Responses of grasses to sulphur fertilisers

O'Connor, K. F.; Vartha, E. W.

doi:10.1080/00288233.1969.10427081

Cited by 18 publications

(7 citation statements)

References 16 publications

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“…A shortage in the S supply to the crops lowers the utilization of the available soil nitrogen, thereby increasing nitrate leaching (Lakkineni and Abrol 1994). O'Conner and Vastha (1969) observed that large doses of gypsum reduced the yield of hay when N status in soil was unsatisfactory. Likewise, large doses of N created S deficiency (Eppendorfer 1971).…”

Section: Resultsmentioning

confidence: 99%

Interactive Effect of Nitrogen and Sulphur on Growth and Yield of Rape‐seed‐Mustard (Brassica juncea L. Czern. and Coss. and Brassica campestris L.) Genotypes

Ahmad

Abraham

Gandotra

et al. 1998

J Agronomy Crop Science

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A simple randomized field experiment was conducted to assess the growth and yield of rape‐seed‐mustard in relation to sulphur and nitrogen interaction. Three levels of sulphur (0, 40 and 60 kg ha−1) in combination with three levels of nitrogen (60, 100 and 150 kg ha−1) were tested as treatments, T1, T2, T3, T4, and T5. Results indicated significant favourable effects of sulphur and nitrogen, when applied together, on yield components, seed and oil yield. Maximum response was observed with treatment T3 (having S and N of 40 and 100 kg ha1, respectively). Percentage oil content of seed was maximal at T4 (having S and N of 60 and 100 kg ha1) in both cultivars. The increase in N dose from 100 to 150 kg ha−1 without any change in applied S, i.e. 60 kg ha1 (T5), decreased the percentage oil content. The seed and oil yield, however, were similar to T3. Favourable responses of S and N interaction on leaf area index, rate of photosynthesis and biomass production were also observed.

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Section: Resultsmentioning

confidence: 99%

Interactive Effect of Nitrogen and Sulphur on Growth and Yield of Rape‐seed‐Mustard (Brassica juncea L. Czern. and Coss. and Brassica campestris L.) Genotypes

Ahmad

Abraham

Gandotra

et al. 1998

J Agronomy Crop Science

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“…Plant analysis shows some promise for determining S status (10). Plant constituents commonly used have been total S (2,13), sulfate S (6,12,13), and NJS ratio (10,15,16,17). More recently sulfate S as a percentage of total S has been proposed (3,14).…”

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confidence: 99%

Sulfur Diagnostic Criteria as Affected by Age and Defoliation of Subclover

Jones¹,

Ruckman

Williams

et al. 1980

Agronomy Journal

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Sulfur deficiencies are widespread in California annual grasslands and in other areas of the world where subclover (Trifolium subterraneum L.) is an important legume. Intensive grazing is often practiced where subclover is grown. Therefore, to determine the need for S fertilization it is important to know how defoliation and plant age influence the diagnostic tissue tests used to assay subclover S status. Subclover was grown on S−deficient soil (Josephine, fine−loamy, mixed mesic, Typic Haplozerults) with six levels of applied S and four clipping treatments in a greenhouse. Four criteria for assaying S status were used: total S, sulfate S, sulfate S/total S ratio, and N/S ratio in the three youngest fully expanded leaves required to give 90% of maximum yield (critical levels based on Mitscherlich functions). The critical levels of sulfate S/total S and N/S ratios were the most stable over plant age and clipping frequency. Both assays accounted for about three−quarters of the variation on the average. The critical levels of total S and sulfate S although associated with over 90% of the variation were not stable individually, decreasing from 0.20 to 0.08% S and from 220 to 140 pprn sulfate S at 60 and 133 days from planting, respectively. Clipping frequency caused considerable variation in the critical levels for total S and sulfate S assays, making them more difficult to interpret than the sulfate S/total S and N/S ratio assays. It was concluded that the sulfate S/total S ratio has some advantages over the other assays, such as stability through the growing season, being little affected by defoliation, and resulting from a single analytical regime.

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“…Rasmussen et al (II) suggested a critical N ;s ratio of greater than 15: I in mature wheat (Triticum aestivum L.) herbage. O'Connor and Vartha (10) found the fertilizer N X S interaction 'to be highly and positively significant with regard to herbage yield of orchardgrass.…”

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Herbage Yield and Chemical Composition of Switchgrass as Affected by N, S, and K Fertilization¹

Friedrich¹,

Smith²,

Schrader

1977

Agronomy Journal

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Little information is available regarding the nutrient requirements of switchgrass (Panicum virgatum L.). The objective of this greenhouse study was to examine the effect of N, S, and K fertilization on the herbage yield, N/S ratio, and herbage concentrations of N and S in leaf blade, stem (culms and leaf sheaths), and total herbage fractions of switchgrass grown to anthesis. Three rates of N (0, 224, and 448 kg/ha of N as NH4NO3 in split application), three rates of K (0, 448, and 896 kg/ha of K as KHCO3), and two rates of S (0 and 56 kg/ha of S as CaSO4) were applied in all possible combinations (18 treatments) to pots containing soil cores of switchgrass. Dry matter yield of all herbage fractions increased significantly with each increment of N. However, for total herbage, stems, and inflorescences, yield increase with the second increment of N was dependent upon the application of S. K fertilization decreased inflorescence yield significantly at the highest rate, but did not affect dry matter yield of any other herbage fraction. At the highest rate of N, fertilization with S increased N concentration in the leaves, decreased N concentration in the stems, decreased the proportion of the total N localized in the stems, and increased the total herbage uptake of N. When S was applied, switchgrass responded to increased N fertilization by increasing S uptake. In contrast, when S was not applied, fertilization with N caused a dilution of tissue S and also decreased the proportion of the total herbage S localized in the stems. Concentration and content of N and S decreased with the first increment of K fertilization, but there was no change with the second increment of K. Critical N/S ratios for switchgrass appear to be greater than 10:1 for herbage, greater than 12:1 for leaf blades, and greater than 8:1 for stems.

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Responses of grasses to sulphur fertilisers

Cited by 18 publications

References 16 publications

Interactive Effect of Nitrogen and Sulphur on Growth and Yield of Rape‐seed‐Mustard (Brassica juncea L. Czern. and Coss. and Brassica campestris L.) Genotypes

Interactive Effect of Nitrogen and Sulphur on Growth and Yield of Rape‐seed‐Mustard (Brassica juncea L. Czern. and Coss. and Brassica campestris L.) Genotypes

Sulfur Diagnostic Criteria as Affected by Age and Defoliation of Subclover

Herbage Yield and Chemical Composition of Switchgrass as Affected by N, S, and K Fertilization¹

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Responses of grasses to sulphur fertilisers

Cited by 18 publications

References 16 publications

Interactive Effect of Nitrogen and Sulphur on Growth and Yield of Rape‐seed‐Mustard (Brassica juncea L. Czern. and Coss. and Brassica campestris L.) Genotypes

Interactive Effect of Nitrogen and Sulphur on Growth and Yield of Rape‐seed‐Mustard (Brassica juncea L. Czern. and Coss. and Brassica campestris L.) Genotypes

Sulfur Diagnostic Criteria as Affected by Age and Defoliation of Subclover

Herbage Yield and Chemical Composition of Switchgrass as Affected by N, S, and K Fertilization1

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Herbage Yield and Chemical Composition of Switchgrass as Affected by N, S, and K Fertilization¹