The interaction of nitrogen and potassium nutrition on dry matter and nitrogen yields of the graminae: Perennial ryegrass (<i>Lolium perenne</i>)

Talibudeen, O.; Page, M. B.; Mitchell, J.

doi:10.1002/jsfa.2740271104

Cited by 3 publications

(2 citation statements)

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“…There was an overall decline in soil K Index after growing grass for 2 yr from K Index 3 to 2+. The greater uptake of K where N is applied (Talibudeen et al, 1976) explains the lower soil K levels at the highest N rate used (Fig. 9) as well as improved fertilizer-N response in OMF and urea treatments compared with biosolids.…”

Section: Fertilizer Application Effects On Soilmentioning

confidence: 99%

Field‐Scale Evaluation of Biosolids‐Derived Organomineral Fertilizers Applied to Winter Wheat in England

et al. 2017

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Field-scale experiments in four crop seasons established the agronomic performance of biosolids-derived organomineral fertilizers (OMF) for winter wheat (Triticum aestivum L.) production in England. Two OMF formulations (OMF 10 10:4:4 and OMF 15 15:4:4) were compared with urea and biosolids granules (≈5:6:0.2) to determine crop responses and fertilizer eff ects on soil chemical properties. Fertilizers were applied at N rates between 0 and 250 kg ha -1 at regular increments of 50 kg ha -1 N. Average grain yields with OMF 10 and OMF 15 were higher than with biosolids granules, but lower than with urea (P < 0.05). Th e optimum N application rates, and corresponding grain yields, were 245 and 7900 kg ha -1 for biosolids, 257 and 9100 kg ha -1 for OMF 10 , 249 and 9500 kg ha -1 for OMF 15 , and 225 and 10350 kg ha -1 for urea, respectively. Diff erences in grain yield between fertilizer treatments were explained by diff erences in yield components, particularly number of grains and thousand-grain-weight. Grain-N recoveries were 31% for biosolids, ≈40% for OMF, and 52% for urea. Organomineral fertilizers-induced changes in soil extractable P and soil P Index were not signifi cant. Th us, application of OMF replenished P offt ake by the crop and therefore supported the choice of the proposed OMF formulations. By contrast, extractable P increased in biosolids and decreased in urea-treated soils, respectively. Heavy metals in soil were unaff ected by fertilizer treatment and lower than permissible limit values. Th e use of OMF for winter wheat production appears to be a sustainable approach to recycling biosolids to land.

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Section: Fertilizer Application Effects On Soilmentioning

confidence: 99%

Field‐Scale Evaluation of Biosolids‐Derived Organomineral Fertilizers Applied to Winter Wheat in England

et al. 2017

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“…Macleods obtained maximum yields at N/K ratios between 4 and 5 at high K levels but at a ratio of ca 14 at the lowest K level (cf. Macleod and Macleod,G for bromegrass and Talibudeen et al 7 for perennial ryegrass).…”

Section: Introductionmentioning

confidence: 94%

The interaction of nitrogen and potassium nutrition on dry matter and nitrogen yields of the graminae: Spring wheat

1976

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Spring wheat was grown in three experiments in controlled environments. Various levels of N and K in factorial combination were given at sowing and at later stages of development. An ancillary experiment, also described here, showed that the main contribution to dry matter yield and N uptake after stem extension was from the ears, much of the latter being at the expense of the leaves and stems. Dry matter and grain yields at maturity reached a maximum at an (N/K)s atom ratio in the soil of between 2 and 2.5 (where N=total N given and K=total K given + exchangeable K in the soil). The relationships suggest that at (N/K)s values higher than the optimum, yields would decrease, as with perennial ryegrass (page 999). Comparing the relationships between grain yield g−‐1 N given and N given, and between grain yield and (N/K)s, shows the importance of balancing the K status of the growth medium (i.e. K given + soil exchangeable K) with N given. Split N and K combinations did not result in increased yields except at the highest levles and when given at or after anthesis (Feekes stage 10.5).

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Potassium Nutrition of Forage Grasses

Robinson

2015

Potassium in Agriculture

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The interaction of nitrogen and potassium nutrition on dry matter and nitrogen yields of the graminae: Perennial ryegrass (Lolium perenne)

Cited by 3 publications

References 6 publications

Field‐Scale Evaluation of Biosolids‐Derived Organomineral Fertilizers Applied to Winter Wheat in England

Field‐Scale Evaluation of Biosolids‐Derived Organomineral Fertilizers Applied to Winter Wheat in England

The interaction of nitrogen and potassium nutrition on dry matter and nitrogen yields of the graminae: Spring wheat

Potassium Nutrition of Forage Grasses

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