Relationships between the critical concentrations of nitrogen, phosphorus and potassium in 17 different vegetable crops and duration of growth

1980 ◽  
Vol 31 (12) ◽  
pp. 1343-1353 ◽  
Author(s):  
Duncan J. Greenwood ◽  
Anthony Barnes ◽  
Kit Liu ◽  
John Hunt ◽  
Trevor J. Cleaver ◽  
...  
Keyword(s):  
Vegetable Crops ◽  
Critical Concentrations ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

EFFECTS OF ADDED NITROGEN, PHOSPHORUS, AND POTASSIUM ON LEAF TISSUE BORON CONCENTRATION OF THREE VEGETABLE CROPS

1980 ◽  
Vol 60 (2) ◽  
pp. 571-576 ◽  
Author(s):  
J. A. CUTCLIFFE ◽  
UMESH C. GUPTA
Keyword(s):  
Brassica Oleracea ◽  
Prince Edward Island ◽  
Boron Concentration ◽  
Leaf Tissue ◽  
Vegetable Crops ◽  
Brussels Sprouts ◽  
Pisum Sativum L ◽  
Leaf Tissues ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

The effects of various rates of nitrogen, phosphorus, and potassium on the boron concentration of leaf tissue of cauliflower (Brassica oleracea var. botrytis L. ’Snowball Y’), Brussels sprouts (Brassica oleracea var. gemmifera Zenker ’Jade Cross’) and peas (Pisum sativum L. ’Dark Skin Perfection’) were investigated at several locations in Prince Edward Island. Except for N on cauliflower, B concentrations of leaf tissues of these crops were not greatly affected by the N, P, or K treatments. Applied N increased the B concentration of cauliflower leaf tissue at eight of the nine locations investigated.

scholarly journals Use of trellis graphics in the analysis of results from field experiments in agriculture

2007 ◽  
Vol 4 (1) ◽  
Author(s):  
Katarina Čobanović ◽  
Emilija Nikolić-Đorić ◽  
Beba Mutavdžić
Keyword(s):  
Field Experiment ◽  
Field Experiments ◽  
Multidimensional Data ◽  
Data Sets ◽  
Vegetable Crops ◽  
Analysis Of Results ◽  
Phosphorus And Potassium ◽  
Novi Sad ◽  
Multidimensional Data Sets ◽  
Nitrogen Phosphorus

Trellis graphics (Becker, Cleveland, and Shyu, 1996) is a very effective method for visualizing multidimensional data sets. The basic idea behind trellis graphics is to display any of a large variety of 1-D, 2-D or 3-D statistical plot types in trellis layout of panels, where each panel displays a subset of the data for different values of one or more additional discrete or continuous conditioning variables. The data that we use for the illustration of different applications of trellis graphics are the results of a field experiment conducted at the Institute for Field and Vegetable Crops in Novi Sad in the period 1994–1998 (Čobanović et al., 2001) with three fertilizers (nitrogen, phosphorus and potassium) in three repetitions with nine variants of wheat. In the experiment, four quantities of each fertilizer were applied (0, 50, 100, 150 kg/ha) at plots of the same size in 20 from 64 possible combinations, whereby the yield of wheat (t/ha) was the measured outcome.

Effects of Water-Nitrogen Interaction on Absorption, Translocation and Distribution of Nitrogen, Phosphorus, and Potassium in Rice

2010 ◽  
Vol 36 (4) ◽  
pp. 655-664 ◽  
Author(s):  
Yong-Jian SUN ◽  
Yuan-Yuan SUN ◽  
Xu-Yi LI ◽  
Rong-Ping ZHANG ◽  
Xiang GUO ◽  
...  
Keyword(s):  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

scholarly journals Effects of serpentinite fertilizer on the chemical properties and enzyme activity of young spruce soils

2016 ◽  
Vol 30 (4) ◽  
pp. 401-414 ◽  
Author(s):  
Ewa Błońska ◽  
Kazimierz Januszek ◽  
Stanisław Małek ◽  
Tomasz Wanic
Keyword(s):  
Enzyme Activity ◽  
Chemical Properties ◽  
Molar Ratio ◽  
Tree Roots ◽  
Forest Zone ◽  
Negative Effect ◽  
Phosphorus And Potassium ◽  
One Year ◽  
Nitrogen Phosphorus ◽  
Experimental Plots

AbstractThe experimental plots used in the study were located in the middle forest zone (elevation: 900-950 m a.s.l.) on two nappes of the flysch Carpathians in southern Poland. The aim of this study was to assess the effects of serpentinite in combination with nitrogen, phosphorus, and potassium fertilizers on selected chemical properties of the soil and activity of dehydrogenase and urease in the studied soils. All fertilizer treatments significantly enriched the tested soils in magnesium. The use of serpentinite as a fertilizer reduced the molar ratio of exchangeable calcium to magnesium, which facilitated the uptake of magnesium by tree roots due to competition between calcium and magnesium. After one year of fertilization on the Wisła experimental plot, the pH of the Ofh horizon increased, while the pH of the mineral horizons significantly decreased. Enrichment of serpentinite with nitrogen, phosphorus, and potassium fertilizers stimulated the dehydrogenase activity in the studied organic horizon. The lack of a negative effect of the serpentinite fertilizer on enzyme activity in the spruce stand soil showed that the concentrations of the heavy metals added to the soil were not high enough to be toxic and indicated the feasibility of using this fertilizer in forestry.

