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

Abstract

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.

Interactive effect of sulfur and nitrogen on nitrate reductase and ATP-sulfurylase activities in relation to seed yield fromPsoralea corylifolia L.

“…Growth attributes, the primary components that determine the success of a particular crop, are positively correlated with seed yield (Salimath and Bahl, 1986;Ahmad et al, 1998). Our data revealed that the combined application of S and N in Treatment T5 resulted in significant enhancement of both soluble protein content (Fig.…”

“…In vivo nitrate reductase activity in leaves was monitored at various stages according to the procedure of Hageman and Hucklesby (1971), with slight modification (Ahmad et al, 1998). Fresh leaf tissue was cut into 2-mm slices and placed in an ice-cold incubation medium containing 3.0 mL of potassium phosphate buffer (0.15 M; pH 7.2) and 3.0 mL of 0.4 M KNO3 solution.…”

“…This type of balanced and combined applications has also been critical to the production of more dry matter and higher seed yields in other crops (Dev and Saggar, 1974;Lakkineni and Abrol, 1992;Zhao et al, 1993). A strong metabolic coupling between these nutrients also has been demonstrated (Ahmad et al, 1998;Abdin et al, 2003). Adequate supplies of sulfur and nitrogen lead to better utilization of carbohydrates in forming more protoplasm.…”

Interactive effects of N and S fertilizers on canola yield and seed quality on S-deficient Gray Luvisol soils in northeastern Saskatchewan

“…In that study, rapeseed seed yield response was dependent on the balanced availability of N and S, and maximum seed yield was produced with simultaneous high rates of S and N. Also, Aulakh et al (1980) observed maximum yield when both N and S were applied to B. campestris and B. juncea. Ahmad et al (1998) reported maximum seed yield at optimum N × S combinations, while any deviation from that either reduced or did not benefit seed yield.…”

Plant mineral accumulation, use and transport during the life cycle of plants: A review

“…Low rates of N fertilizer, applied later in the crop cycle of wheat, reduced the loss of N without affecting yield and grain quality (Matson et al 1998). In legumes, for example, the higher number of nodules per pod with optimum supply of S (Scherer and Lange 1996) or in the field in Indian mustard (Brassica juncea) with S plus P (Jaggi 1998) or S plus N fertilization (Ahmad et al 1998), resulted in better root growth for the mother plant and better seed quality. Also during legume cultivation, the soil is acidified due to proton release from the roots and plants accumulate organic anions which are decomposed in the soil, neutralizing the soil acids (Yan et al 1996).…”