Nitrogen and water requirements of fertigated cabbage in Ontario

2010 ◽  
Vol 90 (1) ◽  
pp. 101-109 ◽  
Author(s):  
A W McKeown ◽  
S M Westerveld ◽  
C J Bakker
Keyword(s):  
Brassica Oleracea ◽  
Best Management Practices ◽  
Management Practices ◽  
Nutrient Management ◽  
Sandy Loam ◽  
Field Capacity ◽  
Dry Weight ◽  
Research Station ◽  
Marketable Yield ◽  
N Application

Increasing nutrient and water regulations have necessitated development of best management practices for application of nitrogen (N) and water. This study was conducted to determine if there was an optimal balance of N and water applied for late storage cabbage (Brassica oleracea L. var. capitata). Five rates of N and five irrigation rates arranged in a response surface design replicated three times were supplied to Huron cabbage grown on sandy loam soil to study the interaction of N and water applied. Plots were located at the University of Guelph, Simcoe Research Station, Ontario, Canada from 2003 to 2005. Total and marketable yields were maximized from a low of 278 kg ha-1 N in 2005 to above the highest rate tested (400 kg ha-1 N) in the other 2 yr. In 2005, there were 29 d above 30 °C and marketable yield was 49% lower than 2004, which had only 1 d above 30 °C. A target soil water value of 100% of field capacity was required to maximize yield in all 3 yr. More N is required as the water supply increases. The main influence of irrigation and N application was on head volume. Head density based on fresh weight was not influenced by irrigation or N application, but head density based on dry weight decreased with increased N application. Irrigation and N application should be managed concurrently to maximize yield and quality and N and irrigation efficiency for late storage cabbage. However, N and water will not prevent lost yield due to hot days, which suggests that late-cabbage yields are very sensitive to high air temperatures. Key words: Brassica oleracea var. capitata, cabbage, irrigation, fertigation, quality, nutrient management, air temperature

scholarly journals Yield and Quality of Carrot Cultivars with Eight Nitrogen Rates and Best Management Practices

HortScience ◽  
2021 ◽  
pp. 1-7
Author(s):  
Robert Conway Hochmuth ◽  
Marina Burani-Arouca ◽  
Charles Edward Barrett
Keyword(s):  
Best Management Practices ◽  
Management Practices ◽  
Sandy Soils ◽  
Application Rate ◽  
Fresh Market ◽  
Marketable Yield ◽  
N Application ◽  
Winter Climate ◽  
Best Management ◽  
Application Rates

Carrot (Daucus carota) production has increased in North Florida and South Georgia since 2015. Deep sandy soils, moderate winter climate, availability of irrigation water, and proximity to eastern markets are favorable for carrot production in the region. Nitrogen (N) is required for successful carrot production, and the current recommended N application rate in Florida is 196 kg·ha−1. The objective of this study was to verify the recommended N rate for the sandy soils of North Florida using current industry standard cultivars and practices. Carrot cultivars for the whole carrot fresh market, Choctaw and Maverick, and cultivars for the cut-and-peel market, Triton and Uppercut 25, were direct seeded on 102-cm-wide pressed bed tops on 29 Oct. 2016 and 2 Nov. 2017 in Live Oak, FL. Eight N application rates (56, 112, 168, 224, 280, 336, 392, and 448 kg·ha−1) were tested, and all N applications were placed on the bed top. N rates were split and timed to increase N use efficiency. Regression analyses were used to determine the optimal N rate for carrots in North Florida. A quadratic plateau regression for both seasons combined indicated 206 kg·ha−1 N was the optimal rate for carrots, with marketable yield of 71.3 Mg·ha−1, regardless of cultivar. All four cultivars attained acceptable yield including Uppercut 25, which exhibited significant foliage damage following freezing temperatures. This study resulted in updated information on best management practices for carrot production in Florida, especially nutrient stewardship.

