An Asian Journal of Soil Science

Shubhangi J. Dhage ¹, V. D. Patil ¹, A. L. Dhamak ¹

Affiliations
1 Department of Soil Science and Agricultural Chemistry, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani (M.S.), IN

Abstract

A field experiments were conducted for two consecutive years during 2009-10 and 2010-11to study the effect of phosphorus and sulphur levels on soybean (Glycine max L.) at Research Farm, Department of Soil Science and Agril. Chemistry, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani (M.S.) on Vertisol (Typic Hapluster) deficient in phosphorus and sulphur. The treatments consisted of four levels of sulphur (S₀, S₂₀, S₄₀ and S₆₀ kg ha^-1) and four levels of phosphorus (P₀, P₃₀, P₆₀ and P₉₀ kg P₂O₅ ha^-1) applied through elemental sulphur and DAP, respectively. Results revealed that due to increase in the phosphorus and sulphur levels, there was effective improvement in nodulation, fresh weight of nodules plant^-1 and growth parameters viz., plant height, leaf area, ischolar_main length, ischolar_main dry weight plant-1 and number of pods plant^-1 at various growth stages of soybean. The yield i.e. grain, straw and total biological yield of soybean increased significantly with increasing levels of both phosphorus and sulphur. Further, synergistic effect of phosphorus and sulphur interactions on straw and total biological yield was highest at 90 kg P₂O₅ + 60 kg S ha^-1 followed by 90 kg P₂O₅ + 40 kg S ha^-1, 90 kg P₂O₅ + 20 kg S ha^-1 and 60 kg P₂O₅ + 60 kg S ha^-1 in straw yield and 90 kg P₂O₅ ha^-1 with 60 or 40 kg S ha^-1 produced significantly higher yield over S application with 30 and 0 kg P₂O₅ ha^-1 in total biological yield.

Keywords

Phosphorus, Sulphur, Soybean, Yield, Nodulation.

Full Text

     

Shubhangi J. Dhage ¹, V. D. Patil ¹, A. L. Dhamak ¹

Affiliations
1 Department of Soil Science and Agricultural Chemistry, Marathwada Krishi Vidyapeeth, Parbhani (M.S.), IN

Abstract

A field experiments were conducted to study the effect of phosphorus and sulphur levels on yield, fractions of P and S and nitrate reductase activity of soil after harvest of soybean at Research Farm, Department of Soil Science and Agril. Chemistry, MKV, Parbhani (M.S.). The treatment consisted of four levels P (P₀, P₃₀, P₆₀ and P₉₀ kg P₂O₅ ha^-1) and four levels of S (S₀, S₂₀, S₄₀ and S₆₀ kg ha^-1) applied through DAP and elemental sulphur. Result indicated that grain and straw yield, Leghaemoglobin content from ischolar_main nodules at 30 DAS and nitrate reductage activity of soil after harvest of soybean increased with increase in rate of application of P and S. The applied S and P increased the P and S fractions over control.

Keywords

Nitrate Reductase Activity, Phosphorus, Sulphur, Soybean, Yield.

Full Text

     

Shubhangi J. Dhage ¹, K. G. Kachhave ¹

Affiliations
1 Department of Soil Science and Agricultural Chemistry, Marathwada Agricultural University, Parbhani (M.S.), IN

Abstract

A field experiment was conducted to study the effect of dual inoculation of rhizobium and PSB on yield, nutrient (N, P, K) content, quality parameter i.e. protein as well as oil content and availability of nutrients in soil at harvest of soybean. The highest grain yield was recorded due to inoculation of rhizobium+PSB with 100% RDF. The highest grain yield of 15.46 q ha^-1 recorded in 100% RDF+rhizobium+PSB was significantly superior over all the treatments. However, lowest of 7.52 q ha^-1 were obtained in control. The highest N (6.23%), P (2.68%) and K (2.29%) contents in seed was obtained in T₁S₃ treatment. Dual inoculation of rhizobium+PSB also improved the quality of soybean in presence as well as absence of chemical fertilizer. The residual fertility in soil was also more due to 100% RDF+rhizobium+PSB treatment.

Keywords

Soybean, Biofertilizers, Rhizobium and PSB Inoculation, Yield, Quality.

Full Text

     

Shubhangi J. Dhage ¹, K. G. Kachhave ¹, S. T. Shirale ¹

Affiliations
1 Department of Soil Science and Agricultural Chemistry, Marathwada Agricultural University, Parbhani (M.S.), IN

Abstract

A field experiment was conducted to study the effect of bio-fertilizers on nodulation, yield, nutrient uptake and biological properties of soil by soybean. The study revealed that 100% RDF with dual inoculation (Rhizobium+PSB) resulted in the highest grain (1363 kg ha^-1) and straw yields (1798 kg ha^-1). Bio-fertilizers increased nodule number, fresh as will as dry weight of nodule plant^-1 and also improved the soil fertility by increasing organic carbon content and effective bacterial population in soil. The yield and nutrient (N, P and K) uptake also increased due to dual inoculation in presence as well as absence of chemical fertilizers.

Keywords

Soybean, Rhizobium, PSB Inoculation , Bio-Fertilizes, Nodulation.

Full Text

     

Shubhangi J. Dhage ¹, Poonam A. Patil ¹

Affiliations
1 Department of Soil Science and Agricultural Chemistry, Marathwada Agricultural University, Parbhani (M.S.), IN

Abstract

A field experiment was conducted to study the effect of different levels (0.20, 40 and 60 kg S ha^-1) and sources of sulphur (Gypsum and Gromor Sulphur Pastilles) on yield, growth parameter, nutrient uptake and quality of sunflower in sulphur deficient soil. The study revealed that the highest grain yield of 1282.80 kg ha^-1 was obtained with the treatment including NPK+60 kg ha^-1 S Bentonite which was significantly different from all other treatments but was at par with (NPK+40 kg S Bentonite. The growth parameters i.e. diameter of Sunflower head and number of seeds per flower were recorded highest with the treatment NPK+60 kg ha^-1 Beutonite. The highest nutrient uptake of N,P,K and S as well as the quality parameter i.e. oil content and oil yield were obtained in with the treatment containing NPK+60 kg ha^-1 Beutonite and significantly superior over control. Hence, sulphur in form of Gypsum or Gromor Sulphur Pastilles (Bentonite) improves the oil content and oil yield of Sunflower.

Keywords

Sunflower, Gypsum, Gromor, Sulphur, Quality and Uptake of N, P, K, S.

Full Text