RELATION OF NUTRIENT CONTENT OF BROCCOLI AND BRUSSELS SPROUTS LEAVES TO MATURITY AND FERTILIZATION WITH N, P, K, AND MANURE

1978 ◽  
Vol 58 (2) ◽  
pp. 385-394 ◽  
Author(s):  
D. C. MUNRO ◽  
J. A. CUTCLIFFE ◽  
D. C. MACKAY

Leaf tissue of broccoli (Brassica oleracea L. ssp. italica Plenck. cv. Waltham 29) and Brussels sprouts (B. oleracea ssp. gemmifera cv. Jade Cross) was collected at three times during the growing season from plants fertilized with four levels of N, P, and K in factorial combination with, and without, farmyard manure. The leaf tissue was analyzed for total N, P, and K concentration. Leaf-tissue N, P, and K increased with increasing levels of applied N, P, and K, respectively. Significant N × P interactions occurred in which applied N increased tissue-P levels and applied P increased tissue-N levels. Growth responses to applied N and P tended to reduce tissue-K levels. Manure had almost no effect on tissue N and only small effects on tissue P and K. Concentrations of all three nutrients declined during the growing season. Critical N, P, and K levels for plant growth were within previously published ranges of 5.2–6.0% N, 0.35–0.60% P, and 1.7–2.2% K.

1974 ◽  
Vol 54 (1) ◽  
pp. 135-139
Author(s):  
D. C. MUNRO ◽  
J. A. CUTCLIFFE

Rutabagas (Brassica napobrassica Mill., cult York) were grown at three locations per year for 3 yr in factorial experiments of four levels of N, P, and K. Uppermost mature leaves were sampled at the beginning of root enlargement, at harvest time, and once between these dates. The leaf tissue was dried, ground, and analyzed for total N, P, and K. Percent N in leaf tissue was substantially increased by applied N, increased by applied P at some locations, and decreased by applied K. Percent P was increased by applied P and somewhat by applied N but decreased by applied K. Applied K increased the K content of leaf tissues but applied P and N caused substantial decreases in tissue K. Tissue N, P, and K decreased as the crop matured. To prevent nutrient deficiencies, rutabaga leaf-tissue at the beginning of root enlargement must contain at least 4.1% N, 0.46% P, and 2.0% K. Optimum nutrient levels for good yields are in the ranges 5.4–5.9% N, 0.58–0.70% P, and 3.0–3.8% K at this stage of growth.


2021 ◽  
Vol 50 (4) ◽  
pp. 1109-1117
Author(s):  
Hanuman Prasad Parewa ◽  
J Yadav ◽  
VS Meena ◽  
A Rakshit

Effects of different levels of chemical fertilizer, farmyard manure (FYM) and bio-inoculants on nutrient content, uptake and quality parameter of wheat were studied. Results indicated that increasing levels of chemical fertilizer, FYM and bio-inoculants significantly enhanced nutrient content and uptake by wheat, while quality parameters of wheat showed significant results with bio-inoculants application. Maximum N, P and K content and their uptake in grain (80.3, 11.07 and 25.29%, respectively) and straw (32.18, 7.14 and 95.92%, respectively) were noticed with 100% NPK over control. Application of FYM @ 10 t/ha significantly increased nutrient content (NPK) in grain and straw and their uptake over the control. The total N, P and K uptake by wheat were found to be maximum 80.97, 12.68 and 86.10 kg/ha, respectively with the application of FYM over control. Combined use of fertilizer levels and FYM, and combined use of fertilizer levels and bio-inoculants significantly increased the nutrient uptake by wheat. Bangladesh J. Bot. 50(4): 1109-1117, 2021 (December)


1969 ◽  
Vol 68 (1) ◽  
pp. 5-17
Author(s):  
Agripino Pérez-López ◽  
Rubén D. Reyes