scholarly journals Effects of nitrogen, phosphorus and potassium rates on Microdochium patch

itsrj ◽  
2021 ◽  
Author(s):  
Brian McDonald ◽  
Alec Kowalewski ◽  
Clint Mattox ◽  
Emily Braithwaite ◽  
Charles Schmid
Keyword(s):  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

scholarly journals Effects of Biofertilizer Produced from Bradyrhizobium and Streptomyces griseoflavus on Plant Growth, Nodulation, Nitrogen Fixation, Nutrient Uptake, and Seed Yield of Mung Bean, Cowpea, and Soybean

Agronomy ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 77 ◽  
Author(s):  
Aung Zaw Htwe ◽  
Seinn Moh Moh ◽  
Khin Myat Soe ◽  
Kyi Moe ◽  
Takeo Yamakawa
Keyword(s):  
Nitrogen Fixation ◽  
Plant Growth ◽  
Seed Yield ◽  
Mung Bean ◽  
Growth And Yield ◽  
Vegetable Crops ◽  
N Application ◽  
Npk Uptake ◽  
Phosphorus And Potassium ◽  
Leguminous Crops

The use of biofertilizers is important for sustainable agriculture, and the use of nodule bacteria and endophytic actinomycetes is an attractive way to enhance plant growth and yield. This study tested the effects of a biofertilizer produced from Bradyrhizobium strains and Streptomyces griseoflavus on leguminous, cereal, and vegetable crops. Nitrogen fixation was measured using the acetylene reduction assay. Under N-limited or N-supplemented conditions, the biofertilizer significantly promoted the shoot and root growth of mung bean, cowpea, and soybean compared with the control. Therefore, the biofertilizer used in this study was effective in mung bean, cowpea, and soybean regardless of N application. In this study, significant increments in plant growth, nodulation, nitrogen fixation, nitrogen, phosphorus, and potassium (NPK) uptake, and seed yield were found in mung beans and soybeans. Therefore, Bradyrhizobium japonicum SAY3-7 plus Bradyrhizobium elkanii BLY3-8 and Streptomyces griseoflavus are effective bacteria that can be used together as biofertilizer for the production of economically important leguminous crops, especially soybean and mung bean. The biofertilizer produced from Bradyrhizobium and S. griseoflavus P4 will be useful for both soybean and mung bean production.

scholarly journals Phytotoxic effects of invasive Ageratina adenophora on two native subtropical shrubs in Nepal

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tej Bahadur Darji ◽  
Barsha Adhikari ◽  
Seeta Pathak ◽  
Shristi Neupane ◽  
Lal B. Thapa ◽  
...  
Keyword(s):  
Low Ph ◽  
Potential Mechanism ◽  
Phytotoxic Effects ◽  
Seedling Length ◽  
Ageratina Adenophora ◽  
Ir Analysis ◽  
Allelopathic Interference ◽  
Phosphorus And Potassium ◽  
Native Shrubs ◽  
Nitrogen Phosphorus

AbstractThe response of native plants to allelopathic interference of invasive species may differ from species to species. In this study, the phytotoxic effects of Ageratina adenophora were tested on two native shrubs (Osbeckia stellata and Elsholtzia blanda) of Nepal. Both the shrubs were grown in pots under treatments of A. adenophora fresh leaves and root leachates, and litter. Then, the seedling length and biomass were compared among the treatments. The results show that A. adenophora litter has stimulatory effects but the leachates from fresh leaves and root are phytotoxic to the growth and development of native shrubs. Infrared Spectroscopy (IR) analysis confirmed the presence of O–H (Hydroxyl), N–H (Amines), C≡C (Alkynes), and C–H stretching (Aromatic) or C–O–C stretching (Ethers) in the leachates representing harmful allelochemicals. The invaded soil by A. adenophora had low pH and a high amount of organic matter, total nitrogen, phosphorus, and potassium than the uninvaded soil. The results indicate that the native O. stellata and E. blanda are harmed by A. adenophora in nature by leaching of allelochemicals and probably by reducing the soil pH. Overall, this study has provided valuable insights regarding the effects of A. adenophora invasion on native shrubs and revealing the potential mechanism of its invasiveness.

Nitrogen, phosphorus and potassium utilization and their cycling in a beef-forage production system

2009 ◽  
Vol 80 (4) ◽  
pp. 475-485 ◽  
Author(s):  
Yusuke TABATA ◽  
Daisuke TOGO ◽  
Masayuki KITAGAWA ◽  
Kazato OISHI ◽  
Hajime KUMAGAI ◽  
...  
Keyword(s):  
Production System ◽  
Forage Production ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus
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