Effect of integrated nutrient management on growth and yield parameters of okra (Abelmoschus esculentus (L.) Moench) cv. Arka Anamika

2019 ◽  
Vol 4 (02) ◽  
pp. 185-190
Author(s):  
Pavitra Dev ◽  
Ankur Tomar ◽  
Jitendra Kumar ◽  
Krishan Choudhary ◽  
Vinuj Kumar
Keyword(s):  
Management Practices ◽  
Nutrient Management ◽  
Sandy Loam ◽  
Block Design ◽  
Dry Weight ◽  
Chemical Fertilizer ◽  
Abelmoschus Esculentus ◽  
Growth And Yield ◽  
Integrated Nutrient Management ◽  
Yield Parameters

The present study was carried out to examine the effect of integrated nutrient management on growth and yield parameters of okra (Abelmoschus esculentus L. Moench) at Horticulture Research Farm, Department of Horticulture, Chaudhary Charan Singh University, Meerut, U.P. during the year 2018. The field experiment was laid out in randomized block design with three replications. The treatments involved in the study were eight in numbers i.e. T1 Control (no fertilizers), T2 (125 kg N + 50 kg P2O5 + 60 kg K2O /ha), T3 (100 kg N + 40 kg P2O5 + 48 kg K2O + 5 t FYM /ha) T4 (100 kg N + 40 kg P2O5 + 48 kg K2O + 12 q VC /ha), T5 (75 kg N + 30 kg P2O5 + 36 kg K2O + 10 t FYM /ha), T6 (75 kg N +30 kg P2O5 + 36 kg K2O + 24 q VC /ha), T7 (25 t FYM /ha), T8 (60 q VC /ha). All variable parameters regarding vegetative and reproductive parameters of okra were significantly influenced by integrated nutrient management practices. Soil of the experimental field was sandy loam and neutral in pH reaction. The present investigation clearly indicate that the combined application of organic and inorganic fertilizers i.e. T6 (75 kg N +30 kg P2O5 + 36 kg K2O + 24 q VC /ha) had the better effect on growth and yield parameters viz., plant height (129.11 cm), number of nodes on main stem (19.23), fresh weight of plant (351.13 g), dry weight of plant (72.12 g), number of pods per plant (16.13), length of pod (15.80 cm) and yield (134.14 q /ha) as compared to other treatments in case of okra cv. Arka Anamika under Western Uttar Pradesh conditions. On the basis of present investigation, it may be concluded that an integrated use of organic manure with chemical fertilizer increased the growth and yield of okra than that of sole application of either chemical fertilizer or organic manures.

scholarly journals Assessing Opportunities to Increase Yield and Profit in Rainfed Lowland Rice Systems in Indonesia

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 777
Author(s):  
Erythrina Erythrina ◽  
Arif Anshori ◽  
Charles Y. Bora ◽  
Dina O. Dewi ◽  
Martina S. Lestari ◽  
...  
Keyword(s):  
Best Management Practices ◽  
Management Practices ◽  
Nutrient Management ◽  
Agricultural Research ◽  
Rice Yield ◽  
Information Access ◽  
Water Reservoir ◽  
Dry Season ◽  
Rice Production ◽  
Yield Gap

In this study, we aimed to improve rice farmers’ productivity and profitability in rainfed lowlands through appropriate crop and nutrient management by closing the rice yield gap during the dry season in the rainfed lowlands of Indonesia. The Integrated Crop Management package, involving recommended practices (RP) from the Indonesian Agency for Agricultural Research and Development (IAARD), were compared to the farmers’ current practices at ten farmer-participatory demonstration plots across ten provinces of Indonesia in 2019. The farmers’ practices (FP) usually involved using old varieties in their remaining land and following their existing fertilizer management methods. The results indicate that improved varieties and nutrient best management practices in rice production, along with water reservoir infrastructure and information access, contribute to increasing the productivity and profitability of rice farming. The mean rice yield increased significantly with RP compared with FP by 1.9 t ha–1 (ranges between 1.476 to 2.344 t ha–1), and net returns increased, after deducting the cost of fertilizers and machinery used for irrigation supplements, by USD 656 ha–1 (ranges between USD 266.1 to 867.9 ha–1) per crop cycle. This represents an exploitable yield gap of 37%. Disaggregated by the wet climate of western Indonesia and eastern Indonesia’s dry climate, the RP increased rice productivity by 1.8 and 2.0 t ha–1, with an additional net return gain per cycle of USD 600 and 712 ha–1, respectively. These results suggest that there is considerable potential to increase the rice production output from lowland rainfed rice systems by increasing cropping intensity and productivity. Here, we lay out the potential for site-specific variety and nutrient management with appropriate crop and supplemental irrigation as an ICM package, reducing the yield gap and increasing farmers’ yield and income during the dry season in Indonesia’s rainfed-prone areas.

