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Abstract

Novel Research in Sciences

Effects of Leaf Clipping and Population Density on Green Fodder and Grain Yield in Hybrid Maize

  • Open or CloseRokon GM1, Hasan Khan MM2*, Bahadur MM3, Shanto MH1, Khairul Alam4, Jahid Hussain5, Khairul Bashar HM6, Shomoresh Roy7, Juwel Halder8 and Rahaman F9

    1International Maize and Wheat Improvement Center (CIMMYT), Bangladesh

    2Scientific Officer (Plant Breeding), Bangladesh Agricultural Research Institute, Bangladesh

    3Professor, Department of Crop Physiology and Ecology, Dinajpur

    4Scientific Officer (Soil Science), Bangladesh Agricultural Research Institute, Bangladesh

    5Agricultural Research and development officer, Bangladesh

    6Senior Scientific Officer (Agronomy), Bangladesh Agricultural Research Institute, Bangladesh

    7Scientific Officer, OFRD, Bangladesh Agricultural Research Institute, Bangladesh

    8ACT (Science), Ministry of Education, Bangladesh

    9Scientific Officer, Bangladesh Agricultural Research Institute, Bangladesh

    *Corresponding author:Md Mahmudul Hasan Khan, Scientific Officer (Plant Breeding), Bangladesh Agricultural Research Institute, Bangladesh

Submission: May 23, 2019;Published: July 15, 2019

Abstract

Smallholder farmers having fragmented lands need fodder and grains simultaneously for earning food security for their families. A study was conducted in Crop Physiology and Ecology Research Field And Laboratory at Hajee Mohammad Danesh Science and Technology University, Bangladesh during the period of March to July-2013 to investigate the effect of leaf clipping and population density on fodder and grain yield in maize. Three population densities (D1=75cm×25cm, D2=60cm×20cm and D3=50cm×20cm) and three clipping treatments (C1=no clipping, C2=removal of all leaf blades below the lowermost cob and C3=removal of all leaf blades above the uppermost cob) at the silking stage were included as experimental treatments. The experiment was laid out in a two factors Randomized Complete Block Design (RCBD) with three replications. Results revealed that D1 required the maximum days to attain most of the phenological stages of maize. Higher population density (D3) with C3 clipping treatment gave the highest plant height, whereas D1 with non-clipping treatment gave the lowest. Highest total dry matter (TDM) was found in D2 with C1 and the lowest was found in D1 with C1 treatment. Highest yield (8.88 t ha-1) and harvest index (36.2%) were found in D3 treatment whereas the lowest yield (5.92 t ha-1) in D1 population density but harvest index (32.6%) was lowest in D2. The highest yield (8.33 t ha-1) and harvest index (35.5%) were obtained from C1 treatment and the lowest yield (6.55 t ha-1) and harvest index (33.5%) were obtained from C3 treatment. The highest fodder yield (3.33 t ha-1) was obtained from D3 treatment and the lowest (2.11 t ha-1) in D1 treatment. In C2 treatment, the highest D3amount of fodder (4.67 t ha-1) was obtained. The interaction between population density and leaf clipping treatment showed a significant variation among the yield and yield attributes in maize. It is indicated that D3 and C1 combination showed the best performance in respect of grain yield (9.67 t ha-1) and harvest index (38.3 %) of maize. But for both grain and fodder yield, D3 with C2 showed the best performance.

Keywords: Defoliation; yield; Green fodder; Leaf clipping; Zea mays

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