Effect of nutrient seed coating on the emergence and early growth of perennial ryegrass

1985 ◽  
Vol 36 (2) ◽  
pp. 221 ◽  
Author(s):  
JM Scott ◽  
CJ Mitchell ◽  
GJ Blair
Keyword(s):  
Perennial Ryegrass ◽  
Statistical Tests ◽  
N Uptake ◽  
Nitrogen Deficiency ◽  
Early Growth ◽  
Nutrient Deficiencies ◽  
Type Curves ◽  
Partially Acidulated Rock Phosphate ◽  
Isobutylidene Diurea ◽  
Nitrogen Phosphorus

Perennial ryegrass (Lolium perenne L.) seeds were coated with either lime, reverted superphosphate plus nitrogen as isobutylidene diurea (RSN), or partially acidulated rock phosphate plus sulfur (ESPARP). In one experiment emergence rates and total emergence were calculated by fitting Mitscherlich-type curves to the data and then conducting statistical tests on the three parameters found for each curve. There was a significant interaction between soil moisture and coating treatment for all three parameters. In a glasshouse experiment, the same coated and uncoated seed treatments were sown either in soil supplied with nitrogen, phosphorus and sulfur or in soil with nutrient deficiencies of either N, P, or S or NPS, and the early growth of the plants and their P and N uptakes were studied. The two nutrient-coated treatments (RSN and ESPARP) produced more tillers and dry matter yields of roots and shoots than did lime-coated or uncoated seed when grown in soils deficient in P, S or NPS. Nitrogen deficiency reduced yields of all plants, even those derived from RSN seeds. N uptake in the RSN treatment was not significantly different from the ESPARP treatment, indicating that the N in isobutylidene diurea was not available to the plant.

scholarly journals Effects of Deficiency Nitrogen Phosphorus Potassium Calcium in Okra (Abelmoschus esculentus L. Moench) Through Hydroponics

2019 ◽  
Vol 8 (3) ◽  
pp. 4393-4396
Keyword(s):  
Nitrogen Deficiency ◽  
Calcium Deficiency ◽  
Nutrient Deficiencies ◽  
Calcium Treatment ◽  
Leaf Color ◽  
Green Leaves ◽  
Yellowish Green ◽  
Randomized Design ◽  
Brown Leaf ◽  
Nitrogen Phosphorus

Plants with nutrient deficiencies can not grow maximally and can even cause death. This study aims know to find out symptoms and the effect of deficiency elements of Nitrogen, Phosphorus, Potassium and Calcium in okra plants on growth. This study used a complete randomized design (RAL) consisting of 5 treatments and each treatment had 5 replications. The treatments consist of: Nutrition complete, without nitrogen (-N), without phosphorus (-P), without potassium (-K) and without Calcium (-Ca). The results of this study are the existence of significant differences in the treatment of nitrogen deficiency, phosphorus, potassium, and calcium. Treatment without nitrogen has a leaf color that tends to yellowish. Without phosphorus showing the color of yellowish green leaves, the tip of brown leaves like burning and dwarf leaves. Without potassium showing the color of yellowish leaves, leaves more wavy, the leaves dry and die. Without calcium showing the color of yellowish green leaves, withered leaves, brown leaf tip. Nitrogen, phosphorus, potassium and calcium deficiency affect plant height, leaf number, length and width of leaves, leaf color

scholarly journals Can pasture persistence be improved through the use of nonryegrass species?

2011 ◽  
Vol 15 ◽  
pp. 157-162
Author(s):  
G.D. Milne
Keyword(s):  
New Zealand ◽  
Water Temperature ◽  
Lolium Perenne ◽  
Perennial Ryegrass ◽  
Tall Fescue ◽  
Festuca Arundinacea ◽  
Dactylis Glomerata ◽  
Grass Species ◽  
Nutrient Deficiencies ◽  
Recent Discussion

Recent discussion about pasture persistence concentrates on pastures based on perennial ryegrass, the most commonly used grass species. This paper raises the question as to whether some of the causes of poor pasture persistence are due to perennial ryegrass being used in environments to which it is not suited. The adaptation to environmental stresses, particularly water, temperature and nutrient deficiencies, in different regions of New Zealand of tall fescue, cocksfoot, phalaris, and lucerne are discussed, and how this impacts on persistence advantages over perennial ryegrass. Keywords: persistence, pasture, Dactylis glomerata, Festuca arundinacea, Lolium perenne, Medicago sativa, Phalaris aquatica

Italian ryegrass swards reduce N leaching via greater N uptake and lower drainage over perennial ryegrass cultivars varying in cool season growth rates

2018 ◽  
Vol 62 (1) ◽  
pp. 69-82 ◽  
Author(s):  
Thomas M. R. Maxwell ◽  
Roger D. McLenaghen ◽  
Grant R. Edwards ◽  
Hong J. Di ◽  
Keith C. Cameron
Keyword(s):  
Perennial Ryegrass ◽  
Growth Rates ◽  
N Uptake ◽  
Italian Ryegrass ◽  
N Leaching ◽  
Cool Season

scholarly journals The Effect of Mineral Nutrient Deficiency on the Content of free Amino Acids in Setaria Sphacelata

