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Dash, Subhaprada
- Benefits and Constraints of Using Bioherbicide in Weed Management
Authors
1 Department of Agronomy, Palli Siksha Bhavana (Institute of Agriculture), Visva-Bharati, Sriniketan (W.B.), IN
2 Department of Soil Science and Agricultural Chemistry, Odisha University of Agriculture and Technology, Bhubneswar (Odisha), IN
Source
Rashtriya Krishi (English), Vol 11, No 2 (2016), Pagination: 23-24Abstract
Plant pathogens hold enormous potential as bioherbicide. In addition to the use of plant pathogens as bioherbicide, it is likely that pathogen derived genes, gene products, and genetic mechanisms will be exploited in the near future to provide novel weed-management systems. On the other hand, the present over-reliance on chemical herbicides is purely on economic considerations, at the exclusion of ecological and social benefits. Thus the serious limitation of environment could site use of bioherbicide.
- Liming for Enhancing Soil Quality in Acid Soils
Authors
1 Department of Soil Science and Agricultural Chemistry, Odisha University of Agriculture and Technology, Bhubaneswar (Odisha), IN
2 Department of Agronomy, Palli Siksha Bhavana (Institute of Agriculture), Visva-Bharati, Sriniketan (W.B.), IN
3 Department of Agronomy, Odisha University of Agriculture and Technology, Bhubaneswar (Odisha), IN
Source
Rashtriya Krishi (English), Vol 11, No 2 (2016), Pagination: 97-98Abstract
Now it is very difficult to supply food to meet the demand of growing population. Acid soil is a major constraint for producing food grain. Farmers can enhance the soil quality of acid soils by liming to adjust pH to a desired levels needed by the crop to be grown. Benefits of liming include increased nutrient availability, soil structure and rates of infiltration. Soil pH is essential for the proper management and optimum soil and crop productivity. In aqueous solutions, an acid is a substance that donates hydrogen ions (H+) to some other substance. Soil pH is a measure of the number of hydrogen ions in the soil solution. The low productivity of the agricultural sector is largely attributed to low and decreasing soil fertility due to many factors such as soil acidity, soil erosion, continuous cropping and inadequate sustainable soil fertility management (Crawford and US, 2008). For instance, the acidity affects the fertility of soils through nutrient deficiencies (P, Ca and Mg) and the presence of phytotoxic nutrients such as soluble Al and Mn. Application of lime increases both P uptake in high P fixing soil and plant ischolar_maining system by reducing Al and Mn toxicity and improving pH, Ca and Mg. The use of lime is a better option for soils sustainable management among the other options for restoring soil quality.