Effect of organic manures and methods of fertilizer application on growth component, yield parameters and nutrient uptake of maize hybrid COH-M 8 {Zea mays L.}
1*Sivalingam. T, 2A. Balasubramanian, 3R. Gobi and 4S. Sathiyamurthi
1,2,3Department of Agronomy, Department of Agronomy, Faculty of Agriculture, Annamalai University, Annamalainagar-608002 (India) 4Department of Soil Science and Agricultural Chemistry, Faculty of Agriculture, Annamalai University, Annamalainagar-608002 (India)
ABSTRACT
A field study was carried out was conductedto study the effect oforganic manures and methods of fertilizer application on growth components, yield parameters and nutrient uptake of maize hybrid COH{M}8 {Zea mays L.} at farmer’sfield of Kovakkulam village, Karur District during January- April 2021. The present investigation employed a randomized block design which consists of nine treatments and three replications. The treatments contain application of NPK fertilizers along with different organic manures viz.,FYM @ 12.5 t ha-1, Vermicompost @5t ha-1 and Pressmud @ 5t ha-1, were tested usingdifferentmethods of fertilizer application like soil application and drip fertigation. One treatment was keptascontrol {without fertilizer application}. The results of the findings revealed that, the application of 100% RDF through fertigation + Vermicompost 5 t ha-1 {T7} recorded higher growth parameters during harvest viz., plant height {180.05 cm}, LAI {5.48}, DMP {14685 kg ha-1}, leaf area duration at 60 DAS to harvest {122 days}, CGR during60 DAS to harvest {15.61g m-2 day-1}, AGR during60 DAS to harvest {1.99cm plant-1 day-1}, yield attributes viz.,number of grains row cob-1 {13.12}, number of grains row-1 {23.82}, total number of grains cob-1 {312.52}, cob weight {83.59 g}, test weight {24.19 g },grain yield {6193 kg ha-1}, stover yield {9769 kg ha-1} and harvest index {38.80}. Absorption rate of nitrogen {171.81 kg ha-1}, phosphorus {20.56 kg ha-1} and potassium {151.26 kg ha-1} also higher in this treatment. This treatment was onpar with application of100% RDF through fertigation + Pressmud @5 tha-1 {T9} for all the growth and yield attributes. Lower growth parameters i.e,plant height {72.51 cm}, LAI {3.56}, DMP {6298 kg ha-1}, leaf area duration at 60 DAS to harvest {76 days}, CGR during 60DAS to harvest {7.55 g m-2 day-1} , AGRduring 60 DAS to harvest {0.57 cm plant-1 day-1}, yield attributes viz.,number of grains row cob-1 {7.78}, number of grains row-1 {14.71}, total number of grains cob-1 {114.44}, cob weight {30.72 g}, test weight {24.05 g}, grain yield {2270 kg ha-1}, stover yield {4250 kg ha-1}, harvest index {34.82} and nutrient uptake nitrogen {70.54 kg ha-1}, phosphorus {8.82 kg ha-1}, and potassium {64.87 kg ha-1} weredocumented, control {T1} treatment.