1972 ◽  
Vol 25 (1) ◽  
pp. 77 ◽  
Author(s):  
RD Court ◽  
WT Williams ◽  
MP Hegarty
Keyword(s):  
Amino Acids ◽  
Free Amino Acids ◽  
Free Amino ◽  
Nitrogen Deficiency ◽  
Nutrient Deficiency ◽  
Leaf Nitrogen ◽  
Mineral Nutrient ◽  
Nutrient Deficiencies ◽  
Setaria Sphacelata ◽  
Almost All

The effects of several single mineral nutrient deficiencies on the free amino acid composition of S. sphacelata, grown in water culture, have been examined. Most deficiencies result in an accumulation of the free amino acids. Severe copper deficiency causes a large increase in the alanine content of the leaf. Nitrogen deficiency causes decreases in almost all amino acids.

Wheat genotypes with high early vigour accumulate more nitrogen and have higher photosynthetic nitrogen use efficiency during early growth

2014 ◽  
Vol 41 (2) ◽  
pp. 215 ◽  
Author(s):  
Jiayin Pang ◽  
Jairo A. Palta ◽  
Gregory J. Rebetzke ◽  
Stephen P. Milroy
Keyword(s):  
Aboveground Biomass ◽  
N Uptake ◽  
Triticum Aestivum L ◽  
Early Growth ◽  
Shoot Biomass ◽  
Genotypic Differences ◽  
Wheat Genotypes ◽  
Early Vigour ◽  
Use Efficiency ◽  
N Use

Genotypic differences in early growth and nitrogen (N) uptake among 24 wheat (Triticum aestivum L.) genotypes were assessed in a field trial. At late tillering, large genetic variation was observed for shoot biomass (23–56 g m–2 ground area) and N uptake (1.1–1.8 g m–2 ground area). A strong correlation between aboveground biomass and N uptake was observed. Variation around this relationship was also found, with some genotypes having similar N uptake but large differences in aboveground biomass. A controlled environment experiment was conducted to investigate the underlying mechanisms for this variation in aboveground biomass using three vigorous genotypes (38–19, 92–11 and CV97) and a non-vigorous commercial cultivar (Janz). Vigorous genotypes had lower specific leaf N in the youngest fully expanded leaf than Janz. However, there was no difference in chlorophyll content, maximum Rubisco activity or the rate of electron transport per unit area. This suggests that Janz invested more N in non-photosynthetic components than the vigorous lines, which could explain the higher photosynthetic N use efficiency of the vigorous genotypes. The results suggest that the utilisation of wheat genotypes with high early vigour could improve the efficiency of N use for biomass production in addition to improving N uptake during early growth.

The effect of co-composted cabbage and ground phosphate rock on the early growth and P uptake of oilseed rape and perennial ryegrass

2012 ◽  
Vol 175 (4) ◽  
pp. 595-603 ◽  
Author(s):  
Robin L. Walker ◽  
Anthony C. Edwards ◽  
Phillip Maskell ◽  
Christine A. Watson ◽  
Robert M. Rees ◽  
...  
Keyword(s):  
Oilseed Rape ◽  
Perennial Ryegrass ◽  
Phosphate Rock ◽  
P Uptake ◽  
Early Growth

The influence of shoot and root size on nitrogen uptake in wheat is affected by nitrate affinity in the roots during early growth

2015 ◽  
Vol 42 (12) ◽  
pp. 1179 ◽  
Author(s):  
Jiayin Pang ◽  
Stephen P. Milroy ◽  
Gregory J. Rebetzke ◽  
Jairo A. Palta
Keyword(s):  
Kinetic Parameters ◽  
Root System ◽  
Transport System ◽  
Field Trial ◽  
N Uptake ◽  
Early Growth ◽  
Transport Systems ◽  
Uptake Kinetic ◽  
Influx Rate ◽  
Wheat Genotypes

Shoot and root system size influences N uptake in wheat (Triticum aestivum L.). Previously, we showed that four wheat genotypes with different biomass had similar N uptake at tillering. In the present study, we determined whether the similarity in N uptake in these genotypes was associated with genotypic differences in the affinity of the root system for NO3– uptake. Kinetic parameters of NO3– uptake were measured in hydroponic seedlings of vigorous and nonvigorous early growth wheat genotypes by exposing them to solutions with differing concentrations of K15NO3 for 15 min. In the low concentration range, the high-affinity transport system of the nonvigorous cultivar Janz showed a higher maximum influx rate than the three vigorous lines and a higher affinity than two of the three vigorous lines. At high NO3– concentrations, where the low-affinity transport system was functional, the responsiveness of NO3– uptake to external concentrations was greater in Janz than in the vigorous lines. Both the high- and low-affinity transport systems were inducible. The genotypic variation in the kinetic parameters of NO3– uptake was large enough to offset differences in morphological traits and should be considered in efforts to improve N uptake. In a field trial, the growth and N uptake performance of the four wheat genotypes was investigated over the winter–spring growing season (June–November of 2010). The field trial showed that although early N uptake was disproportionately large relative to biomass accumulation, the differences in uptake at tillering can be changed by subsequent patterns of uptake.

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