Four levels of N (0, 57, 170 and 340 kg/ha) and 4 levels of B (0, 2.3, 4.5 and 6.8 kg/ha) were applied to the P.R. 7-65 papaya variety, growing on an Oxisol. Treatments were initiated when the transplanted seedlings were 3 months old, and were repeated every 6 weeks. Increments of N and B levels increased the petiole and fruit contents of these elements. Except at the highest N application, the leaf content of N decreased as the B supplied was increased; the fruit content of all elements, except P, decreased as the fruit matured; the Ca content of leaves and fruits increased directly with the N and B levels supplied to the soil; Mg increased and Mn decreased significantly in recently matured fruits as the N and B supplies to the soil were increased; the N and B levels associated with the highest yield (24 kg/plant) were 1.48% and 64 p/m, respectively; the petioles contained less N, P, Mg and B, and higher Ca and Mn, and about the same K as the fruits; the B, Ca, Mg and Mn contents decreased as the fruits ripened.


1973 ◽  
Vol 53 (3) ◽  
pp. 275-279 ◽  
Author(s):  
UMESH C. GUPTA ◽  
J. A. CUTCLIFFE

Broccoli (Brassica oleracea L. ssp. italica Plenck., cult Waltham 29), Brussels sprouts (Brassica oleracea L. ssp. gemmifera, cult Jade Cross), and cauliflower (Brassica oleracea L. ssp. botrytis, cult Snowball Y) were grown at four locations on Prince Edward Island with five levels of applied B at each location. The levels of applied B were: 0, 0.56, 1.12, 2.24, and 4.48 kg B/ha. No B deficiency symptoms, with the exception of hollow stem in cauliflower and broccoli, were noted. The incidence of hollow stem in these crops was not affected by applied B. The B concentration of tissues of all three crops was generally lower late in the growing season than earlier. Boron levels in the first tissue samplings were 13–70, 13–101, and 8–97 ppm in broccoli, Brussels sprouts, and cauliflower, respectively, and were found to be in the sufficiency range. A hot-water-soluble B content of 0.34–0.49 ppm in soil was sufficient for optimum growth of the crops. No B toxicity was observed even when the rate of applied B was 4.48 kg/ha.


1987 ◽  
Vol 67 (1) ◽  
pp. 205-207 ◽  
Author(s):  
UMESH C. GUPTA ◽  
J. A. CUTCLIFFE ◽  
RENALD CORMIER

Boron application rates as high as 8 and 16 kg ha−1 were not toxic to Brussels sprouts (Brassica oleracea L. ssp. gemmifera). These rates resulted in leaf tissue B levels of 123 and 161 μg g−1 and of 7.6 and 9.1 μg HWS B g−1 soil, respectively. Rates of 8–16 kg B ha−1 would, however, be seriously toxic to many crops. It is therefore strongly recommended that rates of B applied to Brussels sprouts should not exceed 2 kg ha−1. Such B applications should eliminate B deficiency in most crops and would not pose a threat of B toxicity to crops grown in the following year. Key words: Eastern Canada, Brussels sprouts yields, field studies, boron


1997 ◽  
Vol 73 (6) ◽  
pp. 711-714
Author(s):  
Luc C. Duchesne ◽  
Renée Tellier

The nutrient (N, P, K, Mg, and Ca) content of the aboveground living non-crop vegetation of a jack pine (Pinus banksiana Lamb.) clear-cut in eastern Ontario was investigated for two years after site preparation, which consisted of prescribed burning under different fire intensities and disk trencher scarification. Total plant nutrient content generally followed biomass accumulation with higher levels of plant N, P, Ca, and K in clear-cuts and scarified sites than in burned-over sites. In the first growing season, concentrations of N, P, and K were higher in the vegetation of burned-over plots than in scarified and clear-cut plots. Mg concentrations were greater in burned-over and scarified plots than in the clear-cut plots. Ca concentrations did not differ among the treatments. Concentration of P and K and the total amount of N, P and K in aboveground non-crop vegetation were correlated well with fire intensity at the end of the first growing season whereas only K concentration and quantities were correlated to fire intensity within two years after treatment. Key words: prescribed burning; disk trenching scarification; fire; Pinus banksiana; nutrients


1993 ◽  
Vol 118 (4) ◽  
pp. 464-469 ◽  
Author(s):  
C.H. Peacock ◽  
A.E. Dudeck ◽  
J.C. Wildmon