Variety × Nutrient management interaction in greengram for important yield attributes under rainfed red lateritic inceptisol

2017 ◽  
Author(s):  
Ashok Mishra ◽  
B. S. Rath ◽  
S. K. Mukhi ◽  
S. S. Mishra ◽  
S. K. Mohanty ◽  
...  
Keyword(s):  
Seed Yield ◽  
Management Practices ◽  
Nutrient Management ◽  
Sandy Loam ◽  
Yield Attributes ◽  
Nutrient Treatment ◽  
Rainfed Upland ◽  
Loam Soil ◽  
Use Efficiency ◽  
The Mean

The effect of five nutrient management practices on the yield and yield attributes, nutrient uptake and rain water use efficiency in four greengram varieties (Dhauli, Pusa-9531, OBGG-52 and Nayagarh Local) in rainfed upland inceptisol with sandy- loam soil was studied in factorial RBD with three replications during Kharif 2009 to 2012. Significant variety × nutrient interaction was observed with respect to seed yield, nodulation and other yield attributing characters. Based on the mean data over four years (2009-2012), highest seed yield of 5.84 q ha-1 was observed in Pusa 9531 with lime+50% organic+ 50% inorganic treatment followed by Dhauli (5.53 q ha-1) with the same nutrient treatment. Highest RWUE was found in Lime + 50% organic + 50% inorganic treatment in all the varieties followed by 100% organic treatment in Dhauli, Pusa-9531 and OBGG-52 but in 50% organic + 50% inorganic treatment in case of Nayagarh Local. The uptake of N, P and K was also observed to be the highest in Lime + 50% organic + 50% inorganic treatment in all the varieties.

Confirmation of Glyphosate-Resistant Horseweed (Conyza canadensis) in Montana Cereal Production and Response to POST Herbicides

2017 ◽  
Vol 31 (6) ◽  
pp. 799-810 ◽  
Author(s):  
Vipan Kumar ◽  
Prashant Jha ◽  
Amit J. Jhala
Keyword(s):  
Great Plains ◽  
Dose Response ◽  
Best Management Practices ◽  
Management Practices ◽  
Dry Weight ◽  
Shoot Dry Weight ◽  
Greenhouse Study ◽  
Whole Plant ◽  
Cereal Production ◽  
Sites Of Action

In recent years, horseweed has become an increasing problem in Montana. To confirm and characterize the level of glyphosate resistance, seeds were collected from putative glyphosate-resistant (GR) horseweed (GR-MT) plants in a wheat–fallow field in McCone County, MT. Known GR (GR-NE) and glyphosate-susceptible (GS-NE) horseweed accessions from Lincoln, NE, were included for comparison in dose–response and shikimate accumulation studies. Whole-plant glyphosate dose–response experiments conducted at the early- (5- to 8-cm diameter) and late- (12- to 15-cm diameter) rosette stages of horseweed indicated that GR-MT accessions had a 2.5- to 4.0-fold level of resistance to glyphosate relative to the GS-NE accession, on the basis of shoot dry weight (GR50values). The level of resistance was 3.1- to 7.9-fold on the basis of visually assessed injury estimates (I50values). At the whole-plant level, about 2.1- to 4.5-fold higher shikimate accumulation was observed in the GS-NE accession compared with the GR-MT and GR-NE accessions over a 10-d period after glyphosate was applied at 1,260 g ae ha−1. In a separate greenhouse study, all three horseweed accessions were also screened with alternate POST herbicides registered for use in wheat–fallow rotations. The majority of the tested herbicides provided ≥90% injury at the field-use rates for all three horseweed accessions 3 wk after treatment. This is the first published report on the occurrence of GR horseweed in Montana cereal production. Increased awareness and adoption of best management practices, including the use of diversified (based on multiple sites of action) herbicide programs highlighted in this study, would aid in mitigating the further spread of GR horseweed in the cereal production fields of the U.S. Great Plains.

scholarly journals Petunia Growth and Maintenance in the Landscape as Influenced by Alternative Irrigation Strategies

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 771B-771
Author(s):  
Sloane M. Scheiber* ◽  
Richard C. Beeson
Keyword(s):  
Best Management Practices ◽  
Management Practices ◽  
Irrigation System ◽  
Leaf Gas Exchange ◽  
Human Perception ◽  
Field Capacity ◽  
Dry Mass ◽  
Growth Responses ◽  
Controlled Irrigation ◽  
Alternative Irrigation

