi-factorial experiment was used with the following treatment factors: crop (barley, wheat), K fertilizer rates (0, 25, 50, 100 kg K/ ha), lime (nil, 1 t/ ha) and two management factors (inter-row, windrow). At flowering the crop was sampled for biomass and nutrient content and proximal sensing (using a Multiplex fluorometer) undertaken of the crop canopy. Crop variables showed significant treatment effects. For instance, all crop variables were greater under the windrow treatment than the inter-row, K rate significantly increased grain yield and TGW, but K rate decreased protein and grain Ca and Mg content, also the grain yield was significantly greater under lime compared with the nil treatment. These crop effects enabled the identification of significant crop-fluorescence relationships. For instance, SFR_R (a chlorophyll index) predicted crop biomass (regardless of crop species) and FLAV predicted with the grain protein of windrow-grown barley. These results are promising and suggest crop-fluorescence relationships can be used to inform crop nutrient status which could be used to aid management decisions. Thus, there is good potential for fluorescence sensing to quantify crop K status and the opportunity to improve the timing and precision of K management for application within a precision agriculture system.

Effect of INM on nodulation, yield, quality and available nutrient status in soil after harvest of greengram

2016 ◽  
Author(s):  
Yubaraj Dhakal ◽  
Ram Swaroop Meena ◽  
Sushil Kumar
Keyword(s):  
Nutrient Management ◽  
Block Design ◽  
Uttar Pradesh ◽  
Dry Weight ◽  
Nutrient Status ◽  
Nutrient Content ◽  
Phosphate Solubilizing Bacteria ◽  
Yield Attributes ◽  
Randomized Block Design ◽  
Phosphate Solubilizing

A field experiment was carried out at Varanasi (Uttar Pradesh) during kharif season of 2013 to study the influence of integrated nutrient management on greengram [Vigna radiata (L.) Wilczek].Three sources of nutrients viz. inorganic, organic and bio-fertilizers were used in twelve combinations with randomized block design. Among different combinations, significant improvement in number of nodules/plant (80.97), dry weight of nodules (32.89 mg/plant), yield attributes, seed yield (12.34 qt/ha), harvest index (28.32%), nutrient content, available NPK and organic carbon after harvest in soil were recorded with application of nutrients through 75% RDF + 2.5 t/ha vermicompost + rhizobium + Phosphate solubilizing bacteria (PSB) as compared to other combinations and control, but it was at par with 100% RDF + 2.5 t/ha vermicompost and 100% RDF + rhizobium + PSB.

scholarly journals Use of GIS in soil fertility mapping of Rapti Municipality, Chitwan, Nepal

2020 ◽  
Vol 1 (2) ◽  
pp. 64-73
Author(s):  
Biplov Oli ◽  
Sushil Lamichhane ◽  
Khem Oli
Keyword(s):  
Soil Fertility ◽  
Total Nitrogen ◽  
Soil Ph ◽  
Management Practices ◽  
Nutrient Management ◽  
Nutrient Status ◽  
Nutrient Content ◽  
Google Earth ◽  
Landuse Planning ◽  
Soil Fertility Status

Mapping the spatial distribution of soil fertility in a particular area gives an idea about the nutrient content in the soil which plays an im-portant role in fertilizer recommendation, sustainable soil manage-ment, integrated plant nutrient management, landuse planning, and site-specific nutrient management (SSNM). A study was carried out to assess the soil fertility status of the Rapti Municipality, Chitwan, Ne-pal. A total of 120 soil samples was collected based on land use, slope, and aspects with the useof Google Earth Pro (GEP) and ArcGIS. Based on the soil test report spatial variation of soil texture, soil pH, total nitrogen, available phosphorous, and potassium of the study area was prepared. The majority of the study area (57.11%) has sandy clay soils. The soil pH was very strongly acidic to slightly alkaline with pH values ranging from 4.8 to 8.0. Soil organic matter (1.94-3.75%), total nitrogen (0.097-0.187%), available phosphorous(51.03-270.10 kgha-1), and available potassium (169.87-358.68 kgha-1) in the soil are within the range of medium to high in the study area. To maintain this nutrient status, the use of organic manure, reduced use of chemical fertilizers, and different soil management practices should be adopted in this area.

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