This investigation documented growth and nutritional responses of St. Augustinegrass `Floralawn', `Floratam', `Floratine', and `Seville' in salinized (conductivity = 1.1 to 41.5 dS·m-1) solution cultures. Averaged over all cultivars' tissue, Cl concentrations increased linearly as salinity increased, while Na concentrations reached a threshold at 10 dS·m-1 during 3 months of growth. Tissue K concentration decreased nonlinearly with increased salinity to 10 dS·m-1, with `Floratine' being the least affected. All cultivars apparently substituted Na for K until an optimum level was reached. Leaf tissue concentration of P decreased linearly, while Ca and Mg decreased nonlinearly with increased salinity. The salinity level that caused a 50% reduction in Ca concentration was 24% lower for `Floratine' than for other cultivars. Tissue color differences were more strongly correlated with Ca and Mg levels in `Floratine' than `Seville'. Differences in cultivar response were noted for K, P, Ca, and Mg, with `Seville' being the most salt-tolerant among those evaluated, based on overall nutritional and growth responses.


1986 ◽  
Vol 107 (1) ◽  
pp. 15-19 ◽  
Author(s):  
R. C. Sharma

SUMMARYA field experiment was conducted on acid soil of Kufri (Shimla) from 1980 to 1982 to study the effect of 30 t farmyard manure/ha (FYM) and 88 kg P + 160 kg K/ha (PK) on the response of potatoes to N fertilizer and on soil properties. There was a highly significant response of potato to N and the response was greater in the presence of PK than in the presence of FYM. The dose of N for maximum tuber yield with PK (39·9 t/ha) was 194 kg/ha, whereas for maximum yield with FYM (33·2 t/ha) it was 128 kg/ha. FYM met the P and K needs of potato when 100 kg N/ha was applied but not when 180 kg N/ha was applied. N fertilizer increased N concentration but decreased P and K concentration in leaves and tubers. The concentration of P and K was higher but that of N was lower with PK than with FYM. N fertilizer enhanced the uptake of P and K but its effect was not significant with FYM.After 3 years of treatment FYM improved organic carbon, total N and NO3 status of the soil. N as calcium ammonium nitrate increased organic carbon in the presence of PK but decreased it in the presence of FYM. N fertilizer had little effect on total N, NO3 and available P content. N application depleted available K and the depletion was proportionate to the rate of N applied. The application of FYM and PK increased available P and K content of the soil and the increase was more with PK than with FYM.


Forests ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 943
Author(s):  
Katri Nissinen ◽  
Virpi Virjamo ◽  
Antti Kilpeläinen ◽  
Veli-Pekka Ikonen ◽  
Laura Pikkarainen ◽  
...  

We studied the growth responses of boreal Scots pine (Pinus sylvestris L.), Norway spruce (Picea abies L. Karst.) and silver birch (Betula pendula Roth) seedlings to simulated climate warming of an average of 1.3 °C over the growing season in a controlled field experiment in central Finland. We had six replicate plots for elevated and ambient temperature for each tree species. The warming treatment lasted for the conifers for three growing seasons and for the birch two growing seasons. We measured the height and diameter growth of all the seedlings weekly during the growing season. The shoot and root biomass and their ratios were measured annually in one-third of seedlings harvested from each plot in autumn. After two growing seasons, the height, diameter and shoot biomass were 45%, 19% and 41% larger in silver birch seedlings under the warming treatment, but the root biomass was clearly less affected. After three growing seasons, the height, diameter, shoot and root biomass were under a warming treatment 39, 47, 189 and 113% greater in Scots pine, but the root:shoot ratio 29% lower, respectively. The corresponding responses of Norway spruce to warming were clearly smaller (e.g., shoot biomass 46% higher under a warming treatment). As a comparison, the relative response of height growth in silver birch was after two growing seasons equal to that measured in Scots pine after three growing seasons. Based on our findings, especially silver birch seedlings, but also Scots pine seedlings benefitted from warming, which should be taken into account in forest regeneration in the future.


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