Petunia `Midnight' were grown in drainage lysimeters in an open-sided clear polyethylene covered shelter to evaluate growth responses in response to alternative irrigation strategies. Three irrigation methods were evaluated: tensiometer-controlled automatic irrigation system, regularly scheduled irrigation utilizing an automated controller, and human perception of plant irrigation need. Drainage lysimeters (250 L) were backfilled with native sand field soil to simulate landscape conditions and managed with Best Management Practices. Following establishment, lysimeters irrigated by an automated controller were irrigated 1.3 cm daily. Tensiometer-controlled lysimeters were irrigated when plant available water (2.5 kPa to 1.5 MPa) had declined to 70% or less, and were irrigated back to field capacity. Canopy growth indices and leaf gas exchange measurements were evaluated relative to irrigation strategies. Actual evapotranspiration was calculated for each replication. Daily irrigation resulted in significantly higher assimilation rates, transpiration rates, and final shoot dry weights than the other treatments tested. Assimilation rates and transpiration rates were significantly higher for tensiometer-controlled irrigation than the human judged treatment, but no differences were found in final shoot dry mass.

scholarly journals Effect of Soil Amendments on Growth of Pentas in a Simulated Landscape

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 790B-790
Author(s):  
Sudeep Vyapari* ◽  
S.M. Scheiber ◽  
Richard C. Beeson
Keyword(s):  
Best Management Practices ◽  
Soil Type ◽  
Management Practices ◽  
Soil Amendments ◽  
Dry Weight ◽  
Initial Growth ◽  
Growth Indices ◽  
Root Dry Weight ◽  
Shoot Dry Weight ◽  
Top Soil

During Fall 2003, a study was conducted to determine the effect of soil amendments on growth and response of Pentas lanceolata `New Look Red' in the landscape. Pentas were grown in 250L drainage lysimeters in an open-sided clear polyethylene covered shelter filled with local top soil (Apopka fine sand). The treatments used were non-amended top soil (control) and soil amended with either compost (5% by volume) or clay (5% by volume) in the top 15 cm. Best Management Practices were followed. Irrigation frequency and rate were regulated using a tensiometer-controlled automatic irrigation system. When plant available water in each soil type had declined to 70% or less, the plants were irrigated back to field capacity. Data were recorded on initial and final growth indices, shoot dry weight, and root dry weight. Final growth indices between control and soil amended with compost were not different; however, growth in the clay-based soil was significantly less than the compost-based soil type. The mean shoot dry weight (77.2 g) produced from plants in compost amended soil type was significantly higher than either control (57.45 g) or clay amended (54.92 g) soil types. No significant differences were found for either initial growth indices or root dry weight among the three treatments.

scholarly journals INFLUENCE OF COMPOST ON VEGETABLE CROP NUTRIENT MANAGEMENT

HortScience ◽  
2006 ◽  
Vol 41 (3) ◽  
pp. 509C-509
Author(s):  
D.C. Sanders ◽  
L.M. Reyes ◽  
D.W. Monks ◽  
K.M. Jennings ◽  
F.J. Louws ◽  
...  
Keyword(s):  
North Carolina ◽  
Pest Management ◽  
Nutrient Management ◽  
Crop Yields ◽  
Organic Amendments ◽  
Dry Weight ◽  
Vegetable Crop ◽  
Marketable Yield ◽  
Tomato Yield ◽  
Total Plant

Tomato, pepper, and cucumber were grown for consecutive years using compost from two North Carolina cities (Lexington and Edenton) and McGill Composts (CMC) sources and CMC amended with Tracoderma 382. Treatments included compost with an untreated control and Telone C-35 (Telone) with and without additional fertilizer. The objective was to evaluate compost influence on yield and pest management. Results showed significant differences between treatments and among years. Cucumber and pepper had higher total and marketable yields in 2005 than in 2004. Although tomato yield was lower in 2005 than in 2004 it was evident that CMC+Telone had a higher marketable and total plant dry weight in both years. Two year data showed that combinations of treatments with CMC and Telone (Telone+fertilizer, CMC+Telone, CMC+T382) produced higher yield for tomato and cucumber. Composts from Lexington and Edenton produced more number 2 grade peppers, but treatments did not differ in total and marketable yield. In general compost treatments with or without amendments showed better results in crop yields than the control. Weed counts by species were determined on all plots. Pepper had the greatest number of weeds relative to cucumber and tomato. Organic amendments seem to increase the action of the compost source in several crops. Combination of treatments may depend on the particular crop.

Sign in / Sign up

Export Citation Format

Share Document