| Volume |
Issue |
Year |
Page No |
Type |
PDF Download |
|
41
|
|
2009
|
201
-
203
|
Short communications
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Effect of fertilizer and manure on weed incidence, depletion of nutrients by weeds and yield of soybean
Ashok Kumar Lodha, Rishikash Thakur, Shahina Tabasshum and Smita Singh
DOI :
IJWS-2009-41-3&4 Supplymentary-21
Email :
sapnapuat@gmail.com
Address :
Dept. of Soil Science and Agriculture Chemistry, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur (Madhya Pradesh)
Keywords
Fertility levels, POE herbicide
Abstract
A field experiment was conducted during rainy season of 2008 to study the effect of fertilizer and manure on weed incidence and depletion of nutrients by weeds in soybean. The relative density (RD) of broad leaved weeds were found dominant (33.63%) among all other weeds. Commelina communis was 14.68%, Echinochloa colona 11.97%, Cyperus rotundus 10.14%, Cynodon dactylon 6.70% and other weeds 22.86%. Among the different fertility levels, 100% NPK (20:80:20) + 15 t FYM/ha gave significantly lowest weed biomass, highest WCE (61.51%), zero percent weed index, significantly highest grain yield (8.13 q/ha), highest NPKS nutrient contents in weeds and lowest depletion of NPKS nutrient by weeds