An Asian Journal of Soil Science

K. B. Polara ¹, R. V. Sardhara ¹, K. B. Parmar ², N. B. Babariya ¹, K. G. Patel ³

Affiliations
1 Department of Agricultural Chemistry and Soil Science, Junagadh Agricultural University, Junagadh (Gujarat), IN
2 Department of Agricultural Chemistry and Soil Science, Junagadh Agricultural University, Junagadh (Gujarat), IN
3 Department of Agricultural Chemistry and Soil Science, N.M. College of Agriculture, Navsari Agricultural University, Navsari (Gujarat), IN

Abstract

A pot experiment was conducted under net house condition to study the effect of four levels of potassium (K₀, K₆₀, K₉₀ and K₁₂₀ mg Kkg^-1) on grain yield, dry weight of ischolar_main, ischolar_main volume, total ischolar_main length, nutrients content and inflow rate of nutrients in five wheat cultivars (Lok 1, GW 496, GW 273, GW 1139 and HI 8439) at different periods of wheat crop in factorial CRD with five replications. The grain yield of wheat was significantly increased due to application of potassium up to K90 treatment and further it was decreased with increased in level of K. Dry weight of ischolar_main and ischolar_main volume were significantly increased with increase in potassium levels up to 90 mg K kg^-1 at 100 DAS, but at 50 DAS, the ischolar_main volume was recorded maximum under K₁₂₀ treatment. Total ischolar_main length was significantly increased with increase in K level and found maximum with K₁₂₀ at all period of crop growth. The content of N, P, K, Ca, S, Fe, Mn and Zn in straw, ischolar_main and grain were decreased with advancement of crop growth and were increased significantly with K levels at all the periods of crop growth. However, the content of Ca in straw, ischolar_main and grain was significantly decreased with increasing potassium levels. Application of potassium significantly affected the inflow rate of N, P, K, Ca and S at 75 to 100 DAS and found maximum with K90 treatment. Similarly, inflow rate of P and Ca at 25 to 50 and 50 to 75 DAS were also significantly influenced due to the application of potassium. Inflow rate of Fe, Mn and Zn were affected significantly due to the application of potassiumon all the period of crop growth, except Mn at 50 to 75 DAS. The different varieties produced their significant effect on yield and inflow rate of nutrients at different period of crop growth.

Keywords

Potassium Levels, Grain Yield, Inflow Rate of Nutrients, Wheat Cultivars.

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K. B. Polara ¹, R. V. Sardhara ¹, K. B. Parmar ¹, H. L. Sakarvadia ¹, N. B. Babariya ¹

Affiliations
1 Department of Agricultural Chemistry and Soil Science, Junagadh Agricultural University, Junagadh (Gujarat), IN

Abstract

A pot experiment was conducted to study the dry matter and nutrients accumulation pattern in wheat (GW-496) on clayey soil (vertic ustochrept) of Sagadividi Research Farm, College of Agriculture,Junagadh Agricultural University, Junagadh. The maximum dry matter in plant (60.0 %) was accumulated during grain filling stage. Wheat straw showed higher accumulation of dry matter and nutrients, followed by grain and ischolar_mains. The removal of nutrients was recorded in the ranges of 5.2 to 13.6, 32.5 to 59.4 and 27.7 to 62.1 per cent to the its total requirement of different nutrients during vegetative, reproductive and grain filling stages, respectively. The peak absorption of N,K,P and Zn during grain filling stage, while that of Ca,Fe and Cu during reproductive stage and P,S and Mn almost equally during reproductive and grain filling stage.

Keywords

Accumulation and Partitioning, Dry Matter, Nutrients, Wheat Crop.

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