Abstract
Maize (Zea mays L.) is one of the most versatile cereal crops and widely cultivated in more than 150 countries of the world including tropical and temperate regions. Though maize can be grown in the wide range of climatic conditions, its productivity is largely depending on the prevailing weather conditions throughout the life cycle of the crop. Different management practices as well as prevailing weather parameters affect growth and development of crop differently. Therefore, it was contemplated to have an insight on the effect of photosynthetically active radiation (PAR) interception and leaf area index of maize grown under different nutrient management practices in Punjab
Highlights
The maximum photosynthetically active radiation (PAR) interception was observed at 60 DAP due to highest value of leaf area index (LAI) at this stage and gradually decreased in PAR interception due to senescence of leaf after this point of growth stage
The maximum PAR interception was observed at 60 DAP due to highest value of LAI at this stage and gradually decreased in PAR interception due to senescence of leaf after this point of growth stage
Application of 1/3 N FYM + 1/3 N vermi-compost + 1/3 N castor cake + bio-fertilizer containing N and P carriers recorded statistically higher PAR interception as compared to 100 % NPK, 1/3 N FYM + 1/3 N vermi-compost + 1/3 N castor cake + intercropping (Soybean) and 50% N as FYM + biofertilizer + rock phosphate + PSB treatment but was at par with 1/3 N FYM + 1/3 N vermi-compost + 1/3 N castor cake at all growth stages and this was due to higher plant height and leaf area index resulted more light interception by crop plants.Leaf area index is an important index which influences the photosynthetic efficiency of plant and has marked influence on plant growth and yield of crop
Summary
The maximum PAR interception was observed at 60 DAP due to highest value of LAI at this stage and gradually decreased in PAR interception due to senescence of leaf after this point of growth stage. Application of 50% N through FYM along with 50% N through inorganic fertilizers recorded higher photo synthetically active radiation interception as compared to other treatments but it is statistically at par with 1/3 N FYM + 1/3 N vermi-compost + 1/3 N castor cake + bio-fertilizer containing N and P carriers and 1/3 N FYM + 1/3 N vermi-compost + 1/3 N non edible oil cake at all growth stages of the crop.
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