Abstract
The study investigated on soil nutrients in agriculture practiced high, medium high, medium low and low land at Kalihati upazila of Tangail district during October 2017 to June 2018. Thirty soil samples were collected from different land types at the study area and analyzed at Soil Resource Development Institute (SRDI) to determine soil nutrient status. The soil parameters under investigation included pH, organic matter (OM), total nitrogen (N), available phosphorus (P), available zinc (Zn), available iron (Fe), available manganese (Mn), available boron (B), exchangeable potassium (K), exchangeable calcium (Ca) and exchangeable magnesium (Mg). Results indicated that many of the soil nutrient levels decreased such as pH (5.63 to 6.40), P (3.50 to 23.20 μg g-1), Zn (3.27 to 3.60 μg g-1), Mn (21.12 to 57.90 μg g-1), B (0.17 to 0.60 μg g-1), K (0.18 to 0.30 meq 100g-1) and Ca (5.75 to 9.10 meq 100g-1). On the contrary, the average content of OM (2.30 to 1.40%), Fe (248.22 to 161.10 μg g-1) and Mg (2.07 to 1.80 meq 100g-1) were increased. Total N content status did not change much (0.12%). Soil nutrients like those that available Zn, Fe, Mn and Mg contents were found above optimum level (very high) but OM and N status found below optimum level (low, very low and medium). Nutrient concentrations below optimum levels may limit crop yield. Updated knowledge about soil nutrient status needs to be provided for the farmers so that they can use necessary amount of fertilizers and avoid applying excess amount of fertilizers.
 Int. J. Agril. Res. Innov. Tech. 10(2): 84-90, December 2020
Highlights
The main challenge of agriculture is to provide enough food for the rapidly increasing population of the country (Shah et al, 2008)
Soil is the ultimate source of almost all essential nutrient elements for plant growth
Findings of this study concluded that most of the nutrients were above optimum levels and so there was no need for using additional supplements for these nutrients
Summary
The main challenge of agriculture is to provide enough food for the rapidly increasing population of the country (Shah et al, 2008). Often extra fertilizers and pesticides are used carelessly and inefficiently Limiting these problems need timely assessment of the soil nutrient at the field level (Bhuiya et al, 1974). Soil acts as the storehouse for plant nutrients. Soil is the ultimate source of almost all essential nutrient elements for plant growth. Soil plays a major role in determining the sustainable productivity of an agro-ecosystem. The sustainable productivity of soil mainly depends upon its ability to supply essential nutrients to the growing plants. Soil fertility is an important factor, which determines the growth of plant. Soil fertility is determined by the presence or absence of nutrients i.e. macro and International Journal of Agricultural Research Innovation & Technology An open access article under
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
